1 /*
2 * Copyright (C) 2008 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 */
17 #ifndef _RECOVERY_VERIFIER_H
18 #define _RECOVERY_VERIFIER_H
20 #include <functional>
21 #include <memory>
22 #include <vector>
24 #include <openssl/ec_key.h>
25 #include <openssl/rsa.h>
26 #include <openssl/sha.h>
28 struct RSADeleter {
29 void operator()(RSA* rsa) const {
30 RSA_free(rsa);
31 }
32 };
34 struct ECKEYDeleter {
35 void operator()(EC_KEY* ec_key) const {
36 EC_KEY_free(ec_key);
37 }
38 };
40 struct Certificate {
41 typedef enum {
42 KEY_TYPE_RSA,
43 KEY_TYPE_EC,
44 } KeyType;
46 Certificate(int hash_len_,
47 KeyType key_type_,
48 std::unique_ptr<RSA, RSADeleter>&& rsa_,
49 std::unique_ptr<EC_KEY, ECKEYDeleter>&& ec_)
50 : hash_len(hash_len_),
51 key_type(key_type_),
52 rsa(std::move(rsa_)),
53 ec(std::move(ec_)) {}
55 // SHA_DIGEST_LENGTH (SHA-1) or SHA256_DIGEST_LENGTH (SHA-256)
56 int hash_len;
57 KeyType key_type;
58 std::unique_ptr<RSA, RSADeleter> rsa;
59 std::unique_ptr<EC_KEY, ECKEYDeleter> ec;
60 };
62 /*
63 * 'addr' and 'length' define an update package file that has been loaded (or mmap'ed, or
64 * whatever) into memory. Verifies that the file is signed and the signature matches one of the
65 * given keys. It optionally accepts a callback function for posting the progress to. Returns one
66 * of the constants of VERIFY_SUCCESS and VERIFY_FAILURE.
67 */
68 int verify_file(const unsigned char* addr, size_t length, const std::vector<Certificate>& keys,
69 const std::function<void(float)>& set_progress = nullptr);
71 bool load_keys(const char* filename, std::vector<Certificate>& certs);
73 #define VERIFY_SUCCESS 0
74 #define VERIFY_FAILURE 1
76 #endif /* _RECOVERY_VERIFIER_H */