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sunrpc: Use skcipher and ahash/shash

Browse Source 
This patch replaces uses of blkcipher with skcipher and the long
obsolete hash interface with either shash (for non-SG users) and
ahash.

Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Herbert Xu 2016-01-24 21:17:59 +08:00
parent 2731a944f6
commit 3b5cf20cf4
6 changed files with 306 additions and 223 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
include/linux/sunrpc/gss_krb5.h
View File

@ -36,7 +36,7 @@
*
*/
#include <linux/crypto.h>
#include <crypto/skcipher.h>
#include <linux/sunrpc/auth_gss.h>
#include <linux/sunrpc/gss_err.h>
#include <linux/sunrpc/gss_asn1.h>
@ -71,10 +71,10 @@ struct gss_krb5_enctype {
const u32 keyed_cksum; /* is it a keyed cksum? */
const u32 keybytes; /* raw key len, in bytes */
const u32 keylength; /* final key len, in bytes */
u32 (*encrypt) (struct crypto_blkcipher *tfm,
u32 (*encrypt) (struct crypto_skcipher *tfm,
void *iv, void *in, void *out,
int length); /* encryption function */
u32 (*decrypt) (struct crypto_blkcipher *tfm,
u32 (*decrypt) (struct crypto_skcipher *tfm,
void *iv, void *in, void *out,
int length); /* decryption function */
u32 (*mk_key) (const struct gss_krb5_enctype *gk5e,
@ -98,12 +98,12 @@ struct krb5_ctx {
u32 enctype;
u32 flags;
const struct gss_krb5_enctype *gk5e; /* enctype-specific info */
struct crypto_blkcipher *enc;
struct crypto_blkcipher *seq;
struct crypto_blkcipher *acceptor_enc;
struct crypto_blkcipher *initiator_enc;
struct crypto_blkcipher *acceptor_enc_aux;
struct crypto_blkcipher *initiator_enc_aux;
struct crypto_skcipher *enc;
struct crypto_skcipher *seq;
struct crypto_skcipher *acceptor_enc;
struct crypto_skcipher *initiator_enc;
struct crypto_skcipher *acceptor_enc_aux;
struct crypto_skcipher *initiator_enc_aux;
u8 Ksess[GSS_KRB5_MAX_KEYLEN]; /* session key */
u8 cksum[GSS_KRB5_MAX_KEYLEN];
s32 endtime;
@ -262,24 +262,24 @@ gss_unwrap_kerberos(struct gss_ctx *ctx_id, int offset,
u32
krb5_encrypt(struct crypto_blkcipher *key,
krb5_encrypt(struct crypto_skcipher *key,
void *iv, void *in, void *out, int length);
u32
krb5_decrypt(struct crypto_blkcipher *key,
krb5_decrypt(struct crypto_skcipher *key,
void *iv, void *in, void *out, int length);
int
gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *outbuf,
gss_encrypt_xdr_buf(struct crypto_skcipher *tfm, struct xdr_buf *outbuf,
int offset, struct page **pages);
int
gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *inbuf,
gss_decrypt_xdr_buf(struct crypto_skcipher *tfm, struct xdr_buf *inbuf,
int offset);
s32
krb5_make_seq_num(struct krb5_ctx *kctx,
struct crypto_blkcipher *key,
struct crypto_skcipher *key,
int direction,
u32 seqnum, unsigned char *cksum, unsigned char *buf);
@ -320,12 +320,12 @@ gss_krb5_aes_decrypt(struct krb5_ctx *kctx, u32 offset,
int
krb5_rc4_setup_seq_key(struct krb5_ctx *kctx,
struct crypto_blkcipher *cipher,
struct crypto_skcipher *cipher,
unsigned char *cksum);
int
krb5_rc4_setup_enc_key(struct krb5_ctx *kctx,
struct crypto_blkcipher *cipher,
struct crypto_skcipher *cipher,
s32 seqnum);
void
gss_krb5_make_confounder(char *p, u32 conflen);

350
net/sunrpc/auth_gss/gss_krb5_crypto.c
View File

@ -34,11 +34,12 @@
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <crypto/hash.h>
#include <crypto/skcipher.h>
#include <linux/err.h>
#include <linux/types.h>
#include <linux/mm.h>
#include <linux/scatterlist.h>
#include <linux/crypto.h>
#include <linux/highmem.h>
#include <linux/pagemap.h>
#include <linux/random.h>
@ -51,7 +52,7 @@
u32
krb5_encrypt(
struct crypto_blkcipher *tfm,
struct crypto_skcipher *tfm,
void * iv,
void * in,
void * out,
@ -60,24 +61,28 @@ krb5_encrypt(
u32 ret = -EINVAL;
struct scatterlist sg[1];
u8 local_iv[GSS_KRB5_MAX_BLOCKSIZE] = {0};
struct blkcipher_desc desc = { .tfm = tfm, .info = local_iv };
SKCIPHER_REQUEST_ON_STACK(req, tfm);
if (length % crypto_blkcipher_blocksize(tfm) != 0)
if (length % crypto_skcipher_blocksize(tfm) != 0)
goto out;
if (crypto_blkcipher_ivsize(tfm) > GSS_KRB5_MAX_BLOCKSIZE) {
if (crypto_skcipher_ivsize(tfm) > GSS_KRB5_MAX_BLOCKSIZE) {
dprintk("RPC: gss_k5encrypt: tfm iv size too large %d\n",
crypto_blkcipher_ivsize(tfm));
crypto_skcipher_ivsize(tfm));
goto out;
}
if (iv)
memcpy(local_iv, iv, crypto_blkcipher_ivsize(tfm));
memcpy(local_iv, iv, crypto_skcipher_ivsize(tfm));
memcpy(out, in, length);
sg_init_one(sg, out, length);
ret = crypto_blkcipher_encrypt_iv(&desc, sg, sg, length);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, sg, sg, length, local_iv);
ret = crypto_skcipher_encrypt(req);
skcipher_request_zero(req);
out:
dprintk("RPC: krb5_encrypt returns %d\n", ret);
return ret;
@ -85,7 +90,7 @@ out:
u32
krb5_decrypt(
struct crypto_blkcipher *tfm,
struct crypto_skcipher *tfm,
void * iv,
void * in,
void * out,
@ -94,23 +99,27 @@ krb5_decrypt(
u32 ret = -EINVAL;
struct scatterlist sg[1];
u8 local_iv[GSS_KRB5_MAX_BLOCKSIZE] = {0};
struct blkcipher_desc desc = { .tfm = tfm, .info = local_iv };
SKCIPHER_REQUEST_ON_STACK(req, tfm);
if (length % crypto_blkcipher_blocksize(tfm) != 0)
if (length % crypto_skcipher_blocksize(tfm) != 0)
goto out;
if (crypto_blkcipher_ivsize(tfm) > GSS_KRB5_MAX_BLOCKSIZE) {
if (crypto_skcipher_ivsize(tfm) > GSS_KRB5_MAX_BLOCKSIZE) {
dprintk("RPC: gss_k5decrypt: tfm iv size too large %d\n",
crypto_blkcipher_ivsize(tfm));
crypto_skcipher_ivsize(tfm));
goto out;
}
if (iv)
memcpy(local_iv,iv, crypto_blkcipher_ivsize(tfm));
memcpy(local_iv,iv, crypto_skcipher_ivsize(tfm));
memcpy(out, in, length);
sg_init_one(sg, out, length);
ret = crypto_blkcipher_decrypt_iv(&desc, sg, sg, length);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, sg, sg, length, local_iv);
ret = crypto_skcipher_decrypt(req);
skcipher_request_zero(req);
out:
dprintk("RPC: gss_k5decrypt returns %d\n",ret);
return ret;
@ -119,9 +128,11 @@ out:
static int
checksummer(struct scatterlist *sg, void *data)
{
struct hash_desc *desc = data;
struct ahash_request *req = data;
return crypto_hash_update(desc, sg, sg->length);
ahash_request_set_crypt(req, sg, NULL, sg->length);
return crypto_ahash_update(req);
}
static int
@ -152,13 +163,13 @@ make_checksum_hmac_md5(struct krb5_ctx *kctx, char *header, int hdrlen,
struct xdr_buf *body, int body_offset, u8 *cksumkey,
unsigned int usage, struct xdr_netobj *cksumout)
{
struct hash_desc desc;
struct scatterlist sg[1];
int err;
u8 checksumdata[GSS_KRB5_MAX_CKSUM_LEN];
u8 rc4salt[4];
struct crypto_hash *md5;
struct crypto_hash *hmac_md5;
struct crypto_ahash *md5;
struct crypto_ahash *hmac_md5;
struct ahash_request *req;
if (cksumkey == NULL)
return GSS_S_FAILURE;
@ -174,61 +185,79 @@ make_checksum_hmac_md5(struct krb5_ctx *kctx, char *header, int hdrlen,
return GSS_S_FAILURE;
}
md5 = crypto_alloc_hash("md5", 0, CRYPTO_ALG_ASYNC);
md5 = crypto_alloc_ahash("md5", 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(md5))
return GSS_S_FAILURE;
hmac_md5 = crypto_alloc_hash(kctx->gk5e->cksum_name, 0,
CRYPTO_ALG_ASYNC);
hmac_md5 = crypto_alloc_ahash(kctx->gk5e->cksum_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(hmac_md5)) {
crypto_free_hash(md5);
crypto_free_ahash(md5);
return GSS_S_FAILURE;
}
desc.tfm = md5;
desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
req = ahash_request_alloc(md5, GFP_KERNEL);
if (!req) {
crypto_free_ahash(hmac_md5);
crypto_free_ahash(md5);
return GSS_S_FAILURE;
}
err = crypto_hash_init(&desc);
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL);
err = crypto_ahash_init(req);
if (err)
goto out;
sg_init_one(sg, rc4salt, 4);
err = crypto_hash_update(&desc, sg, 4);
ahash_request_set_crypt(req, sg, NULL, 4);
err = crypto_ahash_update(req);
if (err)
goto out;
sg_init_one(sg, header, hdrlen);
err = crypto_hash_update(&desc, sg, hdrlen);
ahash_request_set_crypt(req, sg, NULL, hdrlen);
err = crypto_ahash_update(req);
if (err)
goto out;
err = xdr_process_buf(body, body_offset, body->len - body_offset,
checksummer, &desc);
checksummer, req);
if (err)
goto out;
err = crypto_hash_final(&desc, checksumdata);
ahash_request_set_crypt(req, NULL, checksumdata, 0);
err = crypto_ahash_final(req);
if (err)
goto out;
desc.tfm = hmac_md5;
desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
ahash_request_free(req);
req = ahash_request_alloc(hmac_md5, GFP_KERNEL);
if (!req) {
crypto_free_ahash(hmac_md5);
crypto_free_ahash(md5);
return GSS_S_FAILURE;
}
err = crypto_hash_init(&desc);
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL);
err = crypto_ahash_init(req);
if (err)
goto out;
err = crypto_hash_setkey(hmac_md5, cksumkey, kctx->gk5e->keylength);
err = crypto_ahash_setkey(hmac_md5, cksumkey, kctx->gk5e->keylength);
if (err)
goto out;
sg_init_one(sg, checksumdata, crypto_hash_digestsize(md5));
err = crypto_hash_digest(&desc, sg, crypto_hash_digestsize(md5),
checksumdata);
sg_init_one(sg, checksumdata, crypto_ahash_digestsize(md5));
ahash_request_set_crypt(req, sg, checksumdata,
crypto_ahash_digestsize(md5));
err = crypto_ahash_digest(req);
if (err)
goto out;
memcpy(cksumout->data, checksumdata, kctx->gk5e->cksumlength);
cksumout->len = kctx->gk5e->cksumlength;
out:
crypto_free_hash(md5);
crypto_free_hash(hmac_md5);
ahash_request_free(req);
crypto_free_ahash(md5);
crypto_free_ahash(hmac_md5);
return err ? GSS_S_FAILURE : 0;
}
@ -242,7 +271,8 @@ make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,
struct xdr_buf *body, int body_offset, u8 *cksumkey,
unsigned int usage, struct xdr_netobj *cksumout)
{
struct hash_desc desc;
struct crypto_ahash *tfm;
struct ahash_request *req;
struct scatterlist sg[1];
int err;
u8 checksumdata[GSS_KRB5_MAX_CKSUM_LEN];
@ -259,32 +289,41 @@ make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,
return GSS_S_FAILURE;
}
desc.tfm = crypto_alloc_hash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(desc.tfm))
tfm = crypto_alloc_ahash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return GSS_S_FAILURE;
desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
checksumlen = crypto_hash_digestsize(desc.tfm);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
crypto_free_ahash(tfm);
return GSS_S_FAILURE;
}
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL);
checksumlen = crypto_ahash_digestsize(tfm);
if (cksumkey != NULL) {
err = crypto_hash_setkey(desc.tfm, cksumkey,
kctx->gk5e->keylength);
err = crypto_ahash_setkey(tfm, cksumkey,
kctx->gk5e->keylength);
if (err)
goto out;
}
err = crypto_hash_init(&desc);
err = crypto_ahash_init(req);
if (err)
goto out;
sg_init_one(sg, header, hdrlen);
err = crypto_hash_update(&desc, sg, hdrlen);
ahash_request_set_crypt(req, sg, NULL, hdrlen);
err = crypto_ahash_update(req);
if (err)
goto out;
err = xdr_process_buf(body, body_offset, body->len - body_offset,
checksummer, &desc);
checksummer, req);
if (err)
goto out;
err = crypto_hash_final(&desc, checksumdata);
ahash_request_set_crypt(req, NULL, checksumdata, 0);
err = crypto_ahash_final(req);
if (err)
goto out;
@ -307,7 +346,8 @@ make_checksum(struct krb5_ctx *kctx, char *header, int hdrlen,
}
cksumout->len = kctx->gk5e->cksumlength;
out:
crypto_free_hash(desc.tfm);
ahash_request_free(req);
crypto_free_ahash(tfm);
return err ? GSS_S_FAILURE : 0;
}
@ -323,7 +363,8 @@ make_checksum_v2(struct krb5_ctx *kctx, char *header, int hdrlen,
struct xdr_buf *body, int body_offset, u8 *cksumkey,
unsigned int usage, struct xdr_netobj *cksumout)
{
struct hash_desc desc;
struct crypto_ahash *tfm;
struct ahash_request *req;
struct scatterlist sg[1];
int err;
u8 checksumdata[GSS_KRB5_MAX_CKSUM_LEN];
@ -340,31 +381,39 @@ make_checksum_v2(struct krb5_ctx *kctx, char *header, int hdrlen,
return GSS_S_FAILURE;
}
desc.tfm = crypto_alloc_hash(kctx->gk5e->cksum_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(desc.tfm))
tfm = crypto_alloc_ahash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(tfm))
return GSS_S_FAILURE;
checksumlen = crypto_hash_digestsize(desc.tfm);
desc.flags = CRYPTO_TFM_REQ_MAY_SLEEP;
checksumlen = crypto_ahash_digestsize(tfm);
err = crypto_hash_setkey(desc.tfm, cksumkey, kctx->gk5e->keylength);
req = ahash_request_alloc(tfm, GFP_KERNEL);
if (!req) {
crypto_free_ahash(tfm);
return GSS_S_FAILURE;
}
ahash_request_set_callback(req, CRYPTO_TFM_REQ_MAY_SLEEP, NULL, NULL);
err = crypto_ahash_setkey(tfm, cksumkey, kctx->gk5e->keylength);
if (err)
goto out;
err = crypto_hash_init(&desc);
err = crypto_ahash_init(req);
if (err)
goto out;
err = xdr_process_buf(body, body_offset, body->len - body_offset,
checksummer, &desc);
checksummer, req);
if (err)
goto out;
if (header != NULL) {
sg_init_one(sg, header, hdrlen);
err = crypto_hash_update(&desc, sg, hdrlen);
ahash_request_set_crypt(req, sg, NULL, hdrlen);
err = crypto_ahash_update(req);
if (err)
goto out;
}
err = crypto_hash_final(&desc, checksumdata);
ahash_request_set_crypt(req, NULL, checksumdata, 0);
err = crypto_ahash_final(req);
if (err)
goto out;
@ -381,13 +430,14 @@ make_checksum_v2(struct krb5_ctx *kctx, char *header, int hdrlen,
break;
}
out:
crypto_free_hash(desc.tfm);
ahash_request_free(req);
crypto_free_ahash(tfm);
return err ? GSS_S_FAILURE : 0;
}
struct encryptor_desc {
u8 iv[GSS_KRB5_MAX_BLOCKSIZE];
struct blkcipher_desc desc;
struct skcipher_request *req;
int pos;
struct xdr_buf *outbuf;
struct page **pages;
@ -402,6 +452,7 @@ encryptor(struct scatterlist *sg, void *data)
{
struct encryptor_desc *desc = data;
struct xdr_buf *outbuf = desc->outbuf;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(desc->req);
struct page *in_page;
int thislen = desc->fraglen + sg->length;
int fraglen, ret;
@ -427,7 +478,7 @@ encryptor(struct scatterlist *sg, void *data)
desc->fraglen += sg->length;
desc->pos += sg->length;
fraglen = thislen & (crypto_blkcipher_blocksize(desc->desc.tfm) - 1);
fraglen = thislen & (crypto_skcipher_blocksize(tfm) - 1);
thislen -= fraglen;
if (thislen == 0)
@ -436,8 +487,10 @@ encryptor(struct scatterlist *sg, void *data)
sg_mark_end(&desc->infrags[desc->fragno - 1]);
sg_mark_end(&desc->outfrags[desc->fragno - 1]);
ret = crypto_blkcipher_encrypt_iv(&desc->desc, desc->outfrags,
desc->infrags, thislen);
skcipher_request_set_crypt(desc->req, desc->infrags, desc->outfrags,
thislen, desc->iv);
ret = crypto_skcipher_encrypt(desc->req);
if (ret)
return ret;
@ -459,18 +512,20 @@ encryptor(struct scatterlist *sg, void *data)
}
int
gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *buf,
gss_encrypt_xdr_buf(struct crypto_skcipher *tfm, struct xdr_buf *buf,
int offset, struct page **pages)
{
int ret;
struct encryptor_desc desc;
SKCIPHER_REQUEST_ON_STACK(req, tfm);
BUG_ON((buf->len - offset) % crypto_blkcipher_blocksize(tfm) != 0);
BUG_ON((buf->len - offset) % crypto_skcipher_blocksize(tfm) != 0);
skcipher_request_set_tfm(req, tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
memset(desc.iv, 0, sizeof(desc.iv));
desc.desc.tfm = tfm;
desc.desc.info = desc.iv;
desc.desc.flags = 0;
desc.req = req;
desc.pos = offset;
desc.outbuf = buf;
desc.pages = pages;
@ -481,12 +536,13 @@ gss_encrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *buf,
sg_init_table(desc.outfrags, 4);
ret = xdr_process_buf(buf, offset, buf->len - offset, encryptor, &desc);
skcipher_request_zero(req);
return ret;
}
struct decryptor_desc {
u8 iv[GSS_KRB5_MAX_BLOCKSIZE];
struct blkcipher_desc desc;
struct skcipher_request *req;
struct scatterlist frags[4];
int fragno;
int fraglen;
@ -497,6 +553,7 @@ decryptor(struct scatterlist *sg, void *data)
{
struct decryptor_desc *desc = data;
int thislen = desc->fraglen + sg->length;
struct crypto_skcipher *tfm = crypto_skcipher_reqtfm(desc->req);
int fraglen, ret;
/* Worst case is 4 fragments: head, end of page 1, start
@ -507,7 +564,7 @@ decryptor(struct scatterlist *sg, void *data)
desc->fragno++;
desc->fraglen += sg->length;
fraglen = thislen & (crypto_blkcipher_blocksize(desc->desc.tfm) - 1);
fraglen = thislen & (crypto_skcipher_blocksize(tfm) - 1);
thislen -= fraglen;
if (thislen == 0)
@ -515,8 +572,10 @@ decryptor(struct scatterlist *sg, void *data)
sg_mark_end(&desc->frags[desc->fragno - 1]);
ret = crypto_blkcipher_decrypt_iv(&desc->desc, desc->frags,
desc->frags, thislen);
skcipher_request_set_crypt(desc->req, desc->frags, desc->frags,
thislen, desc->iv);
ret = crypto_skcipher_decrypt(desc->req);
if (ret)
return ret;
@ -535,24 +594,29 @@ decryptor(struct scatterlist *sg, void *data)
}
int
gss_decrypt_xdr_buf(struct crypto_blkcipher *tfm, struct xdr_buf *buf,
gss_decrypt_xdr_buf(struct crypto_skcipher *tfm, struct xdr_buf *buf,
int offset)
{
int ret;
struct decryptor_desc desc;
SKCIPHER_REQUEST_ON_STACK(req, tfm);
/* XXXJBF: */
BUG_ON((buf->len - offset) % crypto_blkcipher_blocksize(tfm) != 0);
BUG_ON((buf->len - offset) % crypto_skcipher_blocksize(tfm) != 0);
skcipher_request_set_tfm(req, tfm);
skcipher_request_set_callback(req, 0, NULL, NULL);
memset(desc.iv, 0, sizeof(desc.iv));
desc.desc.tfm = tfm;
desc.desc.info = desc.iv;
desc.desc.flags = 0;
desc.req = req;
desc.fragno = 0;
desc.fraglen = 0;
sg_init_table(desc.frags, 4);
return xdr_process_buf(buf, offset, buf->len - offset, decryptor, &desc);
ret = xdr_process_buf(buf, offset, buf->len - offset, decryptor, &desc);
skcipher_request_zero(req);
return ret;
}
/*
@ -594,12 +658,12 @@ xdr_extend_head(struct xdr_buf *buf, unsigned int base, unsigned int shiftlen)
}
static u32
gss_krb5_cts_crypt(struct crypto_blkcipher *cipher, struct xdr_buf *buf,
gss_krb5_cts_crypt(struct crypto_skcipher *cipher, struct xdr_buf *buf,
u32 offset, u8 *iv, struct page **pages, int encrypt)
{
u32 ret;
struct scatterlist sg[1];
struct blkcipher_desc desc = { .tfm = cipher, .info = iv };
SKCIPHER_REQUEST_ON_STACK(req, cipher);
u8 data[GSS_KRB5_MAX_BLOCKSIZE * 2];
struct page **save_pages;
u32 len = buf->len - offset;
@ -625,10 +689,16 @@ gss_krb5_cts_crypt(struct crypto_blkcipher *cipher, struct xdr_buf *buf,
sg_init_one(sg, data, len);
skcipher_request_set_tfm(req, cipher);
skcipher_request_set_callback(req, 0, NULL, NULL);
skcipher_request_set_crypt(req, sg, sg, len, iv);
if (encrypt)
ret = crypto_blkcipher_encrypt_iv(&desc, sg, sg, len);
ret = crypto_skcipher_encrypt(req);
else
ret = crypto_blkcipher_decrypt_iv(&desc, sg, sg, len);
ret = crypto_skcipher_decrypt(req);
skcipher_request_zero(req);
if (ret)
goto out;
@ -647,7 +717,7 @@ gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset,
struct xdr_netobj hmac;
u8 *cksumkey;
u8 *ecptr;
struct crypto_blkcipher *cipher, *aux_cipher;
struct crypto_skcipher *cipher, *aux_cipher;
int blocksize;
struct page **save_pages;
int nblocks, nbytes;
@ -666,7 +736,7 @@ gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset,
cksumkey = kctx->acceptor_integ;
usage = KG_USAGE_ACCEPTOR_SEAL;
}
blocksize = crypto_blkcipher_blocksize(cipher);
blocksize = crypto_skcipher_blocksize(cipher);
/* hide the gss token header and insert the confounder */
offset += GSS_KRB5_TOK_HDR_LEN;
@ -719,20 +789,24 @@ gss_krb5_aes_encrypt(struct krb5_ctx *kctx, u32 offset,
memset(desc.iv, 0, sizeof(desc.iv));
if (cbcbytes) {
SKCIPHER_REQUEST_ON_STACK(req, aux_cipher);
desc.pos = offset + GSS_KRB5_TOK_HDR_LEN;
desc.fragno = 0;
desc.fraglen = 0;
desc.pages = pages;
desc.outbuf = buf;
desc.desc.info = desc.iv;
desc.desc.flags = 0;
desc.desc.tfm = aux_cipher;
desc.req = req;
skcipher_request_set_tfm(req, aux_cipher);
skcipher_request_set_callback(req, 0, NULL, NULL);
sg_init_table(desc.infrags, 4);
sg_init_table(desc.outfrags, 4);
err = xdr_process_buf(buf, offset + GSS_KRB5_TOK_HDR_LEN,
cbcbytes, encryptor, &desc);
skcipher_request_zero(req);
if (err)
goto out_err;
}
@ -763,7 +837,7 @@ gss_krb5_aes_decrypt(struct krb5_ctx *kctx, u32 offset, struct xdr_buf *buf,
struct xdr_buf subbuf;
u32 ret = 0;
u8 *cksum_key;
struct crypto_blkcipher *cipher, *aux_cipher;
struct crypto_skcipher *cipher, *aux_cipher;
struct xdr_netobj our_hmac_obj;
u8 our_hmac[GSS_KRB5_MAX_CKSUM_LEN];
u8 pkt_hmac[GSS_KRB5_MAX_CKSUM_LEN];
@ -782,7 +856,7 @@ gss_krb5_aes_decrypt(struct krb5_ctx *kctx, u32 offset, struct xdr_buf *buf,
cksum_key = kctx->initiator_integ;
usage = KG_USAGE_INITIATOR_SEAL;
}
blocksize = crypto_blkcipher_blocksize(cipher);
blocksize = crypto_skcipher_blocksize(cipher);
/* create a segment skipping the header and leaving out the checksum */
@ -799,15 +873,19 @@ gss_krb5_aes_decrypt(struct krb5_ctx *kctx, u32 offset, struct xdr_buf *buf,
memset(desc.iv, 0, sizeof(desc.iv));
if (cbcbytes) {
SKCIPHER_REQUEST_ON_STACK(req, aux_cipher);
desc.fragno = 0;
desc.fraglen = 0;
desc.desc.info = desc.iv;
desc.desc.flags = 0;
desc.desc.tfm = aux_cipher;
desc.req = req;
skcipher_request_set_tfm(req, aux_cipher);
skcipher_request_set_callback(req, 0, NULL, NULL);
sg_init_table(desc.frags, 4);
ret = xdr_process_buf(&subbuf, 0, cbcbytes, decryptor, &desc);
skcipher_request_zero(req);
if (ret)
goto out_err;
}
@ -850,61 +928,62 @@ out_err:
* Set the key of the given cipher.
*/
int
krb5_rc4_setup_seq_key(struct krb5_ctx *kctx, struct crypto_blkcipher *cipher,
krb5_rc4_setup_seq_key(struct krb5_ctx *kctx, struct crypto_skcipher *cipher,
unsigned char *cksum)
{
struct crypto_hash *hmac;
struct hash_desc desc;
struct scatterlist sg[1];
struct crypto_shash *hmac;
struct shash_desc *desc;
u8 Kseq[GSS_KRB5_MAX_KEYLEN];
u32 zeroconstant = 0;
int err;
dprintk("%s: entered\n", __func__);
hmac = crypto_alloc_hash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
hmac = crypto_alloc_shash(kctx->gk5e->cksum_name, 0, 0);
if (IS_ERR(hmac)) {
dprintk("%s: error %ld, allocating hash '%s'\n",
__func__, PTR_ERR(hmac), kctx->gk5e->cksum_name);
return PTR_ERR(hmac);
}
desc.tfm = hmac;
desc.flags = 0;
desc = kmalloc(sizeof(*desc), GFP_KERNEL);
if (!desc) {
dprintk("%s: failed to allocate shash descriptor for '%s'\n",
__func__, kctx->gk5e->cksum_name);
crypto_free_shash(hmac);
return -ENOMEM;
}
err = crypto_hash_init(&desc);
if (err)
goto out_err;
desc->tfm = hmac;
desc->flags = 0;
/* Compute intermediate Kseq from session key */
err = crypto_hash_setkey(hmac, kctx->Ksess, kctx->gk5e->keylength);
err = crypto_shash_setkey(hmac, kctx->Ksess, kctx->gk5e->keylength);
if (err)
goto out_err;
sg_init_one(sg, &zeroconstant, 4);
err = crypto_hash_digest(&desc, sg, 4, Kseq);
err = crypto_shash_digest(desc, (u8 *)&zeroconstant, 4, Kseq);
if (err)
goto out_err;
/* Compute final Kseq from the checksum and intermediate Kseq */
err = crypto_hash_setkey(hmac, Kseq, kctx->gk5e->keylength);
err = crypto_shash_setkey(hmac, Kseq, kctx->gk5e->keylength);
if (err)
goto out_err;
sg_set_buf(sg, cksum, 8);
err = crypto_hash_digest(&desc, sg, 8, Kseq);
err = crypto_shash_digest(desc, cksum, 8, Kseq);
if (err)
goto out_err;
err = crypto_blkcipher_setkey(cipher, Kseq, kctx->gk5e->keylength);
err = crypto_skcipher_setkey(cipher, Kseq, kctx->gk5e->keylength);
if (err)
goto out_err;
err = 0;
out_err:
crypto_free_hash(hmac);
kzfree(desc);
crypto_free_shash(hmac);
dprintk("%s: returning %d\n", __func__, err);
return err;
}
@ -914,12 +993,11 @@ out_err:
* Set the key of cipher kctx->enc.
*/
int
krb5_rc4_setup_enc_key(struct krb5_ctx *kctx, struct crypto_blkcipher *cipher,
krb5_rc4_setup_enc_key(struct krb5_ctx *kctx, struct crypto_skcipher *cipher,
s32 seqnum)
{
struct crypto_hash *hmac;
struct hash_desc desc;
struct scatterlist sg[1];
struct crypto_shash *hmac;
struct shash_desc *desc;
u8 Kcrypt[GSS_KRB5_MAX_KEYLEN];
u8 zeroconstant[4] = {0};
u8 seqnumarray[4];
@ -927,35 +1005,38 @@ krb5_rc4_setup_enc_key(struct krb5_ctx *kctx, struct crypto_blkcipher *cipher,
dprintk("%s: entered, seqnum %u\n", __func__, seqnum);
hmac = crypto_alloc_hash(kctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
hmac = crypto_alloc_shash(kctx->gk5e->cksum_name, 0, 0);
if (IS_ERR(hmac)) {
dprintk("%s: error %ld, allocating hash '%s'\n",
__func__, PTR_ERR(hmac), kctx->gk5e->cksum_name);
return PTR_ERR(hmac);
}
desc.tfm = hmac;
desc.flags = 0;
desc = kmalloc(sizeof(*desc), GFP_KERNEL);
if (!desc) {
dprintk("%s: failed to allocate shash descriptor for '%s'\n",
__func__, kctx->gk5e->cksum_name);
crypto_free_shash(hmac);
return -ENOMEM;
}
err = crypto_hash_init(&desc);
if (err)
goto out_err;
desc->tfm = hmac;
desc->flags = 0;
/* Compute intermediate Kcrypt from session key */
for (i = 0; i < kctx->gk5e->keylength; i++)
Kcrypt[i] = kctx->Ksess[i] ^ 0xf0;
err = crypto_hash_setkey(hmac, Kcrypt, kctx->gk5e->keylength);
err = crypto_shash_setkey(hmac, Kcrypt, kctx->gk5e->keylength);
if (err)
goto out_err;
sg_init_one(sg, zeroconstant, 4);
err = crypto_hash_digest(&desc, sg, 4, Kcrypt);
err = crypto_shash_digest(desc, zeroconstant, 4, Kcrypt);
if (err)
goto out_err;
/* Compute final Kcrypt from the seqnum and intermediate Kcrypt */
err = crypto_hash_setkey(hmac, Kcrypt, kctx->gk5e->keylength);
err = crypto_shash_setkey(hmac, Kcrypt, kctx->gk5e->keylength);
if (err)
goto out_err;
@ -964,20 +1045,19 @@ krb5_rc4_setup_enc_key(struct krb5_ctx *kctx, struct crypto_blkcipher *cipher,
seqnumarray[2] = (unsigned char) ((seqnum >> 8) & 0xff);
seqnumarray[3] = (unsigned char) ((seqnum >> 0) & 0xff);
sg_set_buf(sg, seqnumarray, 4);
err = crypto_hash_digest(&desc, sg, 4, Kcrypt);
err = crypto_shash_digest(desc, seqnumarray, 4, Kcrypt);
if (err)
goto out_err;
err = crypto_blkcipher_setkey(cipher, Kcrypt, kctx->gk5e->keylength);
err = crypto_skcipher_setkey(cipher, Kcrypt, kctx->gk5e->keylength);
if (err)
goto out_err;
err = 0;
out_err:
crypto_free_hash(hmac);
kzfree(desc);
crypto_free_shash(hmac);
dprintk("%s: returning %d\n", __func__, err);
return err;
}

12
net/sunrpc/auth_gss/gss_krb5_keys.c
View File

@ -54,9 +54,9 @@
* WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
*/
#include <crypto/skcipher.h>
#include <linux/err.h>
#include <linux/types.h>
#include <linux/crypto.h>
#include <linux/sunrpc/gss_krb5.h>
#include <linux/sunrpc/xdr.h>
#include <linux/lcm.h>
@ -147,7 +147,7 @@ u32 krb5_derive_key(const struct gss_krb5_enctype *gk5e,
size_t blocksize, keybytes, keylength, n;
unsigned char *inblockdata, *outblockdata, *rawkey;
struct xdr_netobj inblock, outblock;
struct crypto_blkcipher *cipher;
struct crypto_skcipher *cipher;
u32 ret = EINVAL;
blocksize = gk5e->blocksize;
@ -157,11 +157,11 @@ u32 krb5_derive_key(const struct gss_krb5_enctype *gk5e,
if ((inkey->len != keylength) || (outkey->len != keylength))
goto err_return;
cipher = crypto_alloc_blkcipher(gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
cipher = crypto_alloc_skcipher(gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(cipher))
goto err_return;
if (crypto_blkcipher_setkey(cipher, inkey->data, inkey->len))
if (crypto_skcipher_setkey(cipher, inkey->data, inkey->len))
goto err_return;
/* allocate and set up buffers */
@ -238,7 +238,7 @@ err_free_in:
memset(inblockdata, 0, blocksize);
kfree(inblockdata);
err_free_cipher:
crypto_free_blkcipher(cipher);
crypto_free_skcipher(cipher);
err_return:
return ret;
}

89
net/sunrpc/auth_gss/gss_krb5_mech.c
View File

@ -34,6 +34,8 @@
*
*/
#include <crypto/hash.h>
#include <crypto/skcipher.h>
#include <linux/err.h>
#include <linux/module.h>
#include <linux/init.h>
@ -42,7 +44,6 @@
#include <linux/sunrpc/auth.h>
#include <linux/sunrpc/gss_krb5.h>
#include <linux/sunrpc/xdr.h>
#include <linux/crypto.h>
#include <linux/sunrpc/gss_krb5_enctypes.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
@ -217,7 +218,7 @@ simple_get_netobj(const void *p, const void *end, struct xdr_netobj *res)
static inline const void *
get_key(const void *p, const void *end,
struct krb5_ctx *ctx, struct crypto_blkcipher **res)
struct krb5_ctx *ctx, struct crypto_skcipher **res)
{
struct xdr_netobj key;
int alg;
@ -245,7 +246,7 @@ get_key(const void *p, const void *end,
if (IS_ERR(p))
goto out_err;
*res = crypto_alloc_blkcipher(ctx->gk5e->encrypt_name, 0,
*res = crypto_alloc_skcipher(ctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(*res)) {
printk(KERN_WARNING "gss_kerberos_mech: unable to initialize "
@ -253,7 +254,7 @@ get_key(const void *p, const void *end,
*res = NULL;
goto out_err_free_key;
}
if (crypto_blkcipher_setkey(*res, key.data, key.len)) {
if (crypto_skcipher_setkey(*res, key.data, key.len)) {
printk(KERN_WARNING "gss_kerberos_mech: error setting key for "
"crypto algorithm %s\n", ctx->gk5e->encrypt_name);
goto out_err_free_tfm;
@ -263,7 +264,7 @@ get_key(const void *p, const void *end,
return p;
out_err_free_tfm:
crypto_free_blkcipher(*res);
crypto_free_skcipher(*res);
out_err_free_key:
kfree(key.data);
p = ERR_PTR(-EINVAL);
@ -335,30 +336,30 @@ gss_import_v1_context(const void *p, const void *end, struct krb5_ctx *ctx)
return 0;
out_err_free_key2:
crypto_free_blkcipher(ctx->seq);
crypto_free_skcipher(ctx->seq);
out_err_free_key1:
crypto_free_blkcipher(ctx->enc);
crypto_free_skcipher(ctx->enc);
out_err_free_mech:
kfree(ctx->mech_used.data);
out_err:
return PTR_ERR(p);
}
static struct crypto_blkcipher *
static struct crypto_skcipher *
context_v2_alloc_cipher(struct krb5_ctx *ctx, const char *cname, u8 *key)
{
struct crypto_blkcipher *cp;
struct crypto_skcipher *cp;
cp = crypto_alloc_blkcipher(cname, 0, CRYPTO_ALG_ASYNC);
cp = crypto_alloc_skcipher(cname, 0, CRYPTO_ALG_ASYNC);
if (IS_ERR(cp)) {
dprintk("gss_kerberos_mech: unable to initialize "
"crypto algorithm %s\n", cname);
return NULL;
}
if (crypto_blkcipher_setkey(cp, key, ctx->gk5e->keylength)) {
if (crypto_skcipher_setkey(cp, key, ctx->gk5e->keylength)) {
dprintk("gss_kerberos_mech: error setting key for "
"crypto algorithm %s\n", cname);
crypto_free_blkcipher(cp);
crypto_free_skcipher(cp);
return NULL;
}
return cp;
@ -412,9 +413,9 @@ context_derive_keys_des3(struct krb5_ctx *ctx, gfp_t gfp_mask)
return 0;
out_free_enc:
crypto_free_blkcipher(ctx->enc);
crypto_free_skcipher(ctx->enc);
out_free_seq:
crypto_free_blkcipher(ctx->seq);
crypto_free_skcipher(ctx->seq);
out_err:
return -EINVAL;
}
@ -427,18 +428,17 @@ out_err:
static int
context_derive_keys_rc4(struct krb5_ctx *ctx)
{
struct crypto_hash *hmac;
struct crypto_shash *hmac;
char sigkeyconstant[] = "signaturekey";
int slen = strlen(sigkeyconstant) + 1; /* include null terminator */
struct hash_desc desc;
struct scatterlist sg[1];
struct shash_desc *desc;
int err;
dprintk("RPC: %s: entered\n", __func__);
/*
* derive cksum (aka Ksign) key
*/
hmac = crypto_alloc_hash(ctx->gk5e->cksum_name, 0, CRYPTO_ALG_ASYNC);
hmac = crypto_alloc_shash(ctx->gk5e->cksum_name, 0, 0);
if (IS_ERR(hmac)) {
dprintk("%s: error %ld allocating hash '%s'\n",
__func__, PTR_ERR(hmac), ctx->gk5e->cksum_name);
@ -446,37 +446,40 @@ context_derive_keys_rc4(struct krb5_ctx *ctx)
goto out_err;
}
err = crypto_hash_setkey(hmac, ctx->Ksess, ctx->gk5e->keylength);
err = crypto_shash_setkey(hmac, ctx->Ksess, ctx->gk5e->keylength);
if (err)
goto out_err_free_hmac;
sg_init_table(sg, 1);
sg_set_buf(sg, sigkeyconstant, slen);
desc.tfm = hmac;
desc.flags = 0;
err = crypto_hash_init(&desc);
if (err)
desc = kmalloc(sizeof(*desc), GFP_KERNEL);
if (!desc) {
dprintk("%s: failed to allocate hash descriptor for '%s'\n",
__func__, ctx->gk5e->cksum_name);
err = -ENOMEM;
goto out_err_free_hmac;
}
err = crypto_hash_digest(&desc, sg, slen, ctx->cksum);
desc->tfm = hmac;
desc->flags = 0;
err = crypto_shash_digest(desc, sigkeyconstant, slen, ctx->cksum);
kzfree(desc);
if (err)
goto out_err_free_hmac;
/*
* allocate hash, and blkciphers for data and seqnum encryption
* allocate hash, and skciphers for data and seqnum encryption
*/
ctx->enc = crypto_alloc_blkcipher(ctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
ctx->enc = crypto_alloc_skcipher(ctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(ctx->enc)) {
err = PTR_ERR(ctx->enc);
goto out_err_free_hmac;
}
ctx->seq = crypto_alloc_blkcipher(ctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
ctx->seq = crypto_alloc_skcipher(ctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(ctx->seq)) {
crypto_free_blkcipher(ctx->enc);
crypto_free_skcipher(ctx->enc);
err = PTR_ERR(ctx->seq);
goto out_err_free_hmac;
}
@ -486,7 +489,7 @@ context_derive_keys_rc4(struct krb5_ctx *ctx)
err = 0;
out_err_free_hmac:
crypto_free_hash(hmac);
crypto_free_shash(hmac);
out_err:
dprintk("RPC: %s: returning %d\n", __func__, err);
return err;
@ -588,7 +591,7 @@ context_derive_keys_new(struct krb5_ctx *ctx, gfp_t gfp_mask)
context_v2_alloc_cipher(ctx, "cbc(aes)",
ctx->acceptor_seal);
if (ctx->acceptor_enc_aux == NULL) {
crypto_free_blkcipher(ctx->initiator_enc_aux);
crypto_free_skcipher(ctx->initiator_enc_aux);
goto out_free_acceptor_enc;
}
}
@ -596,9 +599,9 @@ context_derive_keys_new(struct krb5_ctx *ctx, gfp_t gfp_mask)
return 0;
out_free_acceptor_enc:
crypto_free_blkcipher(ctx->acceptor_enc);
crypto_free_skcipher(ctx->acceptor_enc);
out_free_initiator_enc:
crypto_free_blkcipher(ctx->initiator_enc);
crypto_free_skcipher(ctx->initiator_enc);
out_err:
return -EINVAL;
}
@ -710,12 +713,12 @@ static void
gss_delete_sec_context_kerberos(void *internal_ctx) {
struct krb5_ctx *kctx = internal_ctx;
crypto_free_blkcipher(kctx->seq);
crypto_free_blkcipher(kctx->enc);
crypto_free_blkcipher(kctx->acceptor_enc);
crypto_free_blkcipher(kctx->initiator_enc);
crypto_free_blkcipher(kctx->acceptor_enc_aux);
crypto_free_blkcipher(kctx->initiator_enc_aux);
crypto_free_skcipher(kctx->seq);
crypto_free_skcipher(kctx->enc);
crypto_free_skcipher(kctx->acceptor_enc);
crypto_free_skcipher(kctx->initiator_enc);
crypto_free_skcipher(kctx->acceptor_enc_aux);
crypto_free_skcipher(kctx->initiator_enc_aux);
kfree(kctx->mech_used.data);
kfree(kctx);
}

22
net/sunrpc/auth_gss/gss_krb5_seqnum.c
View File

@ -31,9 +31,9 @@
* PERFORMANCE OF THIS SOFTWARE.
*/
#include <crypto/skcipher.h>
#include <linux/types.h>
#include <linux/sunrpc/gss_krb5.h>
#include <linux/crypto.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_AUTH
@ -43,13 +43,13 @@ static s32
krb5_make_rc4_seq_num(struct krb5_ctx *kctx, int direction, s32 seqnum,
unsigned char *cksum, unsigned char *buf)
{
struct crypto_blkcipher *cipher;
struct crypto_skcipher *cipher;
unsigned char plain[8];
s32 code;
dprintk("RPC: %s:\n", __func__);
cipher = crypto_alloc_blkcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
cipher = crypto_alloc_skcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
@ -68,12 +68,12 @@ krb5_make_rc4_seq_num(struct krb5_ctx *kctx, int direction, s32 seqnum,
code = krb5_encrypt(cipher, cksum, plain, buf, 8);
out:
crypto_free_blkcipher(cipher);
crypto_free_skcipher(cipher);
return code;
}
s32
krb5_make_seq_num(struct krb5_ctx *kctx,
struct crypto_blkcipher *key,
struct crypto_skcipher *key,
int direction,
u32 seqnum,
unsigned char *cksum, unsigned char *buf)
@ -101,13 +101,13 @@ static s32
krb5_get_rc4_seq_num(struct krb5_ctx *kctx, unsigned char *cksum,
unsigned char *buf, int *direction, s32 *seqnum)
{
struct crypto_blkcipher *cipher;
struct crypto_skcipher *cipher;
unsigned char plain[8];
s32 code;
dprintk("RPC: %s:\n", __func__);
cipher = crypto_alloc_blkcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
cipher = crypto_alloc_skcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(cipher))
return PTR_ERR(cipher);
@ -130,7 +130,7 @@ krb5_get_rc4_seq_num(struct krb5_ctx *kctx, unsigned char *cksum,
*seqnum = ((plain[0] << 24) | (plain[1] << 16) |
(plain[2] << 8) | (plain[3]));
out:
crypto_free_blkcipher(cipher);
crypto_free_skcipher(cipher);
return code;
}
@ -142,7 +142,7 @@ krb5_get_seq_num(struct krb5_ctx *kctx,
{
s32 code;
unsigned char plain[8];
struct crypto_blkcipher *key = kctx->seq;
struct crypto_skcipher *key = kctx->seq;
dprintk("RPC: krb5_get_seq_num:\n");

24
net/sunrpc/auth_gss/gss_krb5_wrap.c
View File

@ -28,12 +28,12 @@
* SUCH DAMAGES.
*/
#include <crypto/skcipher.h>
#include <linux/types.h>
#include <linux/jiffies.h>
#include <linux/sunrpc/gss_krb5.h>
#include <linux/random.h>
#include <linux/pagemap.h>
#include <linux/crypto.h>
#if IS_ENABLED(CONFIG_SUNRPC_DEBUG)
# define RPCDBG_FACILITY RPCDBG_AUTH
@ -174,7 +174,7 @@ gss_wrap_kerberos_v1(struct krb5_ctx *kctx, int offset,
now = get_seconds();
blocksize = crypto_blkcipher_blocksize(kctx->enc);
blocksize = crypto_skcipher_blocksize(kctx->enc);
gss_krb5_add_padding(buf, offset, blocksize);
BUG_ON((buf->len - offset) % blocksize);
plainlen = conflen + buf->len - offset;
@ -239,10 +239,10 @@ gss_wrap_kerberos_v1(struct krb5_ctx *kctx, int offset,
return GSS_S_FAILURE;
if (kctx->enctype == ENCTYPE_ARCFOUR_HMAC) {
struct crypto_blkcipher *cipher;
struct crypto_skcipher *cipher;
int err;
cipher = crypto_alloc_blkcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
cipher = crypto_alloc_skcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(cipher))
return GSS_S_FAILURE;
@ -250,7 +250,7 @@ gss_wrap_kerberos_v1(struct krb5_ctx *kctx, int offset,
err = gss_encrypt_xdr_buf(cipher, buf,
offset + headlen - conflen, pages);
crypto_free_blkcipher(cipher);
crypto_free_skcipher(cipher);
if (err)
return GSS_S_FAILURE;
} else {
@ -327,18 +327,18 @@ gss_unwrap_kerberos_v1(struct krb5_ctx *kctx, int offset, struct xdr_buf *buf)
return GSS_S_BAD_SIG;
if (kctx->enctype == ENCTYPE_ARCFOUR_HMAC) {
struct crypto_blkcipher *cipher;
struct crypto_skcipher *cipher;
int err;
cipher = crypto_alloc_blkcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
cipher = crypto_alloc_skcipher(kctx->gk5e->encrypt_name, 0,
CRYPTO_ALG_ASYNC);
if (IS_ERR(cipher))
return GSS_S_FAILURE;
krb5_rc4_setup_enc_key(kctx, cipher, seqnum);
err = gss_decrypt_xdr_buf(cipher, buf, crypt_offset);
crypto_free_blkcipher(cipher);
crypto_free_skcipher(cipher);
if (err)
return GSS_S_DEFECTIVE_TOKEN;
} else {
@ -371,7 +371,7 @@ gss_unwrap_kerberos_v1(struct krb5_ctx *kctx, int offset, struct xdr_buf *buf)
/* Copy the data back to the right position. XXX: Would probably be
* better to copy and encrypt at the same time. */
blocksize = crypto_blkcipher_blocksize(kctx->enc);
blocksize = crypto_skcipher_blocksize(kctx->enc);
data_start = ptr + (GSS_KRB5_TOK_HDR_LEN + kctx->gk5e->cksumlength) +
conflen;
orig_start = buf->head[0].iov_base + offset;
@ -473,7 +473,7 @@ gss_wrap_kerberos_v2(struct krb5_ctx *kctx, u32 offset,
*ptr++ = 0xff;
be16ptr = (__be16 *)ptr;
blocksize = crypto_blkcipher_blocksize(kctx->acceptor_enc);
blocksize = crypto_skcipher_blocksize(kctx->acceptor_enc);
*be16ptr++ = 0;
/* "inner" token header always uses 0 for RRC */
*be16ptr++ = 0;