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      1 //
      2 // Copyright (C) 2011 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 SHILL_CRYPTO_INTERFACE_H_
     18 #define SHILL_CRYPTO_INTERFACE_H_
     19 
     20 #include <string>
     21 
     22 namespace shill {
     23 
     24 // An interface to an encryption/decryption module.
     25 class CryptoInterface {
     26  public:
     27   virtual ~CryptoInterface() {}
     28 
     29   // Returns a unique identifier for this crypto module.
     30   virtual std::string GetID() = 0;
     31 
     32   // Encrypts |plaintext| into |ciphertext|. Returns true on success.
     33   virtual bool Encrypt(const std::string& plaintext,
     34                        std::string* ciphertext) = 0;
     35 
     36   // Decrypts |ciphertext| into |plaintext|. Returns true on success.
     37   virtual bool Decrypt(const std::string& ciphertext,
     38                        std::string* plaintext) = 0;
     39 };
     40 
     41 }  // namespace shill
     42 
     43 #endif  // SHILL_CRYPTO_INTERFACE_H_
     44