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-rw-r--r--src/basic/siphash24.c79
1 files changed, 43 insertions, 36 deletions
diff --git a/src/basic/siphash24.c b/src/basic/siphash24.c
index e7adfe48c..86d4975ff 100644
--- a/src/basic/siphash24.c
+++ b/src/basic/siphash24.c
@@ -72,43 +72,29 @@ static void siphash_init(struct siphash *state, const uint8_t k[16]) {
state->v3 = 0x7465646279746573ULL ^ k1;
}
-static u64 siphash24_finalize(struct siphash *state) {
- state->v2 ^= 0xff;
- SIPROUND(state);
- SIPROUND(state);
- SIPROUND(state);
- SIPROUND(state);
-
- return state->v0 ^ state->v1 ^ state->v2 ^ state->v3;
-}
-
-/* SipHash-2-4 */
-void siphash24(uint8_t out[8], const void *_in, size_t inlen, const uint8_t k[16])
-{
- struct siphash state;
+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;
- siphash_init(&state, k);
+ b = ( ( u64 )inlen ) << 56;
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) 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 );
#endif
- state.v3 ^= m;
- SIPROUND(&state);
- SIPROUND(&state);
- state.v0 ^= m;
+ state->v3 ^= m;
+ SIPROUND(state);
+ SIPROUND(state);
+ state->v0 ^= m;
}
switch( left )
@@ -131,22 +117,43 @@ void siphash24(uint8_t out[8], const void *_in, size_t inlen, const uint8_t k[16
}
#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 )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 );
#endif
- state.v3 ^= b;
- SIPROUND(&state);
- SIPROUND(&state);
- state.v0 ^= b;
+ 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 )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 );
#endif
+}
+
+static u64 siphash24_finalize(struct siphash *state) {
+ state->v2 ^= 0xff;
+ SIPROUND(state);
+ SIPROUND(state);
+ SIPROUND(state);
+ SIPROUND(state);
+
+ return state->v0 ^ state->v1 ^ state->v2 ^ state->v3;
+}
+
+/* SipHash-2-4 */
+void siphash24(uint8_t out[8], const void *_in, size_t inlen, const uint8_t k[16])
+{
+ struct siphash state;
+ u64 b;
+
+ siphash_init(&state, k);
+
+ siphash24_compress(_in, inlen, &state);
b = siphash24_finalize(&state);