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staging: crypto: skein: rename camelcase vars

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camelCase is not accepted in the Linux Kernel. To prepare skein
driver for mainline inclusion, we rename all vars to
non-camelCase equivalents.

Signed-off-by: Anton Saraev <antonysaraev@gmail.com>
Reviewed-by: Jake Edge <jake@lwn.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Anton Saraev 2014-05-19 12:09:55 +04:00 committed by Greg Kroah-Hartman
parent 68ace624a6
commit 95f1840a7e
13 changed files with 558 additions and 548 deletions
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1
drivers/staging/skein/TODO
View File

@ -1,6 +1,5 @@
skein/threefish TODO
- rename camelcase vars
- rename files
- move macros into appropriate header files
- add / pass test vectors

119
drivers/staging/skein/include/skein.h
View File

@ -33,8 +33,9 @@
#endif
/* below two prototype assume we are handed aligned data */
#define Skein_Put64_LSB_First(dst08, src64, bCnt) memcpy(dst08, src64, bCnt)
#define Skein_Get64_LSB_First(dst64, src08, wCnt) memcpy(dst64, src08, 8*(wCnt))
#define Skein_Put64_LSB_First(dst08, src64, b_cnt) memcpy(dst08, src64, b_cnt)
#define Skein_Get64_LSB_First(dst64, src08, w_cnt) \
memcpy(dst64, src08, 8*(w_cnt))
#define Skein_Swap64(w64) (w64)
enum {
@ -63,82 +64,82 @@ enum {
#define SKEIN1024_BLOCK_BYTES (8*SKEIN1024_STATE_WORDS)
struct skein_ctx_hdr {
size_t hashBitLen; /* size of hash result, in bits */
size_t bCnt; /* current byte count in buffer b[] */
u64 T[SKEIN_MODIFIER_WORDS]; /* tweak: T[0]=byte cnt, T[1]=flags */
size_t hash_bit_len; /* size of hash result, in bits */
size_t b_cnt; /* current byte count in buffer b[] */
u64 T[SKEIN_MODIFIER_WORDS]; /* tweak: T[0]=byte cnt, T[1]=flags */
};
struct skein_256_ctx { /* 256-bit Skein hash context structure */
struct skein_ctx_hdr h; /* common header context variables */
u64 X[SKEIN_256_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN_256_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
u64 X[SKEIN_256_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN_256_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
};
struct skein_512_ctx { /* 512-bit Skein hash context structure */
struct skein_ctx_hdr h; /* common header context variables */
u64 X[SKEIN_512_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN_512_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
u64 X[SKEIN_512_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN_512_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
};
struct skein1024_ctx { /* 1024-bit Skein hash context structure */
struct skein_ctx_hdr h; /* common header context variables */
u64 X[SKEIN1024_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN1024_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
u64 X[SKEIN1024_STATE_WORDS]; /* chaining variables */
u8 b[SKEIN1024_BLOCK_BYTES]; /* partial block buf (8-byte aligned) */
};
/* Skein APIs for (incremental) "straight hashing" */
int skein_256_init(struct skein_256_ctx *ctx, size_t hashBitLen);
int skein_512_init(struct skein_512_ctx *ctx, size_t hashBitLen);
int skein_1024_init(struct skein1024_ctx *ctx, size_t hashBitLen);
int skein_256_init(struct skein_256_ctx *ctx, size_t hash_bit_len);
int skein_512_init(struct skein_512_ctx *ctx, size_t hash_bit_len);
int skein_1024_init(struct skein1024_ctx *ctx, size_t hash_bit_len);
int skein_256_update(struct skein_256_ctx *ctx, const u8 *msg,
size_t msgByteCnt);
size_t msg_byte_cnt);
int skein_512_update(struct skein_512_ctx *ctx, const u8 *msg,
size_t msgByteCnt);
size_t msg_byte_cnt);
int skein_1024_update(struct skein1024_ctx *ctx, const u8 *msg,
size_t msgByteCnt);
size_t msg_byte_cnt);
int skein_256_final(struct skein_256_ctx *ctx, u8 *hashVal);
int skein_512_final(struct skein_512_ctx *ctx, u8 *hashVal);
int skein_1024_final(struct skein1024_ctx *ctx, u8 *hashVal);
int skein_256_final(struct skein_256_ctx *ctx, u8 *hash_val);
int skein_512_final(struct skein_512_ctx *ctx, u8 *hash_val);
int skein_1024_final(struct skein1024_ctx *ctx, u8 *hash_val);
/*
** Skein APIs for "extended" initialization: MAC keys, tree hashing.
** After an init_ext() call, just use update/final calls as with init().
**
** Notes: Same parameters as _init() calls, plus treeInfo/key/keyBytes.
** When keyBytes == 0 and treeInfo == SKEIN_SEQUENTIAL,
** Notes: Same parameters as _init() calls, plus tree_info/key/key_bytes.
** When key_bytes == 0 and tree_info == SKEIN_SEQUENTIAL,
** the results of init_ext() are identical to calling init().
** The function init() may be called once to "precompute" the IV for
** a given hashBitLen value, then by saving a copy of the context
** a given hash_bit_len value, then by saving a copy of the context
** the IV computation may be avoided in later calls.
** Similarly, the function init_ext() may be called once per MAC key
** to precompute the MAC IV, then a copy of the context saved and
** reused for each new MAC computation.
**/
int skein_256_init_ext(struct skein_256_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes);
int skein_512_init_ext(struct skein_512_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes);
int skein_1024_init_ext(struct skein1024_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes);
int skein_256_init_ext(struct skein_256_ctx *ctx, size_t hash_bit_len,
u64 tree_info, const u8 *key, size_t key_bytes);
int skein_512_init_ext(struct skein_512_ctx *ctx, size_t hash_bit_len,
u64 tree_info, const u8 *key, size_t key_bytes);
int skein_1024_init_ext(struct skein1024_ctx *ctx, size_t hash_bit_len,
u64 tree_info, const u8 *key, size_t key_bytes);
/*
** Skein APIs for MAC and tree hash:
** final_pad: pad, do final block, but no OUTPUT type
** output: do just the output stage
*/
int skein_256_final_pad(struct skein_256_ctx *ctx, u8 *hashVal);
int skein_512_final_pad(struct skein_512_ctx *ctx, u8 *hashVal);
int skein_1024_final_pad(struct skein1024_ctx *ctx, u8 *hashVal);
int skein_256_final_pad(struct skein_256_ctx *ctx, u8 *hash_val);
int skein_512_final_pad(struct skein_512_ctx *ctx, u8 *hash_val);
int skein_1024_final_pad(struct skein1024_ctx *ctx, u8 *hash_val);
#ifndef SKEIN_TREE_HASH
#define SKEIN_TREE_HASH (1)
#endif
#if SKEIN_TREE_HASH
int skein_256_output(struct skein_256_ctx *ctx, u8 *hashVal);
int skein_512_output(struct skein_512_ctx *ctx, u8 *hashVal);
int skein_1024_output(struct skein1024_ctx *ctx, u8 *hashVal);
int skein_256_output(struct skein_256_ctx *ctx, u8 *hash_val);
int skein_512_output(struct skein_512_ctx *ctx, u8 *hash_val);
int skein_1024_output(struct skein1024_ctx *ctx, u8 *hash_val);
#endif
/*****************************************************************
@ -207,7 +208,7 @@ int skein_1024_output(struct skein1024_ctx *ctx, u8 *hashVal);
#define SKEIN_CFG_STR_LEN (4*8)
/* bit field definitions in config block treeInfo word */
/* bit field definitions in config block tree_info word */
#define SKEIN_CFG_TREE_LEAF_SIZE_POS (0)
#define SKEIN_CFG_TREE_NODE_SIZE_POS (8)
#define SKEIN_CFG_TREE_MAX_LEVEL_POS (16)
@ -219,46 +220,46 @@ int skein_1024_output(struct skein1024_ctx *ctx, u8 *hashVal);
#define SKEIN_CFG_TREE_MAX_LEVEL_MSK (((u64)0xFF) << \
SKEIN_CFG_TREE_MAX_LEVEL_POS)
#define SKEIN_CFG_TREE_INFO(leaf, node, maxLvl) \
#define SKEIN_CFG_TREE_INFO(leaf, node, max_lvl) \
((((u64)(leaf)) << SKEIN_CFG_TREE_LEAF_SIZE_POS) | \
(((u64)(node)) << SKEIN_CFG_TREE_NODE_SIZE_POS) | \
(((u64)(maxLvl)) << SKEIN_CFG_TREE_MAX_LEVEL_POS))
(((u64)(max_lvl)) << SKEIN_CFG_TREE_MAX_LEVEL_POS))
/* use as treeInfo in InitExt() call for sequential processing */
/* use as tree_info in InitExt() call for sequential processing */
#define SKEIN_CFG_TREE_INFO_SEQUENTIAL SKEIN_CFG_TREE_INFO(0, 0, 0)
/*
** Skein macros for getting/setting tweak words, etc.
** These are useful for partial input bytes, hash tree init/update, etc.
**/
#define Skein_Get_Tweak(ctxPtr, TWK_NUM) ((ctxPtr)->h.T[TWK_NUM])
#define Skein_Set_Tweak(ctxPtr, TWK_NUM, tVal) { \
(ctxPtr)->h.T[TWK_NUM] = (tVal); \
#define Skein_Get_Tweak(ctx_ptr, TWK_NUM) ((ctx_ptr)->h.T[TWK_NUM])
#define Skein_Set_Tweak(ctx_ptr, TWK_NUM, t_val) { \
(ctx_ptr)->h.T[TWK_NUM] = (t_val); \
}
#define Skein_Get_T0(ctxPtr) Skein_Get_Tweak(ctxPtr, 0)
#define Skein_Get_T1(ctxPtr) Skein_Get_Tweak(ctxPtr, 1)
#define Skein_Set_T0(ctxPtr, T0) Skein_Set_Tweak(ctxPtr, 0, T0)
#define Skein_Set_T1(ctxPtr, T1) Skein_Set_Tweak(ctxPtr, 1, T1)
#define Skein_Get_T0(ctx_ptr) Skein_Get_Tweak(ctx_ptr, 0)
#define Skein_Get_T1(ctx_ptr) Skein_Get_Tweak(ctx_ptr, 1)
#define Skein_Set_T0(ctx_ptr, T0) Skein_Set_Tweak(ctx_ptr, 0, T0)
#define Skein_Set_T1(ctx_ptr, T1) Skein_Set_Tweak(ctx_ptr, 1, T1)
/* set both tweak words at once */
#define Skein_Set_T0_T1(ctxPtr, T0, T1) \
#define Skein_Set_T0_T1(ctx_ptr, T0, T1) \
{ \
Skein_Set_T0(ctxPtr, (T0)); \
Skein_Set_T1(ctxPtr, (T1)); \
Skein_Set_T0(ctx_ptr, (T0)); \
Skein_Set_T1(ctx_ptr, (T1)); \
}
#define Skein_Set_Type(ctxPtr, BLK_TYPE) \
Skein_Set_T1(ctxPtr, SKEIN_T1_BLK_TYPE_##BLK_TYPE)
#define Skein_Set_Type(ctx_ptr, BLK_TYPE) \
Skein_Set_T1(ctx_ptr, SKEIN_T1_BLK_TYPE_##BLK_TYPE)
/*
* setup for starting with a new type:
* h.T[0]=0; h.T[1] = NEW_TYPE; h.bCnt=0;
* h.T[0]=0; h.T[1] = NEW_TYPE; h.b_cnt=0;
*/
#define Skein_Start_New_Type(ctxPtr, BLK_TYPE) { \
Skein_Set_T0_T1(ctxPtr, 0, SKEIN_T1_FLAG_FIRST | \
#define Skein_Start_New_Type(ctx_ptr, BLK_TYPE) { \
Skein_Set_T0_T1(ctx_ptr, 0, SKEIN_T1_FLAG_FIRST | \
SKEIN_T1_BLK_TYPE_##BLK_TYPE); \
(ctxPtr)->h.bCnt = 0; \
(ctx_ptr)->h.b_cnt = 0; \
}
#define Skein_Clear_First_Flag(hdr) { \
@ -278,14 +279,14 @@ int skein_1024_output(struct skein1024_ctx *ctx, u8 *hashVal);
#ifdef SKEIN_DEBUG /* examine/display intermediate values? */
#include "skein_debug.h"
#else /* default is no callouts */
#define Skein_Show_Block(bits, ctx, X, blkPtr, wPtr, ksEvenPtr, ksOddPtr)
#define Skein_Show_Block(bits, ctx, X, blk_ptr, w_ptr, ks_event_ptr, ks_odd_ptr)
#define Skein_Show_Round(bits, ctx, r, X)
#define Skein_Show_R_Ptr(bits, ctx, r, X_ptr)
#define Skein_Show_Final(bits, ctx, cnt, outPtr)
#define Skein_Show_Key(bits, ctx, key, keyBytes)
#define Skein_Show_Final(bits, ctx, cnt, out_ptr)
#define Skein_Show_Key(bits, ctx, key, key_bytes)
#endif
#define Skein_Assert(x, retCode)/* ignore all Asserts, for performance */
#define Skein_Assert(x, ret_code)/* ignore all Asserts, for performance */
#define Skein_assert(x)
/*****************************************************************

28
drivers/staging/skein/include/skeinApi.h
View File

@ -59,7 +59,7 @@ OTHER DEALINGS IN THE SOFTWARE.
*
* // Now update Skein with any number of message bits. A function that
* // takes a number of bytes is also available.
* skein_update_bits(&ctx, message, msgLength);
* skein_update_bits(&ctx, message, msg_length);
*
* // Now get the result of the Skein hash. The output buffer must be
* // large enough to hold the request number of output bits. The application
@ -99,8 +99,8 @@ enum skein_size {
* structures as well.
*/
struct skein_ctx {
u64 skeinSize;
u64 XSave[SKEIN_MAX_STATE_WORDS]; /* save area for state variables */
u64 skein_size;
u64 X_save[SKEIN_MAX_STATE_WORDS]; /* save area for state variables */
union {
struct skein_ctx_hdr h;
struct skein_256_ctx s256;
@ -133,13 +133,13 @@ int skein_ctx_prepare(struct skein_ctx *ctx, enum skein_size size);
*
* @param ctx
* Pointer to a Skein context.
* @param hashBitLen
* @param hash_bit_len
* Number of MAC hash bits to compute
* @return
* SKEIN_SUCESS of SKEIN_FAIL
* @see skein_reset
*/
int skein_init(struct skein_ctx *ctx, size_t hashBitLen);
int skein_init(struct skein_ctx *ctx, size_t hash_bit_len);
/**
* Resets a Skein context for further use.
@ -166,15 +166,15 @@ void skein_reset(struct skein_ctx *ctx);
* Pointer to an empty or preinitialized Skein MAC context
* @param key
* Pointer to key bytes or NULL
* @param keyLen
* @param key_len
* Length of the key in bytes or zero
* @param hashBitLen
* @param hash_bit_len
* Number of MAC hash bits to compute
* @return
* SKEIN_SUCESS of SKEIN_FAIL
*/
int skein_mac_init(struct skein_ctx *ctx, const u8 *key, size_t keyLen,
size_t hashBitLen);
int skein_mac_init(struct skein_ctx *ctx, const u8 *key, size_t key_len,
size_t hash_bit_len);
/**
* Update Skein with the next part of the message.
@ -183,13 +183,13 @@ int skein_mac_init(struct skein_ctx *ctx, const u8 *key, size_t keyLen,
* Pointer to initialized Skein context
* @param msg
* Pointer to the message.
* @param msgByteCnt
* @param msg_byte_cnt
* Length of the message in @b bytes
* @return
* Success or error code.
*/
int skein_update(struct skein_ctx *ctx, const u8 *msg,
size_t msgByteCnt);
size_t msg_byte_cnt);
/**
* Update the hash with a message bit string.
@ -201,11 +201,11 @@ int skein_update(struct skein_ctx *ctx, const u8 *msg,
* Pointer to initialized Skein context
* @param msg
* Pointer to the message.
* @param msgBitCnt
* @param msg_bit_cnt
* Length of the message in @b bits.
*/
int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
size_t msgBitCnt);
size_t msg_bit_cnt);
/**
* Finalize Skein and return the hash.
@ -217,7 +217,7 @@ int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
* Pointer to initialized Skein context
* @param hash
* Pointer to buffer that receives the hash. The buffer must be large
* enough to store @c hashBitLen bits.
* enough to store @c hash_bit_len bits.
* @return
* Success or error code.
* @see skein_reset

12
drivers/staging/skein/include/skein_block.h
View File

@ -12,11 +12,11 @@
#include <skein.h> /* get the Skein API definitions */
void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd);
void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd);
void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd);
void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add);
void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add);
void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add);
#endif

54
drivers/staging/skein/include/threefishApi.h
View File

@ -18,13 +18,13 @@
*
@code
// Threefish cipher context data
struct threefish_key keyCtx;
struct threefish_key key_ctx;
// Initialize the context
threefish_set_key(&keyCtx, Threefish512, key, tweak);
threefish_set_key(&key_ctx, Threefish512, key, tweak);
// Encrypt
threefish_encrypt_block_bytes(&keyCtx, input, cipher);
threefish_encrypt_block_bytes(&key_ctx, input, cipher);
@endcode
*/
@ -51,7 +51,7 @@ enum threefish_size {
* structures as well.
*/
struct threefish_key {
u64 stateSize;
u64 state_size;
u64 key[SKEIN_MAX_STATE_WORDS+1]; /* max number of key words*/
u64 tweak[3];
};
@ -63,106 +63,106 @@ struct threefish_key {
* the given size. The key data must have the same length (number of bits)
* as the state size
*
* @param keyCtx
* @param key_ctx
* Pointer to a Threefish key structure.
* @param size
* Which Skein size to use.
* @param keyData
* @param key_data
* Pointer to the key words (word has 64 bits).
* @param tweak
* Pointer to the two tweak words (word has 64 bits).
*/
void threefish_set_key(struct threefish_key *keyCtx,
enum threefish_size stateSize,
u64 *keyData, u64 *tweak);
void threefish_set_key(struct threefish_key *key_ctx,
enum threefish_size state_size,
u64 *key_data, u64 *tweak);
/**
* Encrypt Threefisch block (bytes).
*
* The buffer must have at least the same length (number of bits) aas the
* state size for this key. The function uses the first @c stateSize bits
* state size for this key. The function uses the first @c state_size bits
* of the input buffer, encrypts them and stores the result in the output
* buffer.
*
* @param keyCtx
* @param key_ctx
* Pointer to a Threefish key structure.
* @param in
* Poionter to plaintext data buffer.
* @param out
* Pointer to cipher buffer.
*/
void threefish_encrypt_block_bytes(struct threefish_key *keyCtx, u8 *in,
void threefish_encrypt_block_bytes(struct threefish_key *key_ctx, u8 *in,
u8 *out);
/**
* Encrypt Threefisch block (words).
*
* The buffer must have at least the same length (number of bits) aas the
* state size for this key. The function uses the first @c stateSize bits
* state size for this key. The function uses the first @c state_size bits
* of the input buffer, encrypts them and stores the result in the output
* buffer.
*
* The wordsize ist set to 64 bits.
*
* @param keyCtx
* @param key_ctx
* Pointer to a Threefish key structure.
* @param in
* Poionter to plaintext data buffer.
* @param out
* Pointer to cipher buffer.
*/
void threefish_encrypt_block_words(struct threefish_key *keyCtx, u64 *in,
void threefish_encrypt_block_words(struct threefish_key *key_ctx, u64 *in,
u64 *out);
/**
* Decrypt Threefisch block (bytes).
*
* The buffer must have at least the same length (number of bits) aas the
* state size for this key. The function uses the first @c stateSize bits
* state size for this key. The function uses the first @c state_size bits
* of the input buffer, decrypts them and stores the result in the output
* buffer
*
* @param keyCtx
* @param key_ctx
* Pointer to a Threefish key structure.
* @param in
* Poionter to cipher data buffer.
* @param out
* Pointer to plaintext buffer.
*/
void threefish_decrypt_block_bytes(struct threefish_key *keyCtx, u8 *in,
void threefish_decrypt_block_bytes(struct threefish_key *key_ctx, u8 *in,
u8 *out);
/**
* Decrypt Threefisch block (words).
*
* The buffer must have at least the same length (number of bits) aas the
* state size for this key. The function uses the first @c stateSize bits
* state size for this key. The function uses the first @c state_size bits
* of the input buffer, encrypts them and stores the result in the output
* buffer.
*
* The wordsize ist set to 64 bits.
*
* @param keyCtx
* @param key_ctx
* Pointer to a Threefish key structure.
* @param in
* Poionter to cipher data buffer.
* @param out
* Pointer to plaintext buffer.
*/
void threefish_decrypt_block_words(struct threefish_key *keyCtx, u64 *in,
void threefish_decrypt_block_words(struct threefish_key *key_ctx, u64 *in,
u64 *out);
void threefish_encrypt_256(struct threefish_key *keyCtx, u64 *input,
void threefish_encrypt_256(struct threefish_key *key_ctx, u64 *input,
u64 *output);
void threefish_encrypt_512(struct threefish_key *keyCtx, u64 *input,
void threefish_encrypt_512(struct threefish_key *key_ctx, u64 *input,
u64 *output);
void threefish_encrypt_1024(struct threefish_key *keyCtx, u64 *input,
void threefish_encrypt_1024(struct threefish_key *key_ctx, u64 *input,
u64 *output);
void threefish_decrypt_256(struct threefish_key *keyCtx, u64 *input,
void threefish_decrypt_256(struct threefish_key *key_ctx, u64 *input,
u64 *output);
void threefish_decrypt_512(struct threefish_key *keyCtx, u64 *input,
void threefish_decrypt_512(struct threefish_key *key_ctx, u64 *input,
u64 *output);
void threefish_decrypt_1024(struct threefish_key *keyCtx, u64 *input,
void threefish_decrypt_1024(struct threefish_key *key_ctx, u64 *input,
u64 *output);
/**
* @}

415
drivers/staging/skein/skein.c
View File

@ -21,17 +21,17 @@
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* init the context for a straight hashing operation */
int skein_256_init(struct skein_256_ctx *ctx, size_t hashBitLen)
int skein_256_init(struct skein_256_ctx *ctx, size_t hash_bit_len)
{
union {
u8 b[SKEIN_256_STATE_BYTES];
u64 w[SKEIN_256_STATE_WORDS];
u8 b[SKEIN_256_STATE_BYTES];
u64 w[SKEIN_256_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
Skein_Assert(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
ctx->h.hash_bit_len = hash_bit_len; /* output hash bit count */
switch (hashBitLen) { /* use pre-computed values, where available */
switch (hash_bit_len) { /* use pre-computed values, where available */
case 256:
memcpy(ctx->X, SKEIN_256_IV_256, sizeof(ctx->X));
break;
@ -56,7 +56,7 @@ int skein_256_init(struct skein_256_ctx *ctx, size_t hashBitLen)
/* set the schema, version */
cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER);
/* hash result length in bits */
cfg.w[1] = Skein_Swap64(hashBitLen);
cfg.w[1] = Skein_Swap64(hash_bit_len);
cfg.w[2] = Skein_Swap64(SKEIN_CFG_TREE_INFO_SEQUENTIAL);
/* zero pad config block */
memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0]));
@ -67,7 +67,7 @@ int skein_256_init(struct skein_256_ctx *ctx, size_t hashBitLen)
skein_256_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
break;
}
/* The chaining vars ctx->X are now initialized for hashBitLen. */
/* The chaining vars ctx->X are now initialized for hash_bit_len. */
/* Set up to process the data message portion of the hash (default) */
Skein_Start_New_Type(ctx, MSG); /* T0=0, T1= MSG type */
@ -76,34 +76,34 @@ int skein_256_init(struct skein_256_ctx *ctx, size_t hashBitLen)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* init the context for a MAC and/or tree hash operation */
/* [identical to skein_256_init() when keyBytes == 0 && \
* treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */
int skein_256_init_ext(struct skein_256_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes)
/* [identical to skein_256_init() when key_bytes == 0 && \
* tree_info == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */
int skein_256_init_ext(struct skein_256_ctx *ctx, size_t hash_bit_len,
u64 tree_info, const u8 *key, size_t key_bytes)
{
union {
u8 b[SKEIN_256_STATE_BYTES];
u64 w[SKEIN_256_STATE_WORDS];
u64 w[SKEIN_256_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
Skein_Assert(keyBytes == 0 || key != NULL, SKEIN_FAIL);
Skein_Assert(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
Skein_Assert(key_bytes == 0 || key != NULL, SKEIN_FAIL);
/* compute the initial chaining values ctx->X[], based on key */
if (keyBytes == 0) { /* is there a key? */
if (key_bytes == 0) { /* is there a key? */
/* no key: use all zeroes as key for config block */
memset(ctx->X, 0, sizeof(ctx->X));
} else { /* here to pre-process a key */
Skein_assert(sizeof(cfg.b) >= sizeof(ctx->X));
/* do a mini-Init right here */
/* set output hash bit count = state size */
ctx->h.hashBitLen = 8*sizeof(ctx->X);
ctx->h.hash_bit_len = 8*sizeof(ctx->X);
/* set tweaks: T0 = 0; T1 = KEY type */
Skein_Start_New_Type(ctx, KEY);
/* zero the initial chaining variables */
memset(ctx->X, 0, sizeof(ctx->X));
/* hash the key */
skein_256_update(ctx, key, keyBytes);
skein_256_update(ctx, key, key_bytes);
/* put result into cfg.b[] */
skein_256_final_pad(ctx, cfg.b);
/* copy over into ctx->X[] */
@ -114,18 +114,18 @@ int skein_256_init_ext(struct skein_256_ctx *ctx, size_t hashBitLen,
* precomputed for each key)
*/
/* output hash bit count */
ctx->h.hashBitLen = hashBitLen;
ctx->h.hash_bit_len = hash_bit_len;
Skein_Start_New_Type(ctx, CFG_FINAL);
/* pre-pad cfg.w[] with zeroes */
memset(&cfg.w, 0, sizeof(cfg.w));
cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER);
/* hash result length in bits */
cfg.w[1] = Skein_Swap64(hashBitLen);
cfg.w[1] = Skein_Swap64(hash_bit_len);
/* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */
cfg.w[2] = Skein_Swap64(treeInfo);
cfg.w[2] = Skein_Swap64(tree_info);
Skein_Show_Key(256, &ctx->h, key, keyBytes);
Skein_Show_Key(256, &ctx->h, key, key_bytes);
/* compute the initial chaining values from config block */
skein_256_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
@ -140,52 +140,53 @@ int skein_256_init_ext(struct skein_256_ctx *ctx, size_t hashBitLen,
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* process the input bytes */
int skein_256_update(struct skein_256_ctx *ctx, const u8 *msg,
size_t msgByteCnt)
size_t msg_byte_cnt)
{
size_t n;
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* process full blocks, if any */
if (msgByteCnt + ctx->h.bCnt > SKEIN_256_BLOCK_BYTES) {
if (msg_byte_cnt + ctx->h.b_cnt > SKEIN_256_BLOCK_BYTES) {
/* finish up any buffered message data */
if (ctx->h.bCnt) {
if (ctx->h.b_cnt) {
/* # bytes free in buffer b[] */
n = SKEIN_256_BLOCK_BYTES - ctx->h.bCnt;
n = SKEIN_256_BLOCK_BYTES - ctx->h.b_cnt;
if (n) {
/* check on our logic here */
Skein_assert(n < msgByteCnt);
memcpy(&ctx->b[ctx->h.bCnt], msg, n);
msgByteCnt -= n;
Skein_assert(n < msg_byte_cnt);
memcpy(&ctx->b[ctx->h.b_cnt], msg, n);
msg_byte_cnt -= n;
msg += n;
ctx->h.bCnt += n;
ctx->h.b_cnt += n;
}
Skein_assert(ctx->h.bCnt == SKEIN_256_BLOCK_BYTES);
Skein_assert(ctx->h.b_cnt == SKEIN_256_BLOCK_BYTES);
skein_256_process_block(ctx, ctx->b, 1,
SKEIN_256_BLOCK_BYTES);
ctx->h.bCnt = 0;
ctx->h.b_cnt = 0;
}
/*
* now process any remaining full blocks, directly from input
* message data
*/
if (msgByteCnt > SKEIN_256_BLOCK_BYTES) {
if (msg_byte_cnt > SKEIN_256_BLOCK_BYTES) {
/* number of full blocks to process */
n = (msgByteCnt-1) / SKEIN_256_BLOCK_BYTES;
n = (msg_byte_cnt-1) / SKEIN_256_BLOCK_BYTES;
skein_256_process_block(ctx, msg, n,
SKEIN_256_BLOCK_BYTES);
msgByteCnt -= n * SKEIN_256_BLOCK_BYTES;
msg_byte_cnt -= n * SKEIN_256_BLOCK_BYTES;
msg += n * SKEIN_256_BLOCK_BYTES;
}
Skein_assert(ctx->h.bCnt == 0);
Skein_assert(ctx->h.b_cnt == 0);
}
/* copy any remaining source message data bytes into b[] */
if (msgByteCnt) {
Skein_assert(msgByteCnt + ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.bCnt], msg, msgByteCnt);
ctx->h.bCnt += msgByteCnt;
if (msg_byte_cnt) {
Skein_assert(msg_byte_cnt + ctx->h.b_cnt <=
SKEIN_256_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.b_cnt], msg, msg_byte_cnt);
ctx->h.b_cnt += msg_byte_cnt;
}
return SKEIN_SUCCESS;
@ -193,47 +194,47 @@ int skein_256_update(struct skein_256_ctx *ctx, const u8 *msg,
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* finalize the hash computation and output the result */
int skein_256_final(struct skein_256_ctx *ctx, u8 *hashVal)
int skein_256_final(struct skein_256_ctx *ctx, u8 *hash_val)
{
size_t i, n, byteCnt;
size_t i, n, byte_cnt;
u64 X[SKEIN_256_STATE_WORDS];
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.bCnt < SKEIN_256_BLOCK_BYTES)
memset(&ctx->b[ctx->h.bCnt], 0,
SKEIN_256_BLOCK_BYTES - ctx->h.bCnt);
if (ctx->h.b_cnt < SKEIN_256_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
SKEIN_256_BLOCK_BYTES - ctx->h.b_cnt);
/* process the final block */
skein_256_process_block(ctx, ctx->b, 1, ctx->h.bCnt);
skein_256_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* now output the result */
/* total number of output bytes */
byteCnt = (ctx->h.hashBitLen + 7) >> 3;
byte_cnt = (ctx->h.hash_bit_len + 7) >> 3;
/* run Threefish in "counter mode" to generate output */
/* zero out b[], so it can hold the counter */
memset(ctx->b, 0, sizeof(ctx->b));
/* keep a local copy of counter mode "key" */
memcpy(X, ctx->X, sizeof(X));
for (i = 0; i*SKEIN_256_BLOCK_BYTES < byteCnt; i++) {
for (i = 0; i*SKEIN_256_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* run "counter mode" */
skein_256_process_block(ctx, ctx->b, 1, sizeof(u64));
/* number of output bytes left to go */
n = byteCnt - i*SKEIN_256_BLOCK_BYTES;
n = byte_cnt - i*SKEIN_256_BLOCK_BYTES;
if (n >= SKEIN_256_BLOCK_BYTES)
n = SKEIN_256_BLOCK_BYTES;
/* "output" the ctr mode bytes */
Skein_Put64_LSB_First(hashVal+i*SKEIN_256_BLOCK_BYTES, ctx->X,
Skein_Put64_LSB_First(hash_val+i*SKEIN_256_BLOCK_BYTES, ctx->X,
n);
Skein_Show_Final(256, &ctx->h, n,
hashVal+i*SKEIN_256_BLOCK_BYTES);
hash_val+i*SKEIN_256_BLOCK_BYTES);
/* restore the counter mode key for next time */
memcpy(ctx->X, X, sizeof(X));
}
@ -246,17 +247,17 @@ int skein_256_final(struct skein_256_ctx *ctx, u8 *hashVal)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* init the context for a straight hashing operation */
int skein_512_init(struct skein_512_ctx *ctx, size_t hashBitLen)
int skein_512_init(struct skein_512_ctx *ctx, size_t hash_bit_len)
{
union {
u8 b[SKEIN_512_STATE_BYTES];
u64 w[SKEIN_512_STATE_WORDS];
u8 b[SKEIN_512_STATE_BYTES];
u64 w[SKEIN_512_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
Skein_Assert(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
ctx->h.hash_bit_len = hash_bit_len; /* output hash bit count */
switch (hashBitLen) { /* use pre-computed values, where available */
switch (hash_bit_len) { /* use pre-computed values, where available */
case 512:
memcpy(ctx->X, SKEIN_512_IV_512, sizeof(ctx->X));
break;
@ -281,7 +282,7 @@ int skein_512_init(struct skein_512_ctx *ctx, size_t hashBitLen)
/* set the schema, version */
cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER);
/* hash result length in bits */
cfg.w[1] = Skein_Swap64(hashBitLen);
cfg.w[1] = Skein_Swap64(hash_bit_len);
cfg.w[2] = Skein_Swap64(SKEIN_CFG_TREE_INFO_SEQUENTIAL);
/* zero pad config block */
memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0]));
@ -295,7 +296,7 @@ int skein_512_init(struct skein_512_ctx *ctx, size_t hashBitLen)
/*
* The chaining vars ctx->X are now initialized for the given
* hashBitLen.
* hash_bit_len.
*/
/* Set up to process the data message portion of the hash (default) */
Skein_Start_New_Type(ctx, MSG); /* T0=0, T1= MSG type */
@ -305,34 +306,34 @@ int skein_512_init(struct skein_512_ctx *ctx, size_t hashBitLen)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* init the context for a MAC and/or tree hash operation */
/* [identical to skein_512_init() when keyBytes == 0 && \
* treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */
int skein_512_init_ext(struct skein_512_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes)
/* [identical to skein_512_init() when key_bytes == 0 && \
* tree_info == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */
int skein_512_init_ext(struct skein_512_ctx *ctx, size_t hash_bit_len,
u64 tree_info, const u8 *key, size_t key_bytes)
{
union {
u8 b[SKEIN_512_STATE_BYTES];
u64 w[SKEIN_512_STATE_WORDS];
u8 b[SKEIN_512_STATE_BYTES];
u64 w[SKEIN_512_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
Skein_Assert(keyBytes == 0 || key != NULL, SKEIN_FAIL);
Skein_Assert(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
Skein_Assert(key_bytes == 0 || key != NULL, SKEIN_FAIL);
/* compute the initial chaining values ctx->X[], based on key */
if (keyBytes == 0) { /* is there a key? */
if (key_bytes == 0) { /* is there a key? */
/* no key: use all zeroes as key for config block */
memset(ctx->X, 0, sizeof(ctx->X));
} else { /* here to pre-process a key */
Skein_assert(sizeof(cfg.b) >= sizeof(ctx->X));
/* do a mini-Init right here */
/* set output hash bit count = state size */
ctx->h.hashBitLen = 8*sizeof(ctx->X);
ctx->h.hash_bit_len = 8*sizeof(ctx->X);
/* set tweaks: T0 = 0; T1 = KEY type */
Skein_Start_New_Type(ctx, KEY);
/* zero the initial chaining variables */
memset(ctx->X, 0, sizeof(ctx->X));
/* hash the key */
skein_512_update(ctx, key, keyBytes);
skein_512_update(ctx, key, key_bytes);
/* put result into cfg.b[] */
skein_512_final_pad(ctx, cfg.b);
/* copy over into ctx->X[] */
@ -342,18 +343,18 @@ int skein_512_init_ext(struct skein_512_ctx *ctx, size_t hashBitLen,
* build/process the config block, type == CONFIG (could be
* precomputed for each key)
*/
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
ctx->h.hash_bit_len = hash_bit_len; /* output hash bit count */
Skein_Start_New_Type(ctx, CFG_FINAL);
/* pre-pad cfg.w[] with zeroes */
memset(&cfg.w, 0, sizeof(cfg.w));
cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER);
/* hash result length in bits */
cfg.w[1] = Skein_Swap64(hashBitLen);
cfg.w[1] = Skein_Swap64(hash_bit_len);
/* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */
cfg.w[2] = Skein_Swap64(treeInfo);
cfg.w[2] = Skein_Swap64(tree_info);
Skein_Show_Key(512, &ctx->h, key, keyBytes);
Skein_Show_Key(512, &ctx->h, key, key_bytes);
/* compute the initial chaining values from config block */
skein_512_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
@ -368,52 +369,53 @@ int skein_512_init_ext(struct skein_512_ctx *ctx, size_t hashBitLen,
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* process the input bytes */
int skein_512_update(struct skein_512_ctx *ctx, const u8 *msg,
size_t msgByteCnt)
size_t msg_byte_cnt)
{
size_t n;
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* process full blocks, if any */
if (msgByteCnt + ctx->h.bCnt > SKEIN_512_BLOCK_BYTES) {
if (msg_byte_cnt + ctx->h.b_cnt > SKEIN_512_BLOCK_BYTES) {
/* finish up any buffered message data */
if (ctx->h.bCnt) {
if (ctx->h.b_cnt) {
/* # bytes free in buffer b[] */
n = SKEIN_512_BLOCK_BYTES - ctx->h.bCnt;
n = SKEIN_512_BLOCK_BYTES - ctx->h.b_cnt;
if (n) {
/* check on our logic here */
Skein_assert(n < msgByteCnt);
memcpy(&ctx->b[ctx->h.bCnt], msg, n);
msgByteCnt -= n;
Skein_assert(n < msg_byte_cnt);
memcpy(&ctx->b[ctx->h.b_cnt], msg, n);
msg_byte_cnt -= n;
msg += n;
ctx->h.bCnt += n;
ctx->h.b_cnt += n;
}
Skein_assert(ctx->h.bCnt == SKEIN_512_BLOCK_BYTES);
Skein_assert(ctx->h.b_cnt == SKEIN_512_BLOCK_BYTES);
skein_512_process_block(ctx, ctx->b, 1,
SKEIN_512_BLOCK_BYTES);
ctx->h.bCnt = 0;
ctx->h.b_cnt = 0;
}
/*
* now process any remaining full blocks, directly from input
* message data
*/
if (msgByteCnt > SKEIN_512_BLOCK_BYTES) {
if (msg_byte_cnt > SKEIN_512_BLOCK_BYTES) {
/* number of full blocks to process */
n = (msgByteCnt-1) / SKEIN_512_BLOCK_BYTES;
n = (msg_byte_cnt-1) / SKEIN_512_BLOCK_BYTES;
skein_512_process_block(ctx, msg, n,
SKEIN_512_BLOCK_BYTES);
msgByteCnt -= n * SKEIN_512_BLOCK_BYTES;
msg_byte_cnt -= n * SKEIN_512_BLOCK_BYTES;
msg += n * SKEIN_512_BLOCK_BYTES;
}
Skein_assert(ctx->h.bCnt == 0);
Skein_assert(ctx->h.b_cnt == 0);
}
/* copy any remaining source message data bytes into b[] */
if (msgByteCnt) {
Skein_assert(msgByteCnt + ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.bCnt], msg, msgByteCnt);
ctx->h.bCnt += msgByteCnt;
if (msg_byte_cnt) {
Skein_assert(msg_byte_cnt + ctx->h.b_cnt <=
SKEIN_512_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.b_cnt], msg, msg_byte_cnt);
ctx->h.b_cnt += msg_byte_cnt;
}
return SKEIN_SUCCESS;
@ -421,47 +423,47 @@ int skein_512_update(struct skein_512_ctx *ctx, const u8 *msg,
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* finalize the hash computation and output the result */
int skein_512_final(struct skein_512_ctx *ctx, u8 *hashVal)
int skein_512_final(struct skein_512_ctx *ctx, u8 *hash_val)
{
size_t i, n, byteCnt;
size_t i, n, byte_cnt;
u64 X[SKEIN_512_STATE_WORDS];
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.bCnt < SKEIN_512_BLOCK_BYTES)
memset(&ctx->b[ctx->h.bCnt], 0,
SKEIN_512_BLOCK_BYTES - ctx->h.bCnt);
if (ctx->h.b_cnt < SKEIN_512_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
SKEIN_512_BLOCK_BYTES - ctx->h.b_cnt);
/* process the final block */
skein_512_process_block(ctx, ctx->b, 1, ctx->h.bCnt);
skein_512_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* now output the result */
/* total number of output bytes */
byteCnt = (ctx->h.hashBitLen + 7) >> 3;
byte_cnt = (ctx->h.hash_bit_len + 7) >> 3;
/* run Threefish in "counter mode" to generate output */
/* zero out b[], so it can hold the counter */
memset(ctx->b, 0, sizeof(ctx->b));
/* keep a local copy of counter mode "key" */
memcpy(X, ctx->X, sizeof(X));
for (i = 0; i*SKEIN_512_BLOCK_BYTES < byteCnt; i++) {
for (i = 0; i*SKEIN_512_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* run "counter mode" */
skein_512_process_block(ctx, ctx->b, 1, sizeof(u64));
/* number of output bytes left to go */
n = byteCnt - i*SKEIN_512_BLOCK_BYTES;
n = byte_cnt - i*SKEIN_512_BLOCK_BYTES;
if (n >= SKEIN_512_BLOCK_BYTES)
n = SKEIN_512_BLOCK_BYTES;
/* "output" the ctr mode bytes */
Skein_Put64_LSB_First(hashVal+i*SKEIN_512_BLOCK_BYTES, ctx->X,
Skein_Put64_LSB_First(hash_val+i*SKEIN_512_BLOCK_BYTES, ctx->X,
n);
Skein_Show_Final(512, &ctx->h, n,
hashVal+i*SKEIN_512_BLOCK_BYTES);
hash_val+i*SKEIN_512_BLOCK_BYTES);
/* restore the counter mode key for next time */
memcpy(ctx->X, X, sizeof(X));
}
@ -474,17 +476,17 @@ int skein_512_final(struct skein_512_ctx *ctx, u8 *hashVal)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* init the context for a straight hashing operation */
int skein_1024_init(struct skein1024_ctx *ctx, size_t hashBitLen)
int skein_1024_init(struct skein1024_ctx *ctx, size_t hash_bit_len)
{
union {
u8 b[SKEIN1024_STATE_BYTES];
u64 w[SKEIN1024_STATE_WORDS];
u8 b[SKEIN1024_STATE_BYTES];
u64 w[SKEIN1024_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
ctx->h.hashBitLen = hashBitLen; /* output hash bit count */
Skein_Assert(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
ctx->h.hash_bit_len = hash_bit_len; /* output hash bit count */
switch (hashBitLen) { /* use pre-computed values, where available */
switch (hash_bit_len) { /* use pre-computed values, where available */
case 512:
memcpy(ctx->X, SKEIN1024_IV_512, sizeof(ctx->X));
break;
@ -506,7 +508,7 @@ int skein_1024_init(struct skein1024_ctx *ctx, size_t hashBitLen)
/* set the schema, version */
cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER);
/* hash result length in bits */
cfg.w[1] = Skein_Swap64(hashBitLen);
cfg.w[1] = Skein_Swap64(hash_bit_len);
cfg.w[2] = Skein_Swap64(SKEIN_CFG_TREE_INFO_SEQUENTIAL);
/* zero pad config block */
memset(&cfg.w[3], 0, sizeof(cfg) - 3*sizeof(cfg.w[0]));
@ -518,7 +520,7 @@ int skein_1024_init(struct skein1024_ctx *ctx, size_t hashBitLen)
break;
}
/* The chaining vars ctx->X are now initialized for the hashBitLen. */
/* The chaining vars ctx->X are now initialized for the hash_bit_len. */
/* Set up to process the data message portion of the hash (default) */
Skein_Start_New_Type(ctx, MSG); /* T0=0, T1= MSG type */
@ -527,34 +529,34 @@ int skein_1024_init(struct skein1024_ctx *ctx, size_t hashBitLen)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* init the context for a MAC and/or tree hash operation */
/* [identical to skein_1024_init() when keyBytes == 0 && \
* treeInfo == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */
int skein_1024_init_ext(struct skein1024_ctx *ctx, size_t hashBitLen,
u64 treeInfo, const u8 *key, size_t keyBytes)
/* [identical to skein_1024_init() when key_bytes == 0 && \
* tree_info == SKEIN_CFG_TREE_INFO_SEQUENTIAL] */
int skein_1024_init_ext(struct skein1024_ctx *ctx, size_t hash_bit_len,
u64 tree_info, const u8 *key, size_t key_bytes)
{
union {
u8 b[SKEIN1024_STATE_BYTES];
u64 w[SKEIN1024_STATE_WORDS];
u8 b[SKEIN1024_STATE_BYTES];
u64 w[SKEIN1024_STATE_WORDS];
} cfg; /* config block */
Skein_Assert(hashBitLen > 0, SKEIN_BAD_HASHLEN);
Skein_Assert(keyBytes == 0 || key != NULL, SKEIN_FAIL);
Skein_Assert(hash_bit_len > 0, SKEIN_BAD_HASHLEN);
Skein_Assert(key_bytes == 0 || key != NULL, SKEIN_FAIL);
/* compute the initial chaining values ctx->X[], based on key */
if (keyBytes == 0) { /* is there a key? */
if (key_bytes == 0) { /* is there a key? */
/* no key: use all zeroes as key for config block */
memset(ctx->X, 0, sizeof(ctx->X));
} else { /* here to pre-process a key */
Skein_assert(sizeof(cfg.b) >= sizeof(ctx->X));
/* do a mini-Init right here */
/* set output hash bit count = state size */
ctx->h.hashBitLen = 8*sizeof(ctx->X);
ctx->h.hash_bit_len = 8*sizeof(ctx->X);
/* set tweaks: T0 = 0; T1 = KEY type */
Skein_Start_New_Type(ctx, KEY);
/* zero the initial chaining variables */
memset(ctx->X, 0, sizeof(ctx->X));
/* hash the key */
skein_1024_update(ctx, key, keyBytes);
skein_1024_update(ctx, key, key_bytes);
/* put result into cfg.b[] */
skein_1024_final_pad(ctx, cfg.b);
/* copy over into ctx->X[] */
@ -565,18 +567,18 @@ int skein_1024_init_ext(struct skein1024_ctx *ctx, size_t hashBitLen,
* precomputed for each key)
*/
/* output hash bit count */
ctx->h.hashBitLen = hashBitLen;
ctx->h.hash_bit_len = hash_bit_len;
Skein_Start_New_Type(ctx, CFG_FINAL);
/* pre-pad cfg.w[] with zeroes */
memset(&cfg.w, 0, sizeof(cfg.w));
cfg.w[0] = Skein_Swap64(SKEIN_SCHEMA_VER);
/* hash result length in bits */
cfg.w[1] = Skein_Swap64(hashBitLen);
cfg.w[1] = Skein_Swap64(hash_bit_len);
/* tree hash config info (or SKEIN_CFG_TREE_INFO_SEQUENTIAL) */
cfg.w[2] = Skein_Swap64(treeInfo);
cfg.w[2] = Skein_Swap64(tree_info);
Skein_Show_Key(1024, &ctx->h, key, keyBytes);
Skein_Show_Key(1024, &ctx->h, key, key_bytes);
/* compute the initial chaining values from config block */
skein_1024_process_block(ctx, cfg.b, 1, SKEIN_CFG_STR_LEN);
@ -591,52 +593,53 @@ int skein_1024_init_ext(struct skein1024_ctx *ctx, size_t hashBitLen,
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* process the input bytes */
int skein_1024_update(struct skein1024_ctx *ctx, const u8 *msg,
size_t msgByteCnt)
size_t msg_byte_cnt)
{
size_t n;
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
/* process full blocks, if any */
if (msgByteCnt + ctx->h.bCnt > SKEIN1024_BLOCK_BYTES) {
if (msg_byte_cnt + ctx->h.b_cnt > SKEIN1024_BLOCK_BYTES) {
/* finish up any buffered message data */
if (ctx->h.bCnt) {
if (ctx->h.b_cnt) {
/* # bytes free in buffer b[] */
n = SKEIN1024_BLOCK_BYTES - ctx->h.bCnt;
n = SKEIN1024_BLOCK_BYTES - ctx->h.b_cnt;
if (n) {
/* check on our logic here */
Skein_assert(n < msgByteCnt);
memcpy(&ctx->b[ctx->h.bCnt], msg, n);
msgByteCnt -= n;
Skein_assert(n < msg_byte_cnt);
memcpy(&ctx->b[ctx->h.b_cnt], msg, n);
msg_byte_cnt -= n;
msg += n;
ctx->h.bCnt += n;
ctx->h.b_cnt += n;
}
Skein_assert(ctx->h.bCnt == SKEIN1024_BLOCK_BYTES);
Skein_assert(ctx->h.b_cnt == SKEIN1024_BLOCK_BYTES);
skein_1024_process_block(ctx, ctx->b, 1,
SKEIN1024_BLOCK_BYTES);
ctx->h.bCnt = 0;
ctx->h.b_cnt = 0;
}
/*
* now process any remaining full blocks, directly from input
* message data
*/
if (msgByteCnt > SKEIN1024_BLOCK_BYTES) {
if (msg_byte_cnt > SKEIN1024_BLOCK_BYTES) {
/* number of full blocks to process */
n = (msgByteCnt-1) / SKEIN1024_BLOCK_BYTES;
n = (msg_byte_cnt-1) / SKEIN1024_BLOCK_BYTES;
skein_1024_process_block(ctx, msg, n,
SKEIN1024_BLOCK_BYTES);
msgByteCnt -= n * SKEIN1024_BLOCK_BYTES;
msg_byte_cnt -= n * SKEIN1024_BLOCK_BYTES;
msg += n * SKEIN1024_BLOCK_BYTES;
}
Skein_assert(ctx->h.bCnt == 0);
Skein_assert(ctx->h.b_cnt == 0);
}
/* copy any remaining source message data bytes into b[] */
if (msgByteCnt) {
Skein_assert(msgByteCnt + ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.bCnt], msg, msgByteCnt);
ctx->h.bCnt += msgByteCnt;
if (msg_byte_cnt) {
Skein_assert(msg_byte_cnt + ctx->h.b_cnt <=
SKEIN1024_BLOCK_BYTES);
memcpy(&ctx->b[ctx->h.b_cnt], msg, msg_byte_cnt);
ctx->h.b_cnt += msg_byte_cnt;
}
return SKEIN_SUCCESS;
@ -644,47 +647,47 @@ int skein_1024_update(struct skein1024_ctx *ctx, const u8 *msg,
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* finalize the hash computation and output the result */
int skein_1024_final(struct skein1024_ctx *ctx, u8 *hashVal)
int skein_1024_final(struct skein1024_ctx *ctx, u8 *hash_val)
{
size_t i, n, byteCnt;
size_t i, n, byte_cnt;
u64 X[SKEIN1024_STATE_WORDS];
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.bCnt < SKEIN1024_BLOCK_BYTES)
memset(&ctx->b[ctx->h.bCnt], 0,
SKEIN1024_BLOCK_BYTES - ctx->h.bCnt);
if (ctx->h.b_cnt < SKEIN1024_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
SKEIN1024_BLOCK_BYTES - ctx->h.b_cnt);
/* process the final block */
skein_1024_process_block(ctx, ctx->b, 1, ctx->h.bCnt);
skein_1024_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* now output the result */
/* total number of output bytes */
byteCnt = (ctx->h.hashBitLen + 7) >> 3;
byte_cnt = (ctx->h.hash_bit_len + 7) >> 3;
/* run Threefish in "counter mode" to generate output */
/* zero out b[], so it can hold the counter */
memset(ctx->b, 0, sizeof(ctx->b));
/* keep a local copy of counter mode "key" */
memcpy(X, ctx->X, sizeof(X));
for (i = 0; i*SKEIN1024_BLOCK_BYTES < byteCnt; i++) {
for (i = 0; i*SKEIN1024_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* run "counter mode" */
skein_1024_process_block(ctx, ctx->b, 1, sizeof(u64));
/* number of output bytes left to go */
n = byteCnt - i*SKEIN1024_BLOCK_BYTES;
n = byte_cnt - i*SKEIN1024_BLOCK_BYTES;
if (n >= SKEIN1024_BLOCK_BYTES)
n = SKEIN1024_BLOCK_BYTES;
/* "output" the ctr mode bytes */
Skein_Put64_LSB_First(hashVal+i*SKEIN1024_BLOCK_BYTES, ctx->X,
Skein_Put64_LSB_First(hash_val+i*SKEIN1024_BLOCK_BYTES, ctx->X,
n);
Skein_Show_Final(1024, &ctx->h, n,
hashVal+i*SKEIN1024_BLOCK_BYTES);
hash_val+i*SKEIN1024_BLOCK_BYTES);
/* restore the counter mode key for next time */
memcpy(ctx->X, X, sizeof(X));
}
@ -696,66 +699,66 @@ int skein_1024_final(struct skein1024_ctx *ctx, u8 *hashVal)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* finalize the hash computation and output the block, no OUTPUT stage */
int skein_256_final_pad(struct skein_256_ctx *ctx, u8 *hashVal)
int skein_256_final_pad(struct skein_256_ctx *ctx, u8 *hash_val)
{
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.bCnt < SKEIN_256_BLOCK_BYTES)
memset(&ctx->b[ctx->h.bCnt], 0,
SKEIN_256_BLOCK_BYTES - ctx->h.bCnt);
if (ctx->h.b_cnt < SKEIN_256_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
SKEIN_256_BLOCK_BYTES - ctx->h.b_cnt);
/* process the final block */
skein_256_process_block(ctx, ctx->b, 1, ctx->h.bCnt);
skein_256_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* "output" the state bytes */
Skein_Put64_LSB_First(hashVal, ctx->X, SKEIN_256_BLOCK_BYTES);
Skein_Put64_LSB_First(hash_val, ctx->X, SKEIN_256_BLOCK_BYTES);
return SKEIN_SUCCESS;
}
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* finalize the hash computation and output the block, no OUTPUT stage */
int skein_512_final_pad(struct skein_512_ctx *ctx, u8 *hashVal)
int skein_512_final_pad(struct skein_512_ctx *ctx, u8 *hash_val)
{
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.bCnt < SKEIN_512_BLOCK_BYTES)
memset(&ctx->b[ctx->h.bCnt], 0,
SKEIN_512_BLOCK_BYTES - ctx->h.bCnt);
if (ctx->h.b_cnt < SKEIN_512_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
SKEIN_512_BLOCK_BYTES - ctx->h.b_cnt);
/* process the final block */
skein_512_process_block(ctx, ctx->b, 1, ctx->h.bCnt);
skein_512_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* "output" the state bytes */
Skein_Put64_LSB_First(hashVal, ctx->X, SKEIN_512_BLOCK_BYTES);
Skein_Put64_LSB_First(hash_val, ctx->X, SKEIN_512_BLOCK_BYTES);
return SKEIN_SUCCESS;
}
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* finalize the hash computation and output the block, no OUTPUT stage */
int skein_1024_final_pad(struct skein1024_ctx *ctx, u8 *hashVal)
int skein_1024_final_pad(struct skein1024_ctx *ctx, u8 *hash_val)
{
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
/* tag as the final block */
ctx->h.T[1] |= SKEIN_T1_FLAG_FINAL;
/* zero pad b[] if necessary */
if (ctx->h.bCnt < SKEIN1024_BLOCK_BYTES)
memset(&ctx->b[ctx->h.bCnt], 0,
SKEIN1024_BLOCK_BYTES - ctx->h.bCnt);
if (ctx->h.b_cnt < SKEIN1024_BLOCK_BYTES)
memset(&ctx->b[ctx->h.b_cnt], 0,
SKEIN1024_BLOCK_BYTES - ctx->h.b_cnt);
/* process the final block */
skein_1024_process_block(ctx, ctx->b, 1, ctx->h.bCnt);
skein_1024_process_block(ctx, ctx->b, 1, ctx->h.b_cnt);
/* "output" the state bytes */
Skein_Put64_LSB_First(hashVal, ctx->X, SKEIN1024_BLOCK_BYTES);
Skein_Put64_LSB_First(hash_val, ctx->X, SKEIN1024_BLOCK_BYTES);
return SKEIN_SUCCESS;
}
@ -763,37 +766,37 @@ int skein_1024_final_pad(struct skein1024_ctx *ctx, u8 *hashVal)
#if SKEIN_TREE_HASH
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* just do the OUTPUT stage */
int skein_256_output(struct skein_256_ctx *ctx, u8 *hashVal)
int skein_256_output(struct skein_256_ctx *ctx, u8 *hash_val)
{
size_t i, n, byteCnt;
size_t i, n, byte_cnt;
u64 X[SKEIN_256_STATE_WORDS];
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_256_BLOCK_BYTES, SKEIN_FAIL);
/* now output the result */
/* total number of output bytes */
byteCnt = (ctx->h.hashBitLen + 7) >> 3;
byte_cnt = (ctx->h.hash_bit_len + 7) >> 3;
/* run Threefish in "counter mode" to generate output */
/* zero out b[], so it can hold the counter */
memset(ctx->b, 0, sizeof(ctx->b));
/* keep a local copy of counter mode "key" */
memcpy(X, ctx->X, sizeof(X));
for (i = 0; i*SKEIN_256_BLOCK_BYTES < byteCnt; i++) {
for (i = 0; i*SKEIN_256_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* run "counter mode" */
skein_256_process_block(ctx, ctx->b, 1, sizeof(u64));
/* number of output bytes left to go */
n = byteCnt - i*SKEIN_256_BLOCK_BYTES;
n = byte_cnt - i*SKEIN_256_BLOCK_BYTES;
if (n >= SKEIN_256_BLOCK_BYTES)
n = SKEIN_256_BLOCK_BYTES;
/* "output" the ctr mode bytes */
Skein_Put64_LSB_First(hashVal+i*SKEIN_256_BLOCK_BYTES, ctx->X,
Skein_Put64_LSB_First(hash_val+i*SKEIN_256_BLOCK_BYTES, ctx->X,
n);
Skein_Show_Final(256, &ctx->h, n,
hashVal+i*SKEIN_256_BLOCK_BYTES);
hash_val+i*SKEIN_256_BLOCK_BYTES);
/* restore the counter mode key for next time */
memcpy(ctx->X, X, sizeof(X));
}
@ -802,37 +805,37 @@ int skein_256_output(struct skein_256_ctx *ctx, u8 *hashVal)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* just do the OUTPUT stage */
int skein_512_output(struct skein_512_ctx *ctx, u8 *hashVal)
int skein_512_output(struct skein_512_ctx *ctx, u8 *hash_val)
{
size_t i, n, byteCnt;
size_t i, n, byte_cnt;
u64 X[SKEIN_512_STATE_WORDS];
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN_512_BLOCK_BYTES, SKEIN_FAIL);
/* now output the result */
/* total number of output bytes */
byteCnt = (ctx->h.hashBitLen + 7) >> 3;
byte_cnt = (ctx->h.hash_bit_len + 7) >> 3;
/* run Threefish in "counter mode" to generate output */
/* zero out b[], so it can hold the counter */
memset(ctx->b, 0, sizeof(ctx->b));
/* keep a local copy of counter mode "key" */
memcpy(X, ctx->X, sizeof(X));
for (i = 0; i*SKEIN_512_BLOCK_BYTES < byteCnt; i++) {
for (i = 0; i*SKEIN_512_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* run "counter mode" */
skein_512_process_block(ctx, ctx->b, 1, sizeof(u64));
/* number of output bytes left to go */
n = byteCnt - i*SKEIN_512_BLOCK_BYTES;
n = byte_cnt - i*SKEIN_512_BLOCK_BYTES;
if (n >= SKEIN_512_BLOCK_BYTES)
n = SKEIN_512_BLOCK_BYTES;
/* "output" the ctr mode bytes */
Skein_Put64_LSB_First(hashVal+i*SKEIN_512_BLOCK_BYTES, ctx->X,
Skein_Put64_LSB_First(hash_val+i*SKEIN_512_BLOCK_BYTES, ctx->X,
n);
Skein_Show_Final(256, &ctx->h, n,
hashVal+i*SKEIN_512_BLOCK_BYTES);
hash_val+i*SKEIN_512_BLOCK_BYTES);
/* restore the counter mode key for next time */
memcpy(ctx->X, X, sizeof(X));
}
@ -841,37 +844,37 @@ int skein_512_output(struct skein_512_ctx *ctx, u8 *hashVal)
/*++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++*/
/* just do the OUTPUT stage */
int skein_1024_output(struct skein1024_ctx *ctx, u8 *hashVal)
int skein_1024_output(struct skein1024_ctx *ctx, u8 *hash_val)
{
size_t i, n, byteCnt;
size_t i, n, byte_cnt;
u64 X[SKEIN1024_STATE_WORDS];
/* catch uninitialized context */
Skein_Assert(ctx->h.bCnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
Skein_Assert(ctx->h.b_cnt <= SKEIN1024_BLOCK_BYTES, SKEIN_FAIL);
/* now output the result */
/* total number of output bytes */
byteCnt = (ctx->h.hashBitLen + 7) >> 3;
byte_cnt = (ctx->h.hash_bit_len + 7) >> 3;
/* run Threefish in "counter mode" to generate output */
/* zero out b[], so it can hold the counter */
memset(ctx->b, 0, sizeof(ctx->b));
/* keep a local copy of counter mode "key" */
memcpy(X, ctx->X, sizeof(X));
for (i = 0; i*SKEIN1024_BLOCK_BYTES < byteCnt; i++) {
for (i = 0; i*SKEIN1024_BLOCK_BYTES < byte_cnt; i++) {
/* build the counter block */
((u64 *)ctx->b)[0] = Skein_Swap64((u64) i);
Skein_Start_New_Type(ctx, OUT_FINAL);
/* run "counter mode" */
skein_1024_process_block(ctx, ctx->b, 1, sizeof(u64));
/* number of output bytes left to go */
n = byteCnt - i*SKEIN1024_BLOCK_BYTES;
n = byte_cnt - i*SKEIN1024_BLOCK_BYTES;
if (n >= SKEIN1024_BLOCK_BYTES)
n = SKEIN1024_BLOCK_BYTES;
/* "output" the ctr mode bytes */
Skein_Put64_LSB_First(hashVal+i*SKEIN1024_BLOCK_BYTES, ctx->X,
Skein_Put64_LSB_First(hash_val+i*SKEIN1024_BLOCK_BYTES, ctx->X,
n);
Skein_Show_Final(256, &ctx->h, n,
hashVal+i*SKEIN1024_BLOCK_BYTES);
hash_val+i*SKEIN1024_BLOCK_BYTES);
/* restore the counter mode key for next time */
memcpy(ctx->X, X, sizeof(X));
}

102
drivers/staging/skein/skeinApi.c
View File

@ -32,17 +32,17 @@ int skein_ctx_prepare(struct skein_ctx *ctx, enum skein_size size)
Skein_Assert(ctx && size, SKEIN_FAIL);
memset(ctx , 0, sizeof(struct skein_ctx));
ctx->skeinSize = size;
ctx->skein_size = size;
return SKEIN_SUCCESS;
}
int skein_init(struct skein_ctx *ctx, size_t hashBitLen)
int skein_init(struct skein_ctx *ctx, size_t hash_bit_len)
{
int ret = SKEIN_FAIL;
size_t Xlen = 0;
size_t X_len = 0;
u64 *X = NULL;
u64 treeInfo = SKEIN_CFG_TREE_INFO_SEQUENTIAL;
u64 tree_info = SKEIN_CFG_TREE_INFO_SEQUENTIAL;
Skein_Assert(ctx, SKEIN_FAIL);
/*
@ -51,83 +51,83 @@ int skein_init(struct skein_ctx *ctx, size_t hashBitLen)
* memory available. The beauty of C :-) .
*/
X = ctx->m.s256.X;
Xlen = ctx->skeinSize/8;
X_len = ctx->skein_size/8;
/*
* If size is the same and hash bit length is zero then reuse
* the save chaining variables.
*/
switch (ctx->skeinSize) {
switch (ctx->skein_size) {
case Skein256:
ret = skein_256_init_ext(&ctx->m.s256, hashBitLen,
treeInfo, NULL, 0);
ret = skein_256_init_ext(&ctx->m.s256, hash_bit_len,
tree_info, NULL, 0);
break;
case Skein512:
ret = skein_512_init_ext(&ctx->m.s512, hashBitLen,
treeInfo, NULL, 0);
ret = skein_512_init_ext(&ctx->m.s512, hash_bit_len,
tree_info, NULL, 0);
break;
case Skein1024:
ret = skein_1024_init_ext(&ctx->m.s1024, hashBitLen,
treeInfo, NULL, 0);
ret = skein_1024_init_ext(&ctx->m.s1024, hash_bit_len,
tree_info, NULL, 0);
break;
}
if (ret == SKEIN_SUCCESS) {
/*
* Save chaining variables for this combination of size and
* hashBitLen
* hash_bit_len
*/
memcpy(ctx->XSave, X, Xlen);
memcpy(ctx->X_save, X, X_len);
}
return ret;
}
int skein_mac_init(struct skein_ctx *ctx, const u8 *key, size_t keyLen,
size_t hashBitLen)
int skein_mac_init(struct skein_ctx *ctx, const u8 *key, size_t key_len,
size_t hash_bit_len)
{
int ret = SKEIN_FAIL;
u64 *X = NULL;
size_t Xlen = 0;
u64 treeInfo = SKEIN_CFG_TREE_INFO_SEQUENTIAL;
size_t X_len = 0;
u64 tree_info = SKEIN_CFG_TREE_INFO_SEQUENTIAL;
Skein_Assert(ctx, SKEIN_FAIL);
X = ctx->m.s256.X;
Xlen = ctx->skeinSize/8;
X_len = ctx->skein_size/8;
Skein_Assert(hashBitLen, SKEIN_BAD_HASHLEN);
Skein_Assert(hash_bit_len, SKEIN_BAD_HASHLEN);
switch (ctx->skeinSize) {
switch (ctx->skein_size) {
case Skein256:
ret = skein_256_init_ext(&ctx->m.s256, hashBitLen,
treeInfo,
(const u8 *)key, keyLen);
ret = skein_256_init_ext(&ctx->m.s256, hash_bit_len,
tree_info,
(const u8 *)key, key_len);
break;
case Skein512:
ret = skein_512_init_ext(&ctx->m.s512, hashBitLen,
treeInfo,
(const u8 *)key, keyLen);
ret = skein_512_init_ext(&ctx->m.s512, hash_bit_len,
tree_info,
(const u8 *)key, key_len);
break;
case Skein1024:
ret = skein_1024_init_ext(&ctx->m.s1024, hashBitLen,
treeInfo,
(const u8 *)key, keyLen);
ret = skein_1024_init_ext(&ctx->m.s1024, hash_bit_len,
tree_info,
(const u8 *)key, key_len);
break;
}
if (ret == SKEIN_SUCCESS) {
/*
* Save chaining variables for this combination of key,
* keyLen, hashBitLen
* key_len, hash_bit_len
*/
memcpy(ctx->XSave, X, Xlen);
memcpy(ctx->X_save, X, X_len);
}
return ret;
}
void skein_reset(struct skein_ctx *ctx)
{
size_t Xlen = 0;
size_t X_len = 0;
u64 *X = NULL;
/*
@ -136,32 +136,33 @@ void skein_reset(struct skein_ctx *ctx)
* memory available. The beautiy of C :-) .
*/
X = ctx->m.s256.X;
Xlen = ctx->skeinSize/8;
X_len = ctx->skein_size/8;
/* Restore the chaing variable, reset byte counter */
memcpy(X, ctx->XSave, Xlen);
memcpy(X, ctx->X_save, X_len);
/* Setup context to process the message */
Skein_Start_New_Type(&ctx->m, MSG);
}
int skein_update(struct skein_ctx *ctx, const u8 *msg,
size_t msgByteCnt)
size_t msg_byte_cnt)
{
int ret = SKEIN_FAIL;
Skein_Assert(ctx, SKEIN_FAIL);
switch (ctx->skeinSize) {
switch (ctx->skein_size) {
case Skein256:
ret = skein_256_update(&ctx->m.s256, (const u8 *)msg,
msgByteCnt);
msg_byte_cnt);
break;
case Skein512:
ret = skein_512_update(&ctx->m.s512, (const u8 *)msg,
msgByteCnt);
msg_byte_cnt);
break;
case Skein1024:
ret = skein_1024_update(&ctx->m.s1024, (const u8 *)msg,
msgByteCnt);
msg_byte_cnt);
break;
}
return ret;
@ -169,7 +170,7 @@ int skein_update(struct skein_ctx *ctx, const u8 *msg,
}
int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
size_t msgBitCnt)
size_t msg_bit_cnt)
{
/*
* I've used the bit pad implementation from skein_test.c (see NIST CD)
@ -185,13 +186,13 @@ int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
* assert an error
*/
Skein_Assert((ctx->m.h.T[1] & SKEIN_T1_FLAG_BIT_PAD) == 0 ||
msgBitCnt == 0, SKEIN_FAIL);
msg_bit_cnt == 0, SKEIN_FAIL);
/* if number of bits is a multiple of bytes - that's easy */
if ((msgBitCnt & 0x7) == 0)
return skein_update(ctx, msg, msgBitCnt >> 3);
if ((msg_bit_cnt & 0x7) == 0)
return skein_update(ctx, msg, msg_bit_cnt >> 3);
skein_update(ctx, msg, (msgBitCnt >> 3) + 1);
skein_update(ctx, msg, (msg_bit_cnt >> 3) + 1);
/*
* The next line rely on the fact that the real Skein contexts
@ -199,18 +200,18 @@ int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
* Skein's real partial block buffer.
* If this layout ever changes we have to adapt this as well.
*/
up = (u8 *)ctx->m.s256.X + ctx->skeinSize / 8;
up = (u8 *)ctx->m.s256.X + ctx->skein_size / 8;
/* set tweak flag for the skein_final call */
Skein_Set_Bit_Pad_Flag(ctx->m.h);
/* now "pad" the final partial byte the way NIST likes */
/* get the bCnt value (same location for all block sizes) */
length = ctx->m.h.bCnt;
/* get the b_cnt value (same location for all block sizes) */
length = ctx->m.h.b_cnt;
/* internal sanity check: there IS a partial byte in the buffer! */
Skein_assert(length != 0);
/* partial byte bit mask */
mask = (u8) (1u << (7 - (msgBitCnt & 7)));
mask = (u8) (1u << (7 - (msg_bit_cnt & 7)));
/* apply bit padding on final byte (in the buffer) */
up[length-1] = (u8)((up[length-1] & (0-mask))|mask);
@ -220,9 +221,10 @@ int skein_update_bits(struct skein_ctx *ctx, const u8 *msg,
int skein_final(struct skein_ctx *ctx, u8 *hash)
{
int ret = SKEIN_FAIL;
Skein_Assert(ctx, SKEIN_FAIL);
switch (ctx->skeinSize) {
switch (ctx->skein_size) {
case Skein256:
ret = skein_256_final(&ctx->m.s256, (u8 *)hash);
break;

42
drivers/staging/skein/skeinBlockNo3F.c
View File

@ -5,8 +5,8 @@
/***************************** Skein_256 ******************************/
void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd)
void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add)
{
struct threefish_key key;
u64 tweak[2];
@ -14,12 +14,12 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
u64 w[SKEIN_256_STATE_WORDS]; /* local copy of input block */
u64 words[3];
Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */
Skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
tweak[0] = ctx->h.T[0];
tweak[1] = ctx->h.T[1];
do {
u64 carry = byteCntAdd;
u64 carry = byte_cnt_add;
words[0] = tweak[0] & 0xffffffffL;
words[1] = ((tweak[0] >> 32) & 0xffffffffL);
@ -37,11 +37,11 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
threefish_set_key(&key, Threefish256, ctx->X, tweak);
/* get input block in little-endian format */
Skein_Get64_LSB_First(w, blkPtr, SKEIN_256_STATE_WORDS);
Skein_Get64_LSB_First(w, blk_ptr, SKEIN_256_STATE_WORDS);
threefish_encrypt_block_words(&key, w, ctx->X);
blkPtr += SKEIN_256_BLOCK_BYTES;
blk_ptr += SKEIN_256_BLOCK_BYTES;
/* do the final "feedforward" xor, update ctx chaining vars */
ctx->X[0] = ctx->X[0] ^ w[0];
@ -50,14 +50,14 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
ctx->X[3] = ctx->X[3] ^ w[3];
tweak[1] &= ~SKEIN_T1_FLAG_FIRST;
} while (--blkCnt);
} while (--blk_cnt);
ctx->h.T[0] = tweak[0];
ctx->h.T[1] = tweak[1];
}
void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd)
void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add)
{
struct threefish_key key;
u64 tweak[2];
@ -65,12 +65,12 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
u64 words[3];
u64 w[SKEIN_512_STATE_WORDS]; /* local copy of input block */
Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */
Skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
tweak[0] = ctx->h.T[0];
tweak[1] = ctx->h.T[1];
do {
u64 carry = byteCntAdd;
u64 carry = byte_cnt_add;
words[0] = tweak[0] & 0xffffffffL;
words[1] = ((tweak[0] >> 32) & 0xffffffffL);
@ -88,11 +88,11 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
threefish_set_key(&key, Threefish512, ctx->X, tweak);
/* get input block in little-endian format */
Skein_Get64_LSB_First(w, blkPtr, SKEIN_512_STATE_WORDS);
Skein_Get64_LSB_First(w, blk_ptr, SKEIN_512_STATE_WORDS);
threefish_encrypt_block_words(&key, w, ctx->X);
blkPtr += SKEIN_512_BLOCK_BYTES;
blk_ptr += SKEIN_512_BLOCK_BYTES;
/* do the final "feedforward" xor, update ctx chaining vars */
ctx->X[0] = ctx->X[0] ^ w[0];
@ -105,14 +105,14 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
ctx->X[7] = ctx->X[7] ^ w[7];
tweak[1] &= ~SKEIN_T1_FLAG_FIRST;
} while (--blkCnt);
} while (--blk_cnt);
ctx->h.T[0] = tweak[0];
ctx->h.T[1] = tweak[1];
}
void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd)
void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add)
{
struct threefish_key key;
u64 tweak[2];
@ -120,12 +120,12 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
u64 words[3];
u64 w[SKEIN1024_STATE_WORDS]; /* local copy of input block */
Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */
Skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
tweak[0] = ctx->h.T[0];
tweak[1] = ctx->h.T[1];
do {
u64 carry = byteCntAdd;
u64 carry = byte_cnt_add;
words[0] = tweak[0] & 0xffffffffL;
words[1] = ((tweak[0] >> 32) & 0xffffffffL);
@ -143,11 +143,11 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
threefish_set_key(&key, Threefish1024, ctx->X, tweak);
/* get input block in little-endian format */
Skein_Get64_LSB_First(w, blkPtr, SKEIN1024_STATE_WORDS);
Skein_Get64_LSB_First(w, blk_ptr, SKEIN1024_STATE_WORDS);
threefish_encrypt_block_words(&key, w, ctx->X);
blkPtr += SKEIN1024_BLOCK_BYTES;
blk_ptr += SKEIN1024_BLOCK_BYTES;
/* do the final "feedforward" xor, update ctx chaining vars */
ctx->X[0] = ctx->X[0] ^ w[0];
@ -168,7 +168,7 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
ctx->X[15] = ctx->X[15] ^ w[15];
tweak[1] &= ~SKEIN_T1_FLAG_FIRST;
} while (--blkCnt);
} while (--blk_cnt);
ctx->h.T[0] = tweak[0];
ctx->h.T[1] = tweak[1];

125
drivers/staging/skein/skein_block.c
View File

@ -39,8 +39,8 @@
/***************************** Skein_256 ******************************/
#if !(SKEIN_USE_ASM & 256)
void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd)
void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add)
{ /* do it in C */
enum {
WCNT = SKEIN_256_STATE_WORDS
@ -66,10 +66,11 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
u64 X0, X1, X2, X3; /* local copy of context vars, for speed */
u64 w[WCNT]; /* local copy of input block */
#ifdef SKEIN_DEBUG
const u64 *Xptr[4]; /* use for debugging (help cc put Xn in regs) */
Xptr[0] = &X0; Xptr[1] = &X1; Xptr[2] = &X2; Xptr[3] = &X3;
const u64 *X_ptr[4]; /* use for debugging (help cc put Xn in regs) */
X_ptr[0] = &X0; X_ptr[1] = &X1; X_ptr[2] = &X2; X_ptr[3] = &X3;
#endif
Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */
Skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
ts[0] = ctx->h.T[0];
ts[1] = ctx->h.T[1];
do {
@ -77,7 +78,7 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
* this implementation only supports 2**64 input bytes
* (no carry out here)
*/
ts[0] += byteCntAdd; /* update processed length */
ts[0] += byte_cnt_add; /* update processed length */
/* precompute the key schedule for this block */
ks[0] = ctx->X[0];
@ -89,9 +90,9 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
ts[2] = ts[0] ^ ts[1];
/* get input block in little-endian format */
Skein_Get64_LSB_First(w, blkPtr, WCNT);
Skein_Get64_LSB_First(w, blk_ptr, WCNT);
DebugSaveTweak(ctx);
Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blkPtr, w, ks, ts);
Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blk_ptr, w, ks, ts);
X0 = w[0] + ks[0]; /* do the first full key injection */
X1 = w[1] + ks[1] + ts[0];
@ -100,23 +101,23 @@ void skein_256_process_block(struct skein_256_ctx *ctx, const u8 *blkPtr,
/* show starting state values */
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL,
Xptr);
X_ptr);
blkPtr += SKEIN_256_BLOCK_BYTES;
blk_ptr += SKEIN_256_BLOCK_BYTES;
/* run the rounds */
#define Round256(p0, p1, p2, p3, ROT, rNum) \
#define Round256(p0, p1, p2, p3, ROT, r_num) \
do { \
X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \
X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \
} while (0)
#if SKEIN_UNROLL_256 == 0
#define R256(p0, p1, p2, p3, ROT, rNum) /* fully unrolled */ \
#define R256(p0, p1, p2, p3, ROT, r_num) /* fully unrolled */ \
do { \
Round256(p0, p1, p2, p3, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr); \
Round256(p0, p1, p2, p3, ROT, r_num); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, r_num, X_ptr); \
} while (0)
#define I256(R) \
@ -126,13 +127,13 @@ do { \
X1 += ks[((R)+2) % 5] + ts[((R)+1) % 3]; \
X2 += ks[((R)+3) % 5] + ts[((R)+2) % 3]; \
X3 += ks[((R)+4) % 5] + (R)+1; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \
} while (0)
#else /* looping version */
#define R256(p0, p1, p2, p3, ROT, rNum) \
#define R256(p0, p1, p2, p3, ROT, r_num) \
do { \
Round256(p0, p1, p2, p3, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr); \
Round256(p0, p1, p2, p3, ROT, r_num); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + r_num, X_ptr); \
} while (0)
#define I256(R) \
@ -145,7 +146,7 @@ do { \
/* rotate key schedule */ \
ks[r + (R) + 4] = ks[r + (R) - 1]; \
ts[r + (R) + 2] = ts[r + (R) - 1]; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \
} while (0)
for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_256)
@ -227,7 +228,7 @@ do { \
Skein_Show_Round(BLK_BITS, &ctx->h, SKEIN_RND_FEED_FWD, ctx->X);
ts[1] &= ~SKEIN_T1_FLAG_FIRST;
} while (--blkCnt);
} while (--blk_cnt);
ctx->h.T[0] = ts[0];
ctx->h.T[1] = ts[1];
}
@ -247,8 +248,8 @@ unsigned int skein_256_unroll_cnt(void)
/***************************** Skein_512 ******************************/
#if !(SKEIN_USE_ASM & 512)
void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd)
void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add)
{ /* do it in C */
enum {
WCNT = SKEIN_512_STATE_WORDS
@ -274,12 +275,13 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
u64 X0, X1, X2, X3, X4, X5, X6, X7; /* local copies, for speed */
u64 w[WCNT]; /* local copy of input block */
#ifdef SKEIN_DEBUG
const u64 *Xptr[8]; /* use for debugging (help cc put Xn in regs) */
Xptr[0] = &X0; Xptr[1] = &X1; Xptr[2] = &X2; Xptr[3] = &X3;
Xptr[4] = &X4; Xptr[5] = &X5; Xptr[6] = &X6; Xptr[7] = &X7;
const u64 *X_ptr[8]; /* use for debugging (help cc put Xn in regs) */
X_ptr[0] = &X0; X_ptr[1] = &X1; X_ptr[2] = &X2; X_ptr[3] = &X3;
X_ptr[4] = &X4; X_ptr[5] = &X5; X_ptr[6] = &X6; X_ptr[7] = &X7;
#endif
Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */
Skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
ts[0] = ctx->h.T[0];
ts[1] = ctx->h.T[1];
do {
@ -287,7 +289,7 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
* this implementation only supports 2**64 input bytes
* (no carry out here)
*/
ts[0] += byteCntAdd; /* update processed length */
ts[0] += byte_cnt_add; /* update processed length */
/* precompute the key schedule for this block */
ks[0] = ctx->X[0];
@ -304,9 +306,9 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
ts[2] = ts[0] ^ ts[1];
/* get input block in little-endian format */
Skein_Get64_LSB_First(w, blkPtr, WCNT);
Skein_Get64_LSB_First(w, blk_ptr, WCNT);
DebugSaveTweak(ctx);
Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blkPtr, w, ks, ts);
Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blk_ptr, w, ks, ts);
X0 = w[0] + ks[0]; /* do the first full key injection */
X1 = w[1] + ks[1];
@ -317,12 +319,12 @@ void skein_512_process_block(struct skein_512_ctx *ctx, const u8 *blkPtr,
X6 = w[6] + ks[6] + ts[1];
X7 = w[7] + ks[7];
blkPtr += SKEIN_512_BLOCK_BYTES;
blk_ptr += SKEIN_512_BLOCK_BYTES;
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL,
Xptr);
X_ptr);
/* run the rounds */
#define Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
#define Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \
do { \
X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \
X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \
@ -331,10 +333,10 @@ do { \
} while (0)
#if SKEIN_UNROLL_512 == 0
#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) /* unrolled */ \
#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) /* unrolled */ \
do { \
Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rNum, Xptr); \
Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, r_num, X_ptr); \
} while (0)
#define I512(R) \
@ -348,13 +350,13 @@ do { \
X5 += ks[((R) + 6) % 9] + ts[((R) + 1) % 3]; \
X6 += ks[((R) + 7) % 9] + ts[((R) + 2) % 3]; \
X7 += ks[((R) + 8) % 9] + (R) + 1; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \
} while (0)
#else /* looping version */
#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
#define R512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num) \
do { \
Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, rNum) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rNum, Xptr); \
Round512(p0, p1, p2, p3, p4, p5, p6, p7, ROT, r_num); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + r_num, X_ptr); \
} while (0)
#define I512(R) \
@ -371,7 +373,7 @@ do { \
/* rotate key schedule */ \
ks[r + (R) + 8] = ks[r + (R) - 1]; \
ts[r + (R) + 2] = ts[r + (R) - 1]; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \
} while (0)
for (r = 1; r < 2 * RCNT; r += 2 * SKEIN_UNROLL_512)
@ -457,7 +459,7 @@ do { \
Skein_Show_Round(BLK_BITS, &ctx->h, SKEIN_RND_FEED_FWD, ctx->X);
ts[1] &= ~SKEIN_T1_FLAG_FIRST;
} while (--blkCnt);
} while (--blk_cnt);
ctx->h.T[0] = ts[0];
ctx->h.T[1] = ts[1];
}
@ -477,8 +479,8 @@ unsigned int skein_512_unroll_cnt(void)
/***************************** Skein1024 ******************************/
#if !(SKEIN_USE_ASM & 1024)
void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
size_t blkCnt, size_t byteCntAdd)
void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blk_ptr,
size_t blk_cnt, size_t byte_cnt_add)
{ /* do it in C, always looping (unrolled is bigger AND slower!) */
enum {
WCNT = SKEIN1024_STATE_WORDS
@ -507,14 +509,17 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
X08, X09, X10, X11, X12, X13, X14, X15;
u64 w[WCNT]; /* local copy of input block */
#ifdef SKEIN_DEBUG
const u64 *Xptr[16]; /* use for debugging (help cc put Xn in regs) */
Xptr[0] = &X00; Xptr[1] = &X01; Xptr[2] = &X02; Xptr[3] = &X03;
Xptr[4] = &X04; Xptr[5] = &X05; Xptr[6] = &X06; Xptr[7] = &X07;
Xptr[8] = &X08; Xptr[9] = &X09; Xptr[10] = &X10; Xptr[11] = &X11;
Xptr[12] = &X12; Xptr[13] = &X13; Xptr[14] = &X14; Xptr[15] = &X15;
const u64 *X_ptr[16]; /* use for debugging (help cc put Xn in regs) */
X_ptr[0] = &X00; X_ptr[1] = &X01; X_ptr[2] = &X02;
X_ptr[3] = &X03; X_ptr[4] = &X04; X_ptr[5] = &X05;
X_ptr[6] = &X06; X_ptr[7] = &X07; X_ptr[8] = &X08;
X_ptr[9] = &X09; X_ptr[10] = &X10; X_ptr[11] = &X11;
X_ptr[12] = &X12; X_ptr[13] = &X13; X_ptr[14] = &X14;
X_ptr[15] = &X15;
#endif
Skein_assert(blkCnt != 0); /* never call with blkCnt == 0! */
Skein_assert(blk_cnt != 0); /* never call with blk_cnt == 0! */
ts[0] = ctx->h.T[0];
ts[1] = ctx->h.T[1];
do {
@ -522,7 +527,7 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
* this implementation only supports 2**64 input bytes
* (no carry out here)
*/
ts[0] += byteCntAdd; /* update processed length */
ts[0] += byte_cnt_add; /* update processed length */
/* precompute the key schedule for this block */
ks[0] = ctx->X[0];
@ -549,9 +554,9 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
ts[2] = ts[0] ^ ts[1];
/* get input block in little-endian format */
Skein_Get64_LSB_First(w, blkPtr, WCNT);
Skein_Get64_LSB_First(w, blk_ptr, WCNT);
DebugSaveTweak(ctx);
Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blkPtr, w, ks, ts);
Skein_Show_Block(BLK_BITS, &ctx->h, ctx->X, blk_ptr, w, ks, ts);
X00 = w[0] + ks[0]; /* do the first full key injection */
X01 = w[1] + ks[1];
@ -571,10 +576,10 @@ void skein_1024_process_block(struct skein1024_ctx *ctx, const u8 *blkPtr,
X15 = w[15] + ks[15];
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INITIAL,
Xptr);
X_ptr);
#define Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
pF, ROT, rNum) \
pF, ROT, r_num) \
do { \
X##p0 += X##p1; X##p1 = RotL_64(X##p1, ROT##_0); X##p1 ^= X##p0; \
X##p2 += X##p3; X##p3 = RotL_64(X##p3, ROT##_1); X##p3 ^= X##p2; \
@ -592,7 +597,7 @@ do { \
do { \
Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
pF, ROT, rn) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rn, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, rn, X_ptr); \
} while (0)
#define I1024(R) \
@ -614,7 +619,7 @@ do { \
X13 += ks[((R) + 14) % 17] + ts[((R) + 1) % 3]; \
X14 += ks[((R) + 15) % 17] + ts[((R) + 2) % 3]; \
X15 += ks[((R) + 16) % 17] + (R) + 1; \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \
} while (0)
#else /* looping version */
#define R1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, pF, \
@ -622,7 +627,7 @@ do { \
do { \
Round1024(p0, p1, p2, p3, p4, p5, p6, p7, p8, p9, pA, pB, pC, pD, pE, \
pF, ROT, rn) \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rn, Xptr); \
Skein_Show_R_Ptr(BLK_BITS, &ctx->h, 4 * (r - 1) + rn, X_ptr); \
} while (0)
#define I1024(R) \
@ -647,7 +652,7 @@ do { \
/* rotate key schedule */ \
ks[r + (R) + 16] = ks[r + (R) - 1]; \
ts[r + (R) + 2] = ts[r + (R) - 1]; \
Skein_Show_R_Ptr(BLK_BITSi, &ctx->h, SKEIN_RND_KEY_INJECT, Xptr); \
Skein_Show_R_Ptr(BLK_BITSi, &ctx->h, SKEIN_RND_KEY_INJECT, X_ptr); \
} while (0)
for (r = 1; r <= 2 * RCNT; r += 2 * SKEIN_UNROLL_1024)
@ -750,8 +755,8 @@ do { \
Skein_Show_Round(BLK_BITS, &ctx->h, SKEIN_RND_FEED_FWD, ctx->X);
ts[1] &= ~SKEIN_T1_FLAG_FIRST;
blkPtr += SKEIN1024_BLOCK_BYTES;
} while (--blkCnt);
blk_ptr += SKEIN1024_BLOCK_BYTES;
} while (--blk_cnt);
ctx->h.T[0] = ts[0];
ctx->h.T[1] = ts[1];
}

76
drivers/staging/skein/threefish1024Block.c
View File

@ -2,28 +2,28 @@
#include <threefishApi.h>
void threefish_encrypt_1024(struct threefish_key *keyCtx, u64 *input,
void threefish_encrypt_1024(struct threefish_key *key_ctx, u64 *input,
u64 *output)
{
u64 b0 = input[0], b1 = input[1],
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7],
b8 = input[8], b9 = input[9],
b10 = input[10], b11 = input[11],
b12 = input[12], b13 = input[13],
b14 = input[14], b15 = input[15];
u64 k0 = keyCtx->key[0], k1 = keyCtx->key[1],
k2 = keyCtx->key[2], k3 = keyCtx->key[3],
k4 = keyCtx->key[4], k5 = keyCtx->key[5],
k6 = keyCtx->key[6], k7 = keyCtx->key[7],
k8 = keyCtx->key[8], k9 = keyCtx->key[9],
k10 = keyCtx->key[10], k11 = keyCtx->key[11],
k12 = keyCtx->key[12], k13 = keyCtx->key[13],
k14 = keyCtx->key[14], k15 = keyCtx->key[15],
k16 = keyCtx->key[16];
u64 t0 = keyCtx->tweak[0], t1 = keyCtx->tweak[1],
t2 = keyCtx->tweak[2];
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7],
b8 = input[8], b9 = input[9],
b10 = input[10], b11 = input[11],
b12 = input[12], b13 = input[13],
b14 = input[14], b15 = input[15];
u64 k0 = key_ctx->key[0], k1 = key_ctx->key[1],
k2 = key_ctx->key[2], k3 = key_ctx->key[3],
k4 = key_ctx->key[4], k5 = key_ctx->key[5],
k6 = key_ctx->key[6], k7 = key_ctx->key[7],
k8 = key_ctx->key[8], k9 = key_ctx->key[9],
k10 = key_ctx->key[10], k11 = key_ctx->key[11],
k12 = key_ctx->key[12], k13 = key_ctx->key[13],
k14 = key_ctx->key[14], k15 = key_ctx->key[15],
k16 = key_ctx->key[16];
u64 t0 = key_ctx->tweak[0], t1 = key_ctx->tweak[1],
t2 = key_ctx->tweak[2];
b1 += k1;
b0 += b1 + k0;
@ -2123,28 +2123,28 @@ void threefish_encrypt_1024(struct threefish_key *keyCtx, u64 *input,
output[15] = b15 + k1 + 20;
}
void threefish_decrypt_1024(struct threefish_key *keyCtx, u64 *input,
void threefish_decrypt_1024(struct threefish_key *key_ctx, u64 *input,
u64 *output)
{
u64 b0 = input[0], b1 = input[1],
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7],
b8 = input[8], b9 = input[9],
b10 = input[10], b11 = input[11],
b12 = input[12], b13 = input[13],
b14 = input[14], b15 = input[15];
u64 k0 = keyCtx->key[0], k1 = keyCtx->key[1],
k2 = keyCtx->key[2], k3 = keyCtx->key[3],
k4 = keyCtx->key[4], k5 = keyCtx->key[5],
k6 = keyCtx->key[6], k7 = keyCtx->key[7],
k8 = keyCtx->key[8], k9 = keyCtx->key[9],
k10 = keyCtx->key[10], k11 = keyCtx->key[11],
k12 = keyCtx->key[12], k13 = keyCtx->key[13],
k14 = keyCtx->key[14], k15 = keyCtx->key[15],
k16 = keyCtx->key[16];
u64 t0 = keyCtx->tweak[0], t1 = keyCtx->tweak[1],
t2 = keyCtx->tweak[2];
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7],
b8 = input[8], b9 = input[9],
b10 = input[10], b11 = input[11],
b12 = input[12], b13 = input[13],
b14 = input[14], b15 = input[15];
u64 k0 = key_ctx->key[0], k1 = key_ctx->key[1],
k2 = key_ctx->key[2], k3 = key_ctx->key[3],
k4 = key_ctx->key[4], k5 = key_ctx->key[5],
k6 = key_ctx->key[6], k7 = key_ctx->key[7],
k8 = key_ctx->key[8], k9 = key_ctx->key[9],
k10 = key_ctx->key[10], k11 = key_ctx->key[11],
k12 = key_ctx->key[12], k13 = key_ctx->key[13],
k14 = key_ctx->key[14], k15 = key_ctx->key[15],
k16 = key_ctx->key[16];
u64 t0 = key_ctx->tweak[0], t1 = key_ctx->tweak[1],
t2 = key_ctx->tweak[2];
u64 tmp;
b0 -= k3;

28
drivers/staging/skein/threefish256Block.c
View File

@ -2,16 +2,16 @@
#include <threefishApi.h>
void threefish_encrypt_256(struct threefish_key *keyCtx, u64 *input,
void threefish_encrypt_256(struct threefish_key *key_ctx, u64 *input,
u64 *output)
{
u64 b0 = input[0], b1 = input[1],
b2 = input[2], b3 = input[3];
u64 k0 = keyCtx->key[0], k1 = keyCtx->key[1],
k2 = keyCtx->key[2], k3 = keyCtx->key[3],
k4 = keyCtx->key[4];
u64 t0 = keyCtx->tweak[0], t1 = keyCtx->tweak[1],
t2 = keyCtx->tweak[2];
b2 = input[2], b3 = input[3];
u64 k0 = key_ctx->key[0], k1 = key_ctx->key[1],
k2 = key_ctx->key[2], k3 = key_ctx->key[3],
k4 = key_ctx->key[4];
u64 t0 = key_ctx->tweak[0], t1 = key_ctx->tweak[1],
t2 = key_ctx->tweak[2];
b1 += k1 + t0;
b0 += b1 + k0;
@ -495,16 +495,16 @@ void threefish_encrypt_256(struct threefish_key *keyCtx, u64 *input,
output[3] = b3 + k1 + 18;
}
void threefish_decrypt_256(struct threefish_key *keyCtx, u64 *input,
void threefish_decrypt_256(struct threefish_key *key_ctx, u64 *input,
u64 *output)
{
u64 b0 = input[0], b1 = input[1],
b2 = input[2], b3 = input[3];
u64 k0 = keyCtx->key[0], k1 = keyCtx->key[1],
k2 = keyCtx->key[2], k3 = keyCtx->key[3],
k4 = keyCtx->key[4];
u64 t0 = keyCtx->tweak[0], t1 = keyCtx->tweak[1],
t2 = keyCtx->tweak[2];
b2 = input[2], b3 = input[3];
u64 k0 = key_ctx->key[0], k1 = key_ctx->key[1],
k2 = key_ctx->key[2], k3 = key_ctx->key[3],
k4 = key_ctx->key[4];
u64 t0 = key_ctx->tweak[0], t1 = key_ctx->tweak[1],
t2 = key_ctx->tweak[2];
u64 tmp;

44
drivers/staging/skein/threefish512Block.c
View File

@ -2,20 +2,20 @@
#include <threefishApi.h>
void threefish_encrypt_512(struct threefish_key *keyCtx, u64 *input,
void threefish_encrypt_512(struct threefish_key *key_ctx, u64 *input,
u64 *output)
{
u64 b0 = input[0], b1 = input[1],
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7];
u64 k0 = keyCtx->key[0], k1 = keyCtx->key[1],
k2 = keyCtx->key[2], k3 = keyCtx->key[3],
k4 = keyCtx->key[4], k5 = keyCtx->key[5],
k6 = keyCtx->key[6], k7 = keyCtx->key[7],
k8 = keyCtx->key[8];
u64 t0 = keyCtx->tweak[0], t1 = keyCtx->tweak[1],
t2 = keyCtx->tweak[2];
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7];
u64 k0 = key_ctx->key[0], k1 = key_ctx->key[1],
k2 = key_ctx->key[2], k3 = key_ctx->key[3],
k4 = key_ctx->key[4], k5 = key_ctx->key[5],
k6 = key_ctx->key[6], k7 = key_ctx->key[7],
k8 = key_ctx->key[8];
u64 t0 = key_ctx->tweak[0], t1 = key_ctx->tweak[1],
t2 = key_ctx->tweak[2];
b1 += k1;
b0 += b1 + k0;
@ -963,20 +963,20 @@ void threefish_encrypt_512(struct threefish_key *keyCtx, u64 *input,
output[7] = b7 + k7 + 18;
}
void threefish_decrypt_512(struct threefish_key *keyCtx, u64 *input,
void threefish_decrypt_512(struct threefish_key *key_ctx, u64 *input,
u64 *output)
{
u64 b0 = input[0], b1 = input[1],
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7];
u64 k0 = keyCtx->key[0], k1 = keyCtx->key[1],
k2 = keyCtx->key[2], k3 = keyCtx->key[3],
k4 = keyCtx->key[4], k5 = keyCtx->key[5],
k6 = keyCtx->key[6], k7 = keyCtx->key[7],
k8 = keyCtx->key[8];
u64 t0 = keyCtx->tweak[0], t1 = keyCtx->tweak[1],
t2 = keyCtx->tweak[2];
b2 = input[2], b3 = input[3],
b4 = input[4], b5 = input[5],
b6 = input[6], b7 = input[7];
u64 k0 = key_ctx->key[0], k1 = key_ctx->key[1],
k2 = key_ctx->key[2], k3 = key_ctx->key[3],
k4 = key_ctx->key[4], k5 = key_ctx->key[5],
k6 = key_ctx->key[6], k7 = key_ctx->key[7],
k8 = key_ctx->key[8];
u64 t0 = key_ctx->tweak[0], t1 = key_ctx->tweak[1],
t2 = key_ctx->tweak[2];
u64 tmp;

60
drivers/staging/skein/threefishApi.c
View File

@ -3,76 +3,76 @@
#include <linux/string.h>
#include <threefishApi.h>
void threefish_set_key(struct threefish_key *keyCtx,
enum threefish_size stateSize,
u64 *keyData, u64 *tweak)
void threefish_set_key(struct threefish_key *key_ctx,
enum threefish_size state_size,
u64 *key_data, u64 *tweak)
{
int keyWords = stateSize / 64;
int key_words = state_size / 64;
int i;
u64 parity = KeyScheduleConst;
keyCtx->tweak[0] = tweak[0];
keyCtx->tweak[1] = tweak[1];
keyCtx->tweak[2] = tweak[0] ^ tweak[1];
key_ctx->tweak[0] = tweak[0];
key_ctx->tweak[1] = tweak[1];
key_ctx->tweak[2] = tweak[0] ^ tweak[1];
for (i = 0; i < keyWords; i++) {
keyCtx->key[i] = keyData[i];
parity ^= keyData[i];
for (i = 0; i < key_words; i++) {
key_ctx->key[i] = key_data[i];
parity ^= key_data[i];
}
keyCtx->key[i] = parity;
keyCtx->stateSize = stateSize;
key_ctx->key[i] = parity;
key_ctx->state_size = state_size;
}
void threefish_encrypt_block_bytes(struct threefish_key *keyCtx, u8 *in,
void threefish_encrypt_block_bytes(struct threefish_key *key_ctx, u8 *in,
u8 *out)
{
u64 plain[SKEIN_MAX_STATE_WORDS]; /* max number of words*/
u64 cipher[SKEIN_MAX_STATE_WORDS];
Skein_Get64_LSB_First(plain, in, keyCtx->stateSize / 64);
threefish_encrypt_block_words(keyCtx, plain, cipher);
Skein_Put64_LSB_First(out, cipher, keyCtx->stateSize / 8);
Skein_Get64_LSB_First(plain, in, key_ctx->state_size / 64);
threefish_encrypt_block_words(key_ctx, plain, cipher);
Skein_Put64_LSB_First(out, cipher, key_ctx->state_size / 8);
}
void threefish_encrypt_block_words(struct threefish_key *keyCtx, u64 *in,
void threefish_encrypt_block_words(struct threefish_key *key_ctx, u64 *in,
u64 *out)
{
switch (keyCtx->stateSize) {
switch (key_ctx->state_size) {
case Threefish256:
threefish_encrypt_256(keyCtx, in, out);
threefish_encrypt_256(key_ctx, in, out);
break;
case Threefish512:
threefish_encrypt_512(keyCtx, in, out);
threefish_encrypt_512(key_ctx, in, out);
break;
case Threefish1024:
threefish_encrypt_1024(keyCtx, in, out);
threefish_encrypt_1024(key_ctx, in, out);
break;
}
}
void threefish_decrypt_block_bytes(struct threefish_key *keyCtx, u8 *in,
void threefish_decrypt_block_bytes(struct threefish_key *key_ctx, u8 *in,
u8 *out)
{
u64 plain[SKEIN_MAX_STATE_WORDS]; /* max number of words*/
u64 cipher[SKEIN_MAX_STATE_WORDS];
Skein_Get64_LSB_First(cipher, in, keyCtx->stateSize / 64);
threefish_decrypt_block_words(keyCtx, cipher, plain);
Skein_Put64_LSB_First(out, plain, keyCtx->stateSize / 8);
Skein_Get64_LSB_First(cipher, in, key_ctx->state_size / 64);
threefish_decrypt_block_words(key_ctx, cipher, plain);
Skein_Put64_LSB_First(out, plain, key_ctx->state_size / 8);
}
void threefish_decrypt_block_words(struct threefish_key *keyCtx, u64 *in,
void threefish_decrypt_block_words(struct threefish_key *key_ctx, u64 *in,
u64 *out)
{
switch (keyCtx->stateSize) {
switch (key_ctx->state_size) {
case Threefish256:
threefish_decrypt_256(keyCtx, in, out);
threefish_decrypt_256(key_ctx, in, out);
break;
case Threefish512:
threefish_decrypt_512(keyCtx, in, out);
threefish_decrypt_512(key_ctx, in, out);
break;
case Threefish1024:
threefish_decrypt_1024(keyCtx, in, out);
threefish_decrypt_1024(key_ctx, in, out);
break;
}
}