From patchwork Tue Jun 18 12:08:36 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "J, KEERTHY" X-Patchwork-Id: 11001487 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id B6F0A924 for ; Tue, 18 Jun 2019 12:10:19 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A4CC828A61 for ; Tue, 18 Jun 2019 12:10:19 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9934328A63; Tue, 18 Jun 2019 12:10:19 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 1F65D28A68 for ; Tue, 18 Jun 2019 12:10:19 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=PlJQP/D4lBoGJdr2E6VAQzex61miTopmBHMiO2bVsCA=; b=rPdv2p/rMNqcl9 alj7/+kg5rGMAZs1PCHgx7GUlzPSWo1qUkt9pxN+aXcA19h52maIYSt5ZCyvut8GqCGIBmZBraYkJ HA8Twyq5/ByhekcENzk1FMxOeLicNFaqW+iqS8murkR7nKo3LHa0ivd+BLcFzrUBIGkvrgpO/n299 CdFtzt9dnxKXyQkUXuQh9e0W/Mc+DYckKpntxKut7OFj64dnDFHgDjZOlltrcTPKP9STt6NHESG5y /PpR8dxRa368OVuLu1V8WPFrvtDM2+pB6nM2ciZBSe91k7Ca0BpUXnzq30/zQ9M1Yp5Q134ArrvRN 7aLGzXV+lf8bhLXxpFoA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92 #3 (Red Hat Linux)) id 1hdCwF-0003rD-P8; Tue, 18 Jun 2019 12:10:11 +0000 Received: from fllv0016.ext.ti.com ([198.47.19.142]) by bombadil.infradead.org with esmtps (Exim 4.92 #3 (Red Hat Linux)) id 1hdCul-0002tK-NR for linux-arm-kernel@lists.infradead.org; Tue, 18 Jun 2019 12:08:44 +0000 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: , , 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 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_050839_994416_1EE508C5 X-CRM114-Status: GOOD ( 12.55 ) 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 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 */