RSA *RSA_public_key_from_bytes(const uint8_t *in, size_t in_len) { CBS cbs; CBS_init(&cbs, in, in_len); RSA *ret = RSA_parse_public_key(&cbs); if (ret == NULL || CBS_len(&cbs) != 0) { OPENSSL_PUT_ERROR(RSA, RSA_R_BAD_ENCODING); RSA_free(ret); return NULL; } return ret; }
RSA *d2i_RSAPublicKey(RSA **out, const uint8_t **inp, long len) { if (len < 0) { return NULL; } CBS cbs; CBS_init(&cbs, *inp, (size_t)len); RSA *ret = RSA_parse_public_key(&cbs); if (ret == NULL) { return NULL; } if (out != NULL) { RSA_free(*out); *out = ret; } *inp = CBS_data(&cbs); return ret; }
static int rsa_pub_decode(EVP_PKEY *out, CBS *params, CBS *key) { // See RFC 3279, section 2.3.1. // The parameters must be NULL. CBS null; if (!CBS_get_asn1(params, &null, CBS_ASN1_NULL) || CBS_len(&null) != 0 || CBS_len(params) != 0) { OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); return 0; } RSA *rsa = RSA_parse_public_key(key); if (rsa == NULL || CBS_len(key) != 0) { OPENSSL_PUT_ERROR(EVP, EVP_R_DECODE_ERROR); RSA_free(rsa); return 0; } EVP_PKEY_assign_RSA(out, rsa); return 1; }