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| 1 // Copyright (c) 2010 The Chromium OS Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. |
| 4 |
| 5 #ifndef CHROMEOS_PLATFORM_UPDATE_ENGINE_PAYLOAD_SIGNER_H__ |
| 6 #define CHROMEOS_PLATFORM_UPDATE_ENGINE_PAYLOAD_SIGNER_H__ |
| 7 |
| 8 #include <string> |
| 9 #include <vector> |
| 10 #include "base/basictypes.h" |
| 11 |
| 12 // This function signs a payload with the OS vendor's private key. |
| 13 // It takes an update up to the signature blob and returns the signature |
| 14 // blob, which should be appended. See update_metadata.proto for more info. |
| 15 |
| 16 namespace chromeos_update_engine { |
| 17 |
| 18 extern const uint32_t kSignatureMessageVersion; |
| 19 |
| 20 class PayloadSigner { |
| 21 public: |
| 22 static bool SignPayload(const std::string& unsigned_payload_path, |
| 23 const std::string& private_key_path, |
| 24 std::vector<char>* out_signature_blob); |
| 25 |
| 26 // Returns the length of out_signature_blob that will result in a call |
| 27 // to SignPayload with a given private key. Returns true on success. |
| 28 static bool SignatureBlobLength(const std::string& private_key_path, |
| 29 uint64_t* out_length); |
| 30 |
| 31 private: |
| 32 // This should never be constructed |
| 33 DISALLOW_IMPLICIT_CONSTRUCTORS(PayloadSigner); |
| 34 }; |
| 35 |
| 36 } // namespace chromeos_update_engine |
| 37 |
| 38 #endif // CHROMEOS_PLATFORM_UPDATE_ENGINE_PAYLOAD_SIGNER_H__ |
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