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[209.132.180.67]) by mx.google.com with ESMTP id wy1si20935465pab.171.2015.04.09.03.56.23 for ; Thu, 09 Apr 2015 03:56:24 -0700 (PDT) Received-SPF: none (google.com: linux-crypto-owner@vger.kernel.org does not designate permitted sender hosts) client-ip=209.132.180.67; Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S933272AbbDIK4W (ORCPT ); Thu, 9 Apr 2015 06:56:22 -0400 Received: from mail-wi0-f169.google.com ([209.85.212.169]:35903 "EHLO mail-wi0-f169.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S933260AbbDIK4V (ORCPT ); Thu, 9 Apr 2015 06:56:21 -0400 Received: by wizk4 with SMTP id k4so87505630wiz.1 for ; Thu, 09 Apr 2015 03:56:20 -0700 (PDT) X-Received: by 10.180.82.135 with SMTP id i7mr5139466wiy.85.1428576979919; Thu, 09 Apr 2015 03:56:19 -0700 (PDT) Received: from ards-macbook-pro.local ([90.174.5.113]) by mx.google.com with ESMTPSA id b10sm2192186wiz.9.2015.04.09.03.56.17 (version=TLSv1.1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 09 Apr 2015 03:56:19 -0700 (PDT) From: Ard Biesheuvel To: linux-crypto@vger.kernel.org, linux-arm-kernel@lists.infradead.org, x86@kernel.org, herbert@gondor.apana.org.au, samitolvanen@google.com, jussi.kivilinna@iki.fi Cc: stockhausen@collogia.de, Ard Biesheuvel Subject: [PATCH v4 07/16] crypto/arm: move SHA-1 ARM asm implementation to base layer Date: Thu, 9 Apr 2015 12:55:39 +0200 Message-Id: <1428576948-23863-8-git-send-email-ard.biesheuvel@linaro.org> X-Mailer: git-send-email 1.8.3.2 In-Reply-To: <1428576948-23863-1-git-send-email-ard.biesheuvel@linaro.org> References: <1428576948-23863-1-git-send-email-ard.biesheuvel@linaro.org> Sender: linux-crypto-owner@vger.kernel.org Precedence: list List-ID: X-Mailing-List: linux-crypto@vger.kernel.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: ard.biesheuvel@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.217.180 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Post: , List-Help: , List-Archive: List-Unsubscribe: , This removes all the boilerplate from the existing implementation, and replaces it with calls into the base layer. Signed-off-by: Ard Biesheuvel --- arch/arm/crypto/sha1-ce-glue.c | 3 +- arch/arm/{include/asm => }/crypto/sha1.h | 3 + arch/arm/crypto/sha1_glue.c | 112 +++++-------------------------- arch/arm/crypto/sha1_neon_glue.c | 2 +- 4 files changed, 22 insertions(+), 98 deletions(-) rename arch/arm/{include/asm => }/crypto/sha1.h (67%) diff --git a/arch/arm/crypto/sha1-ce-glue.c b/arch/arm/crypto/sha1-ce-glue.c index a9dd90df9fd7..e93b24c1af1f 100644 --- a/arch/arm/crypto/sha1-ce-glue.c +++ b/arch/arm/crypto/sha1-ce-glue.c @@ -13,12 +13,13 @@ #include #include -#include #include #include #include #include +#include "sha1.h" + MODULE_DESCRIPTION("SHA1 secure hash using ARMv8 Crypto Extensions"); MODULE_AUTHOR("Ard Biesheuvel "); MODULE_LICENSE("GPL v2"); diff --git a/arch/arm/include/asm/crypto/sha1.h b/arch/arm/crypto/sha1.h similarity index 67% rename from arch/arm/include/asm/crypto/sha1.h rename to arch/arm/crypto/sha1.h index 75e6a417416b..ffd8bd08b1a7 100644 --- a/arch/arm/include/asm/crypto/sha1.h +++ b/arch/arm/crypto/sha1.h @@ -7,4 +7,7 @@ extern int sha1_update_arm(struct shash_desc *desc, const u8 *data, unsigned int len); +extern int sha1_finup_arm(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out); + #endif diff --git a/arch/arm/crypto/sha1_glue.c b/arch/arm/crypto/sha1_glue.c index e31b0440c613..6fc73bf8766d 100644 --- a/arch/arm/crypto/sha1_glue.c +++ b/arch/arm/crypto/sha1_glue.c @@ -22,127 +22,47 @@ #include #include #include +#include #include -#include +#include "sha1.h" asmlinkage void sha1_block_data_order(u32 *digest, const unsigned char *data, unsigned int rounds); - -static int sha1_init(struct shash_desc *desc) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - - *sctx = (struct sha1_state){ - .state = { SHA1_H0, SHA1_H1, SHA1_H2, SHA1_H3, SHA1_H4 }, - }; - - return 0; -} - - -static int __sha1_update(struct sha1_state *sctx, const u8 *data, - unsigned int len, unsigned int partial) -{ - unsigned int done = 0; - - sctx->count += len; - - if (partial) { - done = SHA1_BLOCK_SIZE - partial; - memcpy(sctx->buffer + partial, data, done); - sha1_block_data_order(sctx->state, sctx->buffer, 1); - } - - if (len - done >= SHA1_BLOCK_SIZE) { - const unsigned int rounds = (len - done) / SHA1_BLOCK_SIZE; - sha1_block_data_order(sctx->state, data + done, rounds); - done += rounds * SHA1_BLOCK_SIZE; - } - - memcpy(sctx->buffer, data + done, len - done); - return 0; -} - - int sha1_update_arm(struct shash_desc *desc, const u8 *data, unsigned int len) { - struct sha1_state *sctx = shash_desc_ctx(desc); - unsigned int partial = sctx->count % SHA1_BLOCK_SIZE; - int res; + /* make sure casting to sha1_block_fn() is safe */ + BUILD_BUG_ON(offsetof(struct sha1_state, state) != 0); - /* Handle the fast case right here */ - if (partial + len < SHA1_BLOCK_SIZE) { - sctx->count += len; - memcpy(sctx->buffer + partial, data, len); - return 0; - } - res = __sha1_update(sctx, data, len, partial); - return res; + return sha1_base_do_update(desc, data, len, + (sha1_block_fn *)sha1_block_data_order); } EXPORT_SYMBOL_GPL(sha1_update_arm); - -/* Add padding and return the message digest. */ static int sha1_final(struct shash_desc *desc, u8 *out) { - struct sha1_state *sctx = shash_desc_ctx(desc); - unsigned int i, index, padlen; - __be32 *dst = (__be32 *)out; - __be64 bits; - static const u8 padding[SHA1_BLOCK_SIZE] = { 0x80, }; - - bits = cpu_to_be64(sctx->count << 3); - - /* Pad out to 56 mod 64 and append length */ - index = sctx->count % SHA1_BLOCK_SIZE; - padlen = (index < 56) ? (56 - index) : ((SHA1_BLOCK_SIZE+56) - index); - /* We need to fill a whole block for __sha1_update() */ - if (padlen <= 56) { - sctx->count += padlen; - memcpy(sctx->buffer + index, padding, padlen); - } else { - __sha1_update(sctx, padding, padlen, index); - } - __sha1_update(sctx, (const u8 *)&bits, sizeof(bits), 56); - - /* Store state in digest */ - for (i = 0; i < 5; i++) - dst[i] = cpu_to_be32(sctx->state[i]); - - /* Wipe context */ - memset(sctx, 0, sizeof(*sctx)); - return 0; + sha1_base_do_finalize(desc, (sha1_block_fn *)sha1_block_data_order); + return sha1_base_finish(desc, out); } - -static int sha1_export(struct shash_desc *desc, void *out) +int sha1_finup_arm(struct shash_desc *desc, const u8 *data, + unsigned int len, u8 *out) { - struct sha1_state *sctx = shash_desc_ctx(desc); - memcpy(out, sctx, sizeof(*sctx)); - return 0; + sha1_base_do_update(desc, data, len, + (sha1_block_fn *)sha1_block_data_order); + return sha1_final(desc, out); } - - -static int sha1_import(struct shash_desc *desc, const void *in) -{ - struct sha1_state *sctx = shash_desc_ctx(desc); - memcpy(sctx, in, sizeof(*sctx)); - return 0; -} - +EXPORT_SYMBOL_GPL(sha1_finup_arm); static struct shash_alg alg = { .digestsize = SHA1_DIGEST_SIZE, - .init = sha1_init, + .init = sha1_base_init, .update = sha1_update_arm, .final = sha1_final, - .export = sha1_export, - .import = sha1_import, + .finup = sha1_finup_arm, .descsize = sizeof(struct sha1_state), - .statesize = sizeof(struct sha1_state), .base = { .cra_name = "sha1", .cra_driver_name= "sha1-asm", diff --git a/arch/arm/crypto/sha1_neon_glue.c b/arch/arm/crypto/sha1_neon_glue.c index 0b0083757d47..5d9a1b4aac73 100644 --- a/arch/arm/crypto/sha1_neon_glue.c +++ b/arch/arm/crypto/sha1_neon_glue.c @@ -28,8 +28,8 @@ #include #include #include -#include +#include "sha1.h" asmlinkage void sha1_transform_neon(void *state_h, const char *data, unsigned int rounds);