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Merge git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6

Browse Source 
Pull crypto fixes from Herbert Xu:
 "This push fixes a number of crashes triggered by a previous crypto
  self-test update.  It also fixes a build problem in the caam driver,
  as well as a concurrency issue in s390.

  Finally there is a pair of fixes to bugs in the crypto scatterwalk
  code and authenc that may lead to crashes"

* git://git.kernel.org/pub/scm/linux/kernel/git/herbert/crypto-2.6:
  crypto: testmgr - fix sglen in test_aead for case 'dst != src'
  crypto: talitos - fix aead sglen for case 'dst != src'
  crypto: caam - fix aead sglen for case 'dst != src'
  crypto: ccm - Fix handling of zero plaintext when computing mac
  crypto: s390 - Fix aes-xts parameter corruption
  crypto: talitos - corrrectly handle zero-length assoc data
  crypto: scatterwalk - Set the chain pointer indication bit
  crypto: authenc - Find proper IV address in ablkcipher callback
  crypto: caam - Add missing Job Ring include
This commit is contained in:
Linus Torvalds 2013-12-04 08:53:09 -08:00
commit d644c026e6
9 changed files with 109 additions and 83 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

31
arch/s390/crypto/aes_s390.c
View File

@ -55,8 +55,7 @@ struct pcc_param {
struct s390_xts_ctx {
u8 key[32];
u8 xts_param[16];
struct pcc_param pcc;
u8 pcc_key[32];
long enc;
long dec;
int key_len;
@ -591,7 +590,7 @@ static int xts_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
xts_ctx->enc = KM_XTS_128_ENCRYPT;
xts_ctx->dec = KM_XTS_128_DECRYPT;
memcpy(xts_ctx->key + 16, in_key, 16);
memcpy(xts_ctx->pcc.key + 16, in_key + 16, 16);
memcpy(xts_ctx->pcc_key + 16, in_key + 16, 16);
break;
case 48:
xts_ctx->enc = 0;
@ -602,7 +601,7 @@ static int xts_aes_set_key(struct crypto_tfm *tfm, const u8 *in_key,
xts_ctx->enc = KM_XTS_256_ENCRYPT;
xts_ctx->dec = KM_XTS_256_DECRYPT;
memcpy(xts_ctx->key, in_key, 32);
memcpy(xts_ctx->pcc.key, in_key + 32, 32);
memcpy(xts_ctx->pcc_key, in_key + 32, 32);
break;
default:
*flags |= CRYPTO_TFM_RES_BAD_KEY_LEN;
@ -621,29 +620,33 @@ static int xts_aes_crypt(struct blkcipher_desc *desc, long func,
unsigned int nbytes = walk->nbytes;
unsigned int n;
u8 *in, *out;
void *param;
struct pcc_param pcc_param;
struct {
u8 key[32];
u8 init[16];
} xts_param;
if (!nbytes)
goto out;
memset(xts_ctx->pcc.block, 0, sizeof(xts_ctx->pcc.block));
memset(xts_ctx->pcc.bit, 0, sizeof(xts_ctx->pcc.bit));
memset(xts_ctx->pcc.xts, 0, sizeof(xts_ctx->pcc.xts));
memcpy(xts_ctx->pcc.tweak, walk->iv, sizeof(xts_ctx->pcc.tweak));
param = xts_ctx->pcc.key + offset;
ret = crypt_s390_pcc(func, param);
memset(pcc_param.block, 0, sizeof(pcc_param.block));
memset(pcc_param.bit, 0, sizeof(pcc_param.bit));
memset(pcc_param.xts, 0, sizeof(pcc_param.xts));
memcpy(pcc_param.tweak, walk->iv, sizeof(pcc_param.tweak));
memcpy(pcc_param.key, xts_ctx->pcc_key, 32);
ret = crypt_s390_pcc(func, &pcc_param.key[offset]);
if (ret < 0)
return -EIO;
memcpy(xts_ctx->xts_param, xts_ctx->pcc.xts, 16);
param = xts_ctx->key + offset;
memcpy(xts_param.key, xts_ctx->key, 32);
memcpy(xts_param.init, pcc_param.xts, 16);
do {
/* only use complete blocks */
n = nbytes & ~(AES_BLOCK_SIZE - 1);
out = walk->dst.virt.addr;
in = walk->src.virt.addr;
ret = crypt_s390_km(func, param, out, in, n);
ret = crypt_s390_km(func, &xts_param.key[offset], out, in, n);
if (ret < 0 || ret != n)
return -EIO;

7
crypto/authenc.c
View File

@ -380,9 +380,10 @@ static void crypto_authenc_encrypt_done(struct crypto_async_request *req,
if (!err) {
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct crypto_authenc_ctx *ctx = crypto_aead_ctx(authenc);
struct ablkcipher_request *abreq = aead_request_ctx(areq);
u8 *iv = (u8 *)(abreq + 1) +
crypto_ablkcipher_reqsize(ctx->enc);
struct authenc_request_ctx *areq_ctx = aead_request_ctx(areq);
struct ablkcipher_request *abreq = (void *)(areq_ctx->tail
+ ctx->reqoff);
u8 *iv = (u8 *)abreq - crypto_ablkcipher_ivsize(ctx->enc);
err = crypto_authenc_genicv(areq, iv, 0);
}

3
crypto/ccm.c
View File

@ -271,7 +271,8 @@ static int crypto_ccm_auth(struct aead_request *req, struct scatterlist *plain,
}
/* compute plaintext into mac */
get_data_to_compute(cipher, pctx, plain, cryptlen);
if (cryptlen)
get_data_to_compute(cipher, pctx, plain, cryptlen);
out:
return err;

4
crypto/tcrypt.c
View File

@ -1242,6 +1242,10 @@ static int do_test(int m)
ret += tcrypt_test("cmac(des3_ede)");
break;
case 155:
ret += tcrypt_test("authenc(hmac(sha1),cbc(aes))");
break;
case 200:
test_cipher_speed("ecb(aes)", ENCRYPT, sec, NULL, 0,
speed_template_16_24_32);

26
crypto/testmgr.c
View File

@ -503,16 +503,16 @@ static int __test_aead(struct crypto_aead *tfm, int enc,
goto out;
}
sg_init_one(&sg[0], input,
template[i].ilen + (enc ? authsize : 0));
if (diff_dst) {
output = xoutbuf[0];
output += align_offset;
sg_init_one(&sg[0], input, template[i].ilen);
sg_init_one(&sgout[0], output,
template[i].rlen);
} else {
sg_init_one(&sg[0], input,
template[i].ilen +
(enc ? authsize : 0));
} else {
output = input;
}
@ -612,12 +612,6 @@ static int __test_aead(struct crypto_aead *tfm, int enc,
memcpy(q, template[i].input + temp,
template[i].tap[k]);
n = template[i].tap[k];
if (k == template[i].np - 1 && enc)
n += authsize;
if (offset_in_page(q) + n < PAGE_SIZE)
q[n] = 0;
sg_set_buf(&sg[k], q, template[i].tap[k]);
if (diff_dst) {
@ -625,13 +619,17 @@ static int __test_aead(struct crypto_aead *tfm, int enc,
offset_in_page(IDX[k]);
memset(q, 0, template[i].tap[k]);
if (offset_in_page(q) + n < PAGE_SIZE)
q[n] = 0;
sg_set_buf(&sgout[k], q,
template[i].tap[k]);
}
n = template[i].tap[k];
if (k == template[i].np - 1 && enc)
n += authsize;
if (offset_in_page(q) + n < PAGE_SIZE)
q[n] = 0;
temp += template[i].tap[k];
}
@ -650,10 +648,10 @@ static int __test_aead(struct crypto_aead *tfm, int enc,
goto out;
}
sg[k - 1].length += authsize;
if (diff_dst)
sgout[k - 1].length += authsize;
else
sg[k - 1].length += authsize;
}
sg_init_table(asg, template[i].anp);

51
drivers/crypto/caam/caamalg.c
View File

@ -818,7 +818,7 @@ static void aead_decrypt_done(struct device *jrdev, u32 *desc, u32 err,
ivsize, 1);
print_hex_dump(KERN_ERR, "dst @"__stringify(__LINE__)": ",
DUMP_PREFIX_ADDRESS, 16, 4, sg_virt(req->dst),
req->cryptlen, 1);
req->cryptlen - ctx->authsize, 1);
#endif
if (err) {
@ -972,12 +972,9 @@ static void init_aead_job(u32 *sh_desc, dma_addr_t ptr,
(edesc->src_nents ? : 1);
in_options = LDST_SGF;
}
if (encrypt)
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize +
req->cryptlen - authsize, in_options);
else
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize +
req->cryptlen, in_options);
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize + req->cryptlen,
in_options);
if (likely(req->src == req->dst)) {
if (all_contig) {
@ -998,7 +995,8 @@ static void init_aead_job(u32 *sh_desc, dma_addr_t ptr,
}
}
if (encrypt)
append_seq_out_ptr(desc, dst_dma, req->cryptlen, out_options);
append_seq_out_ptr(desc, dst_dma, req->cryptlen + authsize,
out_options);
else
append_seq_out_ptr(desc, dst_dma, req->cryptlen - authsize,
out_options);
@ -1048,8 +1046,8 @@ static void init_aead_giv_job(u32 *sh_desc, dma_addr_t ptr,
sec4_sg_index += edesc->assoc_nents + 1 + edesc->src_nents;
in_options = LDST_SGF;
}
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize +
req->cryptlen - authsize, in_options);
append_seq_in_ptr(desc, src_dma, req->assoclen + ivsize + req->cryptlen,
in_options);
if (contig & GIV_DST_CONTIG) {
dst_dma = edesc->iv_dma;
@ -1066,7 +1064,8 @@ static void init_aead_giv_job(u32 *sh_desc, dma_addr_t ptr,
}
}
append_seq_out_ptr(desc, dst_dma, ivsize + req->cryptlen, out_options);
append_seq_out_ptr(desc, dst_dma, ivsize + req->cryptlen + authsize,
out_options);
}
/*
@ -1130,7 +1129,8 @@ static void init_ablkcipher_job(u32 *sh_desc, dma_addr_t ptr,
* allocate and map the aead extended descriptor
*/
static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
int desc_bytes, bool *all_contig_ptr)
int desc_bytes, bool *all_contig_ptr,
bool encrypt)
{
struct crypto_aead *aead = crypto_aead_reqtfm(req);
struct caam_ctx *ctx = crypto_aead_ctx(aead);
@ -1145,12 +1145,22 @@ static struct aead_edesc *aead_edesc_alloc(struct aead_request *req,
bool assoc_chained = false, src_chained = false, dst_chained = false;
int ivsize = crypto_aead_ivsize(aead);
int sec4_sg_index, sec4_sg_len = 0, sec4_sg_bytes;
unsigned int authsize = ctx->authsize;
assoc_nents = sg_count(req->assoc, req->assoclen, &assoc_chained);
src_nents = sg_count(req->src, req->cryptlen, &src_chained);
if (unlikely(req->dst != req->src))
dst_nents = sg_count(req->dst, req->cryptlen, &dst_chained);
if (unlikely(req->dst != req->src)) {
src_nents = sg_count(req->src, req->cryptlen, &src_chained);
dst_nents = sg_count(req->dst,
req->cryptlen +
(encrypt ? authsize : (-authsize)),
&dst_chained);
} else {
src_nents = sg_count(req->src,
req->cryptlen +
(encrypt ? authsize : 0),
&src_chained);
}
sgc = dma_map_sg_chained(jrdev, req->assoc, assoc_nents ? : 1,
DMA_TO_DEVICE, assoc_chained);
@ -1234,11 +1244,9 @@ static int aead_encrypt(struct aead_request *req)
u32 *desc;
int ret = 0;
req->cryptlen += ctx->authsize;
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, DESC_JOB_IO_LEN *
CAAM_CMD_SZ, &all_contig);
CAAM_CMD_SZ, &all_contig, true);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1275,7 +1283,7 @@ static int aead_decrypt(struct aead_request *req)
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, DESC_JOB_IO_LEN *
CAAM_CMD_SZ, &all_contig);
CAAM_CMD_SZ, &all_contig, false);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1332,7 +1340,8 @@ static struct aead_edesc *aead_giv_edesc_alloc(struct aead_givcrypt_request
src_nents = sg_count(req->src, req->cryptlen, &src_chained);
if (unlikely(req->dst != req->src))
dst_nents = sg_count(req->dst, req->cryptlen, &dst_chained);
dst_nents = sg_count(req->dst, req->cryptlen + ctx->authsize,
&dst_chained);
sgc = dma_map_sg_chained(jrdev, req->assoc, assoc_nents ? : 1,
DMA_TO_DEVICE, assoc_chained);
@ -1426,8 +1435,6 @@ static int aead_givencrypt(struct aead_givcrypt_request *areq)
u32 *desc;
int ret = 0;
req->cryptlen += ctx->authsize;
/* allocate extended descriptor */
edesc = aead_giv_edesc_alloc(areq, DESC_JOB_IO_LEN *
CAAM_CMD_SZ, &contig);

1
drivers/crypto/caam/jr.c
View File

@ -6,6 +6,7 @@
*/
#include <linux/of_irq.h>
#include <linux/of_address.h>
#include "compat.h"
#include "regs.h"

68
drivers/crypto/talitos.c
View File

@ -790,7 +790,7 @@ static void ipsec_esp_unmap(struct device *dev,
if (edesc->assoc_chained)
talitos_unmap_sg_chain(dev, areq->assoc, DMA_TO_DEVICE);
else
else if (areq->assoclen)
/* assoc_nents counts also for IV in non-contiguous cases */
dma_unmap_sg(dev, areq->assoc,
edesc->assoc_nents ? edesc->assoc_nents - 1 : 1,
@ -973,7 +973,11 @@ static int ipsec_esp(struct talitos_edesc *edesc, struct aead_request *areq,
dma_sync_single_for_device(dev, edesc->dma_link_tbl,
edesc->dma_len, DMA_BIDIRECTIONAL);
} else {
to_talitos_ptr(&desc->ptr[1], sg_dma_address(areq->assoc));
if (areq->assoclen)
to_talitos_ptr(&desc->ptr[1],
sg_dma_address(areq->assoc));
else
to_talitos_ptr(&desc->ptr[1], edesc->iv_dma);
desc->ptr[1].j_extent = 0;
}
@ -1108,7 +1112,8 @@ static struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
unsigned int authsize,
unsigned int ivsize,
int icv_stashing,
u32 cryptoflags)
u32 cryptoflags,
bool encrypt)
{
struct talitos_edesc *edesc;
int assoc_nents = 0, src_nents, dst_nents, alloc_len, dma_len;
@ -1122,10 +1127,10 @@ static struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
return ERR_PTR(-EINVAL);
}
if (iv)
if (ivsize)
iv_dma = dma_map_single(dev, iv, ivsize, DMA_TO_DEVICE);
if (assoc) {
if (assoclen) {
/*
* Currently it is assumed that iv is provided whenever assoc
* is.
@ -1141,19 +1146,17 @@ static struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
assoc_nents = assoc_nents ? assoc_nents + 1 : 2;
}
src_nents = sg_count(src, cryptlen + authsize, &src_chained);
src_nents = (src_nents == 1) ? 0 : src_nents;
if (!dst) {
dst_nents = 0;
} else {
if (dst == src) {
dst_nents = src_nents;
} else {
dst_nents = sg_count(dst, cryptlen + authsize,
&dst_chained);
dst_nents = (dst_nents == 1) ? 0 : dst_nents;
}
if (!dst || dst == src) {
src_nents = sg_count(src, cryptlen + authsize, &src_chained);
src_nents = (src_nents == 1) ? 0 : src_nents;
dst_nents = dst ? src_nents : 0;
} else { /* dst && dst != src*/
src_nents = sg_count(src, cryptlen + (encrypt ? 0 : authsize),
&src_chained);
src_nents = (src_nents == 1) ? 0 : src_nents;
dst_nents = sg_count(dst, cryptlen + (encrypt ? authsize : 0),
&dst_chained);
dst_nents = (dst_nents == 1) ? 0 : dst_nents;
}
/*
@ -1173,9 +1176,16 @@ static struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
edesc = kmalloc(alloc_len, GFP_DMA | flags);
if (!edesc) {
talitos_unmap_sg_chain(dev, assoc, DMA_TO_DEVICE);
if (assoc_chained)
talitos_unmap_sg_chain(dev, assoc, DMA_TO_DEVICE);
else if (assoclen)
dma_unmap_sg(dev, assoc,
assoc_nents ? assoc_nents - 1 : 1,
DMA_TO_DEVICE);
if (iv_dma)
dma_unmap_single(dev, iv_dma, ivsize, DMA_TO_DEVICE);
dev_err(dev, "could not allocate edescriptor\n");
return ERR_PTR(-ENOMEM);
}
@ -1197,7 +1207,7 @@ static struct talitos_edesc *talitos_edesc_alloc(struct device *dev,
}
static struct talitos_edesc *aead_edesc_alloc(struct aead_request *areq, u8 *iv,
int icv_stashing)
int icv_stashing, bool encrypt)
{
struct crypto_aead *authenc = crypto_aead_reqtfm(areq);
struct talitos_ctx *ctx = crypto_aead_ctx(authenc);
@ -1206,7 +1216,7 @@ static struct talitos_edesc *aead_edesc_alloc(struct aead_request *areq, u8 *iv,
return talitos_edesc_alloc(ctx->dev, areq->assoc, areq->src, areq->dst,
iv, areq->assoclen, areq->cryptlen,
ctx->authsize, ivsize, icv_stashing,
areq->base.flags);
areq->base.flags, encrypt);
}
static int aead_encrypt(struct aead_request *req)
@ -1216,7 +1226,7 @@ static int aead_encrypt(struct aead_request *req)
struct talitos_edesc *edesc;
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, req->iv, 0);
edesc = aead_edesc_alloc(req, req->iv, 0, true);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1239,7 +1249,7 @@ static int aead_decrypt(struct aead_request *req)
req->cryptlen -= authsize;
/* allocate extended descriptor */
edesc = aead_edesc_alloc(req, req->iv, 1);
edesc = aead_edesc_alloc(req, req->iv, 1, false);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1285,7 +1295,7 @@ static int aead_givencrypt(struct aead_givcrypt_request *req)
struct talitos_edesc *edesc;
/* allocate extended descriptor */
edesc = aead_edesc_alloc(areq, req->giv, 0);
edesc = aead_edesc_alloc(areq, req->giv, 0, true);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1441,7 +1451,7 @@ static int common_nonsnoop(struct talitos_edesc *edesc,
}
static struct talitos_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request *
areq)
areq, bool encrypt)
{
struct crypto_ablkcipher *cipher = crypto_ablkcipher_reqtfm(areq);
struct talitos_ctx *ctx = crypto_ablkcipher_ctx(cipher);
@ -1449,7 +1459,7 @@ static struct talitos_edesc *ablkcipher_edesc_alloc(struct ablkcipher_request *
return talitos_edesc_alloc(ctx->dev, NULL, areq->src, areq->dst,
areq->info, 0, areq->nbytes, 0, ivsize, 0,
areq->base.flags);
areq->base.flags, encrypt);
}
static int ablkcipher_encrypt(struct ablkcipher_request *areq)
@ -1459,7 +1469,7 @@ static int ablkcipher_encrypt(struct ablkcipher_request *areq)
struct talitos_edesc *edesc;
/* allocate extended descriptor */
edesc = ablkcipher_edesc_alloc(areq);
edesc = ablkcipher_edesc_alloc(areq, true);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1476,7 +1486,7 @@ static int ablkcipher_decrypt(struct ablkcipher_request *areq)
struct talitos_edesc *edesc;
/* allocate extended descriptor */
edesc = ablkcipher_edesc_alloc(areq);
edesc = ablkcipher_edesc_alloc(areq, false);
if (IS_ERR(edesc))
return PTR_ERR(edesc);
@ -1628,7 +1638,7 @@ static struct talitos_edesc *ahash_edesc_alloc(struct ahash_request *areq,
struct talitos_ahash_req_ctx *req_ctx = ahash_request_ctx(areq);
return talitos_edesc_alloc(ctx->dev, NULL, req_ctx->psrc, NULL, NULL, 0,
nbytes, 0, 0, 0, areq->base.flags);
nbytes, 0, 0, 0, areq->base.flags, false);
}
static int ahash_init(struct ahash_request *areq)

1
include/crypto/scatterwalk.h
View File

@ -36,6 +36,7 @@ static inline void scatterwalk_sg_chain(struct scatterlist *sg1, int num,
{
sg_set_page(&sg1[num - 1], (void *)sg2, 0, 0);
sg1[num - 1].page_link &= ~0x02;
sg1[num - 1].page_link |= 0x01;
}
static inline struct scatterlist *scatterwalk_sg_next(struct scatterlist *sg)