mbed library sources. Supersedes mbed-src.
Fork of mbed-dev by
Diff: targets/TARGET_NUVOTON/TARGET_NUC472/crypto/sha/sha1_alt_sw.c
- Revision:
- 153:9398a535854b
- Parent:
- 152:9a67f0b066fc
--- a/targets/TARGET_NUVOTON/TARGET_NUC472/crypto/sha/sha1_alt_sw.c Thu Dec 15 11:48:27 2016 +0000 +++ /dev/null Thu Jan 01 00:00:00 1970 +0000 @@ -1,337 +0,0 @@ -/* - * FIPS-180-1 compliant SHA-1 implementation - * - * Copyright (C) 2006-2015, ARM Limited, All Rights Reserved - * SPDX-License-Identifier: Apache-2.0 - * - * Licensed under the Apache License, Version 2.0 (the "License"); you may - * not use this file except in compliance with the License. - * You may obtain a copy of the License at - * - * http://www.apache.org/licenses/LICENSE-2.0 - * - * Unless required by applicable law or agreed to in writing, software - * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT - * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. - * See the License for the specific language governing permissions and - * limitations under the License. - * - * This file is part of mbed TLS (https://tls.mbed.org) - */ -/* - * The SHA-1 standard was published by NIST in 1993. - * - * http://www.itl.nist.gov/fipspubs/fip180-1.htm - */ - -#if !defined(MBEDTLS_CONFIG_FILE) -#include "mbedtls/config.h" -#else -#include MBEDTLS_CONFIG_FILE -#endif - -#if defined(MBEDTLS_SHA1_C) -#if defined(MBEDTLS_SHA1_ALT) - -#include "mbedtls/sha1.h" - -#include <string.h> - -/* Implementation that should never be optimized out by the compiler */ -static void mbedtls_zeroize( void *v, size_t n ) { - volatile unsigned char *p = (unsigned char*)v; while( n-- ) *p++ = 0; -} - -/* - * 32-bit integer manipulation macros (big endian) - */ -#ifndef GET_UINT32_BE -#define GET_UINT32_BE(n,b,i) \ -{ \ - (n) = ( (uint32_t) (b)[(i) ] << 24 ) \ - | ( (uint32_t) (b)[(i) + 1] << 16 ) \ - | ( (uint32_t) (b)[(i) + 2] << 8 ) \ - | ( (uint32_t) (b)[(i) + 3] ); \ -} -#endif - -#ifndef PUT_UINT32_BE -#define PUT_UINT32_BE(n,b,i) \ -{ \ - (b)[(i) ] = (unsigned char) ( (n) >> 24 ); \ - (b)[(i) + 1] = (unsigned char) ( (n) >> 16 ); \ - (b)[(i) + 2] = (unsigned char) ( (n) >> 8 ); \ - (b)[(i) + 3] = (unsigned char) ( (n) ); \ -} -#endif - -void mbedtls_sha1_sw_init( mbedtls_sha1_sw_context *ctx ) -{ - memset( ctx, 0, sizeof( mbedtls_sha1_sw_context ) ); -} - -void mbedtls_sha1_sw_free( mbedtls_sha1_sw_context *ctx ) -{ - if( ctx == NULL ) - return; - - mbedtls_zeroize( ctx, sizeof( mbedtls_sha1_sw_context ) ); -} - -void mbedtls_sha1_sw_clone( mbedtls_sha1_sw_context *dst, - const mbedtls_sha1_sw_context *src ) -{ - *dst = *src; -} - -/* - * SHA-1 context setup - */ -void mbedtls_sha1_sw_starts( mbedtls_sha1_sw_context *ctx ) -{ - ctx->total[0] = 0; - ctx->total[1] = 0; - - ctx->state[0] = 0x67452301; - ctx->state[1] = 0xEFCDAB89; - ctx->state[2] = 0x98BADCFE; - ctx->state[3] = 0x10325476; - ctx->state[4] = 0xC3D2E1F0; -} - -void mbedtls_sha1_sw_process( mbedtls_sha1_sw_context *ctx, const unsigned char data[64] ) -{ - uint32_t temp, W[16], A, B, C, D, E; - - GET_UINT32_BE( W[ 0], data, 0 ); - GET_UINT32_BE( W[ 1], data, 4 ); - GET_UINT32_BE( W[ 2], data, 8 ); - GET_UINT32_BE( W[ 3], data, 12 ); - GET_UINT32_BE( W[ 4], data, 16 ); - GET_UINT32_BE( W[ 5], data, 20 ); - GET_UINT32_BE( W[ 6], data, 24 ); - GET_UINT32_BE( W[ 7], data, 28 ); - GET_UINT32_BE( W[ 8], data, 32 ); - GET_UINT32_BE( W[ 9], data, 36 ); - GET_UINT32_BE( W[10], data, 40 ); - GET_UINT32_BE( W[11], data, 44 ); - GET_UINT32_BE( W[12], data, 48 ); - GET_UINT32_BE( W[13], data, 52 ); - GET_UINT32_BE( W[14], data, 56 ); - GET_UINT32_BE( W[15], data, 60 ); - -#define S(x,n) ((x << n) | ((x & 0xFFFFFFFF) >> (32 - n))) - -#define R(t) \ -( \ - temp = W[( t - 3 ) & 0x0F] ^ W[( t - 8 ) & 0x0F] ^ \ - W[( t - 14 ) & 0x0F] ^ W[ t & 0x0F], \ - ( W[t & 0x0F] = S(temp,1) ) \ -) - -#define P(a,b,c,d,e,x) \ -{ \ - e += S(a,5) + F(b,c,d) + K + x; b = S(b,30); \ -} - - A = ctx->state[0]; - B = ctx->state[1]; - C = ctx->state[2]; - D = ctx->state[3]; - E = ctx->state[4]; - -#define F(x,y,z) (z ^ (x & (y ^ z))) -#define K 0x5A827999 - - P( A, B, C, D, E, W[0] ); - P( E, A, B, C, D, W[1] ); - P( D, E, A, B, C, W[2] ); - P( C, D, E, A, B, W[3] ); - P( B, C, D, E, A, W[4] ); - P( A, B, C, D, E, W[5] ); - P( E, A, B, C, D, W[6] ); - P( D, E, A, B, C, W[7] ); - P( C, D, E, A, B, W[8] ); - P( B, C, D, E, A, W[9] ); - P( A, B, C, D, E, W[10] ); - P( E, A, B, C, D, W[11] ); - P( D, E, A, B, C, W[12] ); - P( C, D, E, A, B, W[13] ); - P( B, C, D, E, A, W[14] ); - P( A, B, C, D, E, W[15] ); - P( E, A, B, C, D, R(16) ); - P( D, E, A, B, C, R(17) ); - P( C, D, E, A, B, R(18) ); - P( B, C, D, E, A, R(19) ); - -#undef K -#undef F - -#define F(x,y,z) (x ^ y ^ z) -#define K 0x6ED9EBA1 - - P( A, B, C, D, E, R(20) ); - P( E, A, B, C, D, R(21) ); - P( D, E, A, B, C, R(22) ); - P( C, D, E, A, B, R(23) ); - P( B, C, D, E, A, R(24) ); - P( A, B, C, D, E, R(25) ); - P( E, A, B, C, D, R(26) ); - P( D, E, A, B, C, R(27) ); - P( C, D, E, A, B, R(28) ); - P( B, C, D, E, A, R(29) ); - P( A, B, C, D, E, R(30) ); - P( E, A, B, C, D, R(31) ); - P( D, E, A, B, C, R(32) ); - P( C, D, E, A, B, R(33) ); - P( B, C, D, E, A, R(34) ); - P( A, B, C, D, E, R(35) ); - P( E, A, B, C, D, R(36) ); - P( D, E, A, B, C, R(37) ); - P( C, D, E, A, B, R(38) ); - P( B, C, D, E, A, R(39) ); - -#undef K -#undef F - -#define F(x,y,z) ((x & y) | (z & (x | y))) -#define K 0x8F1BBCDC - - P( A, B, C, D, E, R(40) ); - P( E, A, B, C, D, R(41) ); - P( D, E, A, B, C, R(42) ); - P( C, D, E, A, B, R(43) ); - P( B, C, D, E, A, R(44) ); - P( A, B, C, D, E, R(45) ); - P( E, A, B, C, D, R(46) ); - P( D, E, A, B, C, R(47) ); - P( C, D, E, A, B, R(48) ); - P( B, C, D, E, A, R(49) ); - P( A, B, C, D, E, R(50) ); - P( E, A, B, C, D, R(51) ); - P( D, E, A, B, C, R(52) ); - P( C, D, E, A, B, R(53) ); - P( B, C, D, E, A, R(54) ); - P( A, B, C, D, E, R(55) ); - P( E, A, B, C, D, R(56) ); - P( D, E, A, B, C, R(57) ); - P( C, D, E, A, B, R(58) ); - P( B, C, D, E, A, R(59) ); - -#undef K -#undef F - -#define F(x,y,z) (x ^ y ^ z) -#define K 0xCA62C1D6 - - P( A, B, C, D, E, R(60) ); - P( E, A, B, C, D, R(61) ); - P( D, E, A, B, C, R(62) ); - P( C, D, E, A, B, R(63) ); - P( B, C, D, E, A, R(64) ); - P( A, B, C, D, E, R(65) ); - P( E, A, B, C, D, R(66) ); - P( D, E, A, B, C, R(67) ); - P( C, D, E, A, B, R(68) ); - P( B, C, D, E, A, R(69) ); - P( A, B, C, D, E, R(70) ); - P( E, A, B, C, D, R(71) ); - P( D, E, A, B, C, R(72) ); - P( C, D, E, A, B, R(73) ); - P( B, C, D, E, A, R(74) ); - P( A, B, C, D, E, R(75) ); - P( E, A, B, C, D, R(76) ); - P( D, E, A, B, C, R(77) ); - P( C, D, E, A, B, R(78) ); - P( B, C, D, E, A, R(79) ); - -#undef K -#undef F - - ctx->state[0] += A; - ctx->state[1] += B; - ctx->state[2] += C; - ctx->state[3] += D; - ctx->state[4] += E; -} - -/* - * SHA-1 process buffer - */ -void mbedtls_sha1_sw_update( mbedtls_sha1_sw_context *ctx, const unsigned char *input, size_t ilen ) -{ - size_t fill; - uint32_t left; - - if( ilen == 0 ) - return; - - left = ctx->total[0] & 0x3F; - fill = 64 - left; - - ctx->total[0] += (uint32_t) ilen; - ctx->total[0] &= 0xFFFFFFFF; - - if( ctx->total[0] < (uint32_t) ilen ) - ctx->total[1]++; - - if( left && ilen >= fill ) - { - memcpy( (void *) (ctx->buffer + left), input, fill ); - mbedtls_sha1_sw_process( ctx, ctx->buffer ); - input += fill; - ilen -= fill; - left = 0; - } - - while( ilen >= 64 ) - { - mbedtls_sha1_sw_process( ctx, input ); - input += 64; - ilen -= 64; - } - - if( ilen > 0 ) - memcpy( (void *) (ctx->buffer + left), input, ilen ); -} - -static const unsigned char sha1_padding[64] = -{ - 0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, - 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 -}; - -/* - * SHA-1 final digest - */ -void mbedtls_sha1_sw_finish( mbedtls_sha1_sw_context *ctx, unsigned char output[20] ) -{ - uint32_t last, padn; - uint32_t high, low; - unsigned char msglen[8]; - - high = ( ctx->total[0] >> 29 ) - | ( ctx->total[1] << 3 ); - low = ( ctx->total[0] << 3 ); - - PUT_UINT32_BE( high, msglen, 0 ); - PUT_UINT32_BE( low, msglen, 4 ); - - last = ctx->total[0] & 0x3F; - padn = ( last < 56 ) ? ( 56 - last ) : ( 120 - last ); - - mbedtls_sha1_sw_update( ctx, sha1_padding, padn ); - mbedtls_sha1_sw_update( ctx, msglen, 8 ); - - PUT_UINT32_BE( ctx->state[0], output, 0 ); - PUT_UINT32_BE( ctx->state[1], output, 4 ); - PUT_UINT32_BE( ctx->state[2], output, 8 ); - PUT_UINT32_BE( ctx->state[3], output, 12 ); - PUT_UINT32_BE( ctx->state[4], output, 16 ); -} - -#endif /* MBEDTLS_SHA1_ALT */ - -#endif /* MBEDTLS_SHA1_C */