early-access version 1503
This commit is contained in:
162
externals/mbedtls/library/sha256.c
vendored
162
externals/mbedtls/library/sha256.c
vendored
@@ -1,8 +1,31 @@
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/*
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* FIPS-180-2 compliant SHA-256 implementation
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*
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* Copyright (C) 2006-2015, ARM Limited, All Rights Reserved
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* SPDX-License-Identifier: GPL-2.0
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* Copyright The Mbed TLS Contributors
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* SPDX-License-Identifier: Apache-2.0 OR GPL-2.0-or-later
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*
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* This file is provided under the Apache License 2.0, or the
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* GNU General Public License v2.0 or later.
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*
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* **********
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* Apache License 2.0:
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*
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* Licensed under the Apache License, Version 2.0 (the "License"); you may
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* not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* **********
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*
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* **********
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* GNU General Public License v2.0 or later:
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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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@@ -18,7 +41,7 @@
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* with this program; if not, write to the Free Software Foundation, Inc.,
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* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* This file is part of mbed TLS (https://tls.mbed.org)
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* **********
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*/
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/*
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* The SHA-256 Secure Hash Standard was published by NIST in 2002.
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@@ -51,6 +74,10 @@
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#endif /* MBEDTLS_PLATFORM_C */
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#endif /* MBEDTLS_SELF_TEST */
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#define SHA256_VALIDATE_RET(cond) \
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MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_SHA256_BAD_INPUT_DATA )
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#define SHA256_VALIDATE(cond) MBEDTLS_INTERNAL_VALIDATE( cond )
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#if !defined(MBEDTLS_SHA256_ALT)
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/*
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@@ -78,6 +105,8 @@ do { \
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void mbedtls_sha256_init( mbedtls_sha256_context *ctx )
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{
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SHA256_VALIDATE( ctx != NULL );
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memset( ctx, 0, sizeof( mbedtls_sha256_context ) );
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}
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@@ -92,6 +121,9 @@ void mbedtls_sha256_free( mbedtls_sha256_context *ctx )
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void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
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const mbedtls_sha256_context *src )
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{
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SHA256_VALIDATE( dst != NULL );
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SHA256_VALIDATE( src != NULL );
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*dst = *src;
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}
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@@ -100,6 +132,9 @@ void mbedtls_sha256_clone( mbedtls_sha256_context *dst,
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*/
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int mbedtls_sha256_starts_ret( mbedtls_sha256_context *ctx, int is224 )
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{
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SHA256_VALIDATE_RET( ctx != NULL );
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SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 );
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ctx->total[0] = 0;
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ctx->total[1] = 0;
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@@ -162,8 +197,8 @@ static const uint32_t K[] =
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0x90BEFFFA, 0xA4506CEB, 0xBEF9A3F7, 0xC67178F2,
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};
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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 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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@@ -171,76 +206,107 @@ static const uint32_t K[] =
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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 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 R(t) \
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( \
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local.W[t] = S1(local.W[(t) - 2]) + local.W[(t) - 7] + \
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S0(local.W[(t) - 15]) + local.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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{ \
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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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}
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#define P(a,b,c,d,e,f,g,h,x,K) \
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do \
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{ \
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local.temp1 = (h) + S3(e) + F1((e),(f),(g)) + (K) + (x); \
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local.temp2 = S2(a) + F0((a),(b),(c)); \
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(d) += local.temp1; (h) = local.temp1 + local.temp2; \
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} while( 0 )
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int mbedtls_internal_sha256_process( mbedtls_sha256_context *ctx,
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const unsigned char data[64] )
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{
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uint32_t temp1, temp2, W[64];
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uint32_t A[8];
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struct
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{
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uint32_t temp1, temp2, W[64];
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uint32_t A[8];
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} local;
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unsigned int i;
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SHA256_VALIDATE_RET( ctx != NULL );
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SHA256_VALIDATE_RET( (const unsigned char *)data != NULL );
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for( i = 0; i < 8; i++ )
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A[i] = ctx->state[i];
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local.A[i] = ctx->state[i];
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#if defined(MBEDTLS_SHA256_SMALLER)
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for( i = 0; i < 64; i++ )
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{
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if( i < 16 )
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GET_UINT32_BE( W[i], data, 4 * i );
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GET_UINT32_BE( local.W[i], data, 4 * i );
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else
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R( i );
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P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i], K[i] );
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P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4],
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local.A[5], local.A[6], local.A[7], local.W[i], K[i] );
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temp1 = A[7]; A[7] = A[6]; A[6] = A[5]; A[5] = A[4]; A[4] = A[3];
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A[3] = A[2]; A[2] = A[1]; A[1] = A[0]; A[0] = temp1;
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local.temp1 = local.A[7]; local.A[7] = local.A[6];
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local.A[6] = local.A[5]; local.A[5] = local.A[4];
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local.A[4] = local.A[3]; local.A[3] = local.A[2];
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local.A[2] = local.A[1]; local.A[1] = local.A[0];
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local.A[0] = local.temp1;
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}
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#else /* MBEDTLS_SHA256_SMALLER */
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for( i = 0; i < 16; i++ )
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GET_UINT32_BE( W[i], data, 4 * i );
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GET_UINT32_BE( local.W[i], data, 4 * i );
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for( i = 0; i < 16; i += 8 )
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{
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P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], W[i+0], K[i+0] );
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P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], W[i+1], K[i+1] );
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P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], W[i+2], K[i+2] );
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P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], W[i+3], K[i+3] );
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P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], W[i+4], K[i+4] );
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P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], W[i+5], K[i+5] );
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P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], W[i+6], K[i+6] );
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P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], W[i+7], K[i+7] );
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P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4],
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local.A[5], local.A[6], local.A[7], local.W[i+0], K[i+0] );
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P( local.A[7], local.A[0], local.A[1], local.A[2], local.A[3],
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local.A[4], local.A[5], local.A[6], local.W[i+1], K[i+1] );
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P( local.A[6], local.A[7], local.A[0], local.A[1], local.A[2],
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local.A[3], local.A[4], local.A[5], local.W[i+2], K[i+2] );
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P( local.A[5], local.A[6], local.A[7], local.A[0], local.A[1],
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local.A[2], local.A[3], local.A[4], local.W[i+3], K[i+3] );
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P( local.A[4], local.A[5], local.A[6], local.A[7], local.A[0],
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local.A[1], local.A[2], local.A[3], local.W[i+4], K[i+4] );
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P( local.A[3], local.A[4], local.A[5], local.A[6], local.A[7],
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local.A[0], local.A[1], local.A[2], local.W[i+5], K[i+5] );
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P( local.A[2], local.A[3], local.A[4], local.A[5], local.A[6],
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local.A[7], local.A[0], local.A[1], local.W[i+6], K[i+6] );
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P( local.A[1], local.A[2], local.A[3], local.A[4], local.A[5],
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local.A[6], local.A[7], local.A[0], local.W[i+7], K[i+7] );
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}
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for( i = 16; i < 64; i += 8 )
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{
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P( A[0], A[1], A[2], A[3], A[4], A[5], A[6], A[7], R(i+0), K[i+0] );
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P( A[7], A[0], A[1], A[2], A[3], A[4], A[5], A[6], R(i+1), K[i+1] );
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P( A[6], A[7], A[0], A[1], A[2], A[3], A[4], A[5], R(i+2), K[i+2] );
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P( A[5], A[6], A[7], A[0], A[1], A[2], A[3], A[4], R(i+3), K[i+3] );
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P( A[4], A[5], A[6], A[7], A[0], A[1], A[2], A[3], R(i+4), K[i+4] );
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P( A[3], A[4], A[5], A[6], A[7], A[0], A[1], A[2], R(i+5), K[i+5] );
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P( A[2], A[3], A[4], A[5], A[6], A[7], A[0], A[1], R(i+6), K[i+6] );
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P( A[1], A[2], A[3], A[4], A[5], A[6], A[7], A[0], R(i+7), K[i+7] );
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P( local.A[0], local.A[1], local.A[2], local.A[3], local.A[4],
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local.A[5], local.A[6], local.A[7], R(i+0), K[i+0] );
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P( local.A[7], local.A[0], local.A[1], local.A[2], local.A[3],
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local.A[4], local.A[5], local.A[6], R(i+1), K[i+1] );
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P( local.A[6], local.A[7], local.A[0], local.A[1], local.A[2],
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local.A[3], local.A[4], local.A[5], R(i+2), K[i+2] );
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P( local.A[5], local.A[6], local.A[7], local.A[0], local.A[1],
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local.A[2], local.A[3], local.A[4], R(i+3), K[i+3] );
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P( local.A[4], local.A[5], local.A[6], local.A[7], local.A[0],
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local.A[1], local.A[2], local.A[3], R(i+4), K[i+4] );
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P( local.A[3], local.A[4], local.A[5], local.A[6], local.A[7],
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local.A[0], local.A[1], local.A[2], R(i+5), K[i+5] );
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P( local.A[2], local.A[3], local.A[4], local.A[5], local.A[6],
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local.A[7], local.A[0], local.A[1], R(i+6), K[i+6] );
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P( local.A[1], local.A[2], local.A[3], local.A[4], local.A[5],
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local.A[6], local.A[7], local.A[0], R(i+7), K[i+7] );
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}
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#endif /* MBEDTLS_SHA256_SMALLER */
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for( i = 0; i < 8; i++ )
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ctx->state[i] += A[i];
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ctx->state[i] += local.A[i];
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/* Zeroise buffers and variables to clear sensitive data from memory. */
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mbedtls_platform_zeroize( &local, sizeof( local ) );
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return( 0 );
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}
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@@ -265,6 +331,9 @@ int mbedtls_sha256_update_ret( mbedtls_sha256_context *ctx,
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size_t fill;
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uint32_t left;
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SHA256_VALIDATE_RET( ctx != NULL );
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SHA256_VALIDATE_RET( ilen == 0 || input != NULL );
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if( ilen == 0 )
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return( 0 );
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@@ -323,6 +392,9 @@ int mbedtls_sha256_finish_ret( mbedtls_sha256_context *ctx,
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uint32_t used;
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uint32_t high, low;
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SHA256_VALIDATE_RET( ctx != NULL );
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SHA256_VALIDATE_RET( (unsigned char *)output != NULL );
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/*
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* Add padding: 0x80 then 0x00 until 8 bytes remain for the length
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*/
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@@ -397,6 +469,10 @@ int mbedtls_sha256_ret( const unsigned char *input,
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int ret;
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mbedtls_sha256_context ctx;
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SHA256_VALIDATE_RET( is224 == 0 || is224 == 1 );
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SHA256_VALIDATE_RET( ilen == 0 || input != NULL );
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SHA256_VALIDATE_RET( (unsigned char *)output != NULL );
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mbedtls_sha256_init( &ctx );
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if( ( ret = mbedtls_sha256_starts_ret( &ctx, is224 ) ) != 0 )
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