networking_private_crypto.h revision a1401311d1ab56c4ed0a474bd38c108f75cb0cd9 
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
14class 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_
58