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Diffstat (limited to 'src/basic/siphash24.c')
-rw-r--r--src/basic/siphash24.c58
1 files changed, 32 insertions, 26 deletions
diff --git a/src/basic/siphash24.c b/src/basic/siphash24.c
index 86d4975ff4..8f2f1f5534 100644
--- a/src/basic/siphash24.c
+++ b/src/basic/siphash24.c
@@ -57,6 +57,8 @@ struct siphash {
u64 v1;
u64 v2;
u64 v3;
+ u64 padding;
+ size_t inlen;
};
static void siphash_init(struct siphash *state, const uint8_t k[16]) {
@@ -70,26 +72,27 @@ static void siphash_init(struct siphash *state, const uint8_t k[16]) {
state->v1 = 0x646f72616e646f6dULL ^ k1;
state->v2 = 0x6c7967656e657261ULL ^ k0;
state->v3 = 0x7465646279746573ULL ^ k1;
+ state->padding = 0;
+ state->inlen = 0;
}
static void siphash24_compress(const void *_in, size_t inlen, struct siphash *state) {
- u64 b;
u64 m;
const u8 *in = _in;
const u8 *end = in + inlen - ( inlen % sizeof( u64 ) );
const int left = inlen & 7;
- b = ( ( u64 )inlen ) << 56;
+ state->inlen = inlen;
for ( ; in != end; in += 8 )
{
m = U8TO64_LE( in );
#ifdef DEBUG
- printf( "(%3d) v0 %08x %08x\n", ( int )inlen, ( u32 )( state->v0 >> 32 ), ( u32 )state->v0 );
- printf( "(%3d) v1 %08x %08x\n", ( int )inlen, ( u32 )( state->v1 >> 32 ), ( u32 )state->v1 );
- printf( "(%3d) v2 %08x %08x\n", ( int )inlen, ( u32 )( state->v2 >> 32 ), ( u32 )state->v2 );
- printf( "(%3d) v3 %08x %08x\n", ( int )inlen, ( u32 )( state->v3 >> 32 ), ( u32 )state->v3 );
- printf( "(%3d) compress %08x %08x\n", ( int )inlen, ( u32 )( m >> 32 ), ( u32 )m );
+ printf( "(%3d) v0 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v0 >> 32 ), ( u32 )state->v0 );
+ printf( "(%3d) v1 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v1 >> 32 ), ( u32 )state->v1 );
+ printf( "(%3d) v2 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v2 >> 32 ), ( u32 )state->v2 );
+ printf( "(%3d) v3 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v3 >> 32 ), ( u32 )state->v3 );
+ printf( "(%3d) compress %08x %08x\n", ( int )state->inlen, ( u32 )( m >> 32 ), ( u32 )m );
#endif
state->v3 ^= m;
SIPROUND(state);
@@ -99,43 +102,46 @@ static void siphash24_compress(const void *_in, size_t inlen, struct siphash *st
switch( left )
{
- case 7: b |= ( ( u64 )in[ 6] ) << 48;
+ case 7: state->padding |= ( ( u64 )in[ 6] ) << 48;
- case 6: b |= ( ( u64 )in[ 5] ) << 40;
+ case 6: state->padding |= ( ( u64 )in[ 5] ) << 40;
- case 5: b |= ( ( u64 )in[ 4] ) << 32;
+ case 5: state->padding |= ( ( u64 )in[ 4] ) << 32;
- case 4: b |= ( ( u64 )in[ 3] ) << 24;
+ case 4: state->padding |= ( ( u64 )in[ 3] ) << 24;
- case 3: b |= ( ( u64 )in[ 2] ) << 16;
+ case 3: state->padding |= ( ( u64 )in[ 2] ) << 16;
- case 2: b |= ( ( u64 )in[ 1] ) << 8;
+ case 2: state->padding |= ( ( u64 )in[ 1] ) << 8;
- case 1: b |= ( ( u64 )in[ 0] ); break;
+ case 1: state->padding |= ( ( u64 )in[ 0] ); break;
case 0: break;
}
+}
+
+static u64 siphash24_finalize(struct siphash *state) {
+ u64 b;
+ b = state->padding | (( ( u64 )state->inlen ) << 56);
#ifdef DEBUG
- printf( "(%3d) v0 %08x %08x\n", ( int )inlen, ( u32 )( state->v0 >> 32 ), ( u32 )state->v0 );
- printf( "(%3d) v1 %08x %08x\n", ( int )inlen, ( u32 )( state->v1 >> 32 ), ( u32 )state->v1 );
- printf( "(%3d) v2 %08x %08x\n", ( int )inlen, ( u32 )( state->v2 >> 32 ), ( u32 )state->v2 );
- printf( "(%3d) v3 %08x %08x\n", ( int )inlen, ( u32 )( state->v3 >> 32 ), ( u32 )state->v3 );
- printf( "(%3d) padding %08x %08x\n", ( int )inlen, ( u32 )( b >> 32 ), ( u32 )b );
+ printf( "(%3d) v0 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v0 >> 32 ), ( u32 )state->v0 );
+ printf( "(%3d) v1 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v1 >> 32 ), ( u32 )state->v1 );
+ printf( "(%3d) v2 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v2 >> 32 ), ( u32 )state->v2 );
+ printf( "(%3d) v3 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v3 >> 32 ), ( u32 )state->v3 );
+ printf( "(%3d) padding %08x %08x\n", ( int )state->inlen, ( u32 )( state->padding >> 32 ), ( u32 )state->padding );
#endif
state->v3 ^= b;
SIPROUND(state);
SIPROUND(state);
state->v0 ^= b;
+
#ifdef DEBUG
- printf( "(%3d) v0 %08x %08x\n", ( int )inlen, ( u32 )( state->v0 >> 32 ), ( u32 )state->v0 );
- printf( "(%3d) v1 %08x %08x\n", ( int )inlen, ( u32 )( state->v1 >> 32 ), ( u32 )state->v1 );
- printf( "(%3d) v2 %08x %08x\n", ( int )inlen, ( u32 )( state->v2 >> 32 ), ( u32 )state->v2 );
- printf( "(%3d) v3 %08x %08x\n", ( int )inlen, ( u32 )( state->v3 >> 32 ), ( u32 )state->v3 );
+ printf( "(%3d) v0 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v0 >> 32 ), ( u32 )state->v0 );
+ printf( "(%3d) v1 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v1 >> 32 ), ( u32 )state->v1 );
+ printf( "(%3d) v2 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v2 >> 32 ), ( u32 )state->v2 );
+ printf( "(%3d) v3 %08x %08x\n", ( int )state->inlen, ( u32 )( state->v3 >> 32 ), ( u32 )state->v3 );
#endif
-}
-
-static u64 siphash24_finalize(struct siphash *state) {
state->v2 ^= 0xff;
SIPROUND(state);
SIPROUND(state);