diff options
Diffstat (limited to 'src/hash.c')
| -rw-r--r-- | src/hash.c | 290 |
1 files changed, 15 insertions, 275 deletions
@@ -2,19 +2,18 @@ #include <assert.h> #include <stdbool.h> +#include <stddef.h> #include <stdio.h> #include <stdint.h> #include <string.h> #include <pthread.h> +#include <siphash.h> + #include "logerr.h" #include "random.h" #include "hash.h" -#ifdef TEST -#include "testing.h" -#endif - // FIXME: verify that this is the correct type of mutex for the use case static pthread_mutex_t @@ -96,7 +95,19 @@ out: return rc; } +/** + * @tags infallible +*/ +void +hash(const size_t len, const void *const in, uint8_t out[OUTPUT_LENGTH]) { + assert(SEED.initialized && "Missing call to hash_init() before using hash()."); + siphash(in, len, SEED.bytes, out, 16); + return; +} + + #ifdef TEST +#include "testing.h" static void * hash_init_thread(void *data) { int *ret = (int *)data; @@ -306,274 +317,7 @@ out: } return rc; } -#endif - - -#define ROTL(x, b) (uint64_t)(((x) << (b)) | ((x) >> (64 - (b)))) - -#define U32TO8_LE(p, v) \ - (p)[0] = (uint8_t)((v)); \ - (p)[1] = (uint8_t)((v) >> 8); \ - (p)[2] = (uint8_t)((v) >> 16); \ - (p)[3] = (uint8_t)((v) >> 24); - -#define U64TO8_LE(p, v) \ - U32TO8_LE((p), (uint32_t)((v))); \ - U32TO8_LE((p) + 4, (uint32_t)((v) >> 32)); - -#define U8TO64_LE(p) \ - (((uint64_t)((p)[0])) | ((uint64_t)((p)[1]) << 8) | \ - ((uint64_t)((p)[2]) << 16) | ((uint64_t)((p)[3]) << 24) | \ - ((uint64_t)((p)[4]) << 32) | ((uint64_t)((p)[5]) << 40) | \ - ((uint64_t)((p)[6]) << 48) | ((uint64_t)((p)[7]) << 56)) - -#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) - -/** - * Computes a SipHash value - * [in] key: pointer to the key data (read-only), must be 16 bytes - * [in] input: pointer to input data (read-only) - * [in] inlen: input data length in bytes (any size_t value) - * [out] out: pointer to output data (write-only), 16 bytes must be allocated - * - * @tags infallible -*/ -static void -sip_hash( - const uint8_t *const key, - const size_t inlen, - const void *const input, - uint8_t out[OUTPUT_LENGTH] -) { - static const int cROUNDS = 2; - static const int dROUNDS = 4; - - const unsigned char *ni = (const unsigned char *)input; - const unsigned char *kk = (const unsigned char *)key; - - uint64_t v0 = UINT64_C(0x736f6d6570736575); - uint64_t v1 = UINT64_C(0x646f72616e646f6d); - uint64_t v2 = UINT64_C(0x6c7967656e657261); - uint64_t v3 = UINT64_C(0x7465646279746573); - uint64_t k0 = U8TO64_LE(kk); /// Here we are relying on `key` to - uint64_t k1 = U8TO64_LE(kk + 8); /// be 16 bytes long. - uint64_t m; - int i; - const unsigned char *end = ni + inlen - (inlen % sizeof(uint64_t)); - const int left = inlen & 7; - uint64_t b = ((uint64_t)inlen) << 56; - v3 ^= k1; - v2 ^= k0; - v1 ^= k1; - v0 ^= k0; - - v1 ^= 0xee; - - for (; ni != end; ni += 8) { - m = U8TO64_LE(ni); - v3 ^= m; - - for (i = 0; i < cROUNDS; ++i) { - SIPROUND; - } - - v0 ^= m; - } - - switch (left) { - case 7: - b |= ((uint64_t)ni[6]) << 48; - /* fall-through */ - case 6: - b |= ((uint64_t)ni[5]) << 40; - /* fall-through */ - case 5: - b |= ((uint64_t)ni[4]) << 32; - /* fall-through */ - case 4: - b |= ((uint64_t)ni[3]) << 24; - /* fall-through */ - case 3: - b |= ((uint64_t)ni[2]) << 16; - /* fall-through */ - case 2: - b |= ((uint64_t)ni[1]) << 8; - /* fall-through */ - case 1: - b |= ((uint64_t)ni[0]); - break; - case 0: - break; - } - - v3 ^= b; - - for (i = 0; i < cROUNDS; ++i) { - SIPROUND; - } - - v0 ^= b; - - v2 ^= 0xee; - - for (i = 0; i < dROUNDS; ++i) { - SIPROUND; - } - - b = v0 ^ v1 ^ v2 ^ v3; - U64TO8_LE(out, b); - - v1 ^= 0xdd; - - for (i = 0; i < dROUNDS; ++i) { - SIPROUND; - } - - b = v0 ^ v1 ^ v2 ^ v3; - U64TO8_LE(out + 8, b); - - return; -} - -#ifdef TEST -static const uint8_t -TEST_VECTORS[64][OUTPUT_LENGTH] = { - { 0xa3, 0x81, 0x7f, 0x04, 0xba, 0x25, 0xa8, 0xe6, 0x6d, 0xf6, 0x72, 0x14, 0xc7, 0x55, 0x02, 0x93 }, - { 0xda, 0x87, 0xc1, 0xd8, 0x6b, 0x99, 0xaf, 0x44, 0x34, 0x76, 0x59, 0x11, 0x9b, 0x22, 0xfc, 0x45 }, - { 0x81, 0x77, 0x22, 0x8d, 0xa4, 0xa4, 0x5d, 0xc7, 0xfc, 0xa3, 0x8b, 0xde, 0xf6, 0x0a, 0xff, 0xe4 }, - { 0x9c, 0x70, 0xb6, 0x0c, 0x52, 0x67, 0xa9, 0x4e, 0x5f, 0x33, 0xb6, 0xb0, 0x29, 0x85, 0xed, 0x51 }, - { 0xf8, 0x81, 0x64, 0xc1, 0x2d, 0x9c, 0x8f, 0xaf, 0x7d, 0x0f, 0x6e, 0x7c, 0x7b, 0xcd, 0x55, 0x79 }, - { 0x13, 0x68, 0x87, 0x59, 0x80, 0x77, 0x6f, 0x88, 0x54, 0x52, 0x7a, 0x07, 0x69, 0x0e, 0x96, 0x27 }, - { 0x14, 0xee, 0xca, 0x33, 0x8b, 0x20, 0x86, 0x13, 0x48, 0x5e, 0xa0, 0x30, 0x8f, 0xd7, 0xa1, 0x5e }, - { 0xa1, 0xf1, 0xeb, 0xbe, 0xd8, 0xdb, 0xc1, 0x53, 0xc0, 0xb8, 0x4a, 0xa6, 0x1f, 0xf0, 0x82, 0x39 }, - { 0x3b, 0x62, 0xa9, 0xba, 0x62, 0x58, 0xf5, 0x61, 0x0f, 0x83, 0xe2, 0x64, 0xf3, 0x14, 0x97, 0xb4 }, - { 0x26, 0x44, 0x99, 0x06, 0x0a, 0xd9, 0xba, 0xab, 0xc4, 0x7f, 0x8b, 0x02, 0xbb, 0x6d, 0x71, 0xed }, - { 0x00, 0x11, 0x0d, 0xc3, 0x78, 0x14, 0x69, 0x56, 0xc9, 0x54, 0x47, 0xd3, 0xf3, 0xd0, 0xfb, 0xba }, - { 0x01, 0x51, 0xc5, 0x68, 0x38, 0x6b, 0x66, 0x77, 0xa2, 0xb4, 0xdc, 0x6f, 0x81, 0xe5, 0xdc, 0x18 }, - { 0xd6, 0x26, 0xb2, 0x66, 0x90, 0x5e, 0xf3, 0x58, 0x82, 0x63, 0x4d, 0xf6, 0x85, 0x32, 0xc1, 0x25 }, - { 0x98, 0x69, 0xe2, 0x47, 0xe9, 0xc0, 0x8b, 0x10, 0xd0, 0x29, 0x93, 0x4f, 0xc4, 0xb9, 0x52, 0xf7 }, - { 0x31, 0xfc, 0xef, 0xac, 0x66, 0xd7, 0xde, 0x9c, 0x7e, 0xc7, 0x48, 0x5f, 0xe4, 0x49, 0x49, 0x02 }, - { 0x54, 0x93, 0xe9, 0x99, 0x33, 0xb0, 0xa8, 0x11, 0x7e, 0x08, 0xec, 0x0f, 0x97, 0xcf, 0xc3, 0xd9 }, - { 0x6e, 0xe2, 0xa4, 0xca, 0x67, 0xb0, 0x54, 0xbb, 0xfd, 0x33, 0x15, 0xbf, 0x85, 0x23, 0x05, 0x77 }, - { 0x47, 0x3d, 0x06, 0xe8, 0x73, 0x8d, 0xb8, 0x98, 0x54, 0xc0, 0x66, 0xc4, 0x7a, 0xe4, 0x77, 0x40 }, - { 0xa4, 0x26, 0xe5, 0xe4, 0x23, 0xbf, 0x48, 0x85, 0x29, 0x4d, 0xa4, 0x81, 0xfe, 0xae, 0xf7, 0x23 }, - { 0x78, 0x01, 0x77, 0x31, 0xcf, 0x65, 0xfa, 0xb0, 0x74, 0xd5, 0x20, 0x89, 0x52, 0x51, 0x2e, 0xb1 }, - { 0x9e, 0x25, 0xfc, 0x83, 0x3f, 0x22, 0x90, 0x73, 0x3e, 0x93, 0x44, 0xa5, 0xe8, 0x38, 0x39, 0xeb }, - { 0x56, 0x8e, 0x49, 0x5a, 0xbe, 0x52, 0x5a, 0x21, 0x8a, 0x22, 0x14, 0xcd, 0x3e, 0x07, 0x1d, 0x12 }, - { 0x4a, 0x29, 0xb5, 0x45, 0x52, 0xd1, 0x6b, 0x9a, 0x46, 0x9c, 0x10, 0x52, 0x8e, 0xff, 0x0a, 0xae }, - { 0xc9, 0xd1, 0x84, 0xdd, 0xd5, 0xa9, 0xf5, 0xe0, 0xcf, 0x8c, 0xe2, 0x9a, 0x9a, 0xbf, 0x69, 0x1c }, - { 0x2d, 0xb4, 0x79, 0xae, 0x78, 0xbd, 0x50, 0xd8, 0x88, 0x2a, 0x8a, 0x17, 0x8a, 0x61, 0x32, 0xad }, - { 0x8e, 0xce, 0x5f, 0x04, 0x2d, 0x5e, 0x44, 0x7b, 0x50, 0x51, 0xb9, 0xea, 0xcb, 0x8d, 0x8f, 0x6f }, - { 0x9c, 0x0b, 0x53, 0xb4, 0xb3, 0xc3, 0x07, 0xe8, 0x7e, 0xae, 0xe0, 0x86, 0x78, 0x14, 0x1f, 0x66 }, - { 0xab, 0xf2, 0x48, 0xaf, 0x69, 0xa6, 0xea, 0xe4, 0xbf, 0xd3, 0xeb, 0x2f, 0x12, 0x9e, 0xeb, 0x94 }, - { 0x06, 0x64, 0xda, 0x16, 0x68, 0x57, 0x4b, 0x88, 0xb9, 0x35, 0xf3, 0x02, 0x73, 0x58, 0xae, 0xf4 }, - { 0xaa, 0x4b, 0x9d, 0xc4, 0xbf, 0x33, 0x7d, 0xe9, 0x0c, 0xd4, 0xfd, 0x3c, 0x46, 0x7c, 0x6a, 0xb7 }, - { 0xea, 0x5c, 0x7f, 0x47, 0x1f, 0xaf, 0x6b, 0xde, 0x2b, 0x1a, 0xd7, 0xd4, 0x68, 0x6d, 0x22, 0x87 }, - { 0x29, 0x39, 0xb0, 0x18, 0x32, 0x23, 0xfa, 0xfc, 0x17, 0x23, 0xde, 0x4f, 0x52, 0xc4, 0x3d, 0x35 }, - { 0x7c, 0x39, 0x56, 0xca, 0x5e, 0xea, 0xfc, 0x3e, 0x36, 0x3e, 0x9d, 0x55, 0x65, 0x46, 0xeb, 0x68 }, - { 0x77, 0xc6, 0x07, 0x71, 0x46, 0xf0, 0x1c, 0x32, 0xb6, 0xb6, 0x9d, 0x5f, 0x4e, 0xa9, 0xff, 0xcf }, - { 0x37, 0xa6, 0x98, 0x6c, 0xb8, 0x84, 0x7e, 0xdf, 0x09, 0x25, 0xf0, 0xf1, 0x30, 0x9b, 0x54, 0xde }, - { 0xa7, 0x05, 0xf0, 0xe6, 0x9d, 0xa9, 0xa8, 0xf9, 0x07, 0x24, 0x1a, 0x2e, 0x92, 0x3c, 0x8c, 0xc8 }, - { 0x3d, 0xc4, 0x7d, 0x1f, 0x29, 0xc4, 0x48, 0x46, 0x1e, 0x9e, 0x76, 0xed, 0x90, 0x4f, 0x67, 0x11 }, - { 0x0d, 0x62, 0xbf, 0x01, 0xe6, 0xfc, 0x0e, 0x1a, 0x0d, 0x3c, 0x47, 0x51, 0xc5, 0xd3, 0x69, 0x2b }, - { 0x8c, 0x03, 0x46, 0x8b, 0xca, 0x7c, 0x66, 0x9e, 0xe4, 0xfd, 0x5e, 0x08, 0x4b, 0xbe, 0xe7, 0xb5 }, - { 0x52, 0x8a, 0x5b, 0xb9, 0x3b, 0xaf, 0x2c, 0x9c, 0x44, 0x73, 0xcc, 0xe5, 0xd0, 0xd2, 0x2b, 0xd9 }, - { 0xdf, 0x6a, 0x30, 0x1e, 0x95, 0xc9, 0x5d, 0xad, 0x97, 0xae, 0x0c, 0xc8, 0xc6, 0x91, 0x3b, 0xd8 }, - { 0x80, 0x11, 0x89, 0x90, 0x2c, 0x85, 0x7f, 0x39, 0xe7, 0x35, 0x91, 0x28, 0x5e, 0x70, 0xb6, 0xdb }, - { 0xe6, 0x17, 0x34, 0x6a, 0xc9, 0xc2, 0x31, 0xbb, 0x36, 0x50, 0xae, 0x34, 0xcc, 0xca, 0x0c, 0x5b }, - { 0x27, 0xd9, 0x34, 0x37, 0xef, 0xb7, 0x21, 0xaa, 0x40, 0x18, 0x21, 0xdc, 0xec, 0x5a, 0xdf, 0x89 }, - { 0x89, 0x23, 0x7d, 0x9d, 0xed, 0x9c, 0x5e, 0x78, 0xd8, 0xb1, 0xc9, 0xb1, 0x66, 0xcc, 0x73, 0x42 }, - { 0x4a, 0x6d, 0x80, 0x91, 0xbf, 0x5e, 0x7d, 0x65, 0x11, 0x89, 0xfa, 0x94, 0xa2, 0x50, 0xb1, 0x4c }, - { 0x0e, 0x33, 0xf9, 0x60, 0x55, 0xe7, 0xae, 0x89, 0x3f, 0xfc, 0x0e, 0x3d, 0xcf, 0x49, 0x29, 0x02 }, - { 0xe6, 0x1c, 0x43, 0x2b, 0x72, 0x0b, 0x19, 0xd1, 0x8e, 0xc8, 0xd8, 0x4b, 0xdc, 0x63, 0x15, 0x1b }, - { 0xf7, 0xe5, 0xae, 0xf5, 0x49, 0xf7, 0x82, 0xcf, 0x37, 0x90, 0x55, 0xa6, 0x08, 0x26, 0x9b, 0x16 }, - { 0x43, 0x8d, 0x03, 0x0f, 0xd0, 0xb7, 0xa5, 0x4f, 0xa8, 0x37, 0xf2, 0xad, 0x20, 0x1a, 0x64, 0x03 }, - { 0xa5, 0x90, 0xd3, 0xee, 0x4f, 0xbf, 0x04, 0xe3, 0x24, 0x7e, 0x0d, 0x27, 0xf2, 0x86, 0x42, 0x3f }, - { 0x5f, 0xe2, 0xc1, 0xa1, 0x72, 0xfe, 0x93, 0xc4, 0xb1, 0x5c, 0xd3, 0x7c, 0xae, 0xf9, 0xf5, 0x38 }, - { 0x2c, 0x97, 0x32, 0x5c, 0xbd, 0x06, 0xb3, 0x6e, 0xb2, 0x13, 0x3d, 0xd0, 0x8b, 0x3a, 0x01, 0x7c }, - { 0x92, 0xc8, 0x14, 0x22, 0x7a, 0x6b, 0xca, 0x94, 0x9f, 0xf0, 0x65, 0x9f, 0x00, 0x2a, 0xd3, 0x9e }, - { 0xdc, 0xe8, 0x50, 0x11, 0x0b, 0xd8, 0x32, 0x8c, 0xfb, 0xd5, 0x08, 0x41, 0xd6, 0x91, 0x1d, 0x87 }, - { 0x67, 0xf1, 0x49, 0x84, 0xc7, 0xda, 0x79, 0x12, 0x48, 0xe3, 0x2b, 0xb5, 0x92, 0x25, 0x83, 0xda }, - { 0x19, 0x38, 0xf2, 0xcf, 0x72, 0xd5, 0x4e, 0xe9, 0x7e, 0x94, 0x16, 0x6f, 0xa9, 0x1d, 0x2a, 0x36 }, - { 0x74, 0x48, 0x1e, 0x96, 0x46, 0xed, 0x49, 0xfe, 0x0f, 0x62, 0x24, 0x30, 0x16, 0x04, 0x69, 0x8e }, - { 0x57, 0xfc, 0xa5, 0xde, 0x98, 0xa9, 0xd6, 0xd8, 0x00, 0x64, 0x38, 0xd0, 0x58, 0x3d, 0x8a, 0x1d }, - { 0x9f, 0xec, 0xde, 0x1c, 0xef, 0xdc, 0x1c, 0xbe, 0xd4, 0x76, 0x36, 0x74, 0xd9, 0x57, 0x53, 0x59 }, - { 0xe3, 0x04, 0x0c, 0x00, 0xeb, 0x28, 0xf1, 0x53, 0x66, 0xca, 0x73, 0xcb, 0xd8, 0x72, 0xe7, 0x40 }, - { 0x76, 0x97, 0x00, 0x9a, 0x6a, 0x83, 0x1d, 0xfe, 0xcc, 0xa9, 0x1c, 0x59, 0x93, 0x67, 0x0f, 0x7a }, - { 0x58, 0x53, 0x54, 0x23, 0x21, 0xf5, 0x67, 0xa0, 0x05, 0xd5, 0x47, 0xa4, 0xf0, 0x47, 0x59, 0xbd }, - { 0x51, 0x50, 0xd1, 0x77, 0x2f, 0x50, 0x83, 0x4a, 0x50, 0x3e, 0x06, 0x9a, 0x97, 0x3f, 0xbd, 0x7c }, -}; -/** - * @tags infallible -*/ -static void -test_sip_hash(void) { - test_start("sip_hash()"); - - { - testing("upstream test vectors"); - - const size_t LEN = 64; - uint8_t in[64 /* LEN */]; - - uint8_t out[OUTPUT_LENGTH]; - struct Seed key; - - const uint8_t length = sizeof(SEED.bytes) / sizeof(SEED.bytes[0]); - for (uint8_t i = 0; i < length; ++i) { - key.bytes[i] = i; - } - - for (uint8_t i = 0; i < LEN; ++i) { - in[i] = i; - } - - for (uint8_t i = 0; i < LEN; ++i) { - sip_hash(key.bytes, i, in, out); - for (uint8_t j = 0; j < OUTPUT_LENGTH; j++) { - assert(out[j] == TEST_VECTORS[i][j]); - } - } - - test_ok(); - } - - return; -} -#endif - - -/** - * @tags infallible -*/ -void -hash(const size_t len, const void *const in, uint8_t out[OUTPUT_LENGTH]) { - assert(SEED.initialized && "Missing call to hash_init() before using hash()."); - sip_hash(SEED.bytes, len, in, out); - return; -} - -#ifdef TEST -/** - * @tags infallible -*/ static void test_hash(void) { test_start("hash()"); @@ -621,10 +365,7 @@ test_hash(void) { return; } -#endif - -#ifdef TEST int main(void) { int rc = 0; @@ -635,7 +376,6 @@ main(void) { goto out; } - test_sip_hash(); test_hash(); out: |