From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pegase1.c-s.fr (pegase1.c-s.fr [93.17.236.30]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 772F6165F13; Mon, 4 Aug 2025 17:50:35 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=93.17.236.30 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754329840; cv=none; b=jcIOxnl3cN/cVjWvBiIPXR/YrCiPuW8a1XeF41c/N5mw5geckC9tKdQ1yu8IkOEl4LIoZVrcvENu9dWNoNcSx8UeYGuO+ZcwznEUbWmo8qwfNqeYkTH1x5fJj0Py1uIfeSdia7X67+heCoiO1A/2o9bDilHtGlI8d7smtnuPbkM= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754329840; c=relaxed/simple; bh=TvafiNB5a75Pe+v2XH1p6swclI/U4WUPJjAsmEyX50A=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=IAShOJOdRQcutCSR+VsQZVxviHpxqAh4pjt3Yl3LFJbgqdiz/xaKc7eb2HEm7CtcfFbhrd3JZbGs20oGAn6LDSnbOe0pKXgDhcfRSQ6W/MXjp0YV8slnKpCqa8B+pw2KLM5+fz8dE7AJup14LAbV0JpTQ0+9oZ6Wd8Fab83NpsQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=csgroup.eu; spf=pass smtp.mailfrom=csgroup.eu; arc=none smtp.client-ip=93.17.236.30 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=csgroup.eu Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=csgroup.eu Received: from localhost (mailhub3.si.c-s.fr [192.168.12.233]) by localhost (Postfix) with ESMTP id 4bwkQc5NqHz9s2l; Mon, 4 Aug 2025 19:42:16 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from pegase1.c-s.fr ([192.168.12.234]) by localhost (pegase1.c-s.fr [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id DFriRqwcCTjp; Mon, 4 Aug 2025 19:42:16 +0200 (CEST) Received: from messagerie.si.c-s.fr (messagerie.si.c-s.fr [192.168.25.192]) by pegase1.c-s.fr (Postfix) with ESMTP id 4bwkQc4W37z9s28; Mon, 4 Aug 2025 19:42:16 +0200 (CEST) Received: from localhost (localhost [127.0.0.1]) by messagerie.si.c-s.fr (Postfix) with ESMTP id 8D74C8B765; Mon, 4 Aug 2025 19:42:16 +0200 (CEST) X-Virus-Scanned: amavisd-new at c-s.fr Received: from messagerie.si.c-s.fr ([127.0.0.1]) by localhost (messagerie.si.c-s.fr [127.0.0.1]) (amavisd-new, port 10023) with ESMTP id 0AKjQet0pvHO; Mon, 4 Aug 2025 19:42:16 +0200 (CEST) Received: from [192.168.235.99] (unknown [192.168.235.99]) by messagerie.si.c-s.fr (Postfix) with ESMTP id EF5DD8B763; Mon, 4 Aug 2025 19:42:15 +0200 (CEST) Message-ID: <593b6997-9da4-439c-ba82-84e8bb2ed980@csgroup.eu> Date: Mon, 4 Aug 2025 19:42:15 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 3/7] crypto: powerpc/md5 - Remove PowerPC optimized MD5 code To: Eric Biggers , linux-crypto@vger.kernel.org Cc: linux-kernel@vger.kernel.org, Ard Biesheuvel , "Jason A . Donenfeld" , linux-mips@vger.kernel.org, linuxppc-dev@lists.ozlabs.org, sparclinux@vger.kernel.org References: <20250803204433.75703-1-ebiggers@kernel.org> <20250803204433.75703-4-ebiggers@kernel.org> From: Christophe Leroy Content-Language: fr-FR In-Reply-To: <20250803204433.75703-4-ebiggers@kernel.org> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 8bit Le 03/08/2025 à 22:44, Eric Biggers a écrit : > MD5 is insecure, is no longer commonly used, and has never been > optimized for the most common architectures in the kernel. Only mips, > powerpc, and sparc have optimized MD5 code in the kernel. Of these, > only the powerpc one is actually testable in QEMU. The mips one works > only on Cavium Octeon SoCs. > > Taken together, it's clear that it's time to retire these additional MD5 > implementations, and focus maintenance on the MD5 generic C code. Sorry, for me it is not that clear. Even if MD5 is depracated we still have several applications that use MD5 for various reasons on our boards. I ran the test on kernel v6.16 with following file: # ls -l avion.au -rw------- 1 root root 12130159 Jan 1 1970 avion.au With CONFIG_CRYPTO_MD5_PPC: # time md5sum avion.au 6513851d6109d42477b20cd56bf57f28 avion.au real 0m 1.02s user 0m 0.01s sys 0m 1.01s Without CONFIG_CRYPTO_MD5_PPC: # time md5sum avion.au 6513851d6109d42477b20cd56bf57f28 avion.au real 0m 1.35s user 0m 0.01s sys 0m 1.34s I think the difference is big enough to consider keeping optimised MD5 code. Christophe > > This commit removes the PowerPC optimized MD5 code. > > Signed-off-by: Eric Biggers > --- > arch/powerpc/configs/powernv_defconfig | 1 - > arch/powerpc/configs/ppc64_defconfig | 1 - > arch/powerpc/crypto/Kconfig | 8 - > arch/powerpc/crypto/Makefile | 2 - > arch/powerpc/crypto/md5-asm.S | 235 ------------------------- > arch/powerpc/crypto/md5-glue.c | 99 ----------- > 6 files changed, 346 deletions(-) > delete mode 100644 arch/powerpc/crypto/md5-asm.S > delete mode 100644 arch/powerpc/crypto/md5-glue.c > > diff --git a/arch/powerpc/configs/powernv_defconfig b/arch/powerpc/configs/powernv_defconfig > index d06388b0f66e3..bd4685612de6d 100644 > --- a/arch/powerpc/configs/powernv_defconfig > +++ b/arch/powerpc/configs/powernv_defconfig > @@ -318,11 +318,10 @@ CONFIG_FTR_FIXUP_SELFTEST=y > CONFIG_MSI_BITMAP_SELFTEST=y > CONFIG_XMON=y > CONFIG_CRYPTO_BENCHMARK=m > CONFIG_CRYPTO_PCBC=m > CONFIG_CRYPTO_HMAC=y > -CONFIG_CRYPTO_MD5_PPC=m > CONFIG_CRYPTO_MICHAEL_MIC=m > CONFIG_CRYPTO_SHA256=y > CONFIG_CRYPTO_WP512=m > CONFIG_CRYPTO_ANUBIS=m > CONFIG_CRYPTO_BLOWFISH=m > diff --git a/arch/powerpc/configs/ppc64_defconfig b/arch/powerpc/configs/ppc64_defconfig > index ce34597e9f3e1..2d92c11eea7e4 100644 > --- a/arch/powerpc/configs/ppc64_defconfig > +++ b/arch/powerpc/configs/ppc64_defconfig > @@ -385,11 +385,10 @@ CONFIG_CRYPTO_TWOFISH=m > CONFIG_CRYPTO_PCBC=m > CONFIG_CRYPTO_MICHAEL_MIC=m > CONFIG_CRYPTO_SHA256=y > CONFIG_CRYPTO_WP512=m > CONFIG_CRYPTO_LZO=m > -CONFIG_CRYPTO_MD5_PPC=m > CONFIG_CRYPTO_AES_GCM_P10=m > CONFIG_CRYPTO_DEV_NX=y > CONFIG_CRYPTO_DEV_NX_ENCRYPT=m > CONFIG_CRYPTO_DEV_VMX=y > CONFIG_SYSTEM_TRUSTED_KEYRING=y > diff --git a/arch/powerpc/crypto/Kconfig b/arch/powerpc/crypto/Kconfig > index cfe39fc221cf8..f4b779c7352de 100644 > --- a/arch/powerpc/crypto/Kconfig > +++ b/arch/powerpc/crypto/Kconfig > @@ -13,18 +13,10 @@ config CRYPTO_CURVE25519_PPC64 > Curve25519 algorithm > > Architecture: PowerPC64 > - Little-endian > > -config CRYPTO_MD5_PPC > - tristate "Digests: MD5" > - select CRYPTO_HASH > - help > - MD5 message digest algorithm (RFC1321) > - > - Architecture: powerpc > - > config CRYPTO_AES_PPC_SPE > tristate "Ciphers: AES, modes: ECB/CBC/CTR/XTS (SPE)" > depends on SPE > select CRYPTO_SKCIPHER > help > diff --git a/arch/powerpc/crypto/Makefile b/arch/powerpc/crypto/Makefile > index bc8fd27344b8b..9eb59dce67f36 100644 > --- a/arch/powerpc/crypto/Makefile > +++ b/arch/powerpc/crypto/Makefile > @@ -4,17 +4,15 @@ > # > # Arch-specific CryptoAPI modules. > # > > obj-$(CONFIG_CRYPTO_AES_PPC_SPE) += aes-ppc-spe.o > -obj-$(CONFIG_CRYPTO_MD5_PPC) += md5-ppc.o > obj-$(CONFIG_CRYPTO_AES_GCM_P10) += aes-gcm-p10-crypto.o > obj-$(CONFIG_CRYPTO_DEV_VMX_ENCRYPT) += vmx-crypto.o > obj-$(CONFIG_CRYPTO_CURVE25519_PPC64) += curve25519-ppc64le.o > > aes-ppc-spe-y := aes-spe-core.o aes-spe-keys.o aes-tab-4k.o aes-spe-modes.o aes-spe-glue.o > -md5-ppc-y := md5-asm.o md5-glue.o > aes-gcm-p10-crypto-y := aes-gcm-p10-glue.o aes-gcm-p10.o ghashp10-ppc.o aesp10-ppc.o > vmx-crypto-objs := vmx.o aesp8-ppc.o ghashp8-ppc.o aes.o aes_cbc.o aes_ctr.o aes_xts.o ghash.o > curve25519-ppc64le-y := curve25519-ppc64le-core.o curve25519-ppc64le_asm.o > > ifeq ($(CONFIG_CPU_LITTLE_ENDIAN),y) > diff --git a/arch/powerpc/crypto/md5-asm.S b/arch/powerpc/crypto/md5-asm.S > deleted file mode 100644 > index fa6bc440cf4ac..0000000000000 > --- a/arch/powerpc/crypto/md5-asm.S > +++ /dev/null > @@ -1,235 +0,0 @@ > -/* SPDX-License-Identifier: GPL-2.0-or-later */ > -/* > - * Fast MD5 implementation for PPC > - * > - * Copyright (c) 2015 Markus Stockhausen > - */ > -#include > -#include > -#include > - > -#define rHP r3 > -#define rWP r4 > - > -#define rH0 r0 > -#define rH1 r6 > -#define rH2 r7 > -#define rH3 r5 > - > -#define rW00 r8 > -#define rW01 r9 > -#define rW02 r10 > -#define rW03 r11 > -#define rW04 r12 > -#define rW05 r14 > -#define rW06 r15 > -#define rW07 r16 > -#define rW08 r17 > -#define rW09 r18 > -#define rW10 r19 > -#define rW11 r20 > -#define rW12 r21 > -#define rW13 r22 > -#define rW14 r23 > -#define rW15 r24 > - > -#define rT0 r25 > -#define rT1 r26 > - > -#define INITIALIZE \ > - PPC_STLU r1,-INT_FRAME_SIZE(r1); \ > - SAVE_GPRS(14, 26, r1) /* push registers onto stack */ > - > -#define FINALIZE \ > - REST_GPRS(14, 26, r1); /* pop registers from stack */ \ > - addi r1,r1,INT_FRAME_SIZE > - > -#ifdef __BIG_ENDIAN__ > -#define LOAD_DATA(reg, off) \ > - lwbrx reg,0,rWP; /* load data */ > -#define INC_PTR \ > - addi rWP,rWP,4; /* increment per word */ > -#define NEXT_BLOCK /* nothing to do */ > -#else > -#define LOAD_DATA(reg, off) \ > - lwz reg,off(rWP); /* load data */ > -#define INC_PTR /* nothing to do */ > -#define NEXT_BLOCK \ > - addi rWP,rWP,64; /* increment per block */ > -#endif > - > -#define R_00_15(a, b, c, d, w0, w1, p, q, off, k0h, k0l, k1h, k1l) \ > - LOAD_DATA(w0, off) /* W */ \ > - and rT0,b,c; /* 1: f = b and c */ \ > - INC_PTR /* ptr++ */ \ > - andc rT1,d,b; /* 1: f' = ~b and d */ \ > - LOAD_DATA(w1, off+4) /* W */ \ > - or rT0,rT0,rT1; /* 1: f = f or f' */ \ > - addi w0,w0,k0l; /* 1: wk = w + k */ \ > - add a,a,rT0; /* 1: a = a + f */ \ > - addis w0,w0,k0h; /* 1: wk = w + k' */ \ > - addis w1,w1,k1h; /* 2: wk = w + k */ \ > - add a,a,w0; /* 1: a = a + wk */ \ > - addi w1,w1,k1l; /* 2: wk = w + k' */ \ > - rotrwi a,a,p; /* 1: a = a rotl x */ \ > - add d,d,w1; /* 2: a = a + wk */ \ > - add a,a,b; /* 1: a = a + b */ \ > - and rT0,a,b; /* 2: f = b and c */ \ > - andc rT1,c,a; /* 2: f' = ~b and d */ \ > - or rT0,rT0,rT1; /* 2: f = f or f' */ \ > - add d,d,rT0; /* 2: a = a + f */ \ > - INC_PTR /* ptr++ */ \ > - rotrwi d,d,q; /* 2: a = a rotl x */ \ > - add d,d,a; /* 2: a = a + b */ > - > -#define R_16_31(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \ > - andc rT0,c,d; /* 1: f = c and ~d */ \ > - and rT1,b,d; /* 1: f' = b and d */ \ > - addi w0,w0,k0l; /* 1: wk = w + k */ \ > - or rT0,rT0,rT1; /* 1: f = f or f' */ \ > - addis w0,w0,k0h; /* 1: wk = w + k' */ \ > - add a,a,rT0; /* 1: a = a + f */ \ > - addi w1,w1,k1l; /* 2: wk = w + k */ \ > - add a,a,w0; /* 1: a = a + wk */ \ > - addis w1,w1,k1h; /* 2: wk = w + k' */ \ > - andc rT0,b,c; /* 2: f = c and ~d */ \ > - rotrwi a,a,p; /* 1: a = a rotl x */ \ > - add a,a,b; /* 1: a = a + b */ \ > - add d,d,w1; /* 2: a = a + wk */ \ > - and rT1,a,c; /* 2: f' = b and d */ \ > - or rT0,rT0,rT1; /* 2: f = f or f' */ \ > - add d,d,rT0; /* 2: a = a + f */ \ > - rotrwi d,d,q; /* 2: a = a rotl x */ \ > - add d,d,a; /* 2: a = a +b */ > - > -#define R_32_47(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \ > - xor rT0,b,c; /* 1: f' = b xor c */ \ > - addi w0,w0,k0l; /* 1: wk = w + k */ \ > - xor rT1,rT0,d; /* 1: f = f xor f' */ \ > - addis w0,w0,k0h; /* 1: wk = w + k' */ \ > - add a,a,rT1; /* 1: a = a + f */ \ > - addi w1,w1,k1l; /* 2: wk = w + k */ \ > - add a,a,w0; /* 1: a = a + wk */ \ > - addis w1,w1,k1h; /* 2: wk = w + k' */ \ > - rotrwi a,a,p; /* 1: a = a rotl x */ \ > - add d,d,w1; /* 2: a = a + wk */ \ > - add a,a,b; /* 1: a = a + b */ \ > - xor rT1,rT0,a; /* 2: f = b xor f' */ \ > - add d,d,rT1; /* 2: a = a + f */ \ > - rotrwi d,d,q; /* 2: a = a rotl x */ \ > - add d,d,a; /* 2: a = a + b */ > - > -#define R_48_63(a, b, c, d, w0, w1, p, q, k0h, k0l, k1h, k1l) \ > - addi w0,w0,k0l; /* 1: w = w + k */ \ > - orc rT0,b,d; /* 1: f = b or ~d */ \ > - addis w0,w0,k0h; /* 1: w = w + k' */ \ > - xor rT0,rT0,c; /* 1: f = f xor c */ \ > - add a,a,w0; /* 1: a = a + wk */ \ > - addi w1,w1,k1l; /* 2: w = w + k */ \ > - add a,a,rT0; /* 1: a = a + f */ \ > - addis w1,w1,k1h; /* 2: w = w + k' */ \ > - rotrwi a,a,p; /* 1: a = a rotl x */ \ > - add a,a,b; /* 1: a = a + b */ \ > - orc rT0,a,c; /* 2: f = b or ~d */ \ > - add d,d,w1; /* 2: a = a + wk */ \ > - xor rT0,rT0,b; /* 2: f = f xor c */ \ > - add d,d,rT0; /* 2: a = a + f */ \ > - rotrwi d,d,q; /* 2: a = a rotl x */ \ > - add d,d,a; /* 2: a = a + b */ > - > -_GLOBAL(ppc_md5_transform) > - INITIALIZE > - > - mtctr r5 > - lwz rH0,0(rHP) > - lwz rH1,4(rHP) > - lwz rH2,8(rHP) > - lwz rH3,12(rHP) > - > -ppc_md5_main: > - R_00_15(rH0, rH1, rH2, rH3, rW00, rW01, 25, 20, 0, > - 0xd76b, -23432, 0xe8c8, -18602) > - R_00_15(rH2, rH3, rH0, rH1, rW02, rW03, 15, 10, 8, > - 0x2420, 0x70db, 0xc1be, -12562) > - R_00_15(rH0, rH1, rH2, rH3, rW04, rW05, 25, 20, 16, > - 0xf57c, 0x0faf, 0x4788, -14806) > - R_00_15(rH2, rH3, rH0, rH1, rW06, rW07, 15, 10, 24, > - 0xa830, 0x4613, 0xfd47, -27391) > - R_00_15(rH0, rH1, rH2, rH3, rW08, rW09, 25, 20, 32, > - 0x6981, -26408, 0x8b45, -2129) > - R_00_15(rH2, rH3, rH0, rH1, rW10, rW11, 15, 10, 40, > - 0xffff, 0x5bb1, 0x895d, -10306) > - R_00_15(rH0, rH1, rH2, rH3, rW12, rW13, 25, 20, 48, > - 0x6b90, 0x1122, 0xfd98, 0x7193) > - R_00_15(rH2, rH3, rH0, rH1, rW14, rW15, 15, 10, 56, > - 0xa679, 0x438e, 0x49b4, 0x0821) > - > - R_16_31(rH0, rH1, rH2, rH3, rW01, rW06, 27, 23, > - 0x0d56, 0x6e0c, 0x1810, 0x6d2d) > - R_16_31(rH2, rH3, rH0, rH1, rW11, rW00, 18, 12, > - 0x9d02, -32109, 0x124c, 0x2332) > - R_16_31(rH0, rH1, rH2, rH3, rW05, rW10, 27, 23, > - 0x8ea7, 0x4a33, 0x0245, -18270) > - R_16_31(rH2, rH3, rH0, rH1, rW15, rW04, 18, 12, > - 0x8eee, -8608, 0xf258, -5095) > - R_16_31(rH0, rH1, rH2, rH3, rW09, rW14, 27, 23, > - 0x969d, -10697, 0x1cbe, -15288) > - R_16_31(rH2, rH3, rH0, rH1, rW03, rW08, 18, 12, > - 0x3317, 0x3e99, 0xdbd9, 0x7c15) > - R_16_31(rH0, rH1, rH2, rH3, rW13, rW02, 27, 23, > - 0xac4b, 0x7772, 0xd8cf, 0x331d) > - R_16_31(rH2, rH3, rH0, rH1, rW07, rW12, 18, 12, > - 0x6a28, 0x6dd8, 0x219a, 0x3b68) > - > - R_32_47(rH0, rH1, rH2, rH3, rW05, rW08, 28, 21, > - 0x29cb, 0x28e5, 0x4218, -7788) > - R_32_47(rH2, rH3, rH0, rH1, rW11, rW14, 16, 9, > - 0x473f, 0x06d1, 0x3aae, 0x3036) > - R_32_47(rH0, rH1, rH2, rH3, rW01, rW04, 28, 21, > - 0xaea1, -15134, 0x640b, -11295) > - R_32_47(rH2, rH3, rH0, rH1, rW07, rW10, 16, 9, > - 0x8f4c, 0x4887, 0xbc7c, -22499) > - R_32_47(rH0, rH1, rH2, rH3, rW13, rW00, 28, 21, > - 0x7eb8, -27199, 0x00ea, 0x6050) > - R_32_47(rH2, rH3, rH0, rH1, rW03, rW06, 16, 9, > - 0xe01a, 0x22fe, 0x4447, 0x69c5) > - R_32_47(rH0, rH1, rH2, rH3, rW09, rW12, 28, 21, > - 0xb7f3, 0x0253, 0x59b1, 0x4d5b) > - R_32_47(rH2, rH3, rH0, rH1, rW15, rW02, 16, 9, > - 0x4701, -27017, 0xc7bd, -19859) > - > - R_48_63(rH0, rH1, rH2, rH3, rW00, rW07, 26, 22, > - 0x0988, -1462, 0x4c70, -19401) > - R_48_63(rH2, rH3, rH0, rH1, rW14, rW05, 17, 11, > - 0xadaf, -5221, 0xfc99, 0x66f7) > - R_48_63(rH0, rH1, rH2, rH3, rW12, rW03, 26, 22, > - 0x7e80, -16418, 0xba1e, -25587) > - R_48_63(rH2, rH3, rH0, rH1, rW10, rW01, 17, 11, > - 0x4130, 0x380d, 0xe0c5, 0x738d) > - lwz rW00,0(rHP) > - R_48_63(rH0, rH1, rH2, rH3, rW08, rW15, 26, 22, > - 0xe837, -30770, 0xde8a, 0x69e8) > - lwz rW14,4(rHP) > - R_48_63(rH2, rH3, rH0, rH1, rW06, rW13, 17, 11, > - 0x9e79, 0x260f, 0x256d, -27941) > - lwz rW12,8(rHP) > - R_48_63(rH0, rH1, rH2, rH3, rW04, rW11, 26, 22, > - 0xab75, -20775, 0x4f9e, -28397) > - lwz rW10,12(rHP) > - R_48_63(rH2, rH3, rH0, rH1, rW02, rW09, 17, 11, > - 0x662b, 0x7c56, 0x11b2, 0x0358) > - > - add rH0,rH0,rW00 > - stw rH0,0(rHP) > - add rH1,rH1,rW14 > - stw rH1,4(rHP) > - add rH2,rH2,rW12 > - stw rH2,8(rHP) > - add rH3,rH3,rW10 > - stw rH3,12(rHP) > - NEXT_BLOCK > - > - bdnz ppc_md5_main > - > - FINALIZE > - blr > diff --git a/arch/powerpc/crypto/md5-glue.c b/arch/powerpc/crypto/md5-glue.c > deleted file mode 100644 > index 204440a90cd84..0000000000000 > --- a/arch/powerpc/crypto/md5-glue.c > +++ /dev/null > @@ -1,99 +0,0 @@ > -// SPDX-License-Identifier: GPL-2.0-or-later > -/* > - * Glue code for MD5 implementation for PPC assembler > - * > - * Based on generic implementation. > - * > - * Copyright (c) 2015 Markus Stockhausen > - */ > - > -#include > -#include > -#include > -#include > -#include > - > -extern void ppc_md5_transform(u32 *state, const u8 *src, u32 blocks); > - > -static int ppc_md5_init(struct shash_desc *desc) > -{ > - struct md5_state *sctx = shash_desc_ctx(desc); > - > - sctx->hash[0] = MD5_H0; > - sctx->hash[1] = MD5_H1; > - sctx->hash[2] = MD5_H2; > - sctx->hash[3] = MD5_H3; > - sctx->byte_count = 0; > - > - return 0; > -} > - > -static int ppc_md5_update(struct shash_desc *desc, const u8 *data, > - unsigned int len) > -{ > - struct md5_state *sctx = shash_desc_ctx(desc); > - > - sctx->byte_count += round_down(len, MD5_HMAC_BLOCK_SIZE); > - ppc_md5_transform(sctx->hash, data, len >> 6); > - return len - round_down(len, MD5_HMAC_BLOCK_SIZE); > -} > - > -static int ppc_md5_finup(struct shash_desc *desc, const u8 *src, > - unsigned int offset, u8 *out) > -{ > - struct md5_state *sctx = shash_desc_ctx(desc); > - __le64 block[MD5_BLOCK_WORDS] = {}; > - u8 *p = memcpy(block, src, offset); > - __le32 *dst = (__le32 *)out; > - __le64 *pbits; > - > - src = p; > - p += offset; > - *p++ = 0x80; > - sctx->byte_count += offset; > - pbits = &block[(MD5_BLOCK_WORDS / (offset > 55 ? 1 : 2)) - 1]; > - *pbits = cpu_to_le64(sctx->byte_count << 3); > - ppc_md5_transform(sctx->hash, src, (pbits - block + 1) / 8); > - memzero_explicit(block, sizeof(block)); > - > - dst[0] = cpu_to_le32(sctx->hash[0]); > - dst[1] = cpu_to_le32(sctx->hash[1]); > - dst[2] = cpu_to_le32(sctx->hash[2]); > - dst[3] = cpu_to_le32(sctx->hash[3]); > - return 0; > -} > - > -static struct shash_alg alg = { > - .digestsize = MD5_DIGEST_SIZE, > - .init = ppc_md5_init, > - .update = ppc_md5_update, > - .finup = ppc_md5_finup, > - .descsize = MD5_STATE_SIZE, > - .base = { > - .cra_name = "md5", > - .cra_driver_name= "md5-ppc", > - .cra_priority = 200, > - .cra_flags = CRYPTO_AHASH_ALG_BLOCK_ONLY, > - .cra_blocksize = MD5_HMAC_BLOCK_SIZE, > - .cra_module = THIS_MODULE, > - } > -}; > - > -static int __init ppc_md5_mod_init(void) > -{ > - return crypto_register_shash(&alg); > -} > - > -static void __exit ppc_md5_mod_fini(void) > -{ > - crypto_unregister_shash(&alg); > -} > - > -module_init(ppc_md5_mod_init); > -module_exit(ppc_md5_mod_fini); > - > -MODULE_LICENSE("GPL"); > -MODULE_DESCRIPTION("MD5 Secure Hash Algorithm, PPC assembler"); > - > -MODULE_ALIAS_CRYPTO("md5"); > -MODULE_ALIAS_CRYPTO("md5-ppc");