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The Android Open Source Projectc24a8e62009-03-03 19:28:42 -08001/*
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 */
16
17#ifndef _RECOVERY_VERIFIER_H
18#define _RECOVERY_VERIFIER_H
19
Tianjie Xu82566982018-10-10 15:44:17 -070020#include <stdint.h>
21
Tao Bao5e535012017-03-16 17:37:38 -070022#include <functional>
Tao Bao71e3e092016-02-02 14:02:27 -080023#include <memory>
24#include <vector>
25
Mattias Nissler452df6d2016-04-04 16:17:01 +020026#include <openssl/ec_key.h>
27#include <openssl/rsa.h>
28#include <openssl/sha.h>
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080029
Mattias Nissler452df6d2016-04-04 16:17:01 +020030struct RSADeleter {
Mikhail Lappob49767c2017-03-23 21:44:26 +010031 void operator()(RSA* rsa) const {
Mattias Nissler452df6d2016-04-04 16:17:01 +020032 RSA_free(rsa);
33 }
34};
35
36struct ECKEYDeleter {
Mikhail Lappob49767c2017-03-23 21:44:26 +010037 void operator()(EC_KEY* ec_key) const {
Mattias Nissler452df6d2016-04-04 16:17:01 +020038 EC_KEY_free(ec_key);
39 }
40};
Kenny Root7a4adb52013-10-09 10:14:35 -070041
Tao Bao71e3e092016-02-02 14:02:27 -080042struct Certificate {
Kenny Root7a4adb52013-10-09 10:14:35 -070043 typedef enum {
Mattias Nissler452df6d2016-04-04 16:17:01 +020044 KEY_TYPE_RSA,
45 KEY_TYPE_EC,
Kenny Root7a4adb52013-10-09 10:14:35 -070046 } KeyType;
47
Mattias Nissler452df6d2016-04-04 16:17:01 +020048 Certificate(int hash_len_,
49 KeyType key_type_,
50 std::unique_ptr<RSA, RSADeleter>&& rsa_,
51 std::unique_ptr<EC_KEY, ECKEYDeleter>&& ec_)
52 : hash_len(hash_len_),
53 key_type(key_type_),
54 rsa(std::move(rsa_)),
55 ec(std::move(ec_)) {}
Tao Bao71e3e092016-02-02 14:02:27 -080056
Mattias Nissler452df6d2016-04-04 16:17:01 +020057 // SHA_DIGEST_LENGTH (SHA-1) or SHA256_DIGEST_LENGTH (SHA-256)
58 int hash_len;
Kenny Root7a4adb52013-10-09 10:14:35 -070059 KeyType key_type;
Mattias Nissler452df6d2016-04-04 16:17:01 +020060 std::unique_ptr<RSA, RSADeleter> rsa;
61 std::unique_ptr<EC_KEY, ECKEYDeleter> ec;
Tao Bao71e3e092016-02-02 14:02:27 -080062};
Doug Zongker30362a62013-04-10 11:32:17 -070063
Tao Bao5e535012017-03-16 17:37:38 -070064/*
65 * 'addr' and 'length' define an update package file that has been loaded (or mmap'ed, or
66 * whatever) into memory. Verifies that the file is signed and the signature matches one of the
67 * given keys. It optionally accepts a callback function for posting the progress to. Returns one
68 * of the constants of VERIFY_SUCCESS and VERIFY_FAILURE.
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080069 */
Tao Bao76fdb242017-03-20 17:09:13 -070070int verify_file(const unsigned char* addr, size_t length, const std::vector<Certificate>& keys,
Tao Bao5e535012017-03-16 17:37:38 -070071 const std::function<void(float)>& set_progress = nullptr);
Doug Zongker60151a22009-08-12 18:30:03 -070072
Tao Bao71e3e092016-02-02 14:02:27 -080073bool load_keys(const char* filename, std::vector<Certificate>& certs);
Doug Zongker6c249f72012-11-02 15:04:05 -070074
Tianjie Xu82566982018-10-10 15:44:17 -070075// Parses a PEM-encoded x509 certificate from the given buffer and saves it into |cert|. Returns
76// false if there is a parsing failure or the signature's encryption algorithm is not supported.
77bool LoadCertificateFromBuffer(const std::vector<uint8_t>& pem_content, Certificate* cert);
78
Doug Zongker60151a22009-08-12 18:30:03 -070079#define VERIFY_SUCCESS 0
80#define VERIFY_FAILURE 1
The Android Open Source Projectc24a8e62009-03-03 19:28:42 -080081
82#endif /* _RECOVERY_VERIFIER_H */