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authorPascal van Leeuwen <pascalvanl@gmail.com>2019-09-13 17:20:37 +0200
committerHerbert Xu <herbert@gondor.apana.org.au>2019-10-05 01:06:03 +1000
commitaa3a43e6e41901a82e47aee172df1eb406470f94 (patch)
treef3f42fb7c00ada17a32d8231d906e62ade7b0806 /drivers/crypto/inside-secure
parent0f2bc13181ce22d365929176a3d3d47fb857c202 (diff)
crypto: inside-secure - Added support for HMAC-SM3 ahash
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>
Diffstat (limited to 'drivers/crypto/inside-secure')
-rw-r--r--drivers/crypto/inside-secure/safexcel.c1
-rw-r--r--drivers/crypto/inside-secure/safexcel.h1
-rw-r--r--drivers/crypto/inside-secure/safexcel_hash.c70
3 files changed, 72 insertions, 0 deletions
diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 32682e0cf84e..87d431afd44d 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -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)
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index e2993b58e596..1b2d709dff39 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -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
diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 873b77449b90..272e5fd0de7e 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -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,
+ },
+ },
+ },
+};