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 <keymaster/km_openssl/openssl_utils.h>
23 
24 #include "asymmetric_key.h"
25 
26 namespace keymaster {
27 
28 class RsaKey : public AsymmetricKey {
29   public:
RsaKey(AuthorizationSet hw_enforced,AuthorizationSet sw_enforced,const KeyFactory * factory)30     RsaKey(AuthorizationSet hw_enforced, AuthorizationSet sw_enforced, const KeyFactory* factory)
31         : AsymmetricKey(move(hw_enforced), move(sw_enforced), factory) {}
RsaKey(AuthorizationSet hw_enforced,AuthorizationSet sw_enforced,const KeyFactory * factory,RSA_Ptr rsa_key)32     RsaKey(AuthorizationSet hw_enforced, AuthorizationSet sw_enforced, const KeyFactory* factory,
33            RSA_Ptr rsa_key)
34         : AsymmetricKey(move(hw_enforced), move(sw_enforced), factory), rsa_key_(move(rsa_key)) {}
35 
36     bool InternalToEvp(EVP_PKEY* pkey) const override;
37     bool EvpToInternal(const EVP_PKEY* pkey) override;
38 
39     bool SupportedMode(keymaster_purpose_t purpose, keymaster_padding_t padding);
40     bool SupportedMode(keymaster_purpose_t purpose, keymaster_digest_t digest);
41 
key()42     RSA* key() const { return rsa_key_.get(); }
43 
44   protected:
RsaKey(RSA * rsa,AuthorizationSet hw_enforced,AuthorizationSet sw_enforced,const KeyFactory * key_factory)45     RsaKey(RSA* rsa, AuthorizationSet hw_enforced, AuthorizationSet sw_enforced,
46            const KeyFactory* key_factory)
47         : AsymmetricKey(move(hw_enforced), move(sw_enforced), key_factory), rsa_key_(rsa) {}
48 
49   private:
50     RSA_Ptr rsa_key_;
51 };
52 
53 }  // namespace keymaster
54 
55 #endif  // SYSTEM_KEYMASTER_RSA_KEY_H_
56