From nobody Mon Sep 8 06:22:01 2025 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 7A7C829A9E4; Mon, 30 Jun 2025 16:09:23 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751299763; cv=none; b=JMVyRUiefSlJUSnK4AhFjmgpjKZM2/RiaIh72h0U9K08uk07uKwiArfglBzVd0OzC9U7jNhhL5LT2/+5nhnqC+1tYQSEhgvKh+rZm0CXGQcRGXmXX6pZqFaCdZv4sVNFatqLIkDX67WwfjknjabXOGkZwe1mrErHEQGNgFwTmbc= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1751299763; c=relaxed/simple; bh=6di/lemdUUuURN063IywyRZhcwaKdCBZPfLQhM19GXE=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=EK40qn/cY/2L2DSxjhTWXA9azxJsTE5DQPQuT+rdBAUFwYGBVyqFGeDG7tuQVtF3AYyXvKTwHgcysm11s1rlOUCav5RAmYRzuZVkZC1IHlP147NPwvvT3O1+e+Y15G97KXiwcfL9T7o31y4KTtzcKejvBEfO8wzDdGKfqY6yIzA= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=YUEz13tr; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="YUEz13tr" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AB4A6C4CEF2; Mon, 30 Jun 2025 16:09:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1751299763; bh=6di/lemdUUuURN063IywyRZhcwaKdCBZPfLQhM19GXE=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=YUEz13trRmGOF1EnTtptvIlzO1jaL21f4T0TLFxkW98FzmMLj6qDaW0ODvpbNWxVx tfzJ5ASzjGW+jCVRJoRjoHWBYInTKNgLLwpEMauVZBla27IPaaN+Sguq8bUNybwcZ4 m+N6TBi5X7Aay6IJ+JyWUd5O6u3c4w4eAXAtYJv0zGGmEokWNCcro5PhDuNp1zwNIV 7GOiv6OLqYq9c2mtptz2nJBsjhusfEek4rvPdyXbAKJYVSSGkIMS15fAWfrnJ7CW2r CftvB1tqiZa/uHE5fCme+6m0uY6xzuSfr5q5bF9mchP3IO8KvUpNaXsOLzSyGIIoJR H3sy/rJqdx/Hw== From: Eric Biggers To: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, linux-riscv@lists.infradead.org, linux-s390@vger.kernel.org, sparclinux@vger.kernel.org, x86@kernel.org, Ard Biesheuvel , "Jason A . Donenfeld" , Eric Biggers Subject: [PATCH v2 05/14] lib/crypto: sha256: Add sha224() and sha224_update() Date: Mon, 30 Jun 2025 09:06:36 -0700 Message-ID: <20250630160645.3198-6-ebiggers@kernel.org> X-Mailer: git-send-email 2.50.0 In-Reply-To: <20250630160645.3198-1-ebiggers@kernel.org> References: <20250630160645.3198-1-ebiggers@kernel.org> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Add a one-shot SHA-224 computation function sha224(), for consistency with sha256(), sha384(), and sha512() which all already exist. Similarly, add sha224_update(). While for now it's identical to sha256_update(), omitting it makes the API harder to use since users have to "know" which functions are the same between SHA-224 and SHA-256. Also, this is a prerequisite for using different context types for each. Signed-off-by: Eric Biggers --- include/crypto/sha2.h | 10 ++++++++-- lib/crypto/sha256.c | 10 ++++++++++ 2 files changed, 18 insertions(+), 2 deletions(-) diff --git a/include/crypto/sha2.h b/include/crypto/sha2.h index bb181b7996cdc..e31da0743a522 100644 --- a/include/crypto/sha2.h +++ b/include/crypto/sha2.h @@ -112,22 +112,28 @@ struct sha512_state { u64 state[SHA512_DIGEST_SIZE / 8]; u64 count[2]; u8 buf[SHA512_BLOCK_SIZE]; }; =20 +void sha256_update(struct sha256_state *sctx, const u8 *data, size_t len); + static inline void sha224_init(struct sha256_state *sctx) { sha224_block_init(&sctx->ctx); } -/* Simply use sha256_update as it is equivalent to sha224_update. */ +static inline void sha224_update(struct sha256_state *sctx, + const u8 *data, size_t len) +{ + sha256_update(sctx, data, len); +} void sha224_final(struct sha256_state *sctx, u8 out[SHA224_DIGEST_SIZE]); +void sha224(const u8 *data, size_t len, u8 out[SHA224_DIGEST_SIZE]); =20 static inline void sha256_init(struct sha256_state *sctx) { sha256_block_init(&sctx->ctx); } -void sha256_update(struct sha256_state *sctx, const u8 *data, size_t len); void sha256_final(struct sha256_state *sctx, u8 out[SHA256_DIGEST_SIZE]); void sha256(const u8 *data, size_t len, u8 out[SHA256_DIGEST_SIZE]); =20 /* State for the SHA-512 (and SHA-384) compression function */ struct sha512_block_state { diff --git a/lib/crypto/sha256.c b/lib/crypto/sha256.c index 573ccecbf48bf..ccaae70880166 100644 --- a/lib/crypto/sha256.c +++ b/lib/crypto/sha256.c @@ -68,10 +68,20 @@ void sha256_final(struct sha256_state *sctx, u8 out[SHA= 256_DIGEST_SIZE]) { __sha256_final(sctx, out, SHA256_DIGEST_SIZE); } EXPORT_SYMBOL(sha256_final); =20 +void sha224(const u8 *data, size_t len, u8 out[SHA224_DIGEST_SIZE]) +{ + struct sha256_state sctx; + + sha224_init(&sctx); + sha224_update(&sctx, data, len); + sha224_final(&sctx, out); +} +EXPORT_SYMBOL(sha224); + void sha256(const u8 *data, size_t len, u8 out[SHA256_DIGEST_SIZE]) { struct sha256_state sctx; =20 sha256_init(&sctx); --=20 2.50.0