Lei He | 4c5e512 | 2022-05-25 17:01:14 +0800 | [diff] [blame] | 1 | /* |
| 2 | * QEMU Crypto RSA key parser |
| 3 | * |
| 4 | * Copyright (c) 2022 Bytedance |
| 5 | * Author: lei he <helei.sig11@bytedance.com> |
| 6 | * |
| 7 | * This library is free software; you can redistribute it and/or |
| 8 | * modify it under the terms of the GNU Lesser General Public |
| 9 | * License as published by the Free Software Foundation; either |
| 10 | * version 2.1 of the License, or (at your option) any later version. |
| 11 | * |
| 12 | * This library is distributed in the hope that it will be useful, |
| 13 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 14 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
| 15 | * Lesser General Public License for more details. |
| 16 | * |
| 17 | * You should have received a copy of the GNU Lesser General Public |
| 18 | * License along with this library; if not, see <http://www.gnu.org/licenses/>. |
| 19 | * |
| 20 | */ |
| 21 | |
Lei He | 5866086 | 2022-10-08 16:50:29 +0800 | [diff] [blame] | 22 | #include "qemu/osdep.h" |
| 23 | #include "der.h" |
Lei He | 4c5e512 | 2022-05-25 17:01:14 +0800 | [diff] [blame] | 24 | #include "rsakey.h" |
| 25 | |
| 26 | void qcrypto_akcipher_rsakey_free(QCryptoAkCipherRSAKey *rsa_key) |
| 27 | { |
| 28 | if (!rsa_key) { |
| 29 | return; |
| 30 | } |
| 31 | g_free(rsa_key->n.data); |
| 32 | g_free(rsa_key->e.data); |
| 33 | g_free(rsa_key->d.data); |
| 34 | g_free(rsa_key->p.data); |
| 35 | g_free(rsa_key->q.data); |
| 36 | g_free(rsa_key->dp.data); |
| 37 | g_free(rsa_key->dq.data); |
| 38 | g_free(rsa_key->u.data); |
| 39 | g_free(rsa_key); |
| 40 | } |
| 41 | |
Lei He | 5866086 | 2022-10-08 16:50:29 +0800 | [diff] [blame] | 42 | /** |
| 43 | * PKCS#8 private key info for RSA |
| 44 | * |
| 45 | * PrivateKeyInfo ::= SEQUENCE { |
| 46 | * version INTEGER, |
| 47 | * privateKeyAlgorithm PrivateKeyAlgorithmIdentifier, |
| 48 | * privateKey OCTET STRING, |
| 49 | * attributes [0] IMPLICIT Attributes OPTIONAL |
| 50 | * } |
| 51 | */ |
| 52 | void qcrypto_akcipher_rsakey_export_p8info(const uint8_t *key, |
| 53 | size_t keylen, |
| 54 | uint8_t **dst, |
| 55 | size_t *dlen) |
| 56 | { |
| 57 | QCryptoEncodeContext *ctx = qcrypto_der_encode_ctx_new(); |
| 58 | uint8_t version = 0; |
| 59 | |
| 60 | qcrypto_der_encode_seq_begin(ctx); |
| 61 | |
| 62 | /* version */ |
| 63 | qcrypto_der_encode_int(ctx, &version, sizeof(version)); |
| 64 | |
| 65 | /* algorithm identifier */ |
| 66 | qcrypto_der_encode_seq_begin(ctx); |
| 67 | qcrypto_der_encode_oid(ctx, (uint8_t *)QCRYPTO_OID_rsaEncryption, |
| 68 | sizeof(QCRYPTO_OID_rsaEncryption) - 1); |
| 69 | qcrypto_der_encode_null(ctx); |
| 70 | qcrypto_der_encode_seq_end(ctx); |
| 71 | |
| 72 | /* RSA private key */ |
| 73 | qcrypto_der_encode_octet_str(ctx, key, keylen); |
| 74 | |
| 75 | qcrypto_der_encode_seq_end(ctx); |
| 76 | |
| 77 | *dlen = qcrypto_der_encode_ctx_buffer_len(ctx); |
| 78 | *dst = g_malloc(*dlen); |
| 79 | qcrypto_der_encode_ctx_flush_and_free(ctx, *dst); |
| 80 | } |
| 81 | |
Lei He | 4c5e512 | 2022-05-25 17:01:14 +0800 | [diff] [blame] | 82 | #if defined(CONFIG_NETTLE) && defined(CONFIG_HOGWEED) |
| 83 | #include "rsakey-nettle.c.inc" |
| 84 | #else |
| 85 | #include "rsakey-builtin.c.inc" |
| 86 | #endif |