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La Ancapo 2026-01-25 02:27:22 +01:00
commit c101616e62
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35
bundled/cbits/ref10/keypair.c Normal file
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#include <string.h>
#include "randombytes.h"
#include "ed25519.h"
#include "sha512.h"
#include "ge.h"
int ed25519_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 ed25519_sign_keypair(unsigned char *pk, unsigned char *sk)
{
unsigned char seed[32];
int ret;
ed25519_randombytes(seed, sizeof seed);
ret = ed25519_sign_seed_keypair(pk, sk, seed);
memset(seed, 0, sizeof seed);
return ret;
}