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crypto: marvell/cesa - add SHA256 support 

Add support for SHA256 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 15:46:25 +02:00 committed by Herbert Xu
parent 7aeef693d1
commit f85a762e49
3 changed files with 163 additions and 0 deletions
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2
drivers/crypto/marvell/cesa.c
View File

@ -180,8 +180,10 @@ static struct crypto_alg *armada_370_cipher_algs[] = {
static struct ahash_alg *armada_370_ahash_algs[] = {
&mv_md5_alg,
&mv_sha1_alg,
&mv_sha256_alg,
&mv_ahmac_md5_alg,
&mv_ahmac_sha1_alg,
&mv_ahmac_sha256_alg,
};
static const struct mv_cesa_caps armada_370_caps = {

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

@ -776,8 +776,10 @@ int mv_cesa_dma_add_op_transfers(struct mv_cesa_tdma_chain *chain,
extern struct ahash_alg mv_md5_alg;
extern struct ahash_alg mv_sha1_alg;
extern struct ahash_alg mv_sha256_alg;
extern struct ahash_alg mv_ahmac_md5_alg;
extern struct ahash_alg mv_ahmac_sha1_alg;
extern struct ahash_alg mv_ahmac_sha256_alg;
extern struct crypto_alg mv_cesa_ecb_des_alg;
extern struct crypto_alg mv_cesa_cbc_des_alg;

159
drivers/crypto/marvell/hash.c
View File

@ -975,6 +975,95 @@ struct ahash_alg mv_sha1_alg = {
}
};
static int mv_cesa_sha256_init(struct ahash_request *req)
{
struct mv_cesa_op_ctx tmpl;
mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_MACM_SHA256);
mv_cesa_ahash_init(req, &tmpl);
return 0;
}
static int mv_cesa_sha256_digest(struct ahash_request *req)
{
int ret;
ret = mv_cesa_sha256_init(req);
if (ret)
return ret;
return mv_cesa_ahash_finup(req);
}
static int mv_cesa_sha256_export(struct ahash_request *req, void *out)
{
struct sha256_state *out_state = out;
struct crypto_ahash *ahash = crypto_ahash_reqtfm(req);
struct mv_cesa_ahash_req *creq = ahash_request_ctx(req);
unsigned int ds = crypto_ahash_digestsize(ahash);
out_state->count = creq->len;
memcpy(out_state->state, creq->state, ds);
memset(out_state->buf, 0, sizeof(out_state->buf));
if (creq->cache)
memcpy(out_state->buf, creq->cache, creq->cache_ptr);
return 0;
}
static int mv_cesa_sha256_import(struct ahash_request *req, const void *in)
{
const struct sha256_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->count;
memcpy(creq->state, in_state->state, digsize);
creq->cache_ptr = 0;
cache_ptr = creq->len % SHA256_BLOCK_SIZE;
if (!cache_ptr)
return 0;
ret = mv_cesa_ahash_alloc_cache(req);
if (ret)
return ret;
memcpy(creq->cache, in_state->buf, cache_ptr);
creq->cache_ptr = cache_ptr;
return 0;
}
struct ahash_alg mv_sha256_alg = {
.init = mv_cesa_sha256_init,
.update = mv_cesa_ahash_update,
.final = mv_cesa_ahash_final,
.finup = mv_cesa_ahash_finup,
.digest = mv_cesa_sha256_digest,
.export = mv_cesa_sha256_export,
.import = mv_cesa_sha256_import,
.halg = {
.digestsize = SHA256_DIGEST_SIZE,
.base = {
.cra_name = "sha256",
.cra_driver_name = "mv-sha256",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct mv_cesa_hash_ctx),
.cra_init = mv_cesa_ahash_cra_init,
.cra_module = THIS_MODULE,
}
}
};
struct mv_cesa_ahash_result {
struct completion completion;
int error;
@ -1280,3 +1369,73 @@ struct ahash_alg mv_ahmac_sha1_alg = {
}
}
};
static int mv_cesa_ahmac_sha256_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 sha256_state istate, ostate;
int ret, i;
ret = mv_cesa_ahmac_setkey("mv-sha256", key, keylen, &istate, &ostate);
if (ret)
return ret;
for (i = 0; i < ARRAY_SIZE(istate.state); i++)
ctx->iv[i] = be32_to_cpu(istate.state[i]);
for (i = 0; i < ARRAY_SIZE(ostate.state); i++)
ctx->iv[i + 8] = be32_to_cpu(ostate.state[i]);
return 0;
}
static int mv_cesa_ahmac_sha256_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_SHA256);
memcpy(tmpl.ctx.hash.iv, ctx->iv, sizeof(ctx->iv));
mv_cesa_ahash_init(req, &tmpl);
return 0;
}
static int mv_cesa_ahmac_sha256_digest(struct ahash_request *req)
{
int ret;
ret = mv_cesa_ahmac_sha256_init(req);
if (ret)
return ret;
return mv_cesa_ahash_finup(req);
}
struct ahash_alg mv_ahmac_sha256_alg = {
.init = mv_cesa_ahmac_sha256_init,
.update = mv_cesa_ahash_update,
.final = mv_cesa_ahash_final,
.finup = mv_cesa_ahash_finup,
.digest = mv_cesa_ahmac_sha256_digest,
.setkey = mv_cesa_ahmac_sha256_setkey,
.export = mv_cesa_sha256_export,
.import = mv_cesa_sha256_import,
.halg = {
.digestsize = SHA256_DIGEST_SIZE,
.statesize = sizeof(struct sha256_state),
.base = {
.cra_name = "hmac(sha256)",
.cra_driver_name = "mv-hmac-sha256",
.cra_priority = 300,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = SHA256_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct mv_cesa_hmac_ctx),
.cra_init = mv_cesa_ahmac_cra_init,
.cra_module = THIS_MODULE,
}
}
};