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crypto: inside-secure - Added support for HMAC-SM3 ahash

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Added support for the hmac(sm3) ahash authentication algorithm

changes since v1:
- added Acked-by tag below, no changes to the source

changes since v2:
- nothing

Acked-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Pascal van Leeuwen <pvanleeuwen@verimatrix.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
This commit is contained in:
Pascal van Leeuwen 2019-09-13 17:20:37 +02:00 committed by Herbert Xu
parent 0f2bc13181
commit aa3a43e6e4
3 changed files with 72 additions and 0 deletions
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1
drivers/crypto/inside-secure/safexcel.c
View File

@ -1177,6 +1177,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
&safexcel_alg_chachapoly,
&safexcel_alg_chachapoly_esp,
&safexcel_alg_sm3,
&safexcel_alg_hmac_sm3,
};
static int safexcel_register_algorithms(struct safexcel_crypto_priv *priv)

1
drivers/crypto/inside-secure/safexcel.h
View File

@ -877,5 +877,6 @@ extern struct safexcel_alg_template safexcel_alg_chacha20;
extern struct safexcel_alg_template safexcel_alg_chachapoly;
extern struct safexcel_alg_template safexcel_alg_chachapoly_esp;
extern struct safexcel_alg_template safexcel_alg_sm3;
extern struct safexcel_alg_template safexcel_alg_hmac_sm3;
#endif

70
drivers/crypto/inside-secure/safexcel_hash.c
View File

@ -2285,3 +2285,73 @@ struct safexcel_alg_template safexcel_alg_sm3 = {
},
},
};
static int safexcel_hmac_sm3_setkey(struct crypto_ahash *tfm, const u8 *key,
unsigned int keylen)
{
return safexcel_hmac_alg_setkey(tfm, key, keylen, "safexcel-sm3",
SM3_DIGEST_SIZE);
}
static int safexcel_hmac_sm3_init(struct ahash_request *areq)
{
struct safexcel_ahash_ctx *ctx = crypto_ahash_ctx(crypto_ahash_reqtfm(areq));
struct safexcel_ahash_req *req = ahash_request_ctx(areq);
memset(req, 0, sizeof(*req));
/* Start from ipad precompute */
memcpy(req->state, ctx->ipad, SM3_DIGEST_SIZE);
/* Already processed the key^ipad part now! */
req->len = SM3_BLOCK_SIZE;
req->processed = SM3_BLOCK_SIZE;
ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SM3;
req->digest = CONTEXT_CONTROL_DIGEST_PRECOMPUTED;
req->state_sz = SM3_DIGEST_SIZE;
req->block_sz = SM3_BLOCK_SIZE;
req->hmac = true;
return 0;
}
static int safexcel_hmac_sm3_digest(struct ahash_request *areq)
{
int ret = safexcel_hmac_sm3_init(areq);
if (ret)
return ret;
return safexcel_ahash_finup(areq);
}
struct safexcel_alg_template safexcel_alg_hmac_sm3 = {
.type = SAFEXCEL_ALG_TYPE_AHASH,
.algo_mask = SAFEXCEL_ALG_SM3,
.alg.ahash = {
.init = safexcel_hmac_sm3_init,
.update = safexcel_ahash_update,
.final = safexcel_ahash_final,
.finup = safexcel_ahash_finup,
.digest = safexcel_hmac_sm3_digest,
.setkey = safexcel_hmac_sm3_setkey,
.export = safexcel_ahash_export,
.import = safexcel_ahash_import,
.halg = {
.digestsize = SM3_DIGEST_SIZE,
.statesize = sizeof(struct safexcel_ahash_export_state),
.base = {
.cra_name = "hmac(sm3)",
.cra_driver_name = "safexcel-hmac-sm3",
.cra_priority = SAFEXCEL_CRA_PRIORITY,
.cra_flags = CRYPTO_ALG_ASYNC |
CRYPTO_ALG_KERN_DRIVER_ONLY,
.cra_blocksize = SM3_BLOCK_SIZE,
.cra_ctxsize = sizeof(struct safexcel_ahash_ctx),
.cra_init = safexcel_ahash_cra_init,
.cra_exit = safexcel_ahash_cra_exit,
.cra_module = THIS_MODULE,
},
},
},
};