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https://github.com/BLAKE2/BLAKE2
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374 lines
10 KiB
C
374 lines
10 KiB
C
/*
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BLAKE2 reference source code package - optimized C implementations
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Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
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terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
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your option. The terms of these licenses can be found at:
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- CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
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- OpenSSL license : https://www.openssl.org/source/license.html
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- Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
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More information about the BLAKE2 hash function can be found at
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https://blake2.net.
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*/
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#include <stdint.h>
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#include <string.h>
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#include <stdio.h>
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#include "blake2.h"
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#include "blake2-impl.h"
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#include "blake2-config.h"
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#ifdef _MSC_VER
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#include <intrin.h> /* for _mm_set_epi64x */
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#endif
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#include <emmintrin.h>
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#if defined(HAVE_SSSE3)
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#include <tmmintrin.h>
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#endif
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#if defined(HAVE_SSE41)
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#include <smmintrin.h>
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#endif
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#if defined(HAVE_AVX)
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#include <immintrin.h>
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#endif
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#if defined(HAVE_XOP)
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#include <x86intrin.h>
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#endif
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#include "blake2b-round.h"
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static const uint64_t blake2b_IV[8] =
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{
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0x6a09e667f3bcc908ULL, 0xbb67ae8584caa73bULL,
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0x3c6ef372fe94f82bULL, 0xa54ff53a5f1d36f1ULL,
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0x510e527fade682d1ULL, 0x9b05688c2b3e6c1fULL,
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0x1f83d9abfb41bd6bULL, 0x5be0cd19137e2179ULL
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};
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/* Some helper functions */
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static void blake2b_set_lastnode( blake2b_state *S )
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{
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S->f[1] = (uint64_t)-1;
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}
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static int blake2b_is_lastblock( const blake2b_state *S )
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{
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return S->f[0] != 0;
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}
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static void blake2b_set_lastblock( blake2b_state *S )
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{
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if( S->last_node ) blake2b_set_lastnode( S );
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S->f[0] = (uint64_t)-1;
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}
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static void blake2b_increment_counter( blake2b_state *S, const uint64_t inc )
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{
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S->t[0] += inc;
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S->t[1] += ( S->t[0] < inc );
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}
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/* init xors IV with input parameter block */
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int blake2b_init_param( blake2b_state *S, const blake2b_param *P )
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{
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size_t i;
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/*blake2b_init0( S ); */
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const unsigned char * v = ( const unsigned char * )( blake2b_IV );
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const unsigned char * p = ( const unsigned char * )( P );
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unsigned char * h = ( unsigned char * )( S->h );
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/* IV XOR ParamBlock */
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memset( S, 0, sizeof( blake2b_state ) );
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for( i = 0; i < BLAKE2B_OUTBYTES; ++i ) h[i] = v[i] ^ p[i];
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S->outlen = P->digest_length;
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return 0;
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}
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/* Some sort of default parameter block initialization, for sequential blake2b */
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int blake2b_init( blake2b_state *S, size_t outlen )
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{
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blake2b_param P[1];
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if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
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P->digest_length = (uint8_t)outlen;
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P->key_length = 0;
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P->fanout = 1;
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P->depth = 1;
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store32( &P->leaf_length, 0 );
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store32( &P->node_offset, 0 );
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store32( &P->xof_length, 0 );
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P->node_depth = 0;
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P->inner_length = 0;
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memset( P->reserved, 0, sizeof( P->reserved ) );
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memset( P->salt, 0, sizeof( P->salt ) );
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memset( P->personal, 0, sizeof( P->personal ) );
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return blake2b_init_param( S, P );
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}
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int blake2b_init_key( blake2b_state *S, size_t outlen, const void *key, size_t keylen )
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{
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blake2b_param P[1];
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if ( ( !outlen ) || ( outlen > BLAKE2B_OUTBYTES ) ) return -1;
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if ( ( !keylen ) || keylen > BLAKE2B_KEYBYTES ) return -1;
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P->digest_length = (uint8_t)outlen;
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P->key_length = (uint8_t)keylen;
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P->fanout = 1;
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P->depth = 1;
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store32( &P->leaf_length, 0 );
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store32( &P->node_offset, 0 );
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store32( &P->xof_length, 0 );
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P->node_depth = 0;
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P->inner_length = 0;
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memset( P->reserved, 0, sizeof( P->reserved ) );
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memset( P->salt, 0, sizeof( P->salt ) );
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memset( P->personal, 0, sizeof( P->personal ) );
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if( blake2b_init_param( S, P ) < 0 )
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return 0;
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{
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uint8_t block[BLAKE2B_BLOCKBYTES];
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memset( block, 0, BLAKE2B_BLOCKBYTES );
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memcpy( block, key, keylen );
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blake2b_update( S, block, BLAKE2B_BLOCKBYTES );
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secure_zero_memory( block, BLAKE2B_BLOCKBYTES ); /* Burn the key from stack */
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}
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return 0;
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}
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static void blake2b_compress( blake2b_state *S, const uint8_t block[BLAKE2B_BLOCKBYTES] )
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{
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__m128i row1l, row1h;
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__m128i row2l, row2h;
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__m128i row3l, row3h;
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__m128i row4l, row4h;
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__m128i b0, b1;
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__m128i t0, t1;
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#if defined(HAVE_SSSE3) && !defined(HAVE_XOP)
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const __m128i r16 = _mm_setr_epi8( 2, 3, 4, 5, 6, 7, 0, 1, 10, 11, 12, 13, 14, 15, 8, 9 );
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const __m128i r24 = _mm_setr_epi8( 3, 4, 5, 6, 7, 0, 1, 2, 11, 12, 13, 14, 15, 8, 9, 10 );
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#endif
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#if defined(HAVE_SSE41)
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const __m128i m0 = LOADU( block + 00 );
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const __m128i m1 = LOADU( block + 16 );
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const __m128i m2 = LOADU( block + 32 );
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const __m128i m3 = LOADU( block + 48 );
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const __m128i m4 = LOADU( block + 64 );
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const __m128i m5 = LOADU( block + 80 );
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const __m128i m6 = LOADU( block + 96 );
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const __m128i m7 = LOADU( block + 112 );
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#else
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const uint64_t m0 = load64(block + 0 * sizeof(uint64_t));
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const uint64_t m1 = load64(block + 1 * sizeof(uint64_t));
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const uint64_t m2 = load64(block + 2 * sizeof(uint64_t));
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const uint64_t m3 = load64(block + 3 * sizeof(uint64_t));
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const uint64_t m4 = load64(block + 4 * sizeof(uint64_t));
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const uint64_t m5 = load64(block + 5 * sizeof(uint64_t));
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const uint64_t m6 = load64(block + 6 * sizeof(uint64_t));
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const uint64_t m7 = load64(block + 7 * sizeof(uint64_t));
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const uint64_t m8 = load64(block + 8 * sizeof(uint64_t));
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const uint64_t m9 = load64(block + 9 * sizeof(uint64_t));
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const uint64_t m10 = load64(block + 10 * sizeof(uint64_t));
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const uint64_t m11 = load64(block + 11 * sizeof(uint64_t));
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const uint64_t m12 = load64(block + 12 * sizeof(uint64_t));
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const uint64_t m13 = load64(block + 13 * sizeof(uint64_t));
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const uint64_t m14 = load64(block + 14 * sizeof(uint64_t));
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const uint64_t m15 = load64(block + 15 * sizeof(uint64_t));
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#endif
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row1l = LOADU( &S->h[0] );
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row1h = LOADU( &S->h[2] );
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row2l = LOADU( &S->h[4] );
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row2h = LOADU( &S->h[6] );
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row3l = LOADU( &blake2b_IV[0] );
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row3h = LOADU( &blake2b_IV[2] );
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row4l = _mm_xor_si128( LOADU( &blake2b_IV[4] ), LOADU( &S->t[0] ) );
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row4h = _mm_xor_si128( LOADU( &blake2b_IV[6] ), LOADU( &S->f[0] ) );
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ROUND( 0 );
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ROUND( 1 );
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ROUND( 2 );
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ROUND( 3 );
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ROUND( 4 );
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ROUND( 5 );
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ROUND( 6 );
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ROUND( 7 );
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ROUND( 8 );
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ROUND( 9 );
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ROUND( 10 );
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ROUND( 11 );
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row1l = _mm_xor_si128( row3l, row1l );
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row1h = _mm_xor_si128( row3h, row1h );
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STOREU( &S->h[0], _mm_xor_si128( LOADU( &S->h[0] ), row1l ) );
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STOREU( &S->h[2], _mm_xor_si128( LOADU( &S->h[2] ), row1h ) );
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row2l = _mm_xor_si128( row4l, row2l );
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row2h = _mm_xor_si128( row4h, row2h );
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STOREU( &S->h[4], _mm_xor_si128( LOADU( &S->h[4] ), row2l ) );
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STOREU( &S->h[6], _mm_xor_si128( LOADU( &S->h[6] ), row2h ) );
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}
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int blake2b_update( blake2b_state *S, const void *pin, size_t inlen )
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{
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const unsigned char * in = (const unsigned char *)pin;
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if( inlen > 0 )
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{
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size_t left = S->buflen;
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size_t fill = BLAKE2B_BLOCKBYTES - left;
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if( inlen > fill )
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{
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S->buflen = 0;
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memcpy( S->buf + left, in, fill ); /* Fill buffer */
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blake2b_increment_counter( S, BLAKE2B_BLOCKBYTES );
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blake2b_compress( S, S->buf ); /* Compress */
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in += fill; inlen -= fill;
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while(inlen > BLAKE2B_BLOCKBYTES) {
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blake2b_increment_counter(S, BLAKE2B_BLOCKBYTES);
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blake2b_compress( S, in );
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in += BLAKE2B_BLOCKBYTES;
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inlen -= BLAKE2B_BLOCKBYTES;
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}
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}
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memcpy( S->buf + S->buflen, in, inlen );
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S->buflen += inlen;
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}
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return 0;
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}
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int blake2b_final( blake2b_state *S, void *out, size_t outlen )
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{
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if( out == NULL || outlen < S->outlen )
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return -1;
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if( blake2b_is_lastblock( S ) )
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return -1;
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blake2b_increment_counter( S, S->buflen );
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blake2b_set_lastblock( S );
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memset( S->buf + S->buflen, 0, BLAKE2B_BLOCKBYTES - S->buflen ); /* Padding */
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blake2b_compress( S, S->buf );
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memcpy( out, &S->h[0], S->outlen );
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return 0;
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}
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int blake2b( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen )
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{
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blake2b_state S[1];
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/* Verify parameters */
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if ( NULL == in && inlen > 0 ) return -1;
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if ( NULL == out ) return -1;
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if( NULL == key && keylen > 0 ) return -1;
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if( !outlen || outlen > BLAKE2B_OUTBYTES ) return -1;
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if( keylen > BLAKE2B_KEYBYTES ) return -1;
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if( keylen )
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{
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if( blake2b_init_key( S, outlen, key, keylen ) < 0 ) return -1;
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}
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else
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{
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if( blake2b_init( S, outlen ) < 0 ) return -1;
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}
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blake2b_update( S, ( const uint8_t * )in, inlen );
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blake2b_final( S, out, outlen );
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return 0;
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}
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int blake2( void *out, size_t outlen, const void *in, size_t inlen, const void *key, size_t keylen ) {
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return blake2b(out, outlen, in, inlen, key, keylen);
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}
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#if defined(SUPERCOP)
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int crypto_hash( unsigned char *out, unsigned char *in, unsigned long long inlen )
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{
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return blake2b( out, BLAKE2B_OUTBYTES, in, inlen, NULL, 0 );
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}
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#endif
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#if defined(BLAKE2B_SELFTEST)
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#include <string.h>
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#include "blake2-kat.h"
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int main( void )
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{
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uint8_t key[BLAKE2B_KEYBYTES];
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uint8_t buf[BLAKE2_KAT_LENGTH];
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size_t i, step;
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for( i = 0; i < BLAKE2B_KEYBYTES; ++i )
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key[i] = ( uint8_t )i;
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for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
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buf[i] = ( uint8_t )i;
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/* Test simple API */
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for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
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{
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uint8_t hash[BLAKE2B_OUTBYTES];
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blake2b( hash, BLAKE2B_OUTBYTES, buf, i, key, BLAKE2B_KEYBYTES );
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if( 0 != memcmp( hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES ) )
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{
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goto fail;
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}
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}
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/* Test streaming API */
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for(step = 1; step < BLAKE2B_BLOCKBYTES; ++step) {
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for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
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uint8_t hash[BLAKE2B_OUTBYTES];
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blake2b_state S;
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uint8_t * p = buf;
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size_t mlen = i;
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int err = 0;
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if( (err = blake2b_init_key(&S, BLAKE2B_OUTBYTES, key, BLAKE2B_KEYBYTES)) < 0 ) {
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goto fail;
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}
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while (mlen >= step) {
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if ( (err = blake2b_update(&S, p, step)) < 0 ) {
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goto fail;
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}
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mlen -= step;
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p += step;
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}
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if ( (err = blake2b_update(&S, p, mlen)) < 0) {
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goto fail;
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}
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if ( (err = blake2b_final(&S, hash, BLAKE2B_OUTBYTES)) < 0) {
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goto fail;
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}
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if (0 != memcmp(hash, blake2b_keyed_kat[i], BLAKE2B_OUTBYTES)) {
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goto fail;
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}
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}
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}
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puts( "ok" );
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return 0;
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fail:
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puts("error");
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return -1;
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}
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#endif
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