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/*
* QEMU Crypto RSA key parser
*
* Copyright (c) 2022 Bytedance
* Author: lei he <helei.sig11@bytedance.com>
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, see <http://www.gnu.org/licenses/>.
*
*/
#ifndef QCRYPTO_RSAKEY_H
#define QCRYPTO_RSAKEY_H
#include "qemu/host-utils.h"
#include "crypto/akcipher.h"
typedef struct QCryptoAkCipherRSAKey QCryptoAkCipherRSAKey;
typedef struct QCryptoAkCipherMPI QCryptoAkCipherMPI;
/**
* Multiple precious integer, encoded as two' complement,
* copied directly from DER encoded ASN.1 structures.
*/
struct QCryptoAkCipherMPI {
uint8_t *data;
size_t len;
};
/* See rfc2437: https://datatracker.ietf.org/doc/html/rfc2437 */
struct QCryptoAkCipherRSAKey {
/* The modulus */
QCryptoAkCipherMPI n;
/* The public exponent */
QCryptoAkCipherMPI e;
/* The private exponent */
QCryptoAkCipherMPI d;
/* The first factor */
QCryptoAkCipherMPI p;
/* The second factor */
QCryptoAkCipherMPI q;
/* The first factor's exponent */
QCryptoAkCipherMPI dp;
/* The second factor's exponent */
QCryptoAkCipherMPI dq;
/* The CRT coefficient */
QCryptoAkCipherMPI u;
};
/**
* Parse DER encoded ASN.1 RSA keys, expected ASN.1 schemas:
* RsaPrivKey ::= SEQUENCE {
* version INTEGER
* n INTEGER
* e INTEGER
* d INTEGER
* p INTEGER
* q INTEGER
* dp INTEGER
* dq INTEGER
* u INTEGER
* otherPrimeInfos OtherPrimeInfos OPTIONAL
* }
*
* RsaPubKey ::= SEQUENCE {
* n INTEGER
* e INTEGER
* }
*
* Returns: On success QCryptoAkCipherRSAKey is returned, otherwise returns NULL
*/
QCryptoAkCipherRSAKey *qcrypto_akcipher_rsakey_parse(
QCryptoAkCipherKeyType type,
const uint8_t *key, size_t keylen, Error **errp);
/**
* qcrypto_akcipher_rsakey_export_as_p8info:
*
* Export RSA private key to PKCS#8 private key info.
*/
void qcrypto_akcipher_rsakey_export_p8info(const uint8_t *key,
size_t keylen,
uint8_t **dst,
size_t *dlen);
void qcrypto_akcipher_rsakey_free(QCryptoAkCipherRSAKey *key);
G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoAkCipherRSAKey,
qcrypto_akcipher_rsakey_free);
#endif
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