diff --git a/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24_ref.c b/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24_ref.c index ba194cd2..b84e6219 100644 --- a/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24_ref.c +++ b/src/libsodium/crypto_shorthash/siphash24/ref/shorthash_siphash24_ref.c @@ -1,72 +1,82 @@ #include "crypto_shorthash_siphash24.h" #include "private/common.h" -typedef uint64_t u64; -typedef uint32_t u32; -typedef uint8_t u8; +#define SIPROUND \ + do { \ + v0 += v1; \ + v1 = ROTL64(v1, 13); \ + v1 ^= v0; \ + v0 = ROTL64(v0, 32); \ + v2 += v3; \ + v3 = ROTL64(v3, 16); \ + v3 ^= v2; \ + v0 += v3; \ + v3 = ROTL64(v3, 21); \ + v3 ^= v0; \ + v2 += v1; \ + v1 = ROTL64(v1, 17); \ + v1 ^= v2; \ + v2 = ROTL64(v2, 32); \ + } while (0) -#define ROTL(x, b) ROTL64(x, b) - -#define SIPROUND \ - do { \ - v0 += v1; v1=ROTL(v1,13); v1 ^= v0; v0=ROTL(v0,32); \ - v2 += v3; v3=ROTL(v3,16); v3 ^= v2; \ - v0 += v3; v3=ROTL(v3,21); v3 ^= v0; \ - v2 += v1; v1=ROTL(v1,17); v1 ^= v2; v2=ROTL(v2,32); \ - } while(0) - -int crypto_shorthash_siphash24(unsigned char *out, const unsigned char *in, - unsigned long long inlen, const unsigned char *k) +int +crypto_shorthash_siphash24(unsigned char *out, const unsigned char *in, + unsigned long long inlen, const unsigned char *k) { - /* "somepseudorandomlygeneratedbytes" */ - u64 v0 = 0x736f6d6570736575ULL; - u64 v1 = 0x646f72616e646f6dULL; - u64 v2 = 0x6c7967656e657261ULL; - u64 v3 = 0x7465646279746573ULL; - u64 b; - u64 k0 = LOAD64_LE( k ); - u64 k1 = LOAD64_LE( k + 8 ); - u64 m; - const u8 *end = in + inlen - ( inlen % sizeof( u64 ) ); - const int left = inlen & 7; - b = ( ( u64 )inlen ) << 56; - v3 ^= k1; - v2 ^= k0; - v1 ^= k1; - v0 ^= k0; + /* "somepseudorandomlygeneratedbytes" */ + uint64_t v0 = 0x736f6d6570736575ULL; + uint64_t v1 = 0x646f72616e646f6dULL; + uint64_t v2 = 0x6c7967656e657261ULL; + uint64_t v3 = 0x7465646279746573ULL; + uint64_t b; + uint64_t k0 = LOAD64_LE(k); + uint64_t k1 = LOAD64_LE(k + 8); + uint64_t m; + const uint8_t *end = in + inlen - (inlen % sizeof(uint64_t)); + const int left = inlen & 7; + b = ((uint64_t) inlen) << 56; + v3 ^= k1; + v2 ^= k0; + v1 ^= k1; + v0 ^= k0; - for ( ; in != end; in += 8 ) - { - m = LOAD64_LE( in ); - v3 ^= m; + for (; in != end; in += 8) { + m = LOAD64_LE(in); + v3 ^= m; + SIPROUND; + SIPROUND; + v0 ^= m; + } + switch (left) { + case 7: + b |= ((uint64_t) in[6]) << 48; + case 6: + b |= ((uint64_t) in[5]) << 40; + case 5: + b |= ((uint64_t) in[4]) << 32; + case 4: + b |= ((uint64_t) in[3]) << 24; + case 3: + b |= ((uint64_t) in[2]) << 16; + case 2: + b |= ((uint64_t) in[1]) << 8; + case 1: + b |= ((uint64_t) in[0]); + break; + case 0: + break; + } + v3 ^= b; SIPROUND; SIPROUND; - v0 ^= m; - } + v0 ^= b; + v2 ^= 0xff; + SIPROUND; + SIPROUND; + SIPROUND; + SIPROUND; + b = v0 ^ v1 ^ v2 ^ v3; + STORE64_LE(out, b); - switch( left ) - { - case 7: b |= ( ( u64 )in[ 6] ) << 48; - case 6: b |= ( ( u64 )in[ 5] ) << 40; - case 5: b |= ( ( u64 )in[ 4] ) << 32; - case 4: b |= ( ( u64 )in[ 3] ) << 24; - case 3: b |= ( ( u64 )in[ 2] ) << 16; - case 2: b |= ( ( u64 )in[ 1] ) << 8; - case 1: b |= ( ( u64 )in[ 0] ); break; - case 0: break; - } - - v3 ^= b; - SIPROUND; - SIPROUND; - v0 ^= b; - v2 ^= 0xff; - SIPROUND; - SIPROUND; - SIPROUND; - SIPROUND; - b = v0 ^ v1 ^ v2 ^ v3; - STORE64_LE( out, b ); - return 0; + return 0; } -