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author | Adam Harrison <adamdharrison@gmail.com> | 2023-07-06 06:37:41 -0400 |
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committer | Adam Harrison <adamdharrison@gmail.com> | 2023-07-06 06:37:41 -0400 |
commit | 9db10386430479067795bec66bb26343ff176ded (patch) | |
tree | 5ad0cf95abde7cf03afaf8f70af8549d46b09a46 /lib/mbedtls-2.27.0/library/poly1305.c | |
parent | 57092d80cb07fa1a84873769fa92165426196054 (diff) | |
download | lite-xl-plugin-manager-9db10386430479067795bec66bb26343ff176ded.tar.gz lite-xl-plugin-manager-9db10386430479067795bec66bb26343ff176ded.zip |
Removed old mbedtls, replacing with submodule.
Diffstat (limited to 'lib/mbedtls-2.27.0/library/poly1305.c')
-rw-r--r-- | lib/mbedtls-2.27.0/library/poly1305.c | 557 |
1 files changed, 0 insertions, 557 deletions
diff --git a/lib/mbedtls-2.27.0/library/poly1305.c b/lib/mbedtls-2.27.0/library/poly1305.c deleted file mode 100644 index 492d145..0000000 --- a/lib/mbedtls-2.27.0/library/poly1305.c +++ /dev/null @@ -1,557 +0,0 @@ -/** - * \file poly1305.c - * - * \brief Poly1305 authentication algorithm. - * - * Copyright The Mbed TLS Contributors - * 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. - */ -#include "common.h" - -#if defined(MBEDTLS_POLY1305_C) - -#include "mbedtls/poly1305.h" -#include "mbedtls/platform_util.h" -#include "mbedtls/error.h" - -#include <string.h> - -#if defined(MBEDTLS_SELF_TEST) -#if defined(MBEDTLS_PLATFORM_C) -#include "mbedtls/platform.h" -#else -#include <stdio.h> -#define mbedtls_printf printf -#endif /* MBEDTLS_PLATFORM_C */ -#endif /* MBEDTLS_SELF_TEST */ - -#if !defined(MBEDTLS_POLY1305_ALT) - -#if ( defined(__ARMCC_VERSION) || defined(_MSC_VER) ) && \ - !defined(inline) && !defined(__cplusplus) -#define inline __inline -#endif - -/* Parameter validation macros */ -#define POLY1305_VALIDATE_RET( cond ) \ - MBEDTLS_INTERNAL_VALIDATE_RET( cond, MBEDTLS_ERR_POLY1305_BAD_INPUT_DATA ) -#define POLY1305_VALIDATE( cond ) \ - MBEDTLS_INTERNAL_VALIDATE( cond ) - -#define POLY1305_BLOCK_SIZE_BYTES ( 16U ) - -#define BYTES_TO_U32_LE( data, offset ) \ - ( (uint32_t) (data)[offset] \ - | (uint32_t) ( (uint32_t) (data)[( offset ) + 1] << 8 ) \ - | (uint32_t) ( (uint32_t) (data)[( offset ) + 2] << 16 ) \ - | (uint32_t) ( (uint32_t) (data)[( offset ) + 3] << 24 ) \ - ) - -/* - * Our implementation is tuned for 32-bit platforms with a 64-bit multiplier. - * However we provided an alternative for platforms without such a multiplier. - */ -#if defined(MBEDTLS_NO_64BIT_MULTIPLICATION) -static uint64_t mul64( uint32_t a, uint32_t b ) -{ - /* a = al + 2**16 ah, b = bl + 2**16 bh */ - const uint16_t al = (uint16_t) a; - const uint16_t bl = (uint16_t) b; - const uint16_t ah = a >> 16; - const uint16_t bh = b >> 16; - - /* ab = al*bl + 2**16 (ah*bl + bl*bh) + 2**32 ah*bh */ - const uint32_t lo = (uint32_t) al * bl; - const uint64_t me = (uint64_t)( (uint32_t) ah * bl ) + (uint32_t) al * bh; - const uint32_t hi = (uint32_t) ah * bh; - - return( lo + ( me << 16 ) + ( (uint64_t) hi << 32 ) ); -} -#else -static inline uint64_t mul64( uint32_t a, uint32_t b ) -{ - return( (uint64_t) a * b ); -} -#endif - - -/** - * \brief Process blocks with Poly1305. - * - * \param ctx The Poly1305 context. - * \param nblocks Number of blocks to process. Note that this - * function only processes full blocks. - * \param input Buffer containing the input block(s). - * \param needs_padding Set to 0 if the padding bit has already been - * applied to the input data before calling this - * function. Otherwise, set this parameter to 1. - */ -static void poly1305_process( mbedtls_poly1305_context *ctx, - size_t nblocks, - const unsigned char *input, - uint32_t needs_padding ) -{ - uint64_t d0, d1, d2, d3; - uint32_t acc0, acc1, acc2, acc3, acc4; - uint32_t r0, r1, r2, r3; - uint32_t rs1, rs2, rs3; - size_t offset = 0U; - size_t i; - - r0 = ctx->r[0]; - r1 = ctx->r[1]; - r2 = ctx->r[2]; - r3 = ctx->r[3]; - - rs1 = r1 + ( r1 >> 2U ); - rs2 = r2 + ( r2 >> 2U ); - rs3 = r3 + ( r3 >> 2U ); - - acc0 = ctx->acc[0]; - acc1 = ctx->acc[1]; - acc2 = ctx->acc[2]; - acc3 = ctx->acc[3]; - acc4 = ctx->acc[4]; - - /* Process full blocks */ - for( i = 0U; i < nblocks; i++ ) - { - /* The input block is treated as a 128-bit little-endian integer */ - d0 = BYTES_TO_U32_LE( input, offset + 0 ); - d1 = BYTES_TO_U32_LE( input, offset + 4 ); - d2 = BYTES_TO_U32_LE( input, offset + 8 ); - d3 = BYTES_TO_U32_LE( input, offset + 12 ); - - /* Compute: acc += (padded) block as a 130-bit integer */ - d0 += (uint64_t) acc0; - d1 += (uint64_t) acc1 + ( d0 >> 32U ); - d2 += (uint64_t) acc2 + ( d1 >> 32U ); - d3 += (uint64_t) acc3 + ( d2 >> 32U ); - acc0 = (uint32_t) d0; - acc1 = (uint32_t) d1; - acc2 = (uint32_t) d2; - acc3 = (uint32_t) d3; - acc4 += (uint32_t) ( d3 >> 32U ) + needs_padding; - - /* Compute: acc *= r */ - d0 = mul64( acc0, r0 ) + - mul64( acc1, rs3 ) + - mul64( acc2, rs2 ) + - mul64( acc3, rs1 ); - d1 = mul64( acc0, r1 ) + - mul64( acc1, r0 ) + - mul64( acc2, rs3 ) + - mul64( acc3, rs2 ) + - mul64( acc4, rs1 ); - d2 = mul64( acc0, r2 ) + - mul64( acc1, r1 ) + - mul64( acc2, r0 ) + - mul64( acc3, rs3 ) + - mul64( acc4, rs2 ); - d3 = mul64( acc0, r3 ) + - mul64( acc1, r2 ) + - mul64( acc2, r1 ) + - mul64( acc3, r0 ) + - mul64( acc4, rs3 ); - acc4 *= r0; - - /* Compute: acc %= (2^130 - 5) (partial remainder) */ - d1 += ( d0 >> 32 ); - d2 += ( d1 >> 32 ); - d3 += ( d2 >> 32 ); - acc0 = (uint32_t) d0; - acc1 = (uint32_t) d1; - acc2 = (uint32_t) d2; - acc3 = (uint32_t) d3; - acc4 = (uint32_t) ( d3 >> 32 ) + acc4; - - d0 = (uint64_t) acc0 + ( acc4 >> 2 ) + ( acc4 & 0xFFFFFFFCU ); - acc4 &= 3U; - acc0 = (uint32_t) d0; - d0 = (uint64_t) acc1 + ( d0 >> 32U ); - acc1 = (uint32_t) d0; - d0 = (uint64_t) acc2 + ( d0 >> 32U ); - acc2 = (uint32_t) d0; - d0 = (uint64_t) acc3 + ( d0 >> 32U ); - acc3 = (uint32_t) d0; - d0 = (uint64_t) acc4 + ( d0 >> 32U ); - acc4 = (uint32_t) d0; - - offset += POLY1305_BLOCK_SIZE_BYTES; - } - - ctx->acc[0] = acc0; - ctx->acc[1] = acc1; - ctx->acc[2] = acc2; - ctx->acc[3] = acc3; - ctx->acc[4] = acc4; -} - -/** - * \brief Compute the Poly1305 MAC - * - * \param ctx The Poly1305 context. - * \param mac The buffer to where the MAC is written. Must be - * big enough to contain the 16-byte MAC. - */ -static void poly1305_compute_mac( const mbedtls_poly1305_context *ctx, - unsigned char mac[16] ) -{ - uint64_t d; - uint32_t g0, g1, g2, g3, g4; - uint32_t acc0, acc1, acc2, acc3, acc4; - uint32_t mask; - uint32_t mask_inv; - - acc0 = ctx->acc[0]; - acc1 = ctx->acc[1]; - acc2 = ctx->acc[2]; - acc3 = ctx->acc[3]; - acc4 = ctx->acc[4]; - - /* Before adding 's' we ensure that the accumulator is mod 2^130 - 5. - * We do this by calculating acc - (2^130 - 5), then checking if - * the 131st bit is set. If it is, then reduce: acc -= (2^130 - 5) - */ - - /* Calculate acc + -(2^130 - 5) */ - d = ( (uint64_t) acc0 + 5U ); - g0 = (uint32_t) d; - d = ( (uint64_t) acc1 + ( d >> 32 ) ); - g1 = (uint32_t) d; - d = ( (uint64_t) acc2 + ( d >> 32 ) ); - g2 = (uint32_t) d; - d = ( (uint64_t) acc3 + ( d >> 32 ) ); - g3 = (uint32_t) d; - g4 = acc4 + (uint32_t) ( d >> 32U ); - - /* mask == 0xFFFFFFFF if 131st bit is set, otherwise mask == 0 */ - mask = (uint32_t) 0U - ( g4 >> 2U ); - mask_inv = ~mask; - - /* If 131st bit is set then acc=g, otherwise, acc is unmodified */ - acc0 = ( acc0 & mask_inv ) | ( g0 & mask ); - acc1 = ( acc1 & mask_inv ) | ( g1 & mask ); - acc2 = ( acc2 & mask_inv ) | ( g2 & mask ); - acc3 = ( acc3 & mask_inv ) | ( g3 & mask ); - - /* Add 's' */ - d = (uint64_t) acc0 + ctx->s[0]; - acc0 = (uint32_t) d; - d = (uint64_t) acc1 + ctx->s[1] + ( d >> 32U ); - acc1 = (uint32_t) d; - d = (uint64_t) acc2 + ctx->s[2] + ( d >> 32U ); - acc2 = (uint32_t) d; - acc3 += ctx->s[3] + (uint32_t) ( d >> 32U ); - - /* Compute MAC (128 least significant bits of the accumulator) */ - mac[ 0] = (unsigned char)( acc0 ); - mac[ 1] = (unsigned char)( acc0 >> 8 ); - mac[ 2] = (unsigned char)( acc0 >> 16 ); - mac[ 3] = (unsigned char)( acc0 >> 24 ); - mac[ 4] = (unsigned char)( acc1 ); - mac[ 5] = (unsigned char)( acc1 >> 8 ); - mac[ 6] = (unsigned char)( acc1 >> 16 ); - mac[ 7] = (unsigned char)( acc1 >> 24 ); - mac[ 8] = (unsigned char)( acc2 ); - mac[ 9] = (unsigned char)( acc2 >> 8 ); - mac[10] = (unsigned char)( acc2 >> 16 ); - mac[11] = (unsigned char)( acc2 >> 24 ); - mac[12] = (unsigned char)( acc3 ); - mac[13] = (unsigned char)( acc3 >> 8 ); - mac[14] = (unsigned char)( acc3 >> 16 ); - mac[15] = (unsigned char)( acc3 >> 24 ); -} - -void mbedtls_poly1305_init( mbedtls_poly1305_context *ctx ) -{ - POLY1305_VALIDATE( ctx != NULL ); - - mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) ); -} - -void mbedtls_poly1305_free( mbedtls_poly1305_context *ctx ) -{ - if( ctx == NULL ) - return; - - mbedtls_platform_zeroize( ctx, sizeof( mbedtls_poly1305_context ) ); -} - -int mbedtls_poly1305_starts( mbedtls_poly1305_context *ctx, - const unsigned char key[32] ) -{ - POLY1305_VALIDATE_RET( ctx != NULL ); - POLY1305_VALIDATE_RET( key != NULL ); - - /* r &= 0x0ffffffc0ffffffc0ffffffc0fffffff */ - ctx->r[0] = BYTES_TO_U32_LE( key, 0 ) & 0x0FFFFFFFU; - ctx->r[1] = BYTES_TO_U32_LE( key, 4 ) & 0x0FFFFFFCU; - ctx->r[2] = BYTES_TO_U32_LE( key, 8 ) & 0x0FFFFFFCU; - ctx->r[3] = BYTES_TO_U32_LE( key, 12 ) & 0x0FFFFFFCU; - - ctx->s[0] = BYTES_TO_U32_LE( key, 16 ); - ctx->s[1] = BYTES_TO_U32_LE( key, 20 ); - ctx->s[2] = BYTES_TO_U32_LE( key, 24 ); - ctx->s[3] = BYTES_TO_U32_LE( key, 28 ); - - /* Initial accumulator state */ - ctx->acc[0] = 0U; - ctx->acc[1] = 0U; - ctx->acc[2] = 0U; - ctx->acc[3] = 0U; - ctx->acc[4] = 0U; - - /* Queue initially empty */ - mbedtls_platform_zeroize( ctx->queue, sizeof( ctx->queue ) ); - ctx->queue_len = 0U; - - return( 0 ); -} - -int mbedtls_poly1305_update( mbedtls_poly1305_context *ctx, - const unsigned char *input, - size_t ilen ) -{ - size_t offset = 0U; - size_t remaining = ilen; - size_t queue_free_len; - size_t nblocks; - POLY1305_VALIDATE_RET( ctx != NULL ); - POLY1305_VALIDATE_RET( ilen == 0 || input != NULL ); - - if( ( remaining > 0U ) && ( ctx->queue_len > 0U ) ) - { - queue_free_len = ( POLY1305_BLOCK_SIZE_BYTES - ctx->queue_len ); - - if( ilen < queue_free_len ) - { - /* Not enough data to complete the block. - * Store this data with the other leftovers. - */ - memcpy( &ctx->queue[ctx->queue_len], - input, - ilen ); - - ctx->queue_len += ilen; - - remaining = 0U; - } - else - { - /* Enough data to produce a complete block */ - memcpy( &ctx->queue[ctx->queue_len], - input, - queue_free_len ); - - ctx->queue_len = 0U; - - poly1305_process( ctx, 1U, ctx->queue, 1U ); /* add padding bit */ - - offset += queue_free_len; - remaining -= queue_free_len; - } - } - - if( remaining >= POLY1305_BLOCK_SIZE_BYTES ) - { - nblocks = remaining / POLY1305_BLOCK_SIZE_BYTES; - - poly1305_process( ctx, nblocks, &input[offset], 1U ); - - offset += nblocks * POLY1305_BLOCK_SIZE_BYTES; - remaining %= POLY1305_BLOCK_SIZE_BYTES; - } - - if( remaining > 0U ) - { - /* Store partial block */ - ctx->queue_len = remaining; - memcpy( ctx->queue, &input[offset], remaining ); - } - - return( 0 ); -} - -int mbedtls_poly1305_finish( mbedtls_poly1305_context *ctx, - unsigned char mac[16] ) -{ - POLY1305_VALIDATE_RET( ctx != NULL ); - POLY1305_VALIDATE_RET( mac != NULL ); - - /* Process any leftover data */ - if( ctx->queue_len > 0U ) - { - /* Add padding bit */ - ctx->queue[ctx->queue_len] = 1U; - ctx->queue_len++; - - /* Pad with zeroes */ - memset( &ctx->queue[ctx->queue_len], - 0, - POLY1305_BLOCK_SIZE_BYTES - ctx->queue_len ); - - poly1305_process( ctx, 1U, /* Process 1 block */ - ctx->queue, 0U ); /* Already padded above */ - } - - poly1305_compute_mac( ctx, mac ); - - return( 0 ); -} - -int mbedtls_poly1305_mac( const unsigned char key[32], - const unsigned char *input, - size_t ilen, - unsigned char mac[16] ) -{ - mbedtls_poly1305_context ctx; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - POLY1305_VALIDATE_RET( key != NULL ); - POLY1305_VALIDATE_RET( mac != NULL ); - POLY1305_VALIDATE_RET( ilen == 0 || input != NULL ); - - mbedtls_poly1305_init( &ctx ); - - ret = mbedtls_poly1305_starts( &ctx, key ); - if( ret != 0 ) - goto cleanup; - - ret = mbedtls_poly1305_update( &ctx, input, ilen ); - if( ret != 0 ) - goto cleanup; - - ret = mbedtls_poly1305_finish( &ctx, mac ); - -cleanup: - mbedtls_poly1305_free( &ctx ); - return( ret ); -} - -#endif /* MBEDTLS_POLY1305_ALT */ - -#if defined(MBEDTLS_SELF_TEST) - -static const unsigned char test_keys[2][32] = -{ - { - 0x85, 0xd6, 0xbe, 0x78, 0x57, 0x55, 0x6d, 0x33, - 0x7f, 0x44, 0x52, 0xfe, 0x42, 0xd5, 0x06, 0xa8, - 0x01, 0x03, 0x80, 0x8a, 0xfb, 0x0d, 0xb2, 0xfd, - 0x4a, 0xbf, 0xf6, 0xaf, 0x41, 0x49, 0xf5, 0x1b - }, - { - 0x1c, 0x92, 0x40, 0xa5, 0xeb, 0x55, 0xd3, 0x8a, - 0xf3, 0x33, 0x88, 0x86, 0x04, 0xf6, 0xb5, 0xf0, - 0x47, 0x39, 0x17, 0xc1, 0x40, 0x2b, 0x80, 0x09, - 0x9d, 0xca, 0x5c, 0xbc, 0x20, 0x70, 0x75, 0xc0 - } -}; - -static const unsigned char test_data[2][127] = -{ - { - 0x43, 0x72, 0x79, 0x70, 0x74, 0x6f, 0x67, 0x72, - 0x61, 0x70, 0x68, 0x69, 0x63, 0x20, 0x46, 0x6f, - 0x72, 0x75, 0x6d, 0x20, 0x52, 0x65, 0x73, 0x65, - 0x61, 0x72, 0x63, 0x68, 0x20, 0x47, 0x72, 0x6f, - 0x75, 0x70 - }, - { - 0x27, 0x54, 0x77, 0x61, 0x73, 0x20, 0x62, 0x72, - 0x69, 0x6c, 0x6c, 0x69, 0x67, 0x2c, 0x20, 0x61, - 0x6e, 0x64, 0x20, 0x74, 0x68, 0x65, 0x20, 0x73, - 0x6c, 0x69, 0x74, 0x68, 0x79, 0x20, 0x74, 0x6f, - 0x76, 0x65, 0x73, 0x0a, 0x44, 0x69, 0x64, 0x20, - 0x67, 0x79, 0x72, 0x65, 0x20, 0x61, 0x6e, 0x64, - 0x20, 0x67, 0x69, 0x6d, 0x62, 0x6c, 0x65, 0x20, - 0x69, 0x6e, 0x20, 0x74, 0x68, 0x65, 0x20, 0x77, - 0x61, 0x62, 0x65, 0x3a, 0x0a, 0x41, 0x6c, 0x6c, - 0x20, 0x6d, 0x69, 0x6d, 0x73, 0x79, 0x20, 0x77, - 0x65, 0x72, 0x65, 0x20, 0x74, 0x68, 0x65, 0x20, - 0x62, 0x6f, 0x72, 0x6f, 0x67, 0x6f, 0x76, 0x65, - 0x73, 0x2c, 0x0a, 0x41, 0x6e, 0x64, 0x20, 0x74, - 0x68, 0x65, 0x20, 0x6d, 0x6f, 0x6d, 0x65, 0x20, - 0x72, 0x61, 0x74, 0x68, 0x73, 0x20, 0x6f, 0x75, - 0x74, 0x67, 0x72, 0x61, 0x62, 0x65, 0x2e - } -}; - -static const size_t test_data_len[2] = -{ - 34U, - 127U -}; - -static const unsigned char test_mac[2][16] = -{ - { - 0xa8, 0x06, 0x1d, 0xc1, 0x30, 0x51, 0x36, 0xc6, - 0xc2, 0x2b, 0x8b, 0xaf, 0x0c, 0x01, 0x27, 0xa9 - }, - { - 0x45, 0x41, 0x66, 0x9a, 0x7e, 0xaa, 0xee, 0x61, - 0xe7, 0x08, 0xdc, 0x7c, 0xbc, 0xc5, 0xeb, 0x62 - } -}; - -/* Make sure no other definition is already present. */ -#undef ASSERT - -#define ASSERT( cond, args ) \ - do \ - { \ - if( ! ( cond ) ) \ - { \ - if( verbose != 0 ) \ - mbedtls_printf args; \ - \ - return( -1 ); \ - } \ - } \ - while( 0 ) - -int mbedtls_poly1305_self_test( int verbose ) -{ - unsigned char mac[16]; - unsigned i; - int ret = MBEDTLS_ERR_ERROR_CORRUPTION_DETECTED; - - for( i = 0U; i < 2U; i++ ) - { - if( verbose != 0 ) - mbedtls_printf( " Poly1305 test %u ", i ); - - ret = mbedtls_poly1305_mac( test_keys[i], - test_data[i], - test_data_len[i], - mac ); - ASSERT( 0 == ret, ( "error code: %i\n", ret ) ); - - ASSERT( 0 == memcmp( mac, test_mac[i], 16U ), ( "failed (mac)\n" ) ); - - if( verbose != 0 ) - mbedtls_printf( "passed\n" ); - } - - if( verbose != 0 ) - mbedtls_printf( "\n" ); - - return( 0 ); -} - -#endif /* MBEDTLS_SELF_TEST */ - -#endif /* MBEDTLS_POLY1305_C */ |