int i2d_RSAPrivateKey(const RSA *in, uint8_t **outp) {
CBB cbb;
if (!CBB_init(&cbb, 0) ||
!RSA_marshal_private_key(&cbb, in)) {
CBB_cleanup(&cbb);
return -1;
}
return CBB_finish_i2d(&cbb, outp);
}
int RSA_private_key_to_bytes(uint8_t **out_bytes, size_t *out_len,
const RSA *rsa) {
CBB cbb;
CBB_zero(&cbb);
if (!CBB_init(&cbb, 0) ||
!RSA_marshal_private_key(&cbb, rsa) ||
!CBB_finish(&cbb, out_bytes, out_len)) {
OPENSSL_PUT_ERROR(RSA, RSA_R_ENCODE_ERROR);
CBB_cleanup(&cbb);
return 0;
}
return 1;
}
static int rsa_priv_encode(CBB *out, const EVP_PKEY *key) {
CBB pkcs8, algorithm, oid, null, private_key;
if (!CBB_add_asn1(out, &pkcs8, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1_uint64(&pkcs8, 0 /* version */) ||
!CBB_add_asn1(&pkcs8, &algorithm, CBS_ASN1_SEQUENCE) ||
!CBB_add_asn1(&algorithm, &oid, CBS_ASN1_OBJECT) ||
!CBB_add_bytes(&oid, rsa_asn1_meth.oid, rsa_asn1_meth.oid_len) ||
!CBB_add_asn1(&algorithm, &null, CBS_ASN1_NULL) ||
!CBB_add_asn1(&pkcs8, &private_key, CBS_ASN1_OCTETSTRING) ||
!RSA_marshal_private_key(&private_key, key->pkey.rsa) ||
!CBB_flush(out)) {
OPENSSL_PUT_ERROR(EVP, EVP_R_ENCODE_ERROR);
return 0;
}
return 1;
}
