VeraCrypt
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diff --git a/src/Crypto/blake2s.c b/src/Crypto/blake2s.c
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+/*
+ BLAKE2 reference source code package - optimized C implementations
+
+ Copyright 2012, Samuel Neves <sneves@dei.uc.pt>. You may use this under the
+ terms of the CC0, the OpenSSL Licence, or the Apache Public License 2.0, at
+ your option. The terms of these licenses can be found at:
+
+ - CC0 1.0 Universal : http://creativecommons.org/publicdomain/zero/1.0
+ - OpenSSL license : https://www.openssl.org/source/license.html
+ - Apache 2.0 : http://www.apache.org/licenses/LICENSE-2.0
+
+ More information about the BLAKE2 hash function can be found at
+ https://blake2.net.
+*/
+
+/* Adapted for VeraCrypt */
+
+#include "blake2.h"
+#include "Common/Endian.h"
+#include "Crypto/config.h"
+#include "Crypto/cpu.h"
+#include "Crypto/misc.h"
+
+// load32 is always called in SSE case which implies little endian
+#define load32(x) *((uint32*) (x))
+
+const uint32 blake2s_IV[8] =
+{
+ 0x6A09E667UL, 0xBB67AE85UL, 0x3C6EF372UL, 0xA54FF53AUL,
+ 0x510E527FUL, 0x9B05688CUL, 0x1F83D9ABUL, 0x5BE0CD19UL
+};
+
+static const uint8 blake2s_sigma[10][16] =
+{
+ { 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15 } ,
+ { 14, 10, 4, 8, 9, 15, 13, 6, 1, 12, 0, 2, 11, 7, 5, 3 } ,
+ { 11, 8, 12, 0, 5, 2, 15, 13, 10, 14, 3, 6, 7, 1, 9, 4 } ,
+ { 7, 9, 3, 1, 13, 12, 11, 14, 2, 6, 5, 10, 4, 0, 15, 8 } ,
+ { 9, 0, 5, 7, 2, 4, 10, 15, 14, 1, 11, 12, 6, 8, 3, 13 } ,
+ { 2, 12, 6, 10, 0, 11, 8, 3, 4, 13, 7, 5, 15, 14, 1, 9 } ,
+ { 12, 5, 1, 15, 14, 13, 4, 10, 0, 7, 6, 3, 9, 2, 8, 11 } ,
+ { 13, 11, 7, 14, 12, 1, 3, 9, 5, 0, 15, 4, 8, 6, 2, 10 } ,
+ { 6, 15, 14, 9, 11, 3, 0, 8, 12, 2, 13, 7, 1, 4, 10, 5 } ,
+ { 10, 2, 8, 4, 7, 6, 1, 5, 15, 11, 9, 14, 3, 12, 13 , 0 } ,
+};
+
+/* Some helper functions */
+#define blake2s_set_lastnode(S) S->f[1] = (uint32)-1;
+
+#define blake2s_is_lastblock(S) (S->f[0] != 0)
+
+#define blake2s_set_lastblock(S) { \
+ if( S->last_node ) blake2s_set_lastnode( S ); \
+ S->f[0] = (uint32)-1; \
+ }
+
+#define blake2s_increment_counter(S,inc) { \
+ uint64 t = ( (( uint64 )S->t[1]) << 32 ) | S->t[0]; \
+ t += (inc); \
+ S->t[0] = ( uint32 )( t ); \
+ S->t[1] = ( uint32 )( t >> 32 ); \
+ }
+
+/* init2 xors IV with input parameter block */
+void blake2s_init_param( blake2s_state *S, const blake2s_param *P )
+{
+ size_t i;
+ /*blake2s_init0( S ); */
+ const uint8 * v = ( const uint8 * )( blake2s_IV );
+ const uint8 * p = ( const uint8 * )( P );
+ uint8 * h = ( uint8 * )( S->h );
+ /* IV XOR ParamBlock */
+ memset( S, 0, sizeof( blake2s_state ) );
+
+ for( i = 0; i < BLAKE2S_OUTBYTES; ++i ) h[i] = v[i] ^ p[i];
+
+ S->outlen = P->digest_length;
+}
+
+
+#define G(r,i,a,b,c,d) \
+ do { \
+ a = a + b + m[blake2s_sigma[r][2*i+0]]; \
+ d = rotr32(d ^ a, 16); \
+ c = c + d; \
+ b = rotr32(b ^ c, 12); \
+ a = a + b + m[blake2s_sigma[r][2*i+1]]; \
+ d = rotr32(d ^ a, 8); \
+ c = c + d; \
+ b = rotr32(b ^ c, 7); \
+ } while(0)
+
+#define ROUND(r) \
+ do { \
+ G(r,0,v[ 0],v[ 4],v[ 8],v[12]); \
+ G(r,1,v[ 1],v[ 5],v[ 9],v[13]); \
+ G(r,2,v[ 2],v[ 6],v[10],v[14]); \
+ G(r,3,v[ 3],v[ 7],v[11],v[15]); \
+ G(r,4,v[ 0],v[ 5],v[10],v[15]); \
+ G(r,5,v[ 1],v[ 6],v[11],v[12]); \
+ G(r,6,v[ 2],v[ 7],v[ 8],v[13]); \
+ G(r,7,v[ 3],v[ 4],v[ 9],v[14]); \
+ } while(0)
+
+typedef void (*blake2s_compressFn)( blake2s_state *S, const uint8 block[BLAKE2S_BLOCKBYTES] );
+
+blake2s_compressFn blake2s_compress_func = NULL;
+#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32
+extern int blake2s_has_sse2();
+extern int blake2s_has_ssse3();
+extern int blake2s_has_sse41();
+extern void blake2s_compress_sse2( blake2s_state *S, const uint8 block[BLAKE2S_BLOCKBYTES] );
+extern void blake2s_compress_ssse3( blake2s_state *S, const uint8 block[BLAKE2S_BLOCKBYTES] );
+extern void blake2s_compress_sse41( blake2s_state *S, const uint8 block[BLAKE2S_BLOCKBYTES] );
+#endif
+
+
+static void blake2s_compress_std( blake2s_state *S, const uint8 in[BLAKE2S_BLOCKBYTES] )
+{
+ uint32 m[16];
+ uint32 v[16];
+ size_t i;
+
+ for( i = 0; i < 16; ++i ) {
+ m[i] = *((uint32*) (in + i * sizeof( m[i] )));
+ }
+
+ for( i = 0; i < 8; ++i ) {
+ v[i] = S->h[i];
+ }
+
+ v[ 8] = blake2s_IV[0];
+ v[ 9] = blake2s_IV[1];
+ v[10] = blake2s_IV[2];
+ v[11] = blake2s_IV[3];
+ v[12] = S->t[0] ^ blake2s_IV[4];
+ v[13] = S->t[1] ^ blake2s_IV[5];
+ v[14] = S->f[0] ^ blake2s_IV[6];
+ v[15] = S->f[1] ^ blake2s_IV[7];
+
+ ROUND( 0 );
+ ROUND( 1 );
+ ROUND( 2 );
+ ROUND( 3 );
+ ROUND( 4 );
+ ROUND( 5 );
+ ROUND( 6 );
+ ROUND( 7 );
+ ROUND( 8 );
+ ROUND( 9 );
+
+ for( i = 0; i < 8; ++i ) {
+ S->h[i] = S->h[i] ^ v[i] ^ v[i + 8];
+ }
+}
+
+#undef G
+#undef ROUND
+
+
+/* Some sort of default parameter block initialization, for sequential blake2s */
+void blake2s_init( blake2s_state *S )
+{
+ blake2s_param P[1];
+
+ P->digest_length = BLAKE2S_OUTBYTES;
+ P->key_length = 0;
+ P->fanout = 1;
+ P->depth = 1;
+ P->leaf_length = 0;
+ P->node_offset = 0;
+ P->xof_length = 0;
+ P->node_depth = 0;
+ P->inner_length = 0;
+ /* memset(P->reserved, 0, sizeof(P->reserved) ); */
+ memset( P->salt, 0, sizeof( P->salt ) );
+ memset( P->personal, 0, sizeof( P->personal ) );
+
+ blake2s_init_param( S, P );
+
+ if (!blake2s_compress_func)
+ {
+#if CRYPTOPP_BOOL_X64 || CRYPTOPP_BOOL_X86 || CRYPTOPP_BOOL_X32
+ if (HasSSE2() && blake2s_has_sse2())
+ {
+ if (HasSSE41() && blake2s_has_sse41())
+ {
+ blake2s_compress_func = blake2s_compress_sse41;
+ }
+ else
+ if (HasSSSE3() && blake2s_has_ssse3())
+ {
+ blake2s_compress_func = blake2s_compress_ssse3;
+ }
+ else
+ blake2s_compress_func = blake2s_compress_sse2;
+ }
+ else
+#endif
+ blake2s_compress_func = blake2s_compress_std;
+ }
+}
+
+void blake2s_update( blake2s_state *S, const void *pin, size_t inlen )
+{
+ const unsigned char * in = (const unsigned char *)pin;
+ if( inlen > 0 )
+ {
+ size_t left = S->buflen;
+ size_t fill = BLAKE2S_BLOCKBYTES - left;
+ if( inlen > fill )
+ {
+ S->buflen = 0;
+ memcpy( S->buf + left, in, fill ); /* Fill buffer */
+ blake2s_increment_counter( S, BLAKE2S_BLOCKBYTES );
+ blake2s_compress_func( S, S->buf ); /* Compress */
+ in += fill; inlen -= fill;
+ while(inlen > BLAKE2S_BLOCKBYTES) {
+ blake2s_increment_counter(S, BLAKE2S_BLOCKBYTES);
+ blake2s_compress_func( S, in );
+ in += BLAKE2S_BLOCKBYTES;
+ inlen -= BLAKE2S_BLOCKBYTES;
+ }
+ }
+ memcpy( S->buf + S->buflen, in, inlen );
+ S->buflen += inlen;
+ }
+}
+
+int blake2s_final( blake2s_state *S, unsigned char *out )
+{
+ size_t i;
+
+ if( blake2s_is_lastblock( S ) )
+ return -1;
+
+ blake2s_increment_counter( S, (uint32)S->buflen );
+ blake2s_set_lastblock( S );
+ memset( S->buf + S->buflen, 0, BLAKE2S_BLOCKBYTES - S->buflen ); /* Padding */
+ blake2s_compress_func( S, S->buf );
+
+ for( i = 0; i < 8; ++i ) /* Output full hash to temp buffer */
+ {
+#if BYTE_ORDER == LITTLE_ENDIAN
+ *((uint32*) out) = S->h[i];
+#else
+ uint32 w = S->h[i] ;
+ out[0] = (uint8)(w >> 0);
+ out[1] = (uint8)(w >> 8);
+ out[2] = (uint8)(w >> 16);
+ out[3] = (uint8)(w >> 24);
+#endif
+ out += sizeof (uint32);
+ }
+
+ return 0;
+}
+
+/* inlen, at least, should be uint64. Others can be size_t. */
+int blake2s( void *out, const void *in, size_t inlen)
+{
+ blake2s_state S[1];
+
+ /* Verify parameters */
+ if ( NULL == in && inlen > 0 ) return -1;
+
+ if ( NULL == out ) return -1;
+
+ blake2s_init( S );
+
+ blake2s_update( S, ( const uint8 * )in, inlen );
+ blake2s_final( S, (unsigned char*) out );
+ return 0;
+}
+
+#if defined(SUPERCOP)
+int crypto_hash( unsigned char *out, unsigned char *in, unsigned long long inlen )
+{
+ return blake2s( out, BLAKE2S_OUTBYTES, in, inlen, NULL, 0 );
+}
+#endif
+
+#if defined(BLAKE2S_SELFTEST)
+#include <string.h>
+#include "blake2-kat.h"
+int main( void )
+{
+ uint8 key[BLAKE2S_KEYBYTES];
+ uint8 buf[BLAKE2_KAT_LENGTH];
+ size_t i, step;
+
+ for( i = 0; i < BLAKE2S_KEYBYTES; ++i )
+ key[i] = ( uint8 )i;
+
+ for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
+ buf[i] = ( uint8 )i;
+
+ /* Test simple API */
+ for( i = 0; i < BLAKE2_KAT_LENGTH; ++i )
+ {
+ uint8 hash[BLAKE2S_OUTBYTES];
+ blake2s( hash, BLAKE2S_OUTBYTES, buf, i, key, BLAKE2S_KEYBYTES );
+
+ if( 0 != memcmp( hash, blake2s_keyed_kat[i], BLAKE2S_OUTBYTES ) )
+ {
+ goto fail;
+ }
+ }
+
+ /* Test streaming API */
+ for(step = 1; step < BLAKE2S_BLOCKBYTES; ++step) {
+ for (i = 0; i < BLAKE2_KAT_LENGTH; ++i) {
+ uint8 hash[BLAKE2S_OUTBYTES];
+ blake2s_state S;
+ uint8 * p = buf;
+ size_t mlen = i;
+ int err = 0;
+
+ if( (err = blake2s_init_key(&S, BLAKE2S_OUTBYTES, key, BLAKE2S_KEYBYTES)) < 0 ) {
+ goto fail;
+ }
+
+ while (mlen >= step) {
+ if ( (err = blake2s_update(&S, p, step)) < 0 ) {
+ goto fail;
+ }
+ mlen -= step;
+ p += step;
+ }
+ if ( (err = blake2s_update(&S, p, mlen)) < 0) {
+ goto fail;
+ }
+ if ( (err = blake2s_final(&S, hash, BLAKE2S_OUTBYTES)) < 0) {
+ goto fail;
+ }
+
+ if (0 != memcmp(hash, blake2s_keyed_kat[i], BLAKE2S_OUTBYTES)) {
+ goto fail;
+ }
+ }
+ }
+
+ puts( "ok" );
+ return 0;
+fail:
+ puts("error");
+ return -1;
+}
+#endif