From patchwork Fri May 22 13:33:50 2015 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Boris BREZILLON X-Patchwork-Id: 6464421 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: X-Original-To: patchwork-linux-crypto@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork1.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.29.136]) by patchwork1.web.kernel.org (Postfix) with ESMTP id 093039F399 for ; Fri, 22 May 2015 13:34:29 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id BF6AD20495 for ; Fri, 22 May 2015 13:34:27 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 2A6F5204AD for ; Fri, 22 May 2015 13:34:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757365AbbEVNeS (ORCPT ); Fri, 22 May 2015 09:34:18 -0400 Received: from down.free-electrons.com ([37.187.137.238]:47267 "EHLO mail.free-electrons.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1757059AbbEVNeL (ORCPT ); Fri, 22 May 2015 09:34:11 -0400 Received: by mail.free-electrons.com (Postfix, from userid 106) id 9CC90802; Fri, 22 May 2015 15:34:12 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_HI, T_RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from localhost.localdomain (col31-4-88-188-83-94.fbx.proxad.net [88.188.83.94]) by mail.free-electrons.com (Postfix) with ESMTPSA id 88FB6360; Fri, 22 May 2015 15:34:11 +0200 (CEST) From: Boris Brezillon To: Herbert Xu , "David S. Miller" , linux-crypto@vger.kernel.org Cc: Boris Brezillon , Arnaud Ebalard , Thomas Petazzoni , Gregory CLEMENT , Jason Cooper , Sebastian Hesselbarth , Andrew Lunn , Tawfik Bayouk , Lior Amsalem , Nadav Haklai , Eran Ben-Avi , Rob Herring , Pawel Moll , Mark Rutland , Ian Campbell , Kumar Gala , devicetree@vger.kernel.org Subject: [PATCH v3 04/16] crypto: marvell/CESA: add DES support Date: Fri, 22 May 2015 15:33:50 +0200 Message-Id: <1432301642-11470-5-git-send-email-boris.brezillon@free-electrons.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1432301642-11470-1-git-send-email-boris.brezillon@free-electrons.com> References: <1432301642-11470-1-git-send-email-boris.brezillon@free-electrons.com> Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add support for DES operations. Signed-off-by: Boris Brezillon Signed-off-by: Arnaud Ebalard --- drivers/crypto/marvell/cesa.c | 2 + drivers/crypto/marvell/cesa.h | 2 + drivers/crypto/marvell/cipher.c | 150 ++++++++++++++++++++++++++++++++++++++++ 3 files changed, 154 insertions(+) diff --git a/drivers/crypto/marvell/cesa.c b/drivers/crypto/marvell/cesa.c index 1aef750..3e9aca5 100644 --- a/drivers/crypto/marvell/cesa.c +++ b/drivers/crypto/marvell/cesa.c @@ -165,6 +165,8 @@ static void mv_cesa_remove_algs(struct mv_cesa_dev *cesa) } static struct crypto_alg *armada_370_cipher_algs[] = { + &mv_cesa_ecb_des_alg, + &mv_cesa_cbc_des_alg, &mv_cesa_ecb_aes_alg, &mv_cesa_cbc_aes_alg, }; diff --git a/drivers/crypto/marvell/cesa.h b/drivers/crypto/marvell/cesa.h index fcacc70..5d91da3 100644 --- a/drivers/crypto/marvell/cesa.h +++ b/drivers/crypto/marvell/cesa.h @@ -790,6 +790,8 @@ int mv_cesa_dma_add_op_transfers(struct mv_cesa_tdma_chain *chain, extern struct ahash_alg mv_sha1_alg; extern struct ahash_alg mv_ahmac_sha1_alg; +extern struct crypto_alg mv_cesa_ecb_des_alg; +extern struct crypto_alg mv_cesa_cbc_des_alg; extern struct crypto_alg mv_cesa_ecb_aes_alg; extern struct crypto_alg mv_cesa_cbc_aes_alg; diff --git a/drivers/crypto/marvell/cipher.c b/drivers/crypto/marvell/cipher.c index 4296a58..0169fd7 100644 --- a/drivers/crypto/marvell/cipher.c +++ b/drivers/crypto/marvell/cipher.c @@ -13,9 +13,15 @@ */ #include +#include #include "cesa.h" +struct mv_cesa_des_ctx { + struct mv_cesa_ctx base; + u8 key[DES_KEY_SIZE]; +}; + struct mv_cesa_aes_ctx { struct mv_cesa_ctx base; struct crypto_aes_ctx aes; @@ -223,6 +229,30 @@ static int mv_cesa_aes_setkey(struct crypto_ablkcipher *cipher, const u8 *key, return 0; } +static int mv_cesa_des_setkey(struct crypto_ablkcipher *cipher, const u8 *key, + unsigned int len) +{ + struct crypto_tfm *tfm = crypto_ablkcipher_tfm(cipher); + struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(tfm); + u32 tmp[DES_EXPKEY_WORDS]; + int ret; + + if (len != DES_KEY_SIZE) { + crypto_ablkcipher_set_flags(cipher, CRYPTO_TFM_RES_BAD_KEY_LEN); + return -EINVAL; + } + + ret = des_ekey(tmp, key); + if (!ret && (tfm->crt_flags & CRYPTO_TFM_REQ_WEAK_KEY)) { + tfm->crt_flags |= CRYPTO_TFM_RES_WEAK_KEY; + return -EINVAL; + } + + memcpy(ctx->key, key, DES_KEY_SIZE); + + return 0; +} + static int mv_cesa_ablkcipher_dma_req_init(struct ablkcipher_request *req, const struct mv_cesa_op_ctx *op_templ) { @@ -336,6 +366,126 @@ static int mv_cesa_ablkcipher_req_init(struct ablkcipher_request *req, return ret; } +static int mv_cesa_des_op(struct ablkcipher_request *req, + struct mv_cesa_op_ctx *tmpl) +{ + struct mv_cesa_des_ctx *ctx = crypto_tfm_ctx(req->base.tfm); + int ret; + + mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTM_DES, + CESA_SA_DESC_CFG_CRYPTM_MSK); + + memcpy(tmpl->ctx.blkcipher.key, ctx->key, DES_KEY_SIZE); + + ret = mv_cesa_ablkcipher_req_init(req, tmpl); + if (ret) + return ret; + + ret = mv_cesa_queue_req(&req->base); + if (ret && ret != -EINPROGRESS) + mv_cesa_ablkcipher_cleanup(req); + + return ret; +} + +static int mv_cesa_ecb_des_encrypt(struct ablkcipher_request *req) +{ + struct mv_cesa_op_ctx tmpl; + + mv_cesa_set_op_cfg(&tmpl, + CESA_SA_DESC_CFG_CRYPTCM_ECB | + CESA_SA_DESC_CFG_DIR_ENC); + + return mv_cesa_des_op(req, &tmpl); +} + +static int mv_cesa_ecb_des_decrypt(struct ablkcipher_request *req) +{ + struct mv_cesa_op_ctx tmpl; + + mv_cesa_set_op_cfg(&tmpl, + CESA_SA_DESC_CFG_CRYPTCM_ECB | + CESA_SA_DESC_CFG_DIR_DEC); + + return mv_cesa_des_op(req, &tmpl); +} + +struct crypto_alg mv_cesa_ecb_des_alg = { + .cra_name = "ecb(des)", + .cra_driver_name = "mv-ecb-des", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | + CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct mv_cesa_des_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = mv_cesa_ablkcipher_cra_init, + .cra_u = { + .ablkcipher = { + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .setkey = mv_cesa_des_setkey, + .encrypt = mv_cesa_ecb_des_encrypt, + .decrypt = mv_cesa_ecb_des_decrypt, + }, + }, +}; + +static int mv_cesa_cbc_des_op(struct ablkcipher_request *req, + struct mv_cesa_op_ctx *tmpl) +{ + mv_cesa_update_op_cfg(tmpl, CESA_SA_DESC_CFG_CRYPTCM_CBC, + CESA_SA_DESC_CFG_CRYPTCM_MSK); + + memcpy(tmpl->ctx.blkcipher.iv, req->info, 8); + + return mv_cesa_des_op(req, tmpl); +} + +static int mv_cesa_cbc_des_encrypt(struct ablkcipher_request *req) +{ + struct mv_cesa_op_ctx tmpl; + + mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_ENC); + + return mv_cesa_cbc_des_op(req, &tmpl); +} + +static int mv_cesa_cbc_des_decrypt(struct ablkcipher_request *req) +{ + struct mv_cesa_op_ctx tmpl; + + mv_cesa_set_op_cfg(&tmpl, CESA_SA_DESC_CFG_DIR_DEC); + + return mv_cesa_cbc_des_op(req, &tmpl); +} + +struct crypto_alg mv_cesa_cbc_des_alg = { + .cra_name = "cbc(des)", + .cra_driver_name = "mv-cbc-des", + .cra_priority = 300, + .cra_flags = CRYPTO_ALG_TYPE_ABLKCIPHER | + CRYPTO_ALG_KERN_DRIVER_ONLY | CRYPTO_ALG_ASYNC, + .cra_blocksize = DES_BLOCK_SIZE, + .cra_ctxsize = sizeof(struct mv_cesa_des_ctx), + .cra_alignmask = 0, + .cra_type = &crypto_ablkcipher_type, + .cra_module = THIS_MODULE, + .cra_init = mv_cesa_ablkcipher_cra_init, + .cra_u = { + .ablkcipher = { + .min_keysize = DES_KEY_SIZE, + .max_keysize = DES_KEY_SIZE, + .ivsize = DES_BLOCK_SIZE, + .setkey = mv_cesa_des_setkey, + .encrypt = mv_cesa_cbc_des_encrypt, + .decrypt = mv_cesa_cbc_des_decrypt, + }, + }, +}; + static int mv_cesa_aes_op(struct ablkcipher_request *req, struct mv_cesa_op_ctx *tmpl) {