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crypto: marvell/cesa - add MD5 support 

Add support for MD5 operations.

Signed-off-by: Arnaud Ebalard <arno@natisbad.org>
Signed-off-by: Boris Brezillon <boris.brezillon@free-electrons.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Arnaud Ebalard 2015-06-18 15:46:24 +02:00 committed by Herbert Xu
parent 4ada483978
commit 7aeef693d1
3 changed files with 174 additions and 2 deletions
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2
drivers/crypto/marvell/cesa.c
View File

@ -178,7 +178,9 @@ static struct crypto_alg *armada_370_cipher_algs[] = {
};
static struct ahash_alg *armada_370_ahash_algs[] = {
&mv_md5_alg,
&mv_sha1_alg,
&mv_ahmac_md5_alg,
&mv_ahmac_sha1_alg,
};

2
drivers/crypto/marvell/cesa.h
View File

@ -774,7 +774,9 @@ int mv_cesa_dma_add_op_transfers(struct mv_cesa_tdma_chain *chain,
/* Algorithm definitions */
extern struct ahash_alg mv_md5_alg;
extern struct ahash_alg mv_sha1_alg;
extern struct ahash_alg mv_ahmac_md5_alg;
extern struct ahash_alg mv_ahmac_sha1_alg;
extern struct crypto_alg mv_cesa_ecb_des_alg;

172
drivers/crypto/marvell/hash.c
View File

@ -12,6 +12,7 @@
* by the Free Software Foundation.
*/
#include <crypto/md5.h>
#include <crypto/sha.h>
#include "cesa.h"
@ -346,8 +347,16 @@ static int mv_cesa_ahash_process(struct crypto_async_request *req, u32 status)
ahashreq->nbytes - creq->cache_ptr);
if (creq->last_req) {
for (i = 0; i < digsize / 4; i++)
creq->state[i] = cpu_to_be32(creq->state[i]);
for (i = 0; i < digsize / 4; i++) {
/*
* Hardware provides MD5 digest in a different
* endianness than SHA-1 and SHA-256 ones.
*/
if (digsize == MD5_DIGEST_SIZE)
creq->state[i] = cpu_to_le32(creq->state[i]);
else
creq->state[i] = cpu_to_be32(creq->state[i]);
}
memcpy(ahashreq->result, creq->state, digsize);
}
@ -788,6 +797,95 @@ static int mv_cesa_ahash_finup(struct ahash_request *req)
return ret;
}
static int mv_cesa_md5_init(struct ahash_request *req)
{
struct mv_cesa_op_ctx tmpl;
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_MD5);
mv_cesa_ahash_init(req, &tmpl);
return 0;
}
static int mv_cesa_md5_export(struct ahash_request *req, void *out)
{
struct md5_state *out_state = out;
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
unsigned int digsize = crypto_ahash_digestsize(ahash);
out_state->byte_count = creq->len;
memcpy(out_state->hash, creq->state, digsize);
memset(out_state->block, 0, sizeof(out_state->block));
if (creq->cache)
memcpy(out_state->block, creq->cache, creq->cache_ptr);
return 0;
}
static int mv_cesa_md5_import(struct ahash_request *req, const void *in)
{
const struct md5_state *in_state = in;
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
unsigned int digsize = crypto_ahash_digestsize(ahash);
unsigned int cache_ptr;
int ret;
creq->len = in_state->byte_count;
memcpy(creq->state, in_state->hash, digsize);
creq->cache_ptr = 0;
cache_ptr = creq->len % sizeof(in_state->block);
if (!cache_ptr)
return 0;
ret = mv_cesa_ahash_alloc_cache(req);
if (ret)
return ret;
memcpy(creq->cache, in_state->block, cache_ptr);
creq->cache_ptr = cache_ptr;
return 0;
}
static int mv_cesa_md5_digest(struct ahash_request *req)
{
int ret;
ret = mv_cesa_md5_init(req);
if (ret)
return ret;
return mv_cesa_ahash_finup(req);
}
struct ahash_alg mv_md5_alg = {
.init = mv_cesa_md5_init,
.update = mv_cesa_ahash_update,
.final = mv_cesa_ahash_final,
.finup = mv_cesa_ahash_finup,
.digest = mv_cesa_md5_digest,
.export = mv_cesa_md5_export,
.import = mv_cesa_md5_import,
.halg = {
.digestsize = MD5_DIGEST_SIZE,
.base = {
.cra_name = "md5",
.cra_driver_name = "mv-md5",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
.cra_init = mv_cesa_ahash_cra_init,
.cra_module = THIS_MODULE,
}
}
};
static int mv_cesa_sha1_init(struct ahash_request *req)
{
struct mv_cesa_op_ctx tmpl;
@ -1043,6 +1141,76 @@ static int mv_cesa_ahmac_cra_init(struct crypto_tfm *tfm)
return 0;
}
static int mv_cesa_ahmac_md5_init(struct ahash_request *req)
{
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);
struct mv_cesa_op_ctx tmpl;
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_HMAC_MD5);
memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
mv_cesa_ahash_init(req, &tmpl);
return 0;
}
static int mv_cesa_ahmac_md5_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(crypto_ahash_tfm(tfm));
struct md5_state istate, ostate;
int ret, i;
ret = mv_cesa_ahmac_setkey("mv-md5", key, keylen, &istate, &ostate);
if (ret)
return ret;
for (i = 0; i < ARRAY_SIZE(istate.hash); i++)
ctx->iv[i] = be32_to_cpu(istate.hash[i]);
for (i = 0; i < ARRAY_SIZE(ostate.hash); i++)
ctx->iv[i + 8] = be32_to_cpu(ostate.hash[i]);
return 0;
}
static int mv_cesa_ahmac_md5_digest(struct ahash_request *req)
{
int ret;
ret = mv_cesa_ahmac_md5_init(req);
if (ret)
return ret;
return mv_cesa_ahash_finup(req);
}
struct ahash_alg mv_ahmac_md5_alg = {
.init = mv_cesa_ahmac_md5_init,
.update = mv_cesa_ahash_update,
.final = mv_cesa_ahash_final,
.finup = mv_cesa_ahash_finup,
.digest = mv_cesa_ahmac_md5_digest,
.setkey = mv_cesa_ahmac_md5_setkey,
.export = mv_cesa_md5_export,
.import = mv_cesa_md5_import,
.halg = {
.digestsize = MD5_DIGEST_SIZE,
.statesize = sizeof(struct md5_state),
.base = {
.cra_name = "hmac(md5)",
.cra_driver_name = "mv-hmac-md5",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = MD5_HMAC_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
.cra_init = mv_cesa_ahmac_cra_init,
.cra_module = THIS_MODULE,
}
}
};
static int mv_cesa_ahmac_sha1_init(struct ahash_request *req)
{
struct mv_cesa_hmac_ctx *ctx = crypto_tfm_ctx(req->base.tfm);