linux-kernel - [PATCH 10/10] crypto: inside-secure - authenc(hmac(sha384),cbc(aes)) support

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Message-Id: <20180529121352.19490-11-antoine.tenart@bootlin.com>
Date:   Tue, 29 May 2018 14:13:52 +0200
From:   Antoine Tenart <antoine.tenart@...tlin.com>
To:     herbert@...dor.apana.org.au, davem@...emloft.net
Cc:     Antoine Tenart <antoine.tenart@...tlin.com>,
        linux-crypto@...r.kernel.org, linux-kernel@...r.kernel.org,
        thomas.petazzoni@...tlin.com, maxime.chevallier@...tlin.com,
        gregory.clement@...tlin.com, miquel.raynal@...tlin.com,
        nadavh@...vell.com, oferh@...vell.com, igall@...vell.com
Subject: [PATCH 10/10] crypto: inside-secure - authenc(hmac(sha384),cbc(aes)) support

This patch adds the authenc(hmac(sha384),cbc(aes)) algorithm support to
the Inside Secure SafeXcel driver.

Signed-off-by: Antoine Tenart <antoine.tenart@...tlin.com>
---
 drivers/crypto/inside-secure/safexcel.c       |  1 +
 drivers/crypto/inside-secure/safexcel.h       |  1 +
 .../crypto/inside-secure/safexcel_cipher.c    | 39 +++++++++++++++++++
 3 files changed, 41 insertions(+)

diff --git a/drivers/crypto/inside-secure/safexcel.c b/drivers/crypto/inside-secure/safexcel.c
index 5ef8ba7ae29c..c39d2d7c9917 100644
--- a/drivers/crypto/inside-secure/safexcel.c
+++ b/drivers/crypto/inside-secure/safexcel.c
@@ -800,6 +800,7 @@ static struct safexcel_alg_template *safexcel_algs[] = {
 	&safexcel_alg_authenc_hmac_sha1_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha224_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha256_cbc_aes,
+	&safexcel_alg_authenc_hmac_sha384_cbc_aes,
 	&safexcel_alg_authenc_hmac_sha512_cbc_aes,
 };
 
diff --git a/drivers/crypto/inside-secure/safexcel.h b/drivers/crypto/inside-secure/safexcel.h
index e002f963ff5a..5d6b3b705d0c 100644
--- a/drivers/crypto/inside-secure/safexcel.h
+++ b/drivers/crypto/inside-secure/safexcel.h
@@ -682,6 +682,7 @@ extern struct safexcel_alg_template safexcel_alg_hmac_sha512;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha1_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha224_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha256_cbc_aes;
+extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_aes;
 extern struct safexcel_alg_template safexcel_alg_authenc_hmac_sha512_cbc_aes;
 
 #endif
diff --git a/drivers/crypto/inside-secure/safexcel_cipher.c b/drivers/crypto/inside-secure/safexcel_cipher.c
index 560c1e54ce9d..ca4bc2d28d2a 100644
--- a/drivers/crypto/inside-secure/safexcel_cipher.c
+++ b/drivers/crypto/inside-secure/safexcel_cipher.c
@@ -200,6 +200,11 @@ static int safexcel_aead_aes_setkey(struct crypto_aead *ctfm, const u8 *key,
 					 keys.authkeylen, &istate, &ostate))
 			goto badkey;
 		break;
+	case CONTEXT_CONTROL_CRYPTO_ALG_SHA384:
+		if (safexcel_hmac_setkey("safexcel-sha384", keys.authkey,
+					 keys.authkeylen, &istate, &ostate))
+			goto badkey;
+		break;
 	case CONTEXT_CONTROL_CRYPTO_ALG_SHA512:
 		if (safexcel_hmac_setkey("safexcel-sha512", keys.authkey,
 					 keys.authkeylen, &istate, &ostate))
@@ -1058,3 +1063,37 @@ struct safexcel_alg_template safexcel_alg_authenc_hmac_sha512_cbc_aes = {
 		},
 	},
 };
+
+static int safexcel_aead_sha384_cra_init(struct crypto_tfm *tfm)
+{
+	struct safexcel_cipher_ctx *ctx = crypto_tfm_ctx(tfm);
+
+	safexcel_aead_cra_init(tfm);
+	ctx->alg = CONTEXT_CONTROL_CRYPTO_ALG_SHA384;
+	ctx->state_sz = SHA512_DIGEST_SIZE;
+	return 0;
+}
+
+struct safexcel_alg_template safexcel_alg_authenc_hmac_sha384_cbc_aes = {
+	.type = SAFEXCEL_ALG_TYPE_AEAD,
+	.alg.aead = {
+		.setkey = safexcel_aead_aes_setkey,
+		.encrypt = safexcel_aead_encrypt,
+		.decrypt = safexcel_aead_decrypt,
+		.ivsize = AES_BLOCK_SIZE,
+		.maxauthsize = SHA384_DIGEST_SIZE,
+		.base = {
+			.cra_name = "authenc(hmac(sha384),cbc(aes))",
+			.cra_driver_name = "safexcel-authenc-hmac-sha384-cbc-aes",
+			.cra_priority = 300,
+			.cra_flags = CRYPTO_ALG_TYPE_AEAD | CRYPTO_ALG_ASYNC |
+				     CRYPTO_ALG_KERN_DRIVER_ONLY,
+			.cra_blocksize = AES_BLOCK_SIZE,
+			.cra_ctxsize = sizeof(struct safexcel_cipher_ctx),
+			.cra_alignmask = 0,
+			.cra_init = safexcel_aead_sha384_cra_init,
+			.cra_exit = safexcel_aead_cra_exit,
+			.cra_module = THIS_MODULE,
+		},
+	},
+};
-- 
2.17.0