int crypto_ed25519_export_public_key(const ed25519_key *key, byte *buffer, size_t *size) {
if (size == NULL) {
return -1;
}
if (*size < ED25519_PUB_KEY_SIZE) {
*size = ED25519_PUB_KEY_SIZE;
return -2;
}
word32 len = *size;
int r = wc_ed25519_export_public((ed25519_key *)key, buffer, &len);
*size = len;
return r;
}
/* export full private key and public key
return 0 on success
*/
int wc_ed25519_export_key(ed25519_key* key,
byte* priv, word32 *privSz,
byte* pub, word32 *pubSz)
{
int ret;
/* export 'full' private part */
ret = wc_ed25519_export_private(key, priv, privSz);
if (ret != 0)
return ret;
/* export public part */
ret = wc_ed25519_export_public(key, pub, pubSz);
return ret;
}
}
bool uc_import_ecc_pub_key_encoded(uc_ed25519_key *key, uc_ed25519_pub_pkcs8 *pkcs8) {
return uc_import_ecc_pub_key(key, (const unsigned char *) &(pkcs8->key), sizeof(pkcs8->key));
}
bool uc_ecc_export_pub(ed25519_key *key, uc_ed25519_pub_pkcs8 *pkcs8) {
// copy the ASN.1 (PKCS#8) header into the encoded public key array
memcpy(pkcs8->header, (const unsigned char[]) {
0x30, 13 + ED25519_PUB_KEY_SIZE, 0x30, 0x08, 0x06, 0x03, 0x2b, 0x65, 0x64, 0x0a, 0x01, 0x01,
0x03, 1 + ED25519_PUB_KEY_SIZE, 0x00
}, 15);
word32 len = ED25519_PUB_KEY_SIZE;
const int status = wc_ed25519_export_public(key, pkcs8->key, &len);
if (status < 0 || len != ED25519_PUB_KEY_SIZE) {
UCERROR("ecc pub export", status);
return false;
}
UCDUMP("ECCPUB", (const unsigned char *) pkcs8, sizeof(uc_ed25519_pub_pkcs8));
return true;
}
char *uc_ecc_export_pub_encoded(ed25519_key *key) {
uc_ed25519_pub_pkcs8 pkcs8;
uc_ecc_export_pub(key, &pkcs8);
return uc_base64_encode((const unsigned char *) &pkcs8, sizeof(pkcs8));
}