crypto: sha256: switch to linux implementation
Signed-off-by: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com> Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
This commit is contained in:
Jean-Christophe PLAGNIOL-VILLARD
Sascha Hauer
parent
144e104a1e
commit
2332a219da
572
crypto/sha2.c
572
crypto/sha2.c
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@ -1,17 +1,20 @@
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/*
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* FIPS-180-2 compliant SHA-256 implementation
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* Cryptographic API.
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*
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* Copyright (C) 2001-2003 Christophe Devine
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* SHA-256, as specified in
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* http://csrc.nist.gov/groups/STM/cavp/documents/shs/sha256-384-512.pdf
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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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* SHA-256 code by Jean-Luc Cooke <jlcooke@certainkey.com>.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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* Copyright (c) Jean-Luc Cooke <jlcooke@certainkey.com>
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* Copyright (c) Andrew McDonald <andrew@mcdonald.org.uk>
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* Copyright (c) 2002 James Morris <jmorris@intercode.com.au>
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* SHA224 Support Copyright 2007 Intel Corporation <jonathan.lynch@intel.com>
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*
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* This program is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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* any later version.
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*
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*/
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@ -19,281 +22,302 @@
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#include <digest.h>
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#include <init.h>
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#include <linux/string.h>
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#include <asm/unaligned.h>
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#include <asm/byteorder.h>
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#include <crypto/sha.h>
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#include <crypto/internal.h>
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#define SHA224_SUM_LEN 28
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#define SHA256_SUM_LEN 32
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typedef struct {
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uint32_t total[2];
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uint32_t state[8];
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uint8_t buffer[64];
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int is224;
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} sha2_context;
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/*
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* 32-bit integer manipulation macros (big endian)
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*/
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#define GET_UINT32_BE(n,b,i) (n) = be32_to_cpu(((uint32_t*)(b))[i / 4])
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#define PUT_UINT32_BE(n,b,i) ((uint32_t*)(b))[i / 4] = cpu_to_be32(n)
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static void sha2_starts(sha2_context *ctx, int is224)
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static inline u32 Ch(u32 x, u32 y, u32 z)
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{
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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#ifdef CONFIG_SHA256
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if (is224 == 0) {
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/* SHA-256 */
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ctx->state[0] = 0x6A09E667;
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ctx->state[1] = 0xBB67AE85;
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ctx->state[2] = 0x3C6EF372;
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ctx->state[3] = 0xA54FF53A;
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ctx->state[4] = 0x510E527F;
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ctx->state[5] = 0x9B05688C;
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ctx->state[6] = 0x1F83D9AB;
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ctx->state[7] = 0x5BE0CD19;
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}
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#endif
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#ifdef CONFIG_SHA224
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if (is224 == 1) {
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/* SHA-224 */
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ctx->state[0] = 0xC1059ED8;
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ctx->state[1] = 0x367CD507;
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ctx->state[2] = 0x3070DD17;
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ctx->state[3] = 0xF70E5939;
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ctx->state[4] = 0xFFC00B31;
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ctx->state[5] = 0x68581511;
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ctx->state[6] = 0x64F98FA7;
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ctx->state[7] = 0xBEFA4FA4;
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}
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#endif
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ctx->is224 = is224;
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return z ^ (x & (y ^ z));
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}
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static void sha2_process(sha2_context *ctx, const uint8_t data[64])
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static inline u32 Maj(u32 x, u32 y, u32 z)
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{
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uint32_t temp1, temp2;
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uint32_t W[64];
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uint32_t A, B, C, D, E, F, G, H;
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GET_UINT32_BE(W[0], data, 0);
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GET_UINT32_BE(W[1], data, 4);
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GET_UINT32_BE(W[2], data, 8);
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GET_UINT32_BE(W[3], data, 12);
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GET_UINT32_BE(W[4], data, 16);
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GET_UINT32_BE(W[5], data, 20);
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GET_UINT32_BE(W[6], data, 24);
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GET_UINT32_BE(W[7], data, 28);
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GET_UINT32_BE(W[8], data, 32);
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GET_UINT32_BE(W[9], data, 36);
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GET_UINT32_BE(W[10], data, 40);
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GET_UINT32_BE(W[11], data, 44);
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GET_UINT32_BE(W[12], data, 48);
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GET_UINT32_BE(W[13], data, 52);
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GET_UINT32_BE(W[14], data, 56);
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GET_UINT32_BE(W[15], data, 60);
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#define SHR(x,n) ((x & 0xFFFFFFFF) >> n)
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#define ROTR(x,n) (SHR(x,n) | (x << (32 - n)))
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#define S0(x) (ROTR(x, 7) ^ ROTR(x,18) ^ SHR(x, 3))
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#define S1(x) (ROTR(x,17) ^ ROTR(x,19) ^ SHR(x,10))
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#define S2(x) (ROTR(x, 2) ^ ROTR(x,13) ^ ROTR(x,22))
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#define S3(x) (ROTR(x, 6) ^ ROTR(x,11) ^ ROTR(x,25))
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#define F0(x,y,z) ((x & y) | (z & (x | y)))
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#define F1(x,y,z) (z ^ (x & (y ^ z)))
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#define R(t) \
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( \
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W[t] = S1(W[t - 2]) + W[t - 7] + \
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S0(W[t - 15]) + W[t - 16] \
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)
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#define P(a,b,c,d,e,f,g,h,x,K) { \
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temp1 = h + S3(e) + F1(e,f,g) + K + x; \
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temp2 = S2(a) + F0(a,b,c); \
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d += temp1; h = temp1 + temp2; \
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return (x & y) | (z & (x | y));
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}
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A = ctx->state[0];
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B = ctx->state[1];
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C = ctx->state[2];
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D = ctx->state[3];
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E = ctx->state[4];
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F = ctx->state[5];
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G = ctx->state[6];
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H = ctx->state[7];
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#define e0(x) (ror32(x, 2) ^ ror32(x,13) ^ ror32(x,22))
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#define e1(x) (ror32(x, 6) ^ ror32(x,11) ^ ror32(x,25))
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#define s0(x) (ror32(x, 7) ^ ror32(x,18) ^ (x >> 3))
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#define s1(x) (ror32(x,17) ^ ror32(x,19) ^ (x >> 10))
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P(A, B, C, D, E, F, G, H, W[0], 0x428A2F98);
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P(H, A, B, C, D, E, F, G, W[1], 0x71374491);
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P(G, H, A, B, C, D, E, F, W[2], 0xB5C0FBCF);
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P(F, G, H, A, B, C, D, E, W[3], 0xE9B5DBA5);
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P(E, F, G, H, A, B, C, D, W[4], 0x3956C25B);
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P(D, E, F, G, H, A, B, C, W[5], 0x59F111F1);
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P(C, D, E, F, G, H, A, B, W[6], 0x923F82A4);
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P(B, C, D, E, F, G, H, A, W[7], 0xAB1C5ED5);
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P(A, B, C, D, E, F, G, H, W[8], 0xD807AA98);
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P(H, A, B, C, D, E, F, G, W[9], 0x12835B01);
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P(G, H, A, B, C, D, E, F, W[10], 0x243185BE);
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P(F, G, H, A, B, C, D, E, W[11], 0x550C7DC3);
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P(E, F, G, H, A, B, C, D, W[12], 0x72BE5D74);
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P(D, E, F, G, H, A, B, C, W[13], 0x80DEB1FE);
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P(C, D, E, F, G, H, A, B, W[14], 0x9BDC06A7);
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P(B, C, D, E, F, G, H, A, W[15], 0xC19BF174);
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P(A, B, C, D, E, F, G, H, R(16), 0xE49B69C1);
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P(H, A, B, C, D, E, F, G, R(17), 0xEFBE4786);
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P(G, H, A, B, C, D, E, F, R(18), 0x0FC19DC6);
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P(F, G, H, A, B, C, D, E, R(19), 0x240CA1CC);
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P(E, F, G, H, A, B, C, D, R(20), 0x2DE92C6F);
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P(D, E, F, G, H, A, B, C, R(21), 0x4A7484AA);
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P(C, D, E, F, G, H, A, B, R(22), 0x5CB0A9DC);
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P(B, C, D, E, F, G, H, A, R(23), 0x76F988DA);
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P(A, B, C, D, E, F, G, H, R(24), 0x983E5152);
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P(H, A, B, C, D, E, F, G, R(25), 0xA831C66D);
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P(G, H, A, B, C, D, E, F, R(26), 0xB00327C8);
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P(F, G, H, A, B, C, D, E, R(27), 0xBF597FC7);
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P(E, F, G, H, A, B, C, D, R(28), 0xC6E00BF3);
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P(D, E, F, G, H, A, B, C, R(29), 0xD5A79147);
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P(C, D, E, F, G, H, A, B, R(30), 0x06CA6351);
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P(B, C, D, E, F, G, H, A, R(31), 0x14292967);
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P(A, B, C, D, E, F, G, H, R(32), 0x27B70A85);
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P(H, A, B, C, D, E, F, G, R(33), 0x2E1B2138);
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P(G, H, A, B, C, D, E, F, R(34), 0x4D2C6DFC);
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P(F, G, H, A, B, C, D, E, R(35), 0x53380D13);
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P(E, F, G, H, A, B, C, D, R(36), 0x650A7354);
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P(D, E, F, G, H, A, B, C, R(37), 0x766A0ABB);
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P(C, D, E, F, G, H, A, B, R(38), 0x81C2C92E);
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P(B, C, D, E, F, G, H, A, R(39), 0x92722C85);
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P(A, B, C, D, E, F, G, H, R(40), 0xA2BFE8A1);
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P(H, A, B, C, D, E, F, G, R(41), 0xA81A664B);
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P(G, H, A, B, C, D, E, F, R(42), 0xC24B8B70);
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P(F, G, H, A, B, C, D, E, R(43), 0xC76C51A3);
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P(E, F, G, H, A, B, C, D, R(44), 0xD192E819);
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P(D, E, F, G, H, A, B, C, R(45), 0xD6990624);
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P(C, D, E, F, G, H, A, B, R(46), 0xF40E3585);
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P(B, C, D, E, F, G, H, A, R(47), 0x106AA070);
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P(A, B, C, D, E, F, G, H, R(48), 0x19A4C116);
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P(H, A, B, C, D, E, F, G, R(49), 0x1E376C08);
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P(G, H, A, B, C, D, E, F, R(50), 0x2748774C);
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P(F, G, H, A, B, C, D, E, R(51), 0x34B0BCB5);
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P(E, F, G, H, A, B, C, D, R(52), 0x391C0CB3);
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P(D, E, F, G, H, A, B, C, R(53), 0x4ED8AA4A);
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P(C, D, E, F, G, H, A, B, R(54), 0x5B9CCA4F);
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P(B, C, D, E, F, G, H, A, R(55), 0x682E6FF3);
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P(A, B, C, D, E, F, G, H, R(56), 0x748F82EE);
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P(H, A, B, C, D, E, F, G, R(57), 0x78A5636F);
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P(G, H, A, B, C, D, E, F, R(58), 0x84C87814);
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P(F, G, H, A, B, C, D, E, R(59), 0x8CC70208);
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P(E, F, G, H, A, B, C, D, R(60), 0x90BEFFFA);
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P(D, E, F, G, H, A, B, C, R(61), 0xA4506CEB);
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P(C, D, E, F, G, H, A, B, R(62), 0xBEF9A3F7);
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P(B, C, D, E, F, G, H, A, R(63), 0xC67178F2);
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ctx->state[0] += A;
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ctx->state[1] += B;
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ctx->state[2] += C;
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ctx->state[3] += D;
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ctx->state[4] += E;
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ctx->state[5] += F;
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ctx->state[6] += G;
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ctx->state[7] += H;
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}
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static void sha2_update(sha2_context *ctx, const uint8_t *input, size_t length)
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static inline void LOAD_OP(int I, u32 *W, const u8 *input)
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{
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size_t fill;
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uint32_t left;
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if (length == 0)
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return;
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left = ctx->total[0] & 0x3F;
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fill = 64 - left;
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ctx->total[0] += (uint32_t)length;
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ctx->total[0] &= 0xFFFFFFFF;
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if (ctx->total[0] < (uint32_t)length)
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ctx->total[1]++;
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if (left && length >= fill) {
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memcpy((void *) (ctx->buffer + left), (void *) input, fill);
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sha2_process(ctx, ctx->buffer);
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length -= fill;
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input += fill;
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left = 0;
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}
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while (length >= 64) {
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sha2_process(ctx, input);
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length -= 64;
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input += 64;
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}
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if (length)
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memcpy((void *) (ctx->buffer + left), (void *) input, length);
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W[I] = get_unaligned_be32((__u32 *)input + I);
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}
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static const uint8_t sha2_padding[64] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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static void sha2_finish(sha2_context *ctx, uint8_t digest[32])
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static inline void BLEND_OP(int I, u32 *W)
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{
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uint32_t last, padn;
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uint32_t high, low;
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uint8_t msglen[8];
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high = ((ctx->total[0] >> 29)
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| (ctx->total[1] << 3));
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low = (ctx->total[0] << 3);
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PUT_UINT32_BE(high, msglen, 0);
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PUT_UINT32_BE(low, msglen, 4);
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last = ctx->total[0] & 0x3F;
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padn = (last < 56) ? (56 - last) : (120 - last);
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sha2_update(ctx, sha2_padding, padn);
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sha2_update(ctx, msglen, 8);
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PUT_UINT32_BE(ctx->state[0], digest, 0);
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PUT_UINT32_BE(ctx->state[1], digest, 4);
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PUT_UINT32_BE(ctx->state[2], digest, 8);
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PUT_UINT32_BE(ctx->state[3], digest, 12);
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PUT_UINT32_BE(ctx->state[4], digest, 16);
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PUT_UINT32_BE(ctx->state[5], digest, 20);
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PUT_UINT32_BE(ctx->state[6], digest, 24);
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if (!ctx->is224)
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PUT_UINT32_BE(ctx->state[7], digest, 28);
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W[I] = s1(W[I-2]) + W[I-7] + s0(W[I-15]) + W[I-16];
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}
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static int digest_sha2_update(struct digest *d, const void *data,
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static void sha256_transform(u32 *state, const u8 *input)
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{
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u32 a, b, c, d, e, f, g, h, t1, t2;
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u32 W[64];
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int i;
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/* load the input */
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for (i = 0; i < 16; i++)
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LOAD_OP(i, W, input);
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/* now blend */
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for (i = 16; i < 64; i++)
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BLEND_OP(i, W);
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/* load the state into our registers */
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a=state[0]; b=state[1]; c=state[2]; d=state[3];
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e=state[4]; f=state[5]; g=state[6]; h=state[7];
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/* now iterate */
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t1 = h + e1(e) + Ch(e,f,g) + 0x428a2f98 + W[ 0];
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t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
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t1 = g + e1(d) + Ch(d,e,f) + 0x71374491 + W[ 1];
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t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
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t1 = f + e1(c) + Ch(c,d,e) + 0xb5c0fbcf + W[ 2];
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t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
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t1 = e + e1(b) + Ch(b,c,d) + 0xe9b5dba5 + W[ 3];
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t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
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t1 = d + e1(a) + Ch(a,b,c) + 0x3956c25b + W[ 4];
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t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
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||||
t1 = c + e1(h) + Ch(h,a,b) + 0x59f111f1 + W[ 5];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0x923f82a4 + W[ 6];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0xab1c5ed5 + W[ 7];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0xd807aa98 + W[ 8];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0x12835b01 + W[ 9];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0x243185be + W[10];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0x550c7dc3 + W[11];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0x72be5d74 + W[12];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0x80deb1fe + W[13];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0x9bdc06a7 + W[14];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0xc19bf174 + W[15];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0xe49b69c1 + W[16];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0xefbe4786 + W[17];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0x0fc19dc6 + W[18];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0x240ca1cc + W[19];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0x2de92c6f + W[20];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0x4a7484aa + W[21];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0x5cb0a9dc + W[22];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0x76f988da + W[23];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0x983e5152 + W[24];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0xa831c66d + W[25];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0xb00327c8 + W[26];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0xbf597fc7 + W[27];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0xc6e00bf3 + W[28];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0xd5a79147 + W[29];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0x06ca6351 + W[30];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0x14292967 + W[31];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0x27b70a85 + W[32];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0x2e1b2138 + W[33];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0x4d2c6dfc + W[34];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0x53380d13 + W[35];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0x650a7354 + W[36];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0x766a0abb + W[37];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0x81c2c92e + W[38];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0x92722c85 + W[39];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0xa2bfe8a1 + W[40];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0xa81a664b + W[41];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0xc24b8b70 + W[42];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0xc76c51a3 + W[43];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0xd192e819 + W[44];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0xd6990624 + W[45];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0xf40e3585 + W[46];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0x106aa070 + W[47];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0x19a4c116 + W[48];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0x1e376c08 + W[49];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0x2748774c + W[50];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0x34b0bcb5 + W[51];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0x391c0cb3 + W[52];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0x4ed8aa4a + W[53];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0x5b9cca4f + W[54];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0x682e6ff3 + W[55];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
t1 = h + e1(e) + Ch(e,f,g) + 0x748f82ee + W[56];
|
||||
t2 = e0(a) + Maj(a,b,c); d+=t1; h=t1+t2;
|
||||
t1 = g + e1(d) + Ch(d,e,f) + 0x78a5636f + W[57];
|
||||
t2 = e0(h) + Maj(h,a,b); c+=t1; g=t1+t2;
|
||||
t1 = f + e1(c) + Ch(c,d,e) + 0x84c87814 + W[58];
|
||||
t2 = e0(g) + Maj(g,h,a); b+=t1; f=t1+t2;
|
||||
t1 = e + e1(b) + Ch(b,c,d) + 0x8cc70208 + W[59];
|
||||
t2 = e0(f) + Maj(f,g,h); a+=t1; e=t1+t2;
|
||||
t1 = d + e1(a) + Ch(a,b,c) + 0x90befffa + W[60];
|
||||
t2 = e0(e) + Maj(e,f,g); h+=t1; d=t1+t2;
|
||||
t1 = c + e1(h) + Ch(h,a,b) + 0xa4506ceb + W[61];
|
||||
t2 = e0(d) + Maj(d,e,f); g+=t1; c=t1+t2;
|
||||
t1 = b + e1(g) + Ch(g,h,a) + 0xbef9a3f7 + W[62];
|
||||
t2 = e0(c) + Maj(c,d,e); f+=t1; b=t1+t2;
|
||||
t1 = a + e1(f) + Ch(f,g,h) + 0xc67178f2 + W[63];
|
||||
t2 = e0(b) + Maj(b,c,d); e+=t1; a=t1+t2;
|
||||
|
||||
state[0] += a; state[1] += b; state[2] += c; state[3] += d;
|
||||
state[4] += e; state[5] += f; state[6] += g; state[7] += h;
|
||||
|
||||
/* clear any sensitive info... */
|
||||
a = b = c = d = e = f = g = h = t1 = t2 = 0;
|
||||
memset(W, 0, 64 * sizeof(u32));
|
||||
}
|
||||
|
||||
static int sha224_init(struct digest *desc)
|
||||
{
|
||||
struct sha256_state *sctx = digest_ctx(desc);
|
||||
sctx->state[0] = SHA224_H0;
|
||||
sctx->state[1] = SHA224_H1;
|
||||
sctx->state[2] = SHA224_H2;
|
||||
sctx->state[3] = SHA224_H3;
|
||||
sctx->state[4] = SHA224_H4;
|
||||
sctx->state[5] = SHA224_H5;
|
||||
sctx->state[6] = SHA224_H6;
|
||||
sctx->state[7] = SHA224_H7;
|
||||
sctx->count = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sha256_init(struct digest *desc)
|
||||
{
|
||||
struct sha256_state *sctx = digest_ctx(desc);
|
||||
sctx->state[0] = SHA256_H0;
|
||||
sctx->state[1] = SHA256_H1;
|
||||
sctx->state[2] = SHA256_H2;
|
||||
sctx->state[3] = SHA256_H3;
|
||||
sctx->state[4] = SHA256_H4;
|
||||
sctx->state[5] = SHA256_H5;
|
||||
sctx->state[6] = SHA256_H6;
|
||||
sctx->state[7] = SHA256_H7;
|
||||
sctx->count = 0;
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int sha256_update(struct digest *desc, const void *data,
|
||||
unsigned long len)
|
||||
{
|
||||
sha2_update(d->ctx, (uint8_t *)data, len);
|
||||
struct sha256_state *sctx = digest_ctx(desc);
|
||||
unsigned int partial, done;
|
||||
const u8 *src;
|
||||
|
||||
partial = sctx->count & 0x3f;
|
||||
sctx->count += len;
|
||||
done = 0;
|
||||
src = data;
|
||||
|
||||
if ((partial + len) > 63) {
|
||||
if (partial) {
|
||||
done = -partial;
|
||||
memcpy(sctx->buf + partial, data, done + 64);
|
||||
src = sctx->buf;
|
||||
}
|
||||
|
||||
do {
|
||||
sha256_transform(sctx->state, src);
|
||||
done += 64;
|
||||
src = data + done;
|
||||
} while (done + 63 < len);
|
||||
|
||||
partial = 0;
|
||||
}
|
||||
memcpy(sctx->buf + partial, src, len - done);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int digest_sha2_final(struct digest *d, unsigned char *md)
|
||||
static int sha256_final(struct digest *desc, u8 *out)
|
||||
{
|
||||
sha2_finish(d->ctx, md);
|
||||
struct sha256_state *sctx = digest_ctx(desc);
|
||||
__be32 *dst = (__be32 *)out;
|
||||
__be64 bits;
|
||||
unsigned int index, pad_len;
|
||||
int i;
|
||||
static const u8 padding[64] = { 0x80, };
|
||||
|
||||
/* Save number of bits */
|
||||
bits = cpu_to_be64(sctx->count << 3);
|
||||
|
||||
/* Pad out to 56 mod 64. */
|
||||
index = sctx->count & 0x3f;
|
||||
pad_len = (index < 56) ? (56 - index) : ((64+56) - index);
|
||||
sha256_update(desc, padding, pad_len);
|
||||
|
||||
/* Append length (before padding) */
|
||||
sha256_update(desc, (const u8 *)&bits, sizeof(bits));
|
||||
|
||||
/* Store state in digest */
|
||||
for (i = 0; i < 8; i++)
|
||||
dst[i] = cpu_to_be32(sctx->state[i]);
|
||||
|
||||
/* Zeroize sensitive information. */
|
||||
memset(sctx, 0, sizeof(*sctx));
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static int digest_sha224_init(struct digest *d)
|
||||
static int sha224_final(struct digest *desc, u8 *hash)
|
||||
{
|
||||
sha2_starts(d->ctx, 1);
|
||||
u8 D[SHA256_DIGEST_SIZE];
|
||||
|
||||
sha256_final(desc, D);
|
||||
|
||||
memcpy(hash, D, SHA224_DIGEST_SIZE);
|
||||
memset(D, 0, SHA256_DIGEST_SIZE);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
|
@ -305,12 +329,13 @@ static struct digest_algo m224 = {
|
|||
.priority = 0,
|
||||
},
|
||||
|
||||
.init = digest_sha224_init,
|
||||
.update = digest_sha2_update,
|
||||
.final = digest_sha2_final,
|
||||
.verify = digest_generic_verify,
|
||||
.length = SHA224_SUM_LEN,
|
||||
.ctx_length = sizeof(sha2_context),
|
||||
.init = sha224_init,
|
||||
.update = sha256_update,
|
||||
.final = sha224_final,
|
||||
.digest = digest_generic_digest,
|
||||
.verify = digest_generic_verify,
|
||||
.length = SHA224_DIGEST_SIZE,
|
||||
.ctx_length = sizeof(struct sha256_state),
|
||||
};
|
||||
|
||||
static int sha224_digest_register(void)
|
||||
|
|
@ -322,13 +347,6 @@ static int sha224_digest_register(void)
|
|||
}
|
||||
device_initcall(sha224_digest_register);
|
||||
|
||||
static int digest_sha256_init(struct digest *d)
|
||||
{
|
||||
sha2_starts(d->ctx, 0);
|
||||
|
||||
return 0;
|
||||
}
|
||||
|
||||
static struct digest_algo m256 = {
|
||||
.base = {
|
||||
.name = "sha256",
|
||||
|
|
@ -336,13 +354,13 @@ static struct digest_algo m256 = {
|
|||
.priority = 0,
|
||||
},
|
||||
|
||||
.init = digest_sha256_init,
|
||||
.update = digest_sha2_update,
|
||||
.final = digest_sha2_final,
|
||||
.digest = digest_generic_digest,
|
||||
.verify = digest_generic_verify,
|
||||
.length = SHA256_SUM_LEN,
|
||||
.ctx_length = sizeof(sha2_context),
|
||||
.init = sha256_init,
|
||||
.update = sha256_update,
|
||||
.final = sha256_final,
|
||||
.digest = digest_generic_digest,
|
||||
.verify = digest_generic_verify,
|
||||
.length = SHA256_DIGEST_SIZE,
|
||||
.ctx_length = sizeof(struct sha256_state),
|
||||
};
|
||||
|
||||
static int sha256_digest_register(void)
|
||||
|
|
|
|||
Loading…
Reference in New Issue