From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-8.9 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH, MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id ABE70C31E51 for ; Tue, 18 Jun 2019 12:09:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 7F923208E4 for ; Tue, 18 Jun 2019 12:09:07 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (1024-bit key) header.d=ti.com header.i=@ti.com header.b="C3fhHXu0" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729230AbfFRMIt (ORCPT ); Tue, 18 Jun 2019 08:08:49 -0400 Received: from fllv0016.ext.ti.com ([198.47.19.142]:53736 "EHLO fllv0016.ext.ti.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1729131AbfFRMIp (ORCPT ); Tue, 18 Jun 2019 08:08:45 -0400 Received: from lelv0266.itg.ti.com ([10.180.67.225]) by fllv0016.ext.ti.com (8.15.2/8.15.2) with ESMTP id x5IC8Liq113658; Tue, 18 Jun 2019 07:08:21 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ti.com; s=ti-com-17Q1; t=1560859701; bh=LRrIRoI605SGe2Kd9jqNqCwySQtTN507at5OWZZ7EhQ=; h=From:To:CC:Subject:Date:In-Reply-To:References; b=C3fhHXu0nAxcsjDZskUqYz9lCCd4cdSn3XxCIoZahIkc0Il9VSA/18e6Uxa50Km9X oH4Ntxd68d8xPdbuPMX7MkNAuDSejMcFkL7p1bhpgTSsRW+aBR6xlsIv0wF56h/IxO sYbm0TiaY4bPmpGrwnVszlGvdLQT84WZUDV32gHk= Received: from DFLE105.ent.ti.com (dfle105.ent.ti.com [10.64.6.26]) by lelv0266.itg.ti.com (8.15.2/8.15.2) with ESMTPS id x5IC8LWQ044525 (version=TLSv1.2 cipher=AES256-GCM-SHA384 bits=256 verify=FAIL); Tue, 18 Jun 2019 07:08:21 -0500 Received: from DFLE100.ent.ti.com (10.64.6.21) by DFLE105.ent.ti.com (10.64.6.26) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256_P256) id 15.1.1713.5; Tue, 18 Jun 2019 07:08:21 -0500 Received: from fllv0040.itg.ti.com (10.64.41.20) by DFLE100.ent.ti.com (10.64.6.21) 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 07:08:21 -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 x5IC89Gb080327; Tue, 18 Jun 2019 07:08:18 -0500 From: Keerthy To: , , CC: , , , , , Subject: [PATCH 03/10] crypto: sa2ul: Add AES ECB Mode support Date: Tue, 18 Jun 2019 17:38:36 +0530 Message-ID: <20190618120843.18777-4-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 Content-Type: text/plain X-EXCLAIMER-MD-CONFIG: e1e8a2fd-e40a-4ac6-ac9b-f7e9cc9ee180 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Add support for AES algorithm in ECB Mode. Data encryption modes are supported via MCE engine (programmable mode control engine). ECB (Electronic code book) is a mode of operation for a block cipher, with the characteristic that each possible block of plaintext has a defined corresponding ciphertext value and vice versa. In other words, the same plaintext value will always result in the same ciphertext value. Signed-off-by: Keerthy --- drivers/crypto/sa2ul.c | 76 ++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 76 insertions(+) diff --git a/drivers/crypto/sa2ul.c b/drivers/crypto/sa2ul.c index 64bdf6b2b879..a17c1f66c5c1 100644 --- a/drivers/crypto/sa2ul.c +++ b/drivers/crypto/sa2ul.c @@ -178,6 +178,38 @@ static u8 mci_cbc_dec_array[3][MODE_CONTROL_BYTES] = { 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, }; +/* + * Mode Control Instructions for various Key lengths 128, 192, 256 + * For ECB (Electronic Code Book) mode for encryption + */ +static u8 mci_ecb_enc_array[3][27] = { + { 0x21, 0x00, 0x00, 0x80, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x21, 0x00, 0x00, 0x84, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x21, 0x00, 0x00, 0x88, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, +}; + +/* + * Mode Control Instructions for various Key lengths 128, 192, 256 + * For ECB (Electronic Code Book) mode for decryption + */ +static u8 mci_ecb_dec_array[3][27] = { + { 0x31, 0x00, 0x00, 0x80, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x31, 0x00, 0x00, 0x84, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, + { 0x31, 0x00, 0x00, 0x88, 0x8a, 0x04, 0xb7, 0x90, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, + 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00 }, +}; + /* * Perform 16 byte or 128 bit swizzling * The SA2UL Expects the security context to @@ -746,6 +778,26 @@ static int sa_aes_cbc_setkey(struct crypto_ablkcipher *tfm, const u8 *key, return sa_aes_setkey(tfm, key, keylen, ad); } +static int sa_aes_ecb_setkey(struct crypto_ablkcipher *tfm, const u8 *key, + unsigned int keylen) +{ + struct algo_data *ad = kzalloc(sizeof(*ad), GFP_KERNEL); + /* Convert the key size (16/24/32) to the key size index (0/1/2) */ + int key_idx = (keylen >> 3) - 2; + + ad->enc_eng.eng_id = SA_ENG_ID_EM1; + ad->enc_eng.sc_size = SA_CTX_ENC_TYPE1_SZ; + ad->auth_eng.eng_id = SA_ENG_ID_NONE; + ad->auth_eng.sc_size = 0; + ad->mci_enc = mci_ecb_enc_array[key_idx]; + ad->mci_dec = mci_ecb_dec_array[key_idx]; + ad->inv_key = true; + ad->ealg_id = SA_EALG_ID_AES_ECB; + ad->aalg_id = SA_AALG_ID_NONE; + + return sa_aes_setkey(tfm, key, keylen, ad); +} + static void sa_aes_dma_in_callback(void *data) { struct sa_rx_data *rxd = (struct sa_rx_data *)data; @@ -940,6 +992,30 @@ static struct sa_alg_tmpl sa_algs[] = { } } }, + { .type = CRYPTO_ALG_TYPE_ABLKCIPHER, + .alg.crypto = { + .cra_name = "ecb(aes)", + .cra_driver_name = "ecb-aes-sa2ul", + .cra_priority = 30000, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | + CRYPTO_ALG_KERN_DRIVER_ONLY | + CRYPTO_ALG_ASYNC | CRYPTO_ALG_NEED_FALLBACK, + .cra_blocksize = AES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct sa_tfm_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = sa_aes_cra_init, + .cra_exit = sa_aes_cra_exit, + .cra_u.ablkcipher = { + .min_keysize = AES_MIN_KEY_SIZE, + .max_keysize = AES_MAX_KEY_SIZE, + .setkey = sa_aes_ecb_setkey, + .encrypt = sa_aes_cbc_encrypt, + .decrypt = sa_aes_cbc_decrypt, + } + } + }, }; /* Register the algorithms in crypto framework */ -- 2.17.1