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| 1 // Copyright 2015 The Chromium Authors. All rights reserved. | 1 // Copyright 2015 The Chromium Authors. All rights reserved. |
| 2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
| 3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
| 4 | 4 |
| 5 #ifndef COMPONENTS_PROXIMITY_AUTH_DEVICE_TO_DEVICE_RESPONDER_OPERATIONS_H | 5 #ifndef COMPONENTS_PROXIMITY_AUTH_DEVICE_TO_DEVICE_RESPONDER_OPERATIONS_H |
| 6 #define COMPONENTS_PROXIMITY_AUTH_DEVICE_TO_DEVICE_RESPONDER_OPERATIONS_H | 6 #define COMPONENTS_PROXIMITY_AUTH_DEVICE_TO_DEVICE_RESPONDER_OPERATIONS_H |
| 7 | 7 |
| 8 #include <string> | 8 #include <string> |
| 9 | 9 |
| 10 #include "base/callback_forward.h" | 10 #include "base/callback_forward.h" |
| 11 #include "base/macros.h" | 11 #include "base/macros.h" |
| 12 | 12 |
| 13 namespace cryptauth { |
| 14 class SecureMessageDelegate; |
| 15 } |
| 16 |
| 13 namespace proximity_auth { | 17 namespace proximity_auth { |
| 14 | 18 |
| 15 class SecureMessageDelegate; | |
| 16 | |
| 17 // Utility class containing operations in the DeviceToDevice protocol that the | 19 // Utility class containing operations in the DeviceToDevice protocol that the |
| 18 // initiator needs to perform. For Smart Lock, in which a phone unlocks a | 20 // initiator needs to perform. For Smart Lock, in which a phone unlocks a |
| 19 // laptop, the responder is the phone. Because the responder side of this | 21 // laptop, the responder is the phone. Because the responder side of this |
| 20 // protocol does not run in Chrome, this class is implemented solely for | 22 // protocol does not run in Chrome, this class is implemented solely for |
| 21 // testing purposes. | 23 // testing purposes. |
| 22 // | 24 // |
| 23 // All operations are asynchronous because we use the SecureMessageDelegate for | 25 // All operations are asynchronous because we use the SecureMessageDelegate for |
| 24 // crypto operations, whose implementation may be asynchronous. | 26 // crypto operations, whose implementation may be asynchronous. |
| 25 // | 27 // |
| 26 // In the DeviceToDevice protocol, the responder parses two messages received | 28 // In the DeviceToDevice protocol, the responder parses two messages received |
| (...skipping 27 matching lines...) Expand all Loading... |
| 54 // |persistent_symmetric_key|: The long-term symmetric key that is shared by | 56 // |persistent_symmetric_key|: The long-term symmetric key that is shared by |
| 55 // the initiator and responder. | 57 // the initiator and responder. |
| 56 // |secure_message_delegate|: Delegate for SecureMessage operations. This | 58 // |secure_message_delegate|: Delegate for SecureMessage operations. This |
| 57 // instance is not owned, and must live until after |callback| is invoked. | 59 // instance is not owned, and must live until after |callback| is invoked. |
| 58 // |callback|: Invoked upon operation completion with whether | 60 // |callback|: Invoked upon operation completion with whether |
| 59 // |responder_auth_message| is validated successfully and the initiator's | 61 // |responder_auth_message| is validated successfully and the initiator's |
| 60 // public key. | 62 // public key. |
| 61 static void ValidateHelloMessage( | 63 static void ValidateHelloMessage( |
| 62 const std::string& hello_message, | 64 const std::string& hello_message, |
| 63 const std::string& persistent_symmetric_key, | 65 const std::string& persistent_symmetric_key, |
| 64 SecureMessageDelegate* secure_message_delegate, | 66 cryptauth::SecureMessageDelegate* secure_message_delegate, |
| 65 const ValidateHelloCallback& callback); | 67 const ValidateHelloCallback& callback); |
| 66 | 68 |
| 67 // Creates the [Responder Auth] message: | 69 // Creates the [Responder Auth] message: |
| 68 // |hello_message|: The initial [Hello] message that was sent, which is used | 70 // |hello_message|: The initial [Hello] message that was sent, which is used |
| 69 // in the signature calculation. | 71 // in the signature calculation. |
| 70 // |session_public_key|: This session public key will be stored in plaintext | 72 // |session_public_key|: This session public key will be stored in plaintext |
| 71 // to be read by the initiator. | 73 // to be read by the initiator. |
| 72 // |session_private_key|: The session private key is used in conjunction with | 74 // |session_private_key|: The session private key is used in conjunction with |
| 73 // the initiator's public key to derive the session symmetric key. | 75 // the initiator's public key to derive the session symmetric key. |
| 74 // |persistent_private_key|: The long-term private key possessed by the | 76 // |persistent_private_key|: The long-term private key possessed by the |
| 75 // responder device. | 77 // responder device. |
| 76 // |persistent_symmetric_key|: The long-term symmetric key that is shared by | 78 // |persistent_symmetric_key|: The long-term symmetric key that is shared by |
| 77 // the initiator and responder. | 79 // the initiator and responder. |
| 78 // |secure_message_delegate|: Delegate for SecureMessage operations. This | 80 // |secure_message_delegate|: Delegate for SecureMessage operations. This |
| 79 // instance is not owned, and must live until after |callback| is invoked. | 81 // instance is not owned, and must live until after |callback| is invoked. |
| 80 // |callback|: Invoked upon operation completion with the serialized message | 82 // |callback|: Invoked upon operation completion with the serialized message |
| 81 // or an empty string. | 83 // or an empty string. |
| 82 static void CreateResponderAuthMessage( | 84 static void CreateResponderAuthMessage( |
| 83 const std::string& hello_message, | 85 const std::string& hello_message, |
| 84 const std::string& session_public_key, | 86 const std::string& session_public_key, |
| 85 const std::string& session_private_key, | 87 const std::string& session_private_key, |
| 86 const std::string& persistent_private_key, | 88 const std::string& persistent_private_key, |
| 87 const std::string& persistent_symmetric_key, | 89 const std::string& persistent_symmetric_key, |
| 88 SecureMessageDelegate* secure_message_delegate, | 90 cryptauth::SecureMessageDelegate* secure_message_delegate, |
| 89 const MessageCallback& callback); | 91 const MessageCallback& callback); |
| 90 | 92 |
| 91 // Validates that the [Initiator Auth] message, received from the initiator, | 93 // Validates that the [Initiator Auth] message, received from the initiator, |
| 92 // is properly signed and encrypted. | 94 // is properly signed and encrypted. |
| 93 // |initiator_auth_message|: The bytes of the [Local Auth] message to | 95 // |initiator_auth_message|: The bytes of the [Local Auth] message to |
| 94 // validate. | 96 // validate. |
| 95 // |session_symmetric_key|: The derived symmetric key used just for the | 97 // |session_symmetric_key|: The derived symmetric key used just for the |
| 96 // session. | 98 // session. |
| 97 // |persistent_symmetric_key|: The long-term symmetric key that is shared by | 99 // |persistent_symmetric_key|: The long-term symmetric key that is shared by |
| 98 // the initiator and responder. | 100 // the initiator and responder. |
| 99 // |secure_message_delegate|: Delegate for SecureMessage operations. This | 101 // |secure_message_delegate|: Delegate for SecureMessage operations. This |
| 100 // instance is not owned, and must live until after |callback| is invoked. | 102 // instance is not owned, and must live until after |callback| is invoked. |
| 101 // |callback|: Invoked upon operation completion with whether | 103 // |callback|: Invoked upon operation completion with whether |
| 102 // |responder_auth_message| is validated successfully. | 104 // |responder_auth_message| is validated successfully. |
| 103 static void ValidateInitiatorAuthMessage( | 105 static void ValidateInitiatorAuthMessage( |
| 104 const std::string& initiator_auth_message, | 106 const std::string& initiator_auth_message, |
| 105 const std::string& session_symmetric_key, | 107 const std::string& session_symmetric_key, |
| 106 const std::string& persistent_symmetric_key, | 108 const std::string& persistent_symmetric_key, |
| 107 const std::string& responder_auth_message, | 109 const std::string& responder_auth_message, |
| 108 SecureMessageDelegate* secure_message_delegate, | 110 cryptauth::SecureMessageDelegate* secure_message_delegate, |
| 109 const ValidationCallback& callback); | 111 const ValidationCallback& callback); |
| 110 | 112 |
| 111 private: | 113 private: |
| 112 DISALLOW_IMPLICIT_CONSTRUCTORS(DeviceToDeviceResponderOperations); | 114 DISALLOW_IMPLICIT_CONSTRUCTORS(DeviceToDeviceResponderOperations); |
| 113 }; | 115 }; |
| 114 | 116 |
| 115 } // proximity_auth | 117 } // proximity_auth |
| 116 | 118 |
| 117 #endif // COMPONENTS_PROXIMITY_AUTH_DEVICE_TO_DEVICE_RESPONDER_OPERATIONS_H | 119 #endif // COMPONENTS_PROXIMITY_AUTH_DEVICE_TO_DEVICE_RESPONDER_OPERATIONS_H |
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