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#define TEST_NAME "ed25519_convert"
#include "cmptest.h"
static const unsigned char keypair_seed[crypto_sign_ed25519_SEEDBYTES]
= { 0x42, 0x11, 0x51, 0xa4, 0x59, 0xfa, 0xea, 0xde, 0x3d, 0x24, 0x71,
0x15, 0xf9, 0x4a, 0xed, 0xae, 0x42, 0x31, 0x81, 0x24, 0x09, 0x5a,
0xfa, 0xbe, 0x4d, 0x14, 0x51, 0xa5, 0x59, 0xfa, 0xed, 0xee };
int main(void)
{
unsigned char ed25519_pk[crypto_sign_ed25519_PUBLICKEYBYTES];
unsigned char ed25519_skpk[crypto_sign_ed25519_SECRETKEYBYTES];
unsigned char curve25519_pk[crypto_scalarmult_curve25519_BYTES];
unsigned char curve25519_pk2[crypto_scalarmult_curve25519_BYTES];
unsigned char curve25519_sk[crypto_scalarmult_curve25519_BYTES];
char curve25519_pk_hex[crypto_scalarmult_curve25519_BYTES * 2 + 1];
char curve25519_sk_hex[crypto_scalarmult_curve25519_BYTES * 2 + 1];
unsigned int i;
crypto_sign_ed25519_seed_keypair(ed25519_pk, ed25519_skpk, keypair_seed);
crypto_sign_ed25519_pk_to_curve25519(curve25519_pk, ed25519_pk);
crypto_sign_ed25519_sk_to_curve25519(curve25519_sk, ed25519_skpk);
sodium_bin2hex(curve25519_pk_hex, sizeof curve25519_pk_hex, curve25519_pk,
sizeof curve25519_pk);
sodium_bin2hex(curve25519_sk_hex, sizeof curve25519_sk_hex, curve25519_sk,
sizeof curve25519_sk);
printf("curve25519 pk: [%s]\n", curve25519_pk_hex);
printf("curve25519 sk: [%s]\n", curve25519_sk_hex);
for (i = 0U; i < 500U; i++) {
crypto_sign_ed25519_keypair(ed25519_pk, ed25519_skpk);
crypto_sign_ed25519_pk_to_curve25519(curve25519_pk, ed25519_pk);
crypto_sign_ed25519_sk_to_curve25519(curve25519_sk, ed25519_skpk);
crypto_scalarmult_curve25519_base(curve25519_pk2, curve25519_sk);
if (memcmp(curve25519_pk, curve25519_pk2, sizeof curve25519_pk) != 0) {
printf("conversion failed\n");
}
}
printf("ok\n");
return 0;
}
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