From nobody Fri Oct 3 12:24:15 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 022B22EC083; Mon, 1 Sep 2025 16:52:39 +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=1756745560; cv=none; b=u4LQUPdodyGdjm5Lkz9UWc83c5Jf0vr/1tsOgyA/GfMoJiO/VW9Ts1IXyIvkoYPdAsJRqAD82mU66bMzD9roabo6o4Qe68gDyp6680TUVHAKPp/Dnv5+8lXIFAwu+JLKzQ1x3J6qlSWC7XBWPPLnA1pKv6GIpUsj/0nfi396s/0= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1756745560; c=relaxed/simple; bh=XFff4ztVNM7A2DSEz/0F1H8morLJnpt2FM2EP8GGFrU=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=oeQCwxrm4VcRsszyYXGDyIaYQ6Zryi0jwXYEAawkLpWrzjfABbVlzCr08OqyjdxtVnzL5v2VpTNm//f/0tF6eoVaV0RYkQtqCnX3u3ir669fO5oNcIdbh7kGl4n2EIyZcnimHSgcR84t+BinRliFWOYDqVdM9pmnPs6HxiC9Sq8= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=t6wMPqlm; 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="t6wMPqlm" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6F928C4CEF1; Mon, 1 Sep 2025 16:52:39 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1756745559; bh=XFff4ztVNM7A2DSEz/0F1H8morLJnpt2FM2EP8GGFrU=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=t6wMPqlmRWjBKxVvkAx/vHDcUfas7mJMf2Ap1GW85rSZbftX8+lA6yVGq7uTEztaK NeYakRRvZ5bAZ9F3Fk1kxizo9UGaZcAgE8T8zrCgV+MOYYsQjl4n547Hix2iw5JxEK shYpbOCM2/FgzdJyfpyizDzbe9YYYCTxi402D46BLOwjGLqdXNh/MZw/ak7oMZu7oF E/ig2fA9HCBCHaXOwwceLsgXLoHPuEEY6yihoyqO8zXpgxkdUmWUOqJOipzT38B2CL G2elLwJ9+ME82kWgdJQ56SStjoxoDJ2L7OnM8oRm+pLmzP193ROwQ5u1rMnGBmYNRG yHNkYjoauRQjg== From: Eric Biggers To: linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Ard Biesheuvel , "Jason A . Donenfeld" , qat-linux@intel.com, Giovanni Cabiddu , Ovidiu Panait , Eric Biggers Subject: [PATCH 1/3] crypto: sha1 - Implement export_core() and import_core() Date: Mon, 1 Sep 2025 09:50:11 -0700 Message-ID: <20250901165013.48649-2-ebiggers@kernel.org> X-Mailer: git-send-email 2.50.1 In-Reply-To: <20250901165013.48649-1-ebiggers@kernel.org> References: <20250901165013.48649-1-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" Since commit 9d7a0ab1c753 ("crypto: ahash - Handle partial blocks in API"), the recently-added export_core() and import_core() methods in struct shash_alg have effectively become mandatory (even though it is not tested or enforced), since legacy drivers that need a fallback depend on them. Make crypto/sha1.c compatible with these legacy drivers by adding export_core() and import_core() methods to it. Reported-by: Giovanni Cabiddu Reported-by: Ovidiu Panait Closes: https://lore.kernel.org/r/aLSnCc9Ws5L9y+8X@gcabiddu-mobl.ger.corp.i= ntel.com Fixes: b10a74abcfc5 ("crypto: sha1 - Use same state format as legacy driver= s") Signed-off-by: Eric Biggers Tested-by: Ovidiu Panait --- crypto/sha1.c | 39 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 39 insertions(+) diff --git a/crypto/sha1.c b/crypto/sha1.c index ecef4bf2d9c00..4fbf61cf03709 100644 --- a/crypto/sha1.c +++ b/crypto/sha1.c @@ -47,10 +47,22 @@ static int __crypto_sha1_import(struct sha1_ctx *ctx, c= onst void *in) p +=3D sizeof(*ctx); ctx->bytecount +=3D *p; return 0; } =20 +static int __crypto_sha1_export_core(const struct sha1_ctx *ctx, void *out) +{ + memcpy(out, ctx, offsetof(struct sha1_ctx, buf)); + return 0; +} + +static int __crypto_sha1_import_core(struct sha1_ctx *ctx, const void *in) +{ + memcpy(ctx, in, offsetof(struct sha1_ctx, buf)); + return 0; +} + const u8 sha1_zero_message_hash[SHA1_DIGEST_SIZE] =3D { 0xda, 0x39, 0xa3, 0xee, 0x5e, 0x6b, 0x4b, 0x0d, 0x32, 0x55, 0xbf, 0xef, 0x95, 0x60, 0x18, 0x90, 0xaf, 0xd8, 0x07, 0x09 }; @@ -92,10 +104,20 @@ static int crypto_sha1_export(struct shash_desc *desc,= void *out) static int crypto_sha1_import(struct shash_desc *desc, const void *in) { return __crypto_sha1_import(SHA1_CTX(desc), in); } =20 +static int crypto_sha1_export_core(struct shash_desc *desc, void *out) +{ + return __crypto_sha1_export_core(SHA1_CTX(desc), out); +} + +static int crypto_sha1_import_core(struct shash_desc *desc, const void *in) +{ + return __crypto_sha1_import_core(SHA1_CTX(desc), in); +} + #define HMAC_SHA1_KEY(tfm) ((struct hmac_sha1_key *)crypto_shash_ctx(tfm)) #define HMAC_SHA1_CTX(desc) ((struct hmac_sha1_ctx *)shash_desc_ctx(desc)) =20 static int crypto_hmac_sha1_setkey(struct crypto_shash *tfm, const u8 *raw_key, unsigned int keylen) @@ -141,10 +163,23 @@ static int crypto_hmac_sha1_import(struct shash_desc = *desc, const void *in) =20 ctx->ostate =3D HMAC_SHA1_KEY(desc->tfm)->ostate; return __crypto_sha1_import(&ctx->sha_ctx, in); } =20 +static int crypto_hmac_sha1_export_core(struct shash_desc *desc, void *out) +{ + return __crypto_sha1_export_core(&HMAC_SHA1_CTX(desc)->sha_ctx, out); +} + +static int crypto_hmac_sha1_import_core(struct shash_desc *desc, const voi= d *in) +{ + struct hmac_sha1_ctx *ctx =3D HMAC_SHA1_CTX(desc); + + ctx->ostate =3D HMAC_SHA1_KEY(desc->tfm)->ostate; + return __crypto_sha1_import_core(&ctx->sha_ctx, in); +} + static struct shash_alg algs[] =3D { { .base.cra_name =3D "sha1", .base.cra_driver_name =3D "sha1-lib", .base.cra_priority =3D 300, @@ -155,10 +190,12 @@ static struct shash_alg algs[] =3D { .update =3D crypto_sha1_update, .final =3D crypto_sha1_final, .digest =3D crypto_sha1_digest, .export =3D crypto_sha1_export, .import =3D crypto_sha1_import, + .export_core =3D crypto_sha1_export_core, + .import_core =3D crypto_sha1_import_core, .descsize =3D sizeof(struct sha1_ctx), .statesize =3D SHA1_SHASH_STATE_SIZE, }, { .base.cra_name =3D "hmac(sha1)", @@ -173,10 +210,12 @@ static struct shash_alg algs[] =3D { .update =3D crypto_hmac_sha1_update, .final =3D crypto_hmac_sha1_final, .digest =3D crypto_hmac_sha1_digest, .export =3D crypto_hmac_sha1_export, .import =3D crypto_hmac_sha1_import, + .export_core =3D crypto_hmac_sha1_export_core, + .import_core =3D crypto_hmac_sha1_import_core, .descsize =3D sizeof(struct hmac_sha1_ctx), .statesize =3D SHA1_SHASH_STATE_SIZE, }, }; =20 --=20 2.50.1