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