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58660863ba
crypto: support export RSA private keys with PKCS#8 standard. So that users can upload this private key to linux kernel. Signed-off-by: lei he <helei.sig11@bytedance.com> Message-Id: <20221008085030.70212-4-helei.sig11@bytedance.com> Reviewed-by: Michael S. Tsirkin <mst@redhat.com> Signed-off-by: Michael S. Tsirkin <mst@redhat.com> Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
102 lines
3.1 KiB
C
102 lines
3.1 KiB
C
/*
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* QEMU Crypto RSA key parser
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*
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* Copyright (c) 2022 Bytedance
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* Author: lei he <helei.sig11@bytedance.com>
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public
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* License along with this library; if not, see <http://www.gnu.org/licenses/>.
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*
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*/
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#ifndef QCRYPTO_RSAKEY_H
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#define QCRYPTO_RSAKEY_H
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#include "qemu/host-utils.h"
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#include "crypto/akcipher.h"
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typedef struct QCryptoAkCipherRSAKey QCryptoAkCipherRSAKey;
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typedef struct QCryptoAkCipherMPI QCryptoAkCipherMPI;
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/**
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* Multiple precious integer, encoded as two' complement,
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* copied directly from DER encoded ASN.1 structures.
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*/
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struct QCryptoAkCipherMPI {
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uint8_t *data;
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size_t len;
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};
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/* See rfc2437: https://datatracker.ietf.org/doc/html/rfc2437 */
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struct QCryptoAkCipherRSAKey {
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/* The modulus */
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QCryptoAkCipherMPI n;
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/* The public exponent */
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QCryptoAkCipherMPI e;
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/* The private exponent */
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QCryptoAkCipherMPI d;
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/* The first factor */
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QCryptoAkCipherMPI p;
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/* The second factor */
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QCryptoAkCipherMPI q;
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/* The first factor's exponent */
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QCryptoAkCipherMPI dp;
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/* The second factor's exponent */
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QCryptoAkCipherMPI dq;
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/* The CRT coefficient */
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QCryptoAkCipherMPI u;
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};
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/**
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* Parse DER encoded ASN.1 RSA keys, expected ASN.1 schemas:
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* RsaPrivKey ::= SEQUENCE {
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* version INTEGER
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* n INTEGER
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* e INTEGER
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* d INTEGER
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* p INTEGER
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* q INTEGER
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* dp INTEGER
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* dq INTEGER
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* u INTEGER
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* otherPrimeInfos OtherPrimeInfos OPTIONAL
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* }
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*
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* RsaPubKey ::= SEQUENCE {
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* n INTEGER
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* e INTEGER
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* }
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*
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* Returns: On success QCryptoAkCipherRSAKey is returned, otherwise returns NULL
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*/
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QCryptoAkCipherRSAKey *qcrypto_akcipher_rsakey_parse(
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QCryptoAkCipherKeyType type,
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const uint8_t *key, size_t keylen, Error **errp);
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/**
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* qcrypto_akcipher_rsakey_export_as_p8info:
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*
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* Export RSA private key to PKCS#8 private key info.
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*/
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void qcrypto_akcipher_rsakey_export_p8info(const uint8_t *key,
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size_t keylen,
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uint8_t **dst,
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size_t *dlen);
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void qcrypto_akcipher_rsakey_free(QCryptoAkCipherRSAKey *key);
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G_DEFINE_AUTOPTR_CLEANUP_FUNC(QCryptoAkCipherRSAKey,
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qcrypto_akcipher_rsakey_free);
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#endif
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