Tianjie Xu
8256698023
We used to convert a pem certificate file to some intermediate plain text format; and parse that format under recovery mode. This is uncessary since the x509.pem can be directly parsed with openssl functions. Add the function to load the public key from one x509.pem file and corresponding unit tests. And we will add more cls to extract the pem files from otacert.zip later. Bug: 116655889 Test: verify package with 5 supported certficate versions Change-Id: Ibc6c696c534567f005db75143cc4ef8d4bdea6a0
83 lines
2.5 KiB
C++
83 lines
2.5 KiB
C++
/*
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* Copyright (C) 2008 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#ifndef _RECOVERY_VERIFIER_H
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#define _RECOVERY_VERIFIER_H
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#include <stdint.h>
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#include <functional>
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#include <memory>
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#include <vector>
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#include <openssl/ec_key.h>
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#include <openssl/rsa.h>
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#include <openssl/sha.h>
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struct RSADeleter {
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void operator()(RSA* rsa) const {
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RSA_free(rsa);
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}
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};
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struct ECKEYDeleter {
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void operator()(EC_KEY* ec_key) const {
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EC_KEY_free(ec_key);
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}
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};
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struct Certificate {
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typedef enum {
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KEY_TYPE_RSA,
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KEY_TYPE_EC,
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} KeyType;
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Certificate(int hash_len_,
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KeyType key_type_,
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std::unique_ptr<RSA, RSADeleter>&& rsa_,
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std::unique_ptr<EC_KEY, ECKEYDeleter>&& ec_)
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: hash_len(hash_len_),
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key_type(key_type_),
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rsa(std::move(rsa_)),
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ec(std::move(ec_)) {}
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// SHA_DIGEST_LENGTH (SHA-1) or SHA256_DIGEST_LENGTH (SHA-256)
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int hash_len;
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KeyType key_type;
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std::unique_ptr<RSA, RSADeleter> rsa;
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std::unique_ptr<EC_KEY, ECKEYDeleter> ec;
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};
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/*
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* 'addr' and 'length' define an update package file that has been loaded (or mmap'ed, or
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* whatever) into memory. Verifies that the file is signed and the signature matches one of the
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* given keys. It optionally accepts a callback function for posting the progress to. Returns one
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* of the constants of VERIFY_SUCCESS and VERIFY_FAILURE.
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*/
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int verify_file(const unsigned char* addr, size_t length, const std::vector<Certificate>& keys,
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const std::function<void(float)>& set_progress = nullptr);
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bool load_keys(const char* filename, std::vector<Certificate>& certs);
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// Parses a PEM-encoded x509 certificate from the given buffer and saves it into |cert|. Returns
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// false if there is a parsing failure or the signature's encryption algorithm is not supported.
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bool LoadCertificateFromBuffer(const std::vector<uint8_t>& pem_content, Certificate* cert);
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#define VERIFY_SUCCESS 0
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#define VERIFY_FAILURE 1
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#endif /* _RECOVERY_VERIFIER_H */
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