chrome/common/extensions/api/networking_private/networking_private_crypto.h

   1 // Copyright 2014 The Chromium 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 CHROME_COMMON_EXTENSIONS_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_CRYPTO_H_
   6 #define CHROME_COMMON_EXTENSIONS_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_CRYPTO_H_
   7
   8 #include <string>
   9 #include <vector>
  10 #include "base/basictypes.h"
  11
  12 // Implementation of Crypto support for networking private API.
  13 // Based on chromeos_public//src/platform/shill/shims/crypto_util.cc
  14 class NetworkingPrivateCrypto {
  15  public:
  16   NetworkingPrivateCrypto();
  17   ~NetworkingPrivateCrypto();
  18
  19   // Verify that credentials described by |certificate| and |signed_data| are
  20   // valid.
  21   //
  22   // 1) The MAC address listed in the certificate matches |connected_mac|.
  23   // 2) The certificate is a valid PEM encoded certificate signed by trusted CA.
  24   // 3) |signature| is a valid signature for |data|, using the public key in
  25   // |certificate|
  26   bool VerifyCredentials(const std::string& certificate,
  27                          const std::string& signature,
  28                          const std::string& data,
  29                          const std::string& connected_mac);
  30
  31   // Encrypt |data| with |public_key|. |public_key| is a DER-encoded
  32   // RSAPublicKey. |data| is some string of bytes that is smaller than the
  33   // maximum length permissible for PKCS#1 v1.5 with a key of |public_key| size.
  34   //
  35   // Returns true on success, storing the encrypted result in
  36   // |encrypted_output|.
  37   bool EncryptByteString(const std::vector<uint8>& public_key,
  38                          const std::string& data,
  39                          std::vector<uint8>* encrypted_output);
  40
  41  private:
  42   friend class NetworkingPrivateCryptoTest;
  43
  44   // Decrypt |encrypted_data| with |private_key_pem|. |private_key_pem| is the
  45   // PKCS8 PEM-encoded private key. |encrypted_data| is data encrypted with
  46   // EncryptByteString. Used in NetworkingPrivateCryptoTest::EncryptString test.
  47   //
  48   // Returns true on success, storing the decrypted result in
  49   // |decrypted_output|.
  50   bool DecryptByteString(const std::string& private_key_pem,
  51                          const std::vector<uint8>& encrypted_data,
  52                          std::string* decrypted_output);
  53
  54   DISALLOW_COPY_AND_ASSIGN(NetworkingPrivateCrypto);
  55 };
  56
  57 #endif  // CHROME_COMMON_EXTENSIONS_API_NETWORKING_PRIVATE_NETWORKING_PRIVATE_CRYPTO_H_