crypto: inside-secure - hmac(sha512) support

This patch adds the hmac(sha512) algorithm support to the Inside Secure
SafeXcel driver.

Signed-off-by: Antoine Tenart <antoine.tenart@bootlin.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

1 files changed, 58 insertions, 2 deletions

diff --git a/drivers/crypto/inside-secure/safexcel_hash.c b/drivers/crypto/inside-secure/safexcel_hash.c
index 5d8e15e70cff..0c452a4bc6dd 100644
--- a/drivers/crypto/inside-secure/safexcel_hash.c
+++ b/drivers/crypto/inside-secure/safexcel_hash.c
@@ -22,8 +22,8 @@ struct safexcel_ahash_ctx {
 
 	u32 alg;
 
-	u32 ipad[SHA256_DIGEST_SIZE / sizeof(u32)];
-	u32 opad[SHA256_DIGEST_SIZE / sizeof(u32)];
+	u32 ipad[SHA512_DIGEST_SIZE / sizeof(u32)];
+	u32 opad[SHA512_DIGEST_SIZE / sizeof(u32)];
 };
 
 struct safexcel_ahash_req {
@@ -1358,3 +1358,59 @@ struct safexcel_alg_template safexcel_alg_sha512 = {
 		},
 	},
 };
+
+static int safexcel_hmac_sha512_setkey(struct crypto_ahash *tfm, const u8 *key,
+				       unsigned int keylen)
+{
+	return safexcel_hmac_alg_setkey(tfm, key, keylen, "safexcel-sha512",
+					SHA512_DIGEST_SIZE);
+}
+
+static int safexcel_hmac_sha512_init(struct ahash_request *areq)
+{
+	struct safexcel_ahash_req *req = ahash_request_ctx(areq);
+
+	safexcel_sha512_init(areq);
+	req->digest = CONTEXT_CONTROL_DIGEST_HMAC;
+	return 0;
+}
+
+static int safexcel_hmac_sha512_digest(struct ahash_request *areq)
+{
+	int ret = safexcel_hmac_sha512_init(areq);
+
+	if (ret)
+		return ret;
+
+	return safexcel_ahash_finup(areq);
+}
+
+struct safexcel_alg_template safexcel_alg_hmac_sha512 = {
+	.type = SAFEXCEL_ALG_TYPE_AHASH,
+	.alg.ahash = {
+		.init = safexcel_hmac_sha512_init,
+		.update = safexcel_ahash_update,
+		.final = safexcel_ahash_final,
+		.finup = safexcel_ahash_finup,
+		.digest = safexcel_hmac_sha512_digest,
+		.setkey = safexcel_hmac_sha512_setkey,
+		.export = safexcel_ahash_export,
+		.import = safexcel_ahash_import,
+		.halg = {
+			.digestsize = SHA512_DIGEST_SIZE,
+			.statesize = sizeof(struct safexcel_ahash_export_state),
+			.base = {
+				.cra_name = "hmac(sha512)",
+				.cra_driver_name = "safexcel-hmac-sha512",
+				.cra_priority = 300,
+				.cra_flags = CRYPTO_ALG_ASYNC |
+					     CRYPTO_ALG_KERN_DRIVER_ONLY,
+				.cra_blocksize = SHA512_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,
+			},
+		},
+	},
+};