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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/>.
*
*/
#include "qemu/osdep.h"
#include "der.h"
#include "rsakey.h"
void qcrypto_akcipher_rsakey_free(QCryptoAkCipherRSAKey *rsa_key)
{
if (!rsa_key) {
return;
}
g_free(rsa_key->n.data);
g_free(rsa_key->e.data);
g_free(rsa_key->d.data);
g_free(rsa_key->p.data);
g_free(rsa_key->q.data);
g_free(rsa_key->dp.data);
g_free(rsa_key->dq.data);
g_free(rsa_key->u.data);
g_free(rsa_key);
}
/**
* PKCS#8 private key info for RSA
*
* PrivateKeyInfo ::= SEQUENCE {
* version INTEGER,
* privateKeyAlgorithm PrivateKeyAlgorithmIdentifier,
* privateKey OCTET STRING,
* attributes [0] IMPLICIT Attributes OPTIONAL
* }
*/
void qcrypto_akcipher_rsakey_export_p8info(const uint8_t *key,
size_t keylen,
uint8_t **dst,
size_t *dlen)
{
QCryptoEncodeContext *ctx = qcrypto_der_encode_ctx_new();
uint8_t version = 0;
qcrypto_der_encode_seq_begin(ctx);
/* version */
qcrypto_der_encode_int(ctx, &version, sizeof(version));
/* algorithm identifier */
qcrypto_der_encode_seq_begin(ctx);
qcrypto_der_encode_oid(ctx, (uint8_t *)QCRYPTO_OID_rsaEncryption,
sizeof(QCRYPTO_OID_rsaEncryption) - 1);
qcrypto_der_encode_null(ctx);
qcrypto_der_encode_seq_end(ctx);
/* RSA private key */
qcrypto_der_encode_octet_str(ctx, key, keylen);
qcrypto_der_encode_seq_end(ctx);
*dlen = qcrypto_der_encode_ctx_buffer_len(ctx);
*dst = g_malloc(*dlen);
qcrypto_der_encode_ctx_flush_and_free(ctx, *dst);
}
#if defined(CONFIG_NETTLE) && defined(CONFIG_HOGWEED)
#include "rsakey-nettle.c.inc"
#else
#include "rsakey-builtin.c.inc"
#endif
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