monero/src/crypto/hash.h

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2013-11-14 22:28:17 +00:00
#pragma once
#include <assert.h>
#include <stdbool.h>
#include <stddef.h>
#include <stdint.h>
#include "int-util.h"
static inline void *padd(void *p, size_t i) {
return (char *) p + i;
}
static inline const void *cpadd(const void *p, size_t i) {
return (const char *) p + i;
}
static_assert(sizeof(size_t) == 4 || sizeof(size_t) == 8, "size_t must be 4 or 8 bytes long");
static inline void place_length(uint8_t *buffer, size_t bufsize, size_t length) {
if (sizeof(size_t) == 4) {
*(uint32_t *) padd(buffer, bufsize - 4) = swap32be(length);
} else {
*(uint64_t *) padd(buffer, bufsize - 8) = swap64be(length);
}
}
struct keccak_state {
union {
uint8_t b[200];
uint64_t w[25];
};
};
enum {
HASH_SIZE = 32,
HASH_DATA_AREA = 136
};
void keccak(const void *data, size_t length, char *hash);
void keccak_permutation(struct keccak_state *state);