1/*
2 * Copyright 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef SYSTEM_KEYMASTER_RSA_KEY_H_
18#define SYSTEM_KEYMASTER_RSA_KEY_H_
19
20#include <openssl/rsa.h>
21
22#include "asymmetric_key.h"
23
24namespace keymaster {
25
26class RsaKey : public AsymmetricKey {
27  public:
28    RsaKey(const AuthorizationSet& hw_enforced, const AuthorizationSet& sw_enforced,
29           keymaster_error_t* error)
30        : AsymmetricKey(hw_enforced, sw_enforced, error) {}
31
32    bool InternalToEvp(EVP_PKEY* pkey) const override;
33    bool EvpToInternal(const EVP_PKEY* pkey) override;
34
35    bool SupportedMode(keymaster_purpose_t purpose, keymaster_padding_t padding);
36    bool SupportedMode(keymaster_purpose_t purpose, keymaster_digest_t digest);
37
38    struct RSA_Delete {
39        void operator()(RSA* p) { RSA_free(p); }
40    };
41
42    RSA* key() const { return rsa_key_.get(); }
43
44  protected:
45    RsaKey(RSA* rsa, const AuthorizationSet& hw_enforced, const AuthorizationSet& sw_enforced,
46           keymaster_error_t* error)
47        : AsymmetricKey(hw_enforced, sw_enforced, error), rsa_key_(rsa) {}
48
49  private:
50    UniquePtr<RSA, RSA_Delete> rsa_key_;
51};
52
53}  // namespace keymaster
54
55#endif  // SYSTEM_KEYMASTER_RSA_KEY_H_
56