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#include <string.h>
#include "api.h"
#include "randombytes.h"
#include "crypto_hash_sha512.h"
#include "ge.h"
int crypto_sign_seed_keypair(unsigned char *pk, unsigned char *sk,
const unsigned char *seed)
{
ge_p3 A;
crypto_hash_sha512(sk,seed,32);
sk[0] &= 248;
sk[31] &= 63;
sk[31] |= 64;
ge_scalarmult_base(&A,sk);
ge_p3_tobytes(pk,&A);
memmove(sk, seed, 32);
memmove(sk + 32, pk, 32);
return 0;
}
int crypto_sign_keypair(unsigned char *pk, unsigned char *sk)
{
unsigned char seed[32];
randombytes(seed,32);
return crypto_sign_seed_keypair(pk,sk,seed);
}
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