From patchwork Fri May 1 16:42:29 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Eric Biggers X-Patchwork-Id: 11522853 X-Patchwork-Delegate: herbert@gondor.apana.org.au Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CCE171575 for ; Fri, 1 May 2020 16:43:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id B256424954 for ; Fri, 1 May 2020 16:43:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588351424; bh=/zZqnI7dcIJ6GngruQ0w6xq0LcRgHOvyyniSgb0uqx8=; h=From:To:Subject:Date:List-ID:From; b=P4tMX3Ez8sherIuTRwaLVc5cgPcRAmXvCEYKldcbkbyRn8HHi8I0WOU+UrwftTlPl LiBHjqWuAm0DRUHJxHRG7Pph6ViQVUXe+ANcKbi7TfN4pb7cRZLKnTZ4PqfDsgsmVX mU5ErKXCxkpTl2VXaEr0v4FzNW18Y9Z8P6mJU2RI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728970AbgEAQno (ORCPT ); Fri, 1 May 2020 12:43:44 -0400 Received: from mail.kernel.org ([198.145.29.99]:42630 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728946AbgEAQnn (ORCPT ); Fri, 1 May 2020 12:43:43 -0400 Received: from sol.hsd1.ca.comcast.net (c-107-3-166-239.hsd1.ca.comcast.net [107.3.166.239]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 43DE220731 for ; Fri, 1 May 2020 16:43:43 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1588351423; bh=/zZqnI7dcIJ6GngruQ0w6xq0LcRgHOvyyniSgb0uqx8=; h=From:To:Subject:Date:From; b=YIGvOZU/0OlrArSb4DCxSlUeuvAgMwlIxRv48EG4X/Q2uTsmKbkuThCpzP/vWoNwx G2yZOOKEEX41cS0RX4uKmv30Ky/2ZOY00vvS/8ZrKQh9WX92Q09GOWl11GWYrHHDVk srHHLr/V0+kUfjuAcyFryjejr2jTtWzB37K1xEQY= From: Eric Biggers To: linux-crypto@vger.kernel.org Subject: [PATCH v2] crypto: lib/sha256 - return void Date: Fri, 1 May 2020 09:42:29 -0700 Message-Id: <20200501164229.24952-1-ebiggers@kernel.org> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 Sender: linux-crypto-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-crypto@vger.kernel.org From: Eric Biggers The SHA-256 / SHA-224 library functions can't fail, so remove the useless return value. Also long as the declarations are being changed anyway, also fix some parameter names in the declarations to match the definitions. Signed-off-by: Eric Biggers Reviewed-by: Jason A. Donenfeld --- v2: remove unnecessary 'extern' keywords crypto/sha256_generic.c | 14 +++++++++----- include/crypto/sha.h | 18 ++++++------------ include/crypto/sha256_base.h | 6 ++++-- lib/crypto/sha256.c | 20 ++++++++------------ 4 files changed, 27 insertions(+), 31 deletions(-) diff --git a/crypto/sha256_generic.c b/crypto/sha256_generic.c index f2d7095d4f2d64..88156e3e2a33e0 100644 --- a/crypto/sha256_generic.c +++ b/crypto/sha256_generic.c @@ -35,27 +35,31 @@ EXPORT_SYMBOL_GPL(sha256_zero_message_hash); static int crypto_sha256_init(struct shash_desc *desc) { - return sha256_init(shash_desc_ctx(desc)); + sha256_init(shash_desc_ctx(desc)); + return 0; } static int crypto_sha224_init(struct shash_desc *desc) { - return sha224_init(shash_desc_ctx(desc)); + sha224_init(shash_desc_ctx(desc)); + return 0; } int crypto_sha256_update(struct shash_desc *desc, const u8 *data, unsigned int len) { - return sha256_update(shash_desc_ctx(desc), data, len); + sha256_update(shash_desc_ctx(desc), data, len); + return 0; } EXPORT_SYMBOL(crypto_sha256_update); static int crypto_sha256_final(struct shash_desc *desc, u8 *out) { if (crypto_shash_digestsize(desc->tfm) == SHA224_DIGEST_SIZE) - return sha224_final(shash_desc_ctx(desc), out); + sha224_final(shash_desc_ctx(desc), out); else - return sha256_final(shash_desc_ctx(desc), out); + sha256_final(shash_desc_ctx(desc), out); + return 0; } int crypto_sha256_finup(struct shash_desc *desc, const u8 *data, diff --git a/include/crypto/sha.h b/include/crypto/sha.h index 5c2132c7190095..67aec7245cb75a 100644 --- a/include/crypto/sha.h +++ b/include/crypto/sha.h @@ -123,7 +123,7 @@ extern int crypto_sha512_finup(struct shash_desc *desc, const u8 *data, * For details see lib/crypto/sha256.c */ -static inline int sha256_init(struct sha256_state *sctx) +static inline void sha256_init(struct sha256_state *sctx) { sctx->state[0] = SHA256_H0; sctx->state[1] = SHA256_H1; @@ -134,14 +134,11 @@ static inline int sha256_init(struct sha256_state *sctx) sctx->state[6] = SHA256_H6; sctx->state[7] = SHA256_H7; sctx->count = 0; - - return 0; } -extern int sha256_update(struct sha256_state *sctx, const u8 *input, - unsigned int length); -extern int sha256_final(struct sha256_state *sctx, u8 *hash); +void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len); +void sha256_final(struct sha256_state *sctx, u8 *out); -static inline int sha224_init(struct sha256_state *sctx) +static inline void sha224_init(struct sha256_state *sctx) { sctx->state[0] = SHA224_H0; sctx->state[1] = SHA224_H1; @@ -152,11 +149,8 @@ static inline int sha224_init(struct sha256_state *sctx) sctx->state[6] = SHA224_H6; sctx->state[7] = SHA224_H7; sctx->count = 0; - - return 0; } -extern int sha224_update(struct sha256_state *sctx, const u8 *input, - unsigned int length); -extern int sha224_final(struct sha256_state *sctx, u8 *hash); +void sha224_update(struct sha256_state *sctx, const u8 *data, unsigned int len); +void sha224_final(struct sha256_state *sctx, u8 *out); #endif diff --git a/include/crypto/sha256_base.h b/include/crypto/sha256_base.h index cea60cff80bd87..6ded110783ae87 100644 --- a/include/crypto/sha256_base.h +++ b/include/crypto/sha256_base.h @@ -22,14 +22,16 @@ static inline int sha224_base_init(struct shash_desc *desc) { struct sha256_state *sctx = shash_desc_ctx(desc); - return sha224_init(sctx); + sha224_init(sctx); + return 0; } static inline int sha256_base_init(struct shash_desc *desc) { struct sha256_state *sctx = shash_desc_ctx(desc); - return sha256_init(sctx); + sha256_init(sctx); + return 0; } static inline int sha256_base_do_update(struct shash_desc *desc, diff --git a/lib/crypto/sha256.c b/lib/crypto/sha256.c index 66cb04b0cf4e7e..2e621697c5c35c 100644 --- a/lib/crypto/sha256.c +++ b/lib/crypto/sha256.c @@ -206,7 +206,7 @@ static void sha256_transform(u32 *state, const u8 *input) memzero_explicit(W, 64 * sizeof(u32)); } -int sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len) +void sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len) { unsigned int partial, done; const u8 *src; @@ -232,18 +232,16 @@ int sha256_update(struct sha256_state *sctx, const u8 *data, unsigned int len) partial = 0; } memcpy(sctx->buf + partial, src, len - done); - - return 0; } EXPORT_SYMBOL(sha256_update); -int sha224_update(struct sha256_state *sctx, const u8 *data, unsigned int len) +void sha224_update(struct sha256_state *sctx, const u8 *data, unsigned int len) { - return sha256_update(sctx, data, len); + sha256_update(sctx, data, len); } EXPORT_SYMBOL(sha224_update); -static int __sha256_final(struct sha256_state *sctx, u8 *out, int digest_words) +static void __sha256_final(struct sha256_state *sctx, u8 *out, int digest_words) { __be32 *dst = (__be32 *)out; __be64 bits; @@ -268,19 +266,17 @@ static int __sha256_final(struct sha256_state *sctx, u8 *out, int digest_words) /* Zeroize sensitive information. */ memset(sctx, 0, sizeof(*sctx)); - - return 0; } -int sha256_final(struct sha256_state *sctx, u8 *out) +void sha256_final(struct sha256_state *sctx, u8 *out) { - return __sha256_final(sctx, out, 8); + __sha256_final(sctx, out, 8); } EXPORT_SYMBOL(sha256_final); -int sha224_final(struct sha256_state *sctx, u8 *out) +void sha224_final(struct sha256_state *sctx, u8 *out) { - return __sha256_final(sctx, out, 7); + __sha256_final(sctx, out, 7); } EXPORT_SYMBOL(sha224_final);