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u-boot/lib/sha512.c
Siew Chin Lim 277b879906 lib: sha512: include "compiler.h" 
Include "compiler.h" in sha512.c. This is needed by 'cpu_to_be64' macro
that used in 'sha512_base_do_finalize' function.

Signed-off-by: Siew Chin Lim <elly.siew.chin.lim@intel.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
2021-02-24 16:51:49 -05:00

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// SPDX-License-Identifier: GPL-2.0+
/*
* FIPS-180-2 compliant SHA-512 and SHA-384 implementation
*
* SHA-512 code by Jean-Luc Cooke <jlcooke@certainkey.com>
*
* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
* Copyright (c) 2003 Kyle McMartin <kyle@debian.org>
* Copyright (c) 2020 Reuben Dowle <reuben.dowle@4rf.com>
*/
#ifndef USE_HOSTCC
#include <common.h>
#include <linux/string.h>
#else
#include <string.h>
#endif /* USE_HOSTCC */
#include <compiler.h>
#include <watchdog.h>
#include <u-boot/sha512.h>
const uint8_t sha384_der_prefix[SHA384_DER_LEN] = {
0x30, 0x41, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x02, 0x05,
0x00, 0x04, 0x30
};
const uint8_t sha512_der_prefix[SHA512_DER_LEN] = {
0x30, 0x51, 0x30, 0x0d, 0x06, 0x09, 0x60, 0x86,
0x48, 0x01, 0x65, 0x03, 0x04, 0x02, 0x03, 0x05,
0x00, 0x04, 0x40
};
#define SHA384_H0 0xcbbb9d5dc1059ed8ULL
#define SHA384_H1 0x629a292a367cd507ULL
#define SHA384_H2 0x9159015a3070dd17ULL
#define SHA384_H3 0x152fecd8f70e5939ULL
#define SHA384_H4 0x67332667ffc00b31ULL
#define SHA384_H5 0x8eb44a8768581511ULL
#define SHA384_H6 0xdb0c2e0d64f98fa7ULL
#define SHA384_H7 0x47b5481dbefa4fa4ULL
#define SHA512_H0 0x6a09e667f3bcc908ULL
#define SHA512_H1 0xbb67ae8584caa73bULL
#define SHA512_H2 0x3c6ef372fe94f82bULL
#define SHA512_H3 0xa54ff53a5f1d36f1ULL
#define SHA512_H4 0x510e527fade682d1ULL
#define SHA512_H5 0x9b05688c2b3e6c1fULL
#define SHA512_H6 0x1f83d9abfb41bd6bULL
#define SHA512_H7 0x5be0cd19137e2179ULL
static inline uint64_t Ch(uint64_t x, uint64_t y, uint64_t z)
{
return z ^ (x & (y ^ z));
}
static inline uint64_t Maj(uint64_t x, uint64_t y, uint64_t z)
{
return (x & y) | (z & (x | y));
}
static const uint64_t sha512_K[80] = {
0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL, 0xb5c0fbcfec4d3b2fULL,
0xe9b5dba58189dbbcULL, 0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL, 0xd807aa98a3030242ULL,
0x12835b0145706fbeULL, 0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL, 0x9bdc06a725c71235ULL,
0xc19bf174cf692694ULL, 0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL, 0x2de92c6f592b0275ULL,
0x4a7484aa6ea6e483ULL, 0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL, 0xb00327c898fb213fULL,
0xbf597fc7beef0ee4ULL, 0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
0x06ca6351e003826fULL, 0x142929670a0e6e70ULL, 0x27b70a8546d22ffcULL,
0x2e1b21385c26c926ULL, 0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL, 0x81c2c92e47edaee6ULL,
0x92722c851482353bULL, 0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL, 0xd192e819d6ef5218ULL,
0xd69906245565a910ULL, 0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL, 0x2748774cdf8eeb99ULL,
0x34b0bcb5e19b48a8ULL, 0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL, 0x748f82ee5defb2fcULL,
0x78a5636f43172f60ULL, 0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL, 0xbef9a3f7b2c67915ULL,
0xc67178f2e372532bULL, 0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL, 0x06f067aa72176fbaULL,
0x0a637dc5a2c898a6ULL, 0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
0x28db77f523047d84ULL, 0x32caab7b40c72493ULL, 0x3c9ebe0a15c9bebcULL,
0x431d67c49c100d4cULL, 0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL,
};
static inline uint64_t ror64(uint64_t word, unsigned int shift)
{
return (word >> (shift & 63)) | (word << ((-shift) & 63));
}
#define e0(x) (ror64(x,28) ^ ror64(x,34) ^ ror64(x,39))
#define e1(x) (ror64(x,14) ^ ror64(x,18) ^ ror64(x,41))
#define s0(x) (ror64(x, 1) ^ ror64(x, 8) ^ (x >> 7))
#define s1(x) (ror64(x,19) ^ ror64(x,61) ^ (x >> 6))
/*
* 64-bit integer manipulation macros (big endian)
*/
#ifndef GET_UINT64_BE
#define GET_UINT64_BE(n,b,i) { \
(n) = ( (unsigned long long) (b)[(i) ] << 56 ) \
| ( (unsigned long long) (b)[(i) + 1] << 48 ) \
| ( (unsigned long long) (b)[(i) + 2] << 40 ) \
| ( (unsigned long long) (b)[(i) + 3] << 32 ) \
| ( (unsigned long long) (b)[(i) + 4] << 24 ) \
| ( (unsigned long long) (b)[(i) + 5] << 16 ) \
| ( (unsigned long long) (b)[(i) + 6] << 8 ) \
| ( (unsigned long long) (b)[(i) + 7] ); \
}
#endif
#ifndef PUT_UINT64_BE
#define PUT_UINT64_BE(n,b,i) { \
(b)[(i) ] = (unsigned char) ( (n) >> 56 ); \
(b)[(i) + 1] = (unsigned char) ( (n) >> 48 ); \
(b)[(i) + 2] = (unsigned char) ( (n) >> 40 ); \
(b)[(i) + 3] = (unsigned char) ( (n) >> 32 ); \
(b)[(i) + 4] = (unsigned char) ( (n) >> 24 ); \
(b)[(i) + 5] = (unsigned char) ( (n) >> 16 ); \
(b)[(i) + 6] = (unsigned char) ( (n) >> 8 ); \
(b)[(i) + 7] = (unsigned char) ( (n) ); \
}
#endif
static inline void LOAD_OP(int I, uint64_t *W, const uint8_t *input)
{
GET_UINT64_BE(W[I], input, I*8);
}
static inline void BLEND_OP(int I, uint64_t *W)
{
W[I & 15] += s1(W[(I-2) & 15]) + W[(I-7) & 15] + s0(W[(I-15) & 15]);
}
static void
sha512_transform(uint64_t *state, const uint8_t *input)
{
uint64_t a, b, c, d, e, f, g, h, t1, t2;
int i;
uint64_t W[16];
/* load the state into our registers */
a=state[0]; b=state[1]; c=state[2]; d=state[3];
e=state[4]; f=state[5]; g=state[6]; h=state[7];
/* now iterate */
for (i=0; i<80; i+=8) {
if (!(i & 8)) {
int j;
if (i < 16) {
/* load the input */
for (j = 0; j < 16; j++)
LOAD_OP(i + j, W, input);
} else {
for (j = 0; j < 16; j++) {
BLEND_OP(i + j, W);
}
}
}
t1 = h + e1(e) + Ch(e,f,g) + sha512_K[i ] + W[(i & 15)];
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
t1 = g + e1(d) + Ch(d,e,f) + sha512_K[i+1] + W[(i & 15) + 1];
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
t1 = f + e1(c) + Ch(c,d,e) + sha512_K[i+2] + W[(i & 15) + 2];
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
t1 = e + e1(b) + Ch(b,c,d) + sha512_K[i+3] + W[(i & 15) + 3];
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
t1 = d + e1(a) + Ch(a,b,c) + sha512_K[i+4] + W[(i & 15) + 4];
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
t1 = c + e1(h) + Ch(h,a,b) + sha512_K[i+5] + W[(i & 15) + 5];
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
t1 = b + e1(g) + Ch(g,h,a) + sha512_K[i+6] + W[(i & 15) + 6];
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
t1 = a + e1(f) + Ch(f,g,h) + sha512_K[i+7] + W[(i & 15) + 7];
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
}
state[0] += a; state[1] += b; state[2] += c; state[3] += d;
state[4] += e; state[5] += f; state[6] += g; state[7] += h;
/* erase our data */
a = b = c = d = e = f = g = h = t1 = t2 = 0;
}
static void sha512_block_fn(sha512_context *sst, const uint8_t *src,
int blocks)
{
while (blocks--) {
sha512_transform(sst->state, src);
src += SHA512_BLOCK_SIZE;
}
}
static void sha512_base_do_update(sha512_context *sctx,
const uint8_t *data,
unsigned int len)
{
unsigned int partial = sctx->count[0] % SHA512_BLOCK_SIZE;
sctx->count[0] += len;
if (sctx->count[0] < len)
sctx->count[1]++;
if (unlikely((partial + len) >= SHA512_BLOCK_SIZE)) {
int blocks;
if (partial) {
int p = SHA512_BLOCK_SIZE - partial;
memcpy(sctx->buf + partial, data, p);
data += p;
len -= p;
sha512_block_fn(sctx, sctx->buf, 1);
}
blocks = len / SHA512_BLOCK_SIZE;
len %= SHA512_BLOCK_SIZE;
if (blocks) {
sha512_block_fn(sctx, data, blocks);
data += blocks * SHA512_BLOCK_SIZE;
}
partial = 0;
}
if (len)
memcpy(sctx->buf + partial, data, len);
}
static void sha512_base_do_finalize(sha512_context *sctx)
{
const int bit_offset = SHA512_BLOCK_SIZE - sizeof(uint64_t[2]);
uint64_t *bits = (uint64_t *)(sctx->buf + bit_offset);
unsigned int partial = sctx->count[0] % SHA512_BLOCK_SIZE;
sctx->buf[partial++] = 0x80;
if (partial > bit_offset) {
memset(sctx->buf + partial, 0x0, SHA512_BLOCK_SIZE - partial);
partial = 0;
sha512_block_fn(sctx, sctx->buf, 1);
}
memset(sctx->buf + partial, 0x0, bit_offset - partial);
bits[0] = cpu_to_be64(sctx->count[1] << 3 | sctx->count[0] >> 61);
bits[1] = cpu_to_be64(sctx->count[0] << 3);
sha512_block_fn(sctx, sctx->buf, 1);
}
#if defined(CONFIG_SHA384)
void sha384_starts(sha512_context * ctx)
{
ctx->state[0] = SHA384_H0;
ctx->state[1] = SHA384_H1;
ctx->state[2] = SHA384_H2;
ctx->state[3] = SHA384_H3;
ctx->state[4] = SHA384_H4;
ctx->state[5] = SHA384_H5;
ctx->state[6] = SHA384_H6;
ctx->state[7] = SHA384_H7;
ctx->count[0] = ctx->count[1] = 0;
}
void sha384_update(sha512_context *ctx, const uint8_t *input, uint32_t length)
{
sha512_base_do_update(ctx, input, length);
}
void sha384_finish(sha512_context * ctx, uint8_t digest[SHA384_SUM_LEN])
{
int i;
sha512_base_do_finalize(ctx);
for(i=0; i<SHA384_SUM_LEN / sizeof(uint64_t); i++)
PUT_UINT64_BE(ctx->state[i], digest, i * 8);
}
/*
* Output = SHA-512( input buffer ). Trigger the watchdog every 'chunk_sz'
* bytes of input processed.
*/
void sha384_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz)
{
sha512_context ctx;
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
const unsigned char *end;
unsigned char *curr;
int chunk;
#endif
sha384_starts(&ctx);
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
curr = (unsigned char *)input;
end = input + ilen;
while (curr < end) {
chunk = end - curr;
if (chunk > chunk_sz)
chunk = chunk_sz;
sha384_update(&ctx, curr, chunk);
curr += chunk;
WATCHDOG_RESET();
}
#else
sha384_update(&ctx, input, ilen);
#endif
sha384_finish(&ctx, output);
}
#endif
#if defined(CONFIG_SHA512)
void sha512_starts(sha512_context * ctx)
{
ctx->state[0] = SHA512_H0;
ctx->state[1] = SHA512_H1;
ctx->state[2] = SHA512_H2;
ctx->state[3] = SHA512_H3;
ctx->state[4] = SHA512_H4;
ctx->state[5] = SHA512_H5;
ctx->state[6] = SHA512_H6;
ctx->state[7] = SHA512_H7;
ctx->count[0] = ctx->count[1] = 0;
}
void sha512_update(sha512_context *ctx, const uint8_t *input, uint32_t length)
{
sha512_base_do_update(ctx, input, length);
}
void sha512_finish(sha512_context * ctx, uint8_t digest[SHA512_SUM_LEN])
{
int i;
sha512_base_do_finalize(ctx);
for(i=0; i<SHA512_SUM_LEN / sizeof(uint64_t); i++)
PUT_UINT64_BE(ctx->state[i], digest, i * 8);
}
/*
* Output = SHA-512( input buffer ). Trigger the watchdog every 'chunk_sz'
* bytes of input processed.
*/
void sha512_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz)
{
sha512_context ctx;
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
const unsigned char *end;
unsigned char *curr;
int chunk;
#endif
sha512_starts(&ctx);
#if defined(CONFIG_HW_WATCHDOG) || defined(CONFIG_WATCHDOG)
curr = (unsigned char *)input;
end = input + ilen;
while (curr < end) {
chunk = end - curr;
if (chunk > chunk_sz)
chunk = chunk_sz;
sha512_update(&ctx, curr, chunk);
curr += chunk;
WATCHDOG_RESET();
}
#else
sha512_update(&ctx, input, ilen);
#endif
sha512_finish(&ctx, output);
}
#endif
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