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Tue, 18 Jun 2019 07:08:35 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE102.ent.ti.com (10.64.6.23) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5 via Frontend Transport; Tue, 18 Jun 2019 07:08:35 -0500 Received: from a0393675ula.india.ti.com (ileax41-snat.itg.ti.com [10.172.224.153]) by fllv0040.itg.ti.com (8.15.2/8.15.2) with ESMTP id x5IC89Gg080327; Tue, 18 Jun 2019 07:08:33 -0500 From: Keerthy To: , , Subject: [PATCH 08/10] crypto: sa2ul: Add hmac(sha256) HMAC algorithm support Date: Tue, 18 Jun 2019 17:38:41 +0530 Message-ID: <20190618120843.18777-9-j-keerthy@ti.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20190618120843.18777-1-j-keerthy@ti.com> References: <20190618120843.18777-1-j-keerthy@ti.com> MIME-Version: 1.0 X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190618_050847_527772_AC73F5EC X-CRM114-Status: GOOD ( 13.68 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: nm@ti.com, devicetree@vger.kernel.org, j-keerthy@ti.com, linux-kernel@vger.kernel.org, t-kristo@ti.com, linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP HMAC hash-based message authentication code) is a specific type of message authentication code (MAC) involving a cryptographic hash function and a secret cryptographic key. It may be used to simultaneously verify both the data integrity and the authentication of a message, as with any MAC. Add hmac(sha256) HMAC algorithm support and the message digest size is 32 bytes. Signed-off-by: Keerthy --- drivers/crypto/sa2ul.c | 52 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 52 insertions(+) diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c index e3a1321f0666..74211cd21c62 100644 --- a/drivers/crypto/sa2ul.c +++ b/drivers/crypto/sa2ul.c @@ -1673,11 +1673,38 @@ static int sa_sham_sha1_setkey(struct crypto_ahash *tfm, const u8 *key, return sa_sham_setkey(tfm, key, keylen, ad); } +static int sa_sham_sha256_setkey(struct crypto_ahash *tfm, const u8 *key, + unsigned int keylen) +{ + struct algo_data *ad = kzalloc(sizeof(*ad), GFP_KERNEL); + + ad->enc_eng.eng_id = SA_ENG_ID_NONE; + ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ; + ad->auth_eng.eng_id = SA_ENG_ID_AM1; + ad->auth_eng.sc_size = SA_CTX_AUTH_TYPE2_SZ; + ad->mci_enc = NULL; + ad->mci_dec = NULL; + ad->inv_key = false; + ad->keyed_mac = true; + ad->ealg_id = SA_EALG_ID_NONE; + ad->aalg_id = SA_AALG_ID_HMAC_SHA2_256; + ad->hash_size = SHA256_DIGEST_SIZE; + ad->auth_ctrl = 0x4; + ad->prep_iopad = sa_hmac_sha256_get_pad; + + return sa_sham_setkey(tfm, key, keylen, ad); +} + static int sa_sham_cra_sha1_init(struct crypto_tfm *tfm) { return sa_sham_cra_init_alg(tfm, "sha1"); } +static int sa_sham_cra_sha256_init(struct crypto_tfm *tfm) +{ + return sa_sham_cra_init_alg(tfm, "sha256"); +} + static void sa_sham_cra_exit(struct crypto_tfm *tfm) { struct crypto_alg *alg = tfm->__crt_alg; @@ -1839,6 +1866,31 @@ static struct ahash_alg algs_sha[] = { .cra_exit = sa_sham_cra_exit, } }, +{ + .init = sa_sham_init, + .update = sa_sham_update, + .final = sa_sham_final, + .finup = sa_sham_finup, + .digest = sa_sham_digest, + .setkey = sa_sham_sha256_setkey, + .halg.digestsize = SHA256_DIGEST_SIZE, + .halg.statesize = 128, + .halg.base = { + .cra_name = "hmac(sha256)", + .cra_driver_name = "sa-hmac-sha256", + .cra_priority = 400, + .cra_flags = CRYPTO_ALG_TYPE_AHASH | + CRYPTO_ALG_ASYNC | + CRYPTO_ALG_KERN_DRIVER_ONLY | + CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = SHA256_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sa_tfm_ctx), + .cra_alignmask = SA_ALIGN_MASK, + .cra_module = THIS_MODULE, + .cra_init = sa_sham_cra_sha256_init, + .cra_exit = sa_sham_cra_exit, + } +}, }; /* Register the algorithms in crypto framework */