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#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "crypto_auth_hmacsha512.h"
#include "crypto_auth_hmacsha512256.h"
#include "crypto_hash_sha512.h"
#include "crypto_verify_32.h"
#include "randombytes.h"
#include "utils.h"
size_t
crypto_auth_hmacsha512256_bytes(void)
{
return crypto_auth_hmacsha512256_BYTES;
}
size_t
crypto_auth_hmacsha512256_keybytes(void)
{
return crypto_auth_hmacsha512256_KEYBYTES;
}
size_t
crypto_auth_hmacsha512256_statebytes(void)
{
return sizeof(crypto_auth_hmacsha512256_state);
}
void
crypto_auth_hmacsha512256_keygen(
unsigned char k[crypto_auth_hmacsha512256_KEYBYTES])
{
randombytes_buf(k, crypto_auth_hmacsha512256_KEYBYTES);
}
int
crypto_auth_hmacsha512256_init(crypto_auth_hmacsha512256_state *state,
const unsigned char *key, size_t keylen)
{
return crypto_auth_hmacsha512_init((crypto_auth_hmacsha512_state *) state,
key, keylen);
}
int
crypto_auth_hmacsha512256_update(crypto_auth_hmacsha512256_state *state,
const unsigned char *in,
unsigned long long inlen)
{
return crypto_auth_hmacsha512_update((crypto_auth_hmacsha512_state *) state,
in, inlen);
}
int
crypto_auth_hmacsha512256_final(crypto_auth_hmacsha512256_state *state,
unsigned char *out)
{
unsigned char out0[64];
crypto_auth_hmacsha512_final((crypto_auth_hmacsha512_state *) state, out0);
memcpy(out, out0, 32);
return 0;
}
int
crypto_auth_hmacsha512256(unsigned char *out, const unsigned char *in,
unsigned long long inlen, const unsigned char *k)
{
crypto_auth_hmacsha512256_state state;
crypto_auth_hmacsha512256_init(&state, k,
crypto_auth_hmacsha512256_KEYBYTES);
crypto_auth_hmacsha512256_update(&state, in, inlen);
crypto_auth_hmacsha512256_final(&state, out);
return 0;
}
int
crypto_auth_hmacsha512256_verify(const unsigned char *h,
const unsigned char *in,
unsigned long long inlen,
const unsigned char *k)
{
unsigned char correct[32];
crypto_auth_hmacsha512256(correct, in, inlen, k);
return crypto_verify_32(h, correct) | (-(h == correct)) |
sodium_memcmp(correct, h, 32);
}
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