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1 // Copyright (c) 2013 The Chromium Authors. All rights reserved. | 1 // Copyright (c) 2013 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 NET_QUIC_CRYPTO_P256_KEY_EXCHANGE_H_ | 5 #ifndef NET_QUIC_CRYPTO_P256_KEY_EXCHANGE_H_ |
6 #define NET_QUIC_CRYPTO_P256_KEY_EXCHANGE_H_ | 6 #define NET_QUIC_CRYPTO_P256_KEY_EXCHANGE_H_ |
7 | 7 |
8 #include <string> | 8 #include <string> |
9 | 9 |
10 #include "base/memory/scoped_ptr.h" | 10 #include "base/memory/scoped_ptr.h" |
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31 // New creates a new key exchange object from a private key. If | 31 // New creates a new key exchange object from a private key. If |
32 // |private_key| is invalid, nullptr is returned. | 32 // |private_key| is invalid, nullptr is returned. |
33 static P256KeyExchange* New(base::StringPiece private_key); | 33 static P256KeyExchange* New(base::StringPiece private_key); |
34 | 34 |
35 // |NewPrivateKey| returns a private key, suitable for passing to |New|. | 35 // |NewPrivateKey| returns a private key, suitable for passing to |New|. |
36 // If |NewPrivateKey| can't generate a private key, it returns an empty | 36 // If |NewPrivateKey| can't generate a private key, it returns an empty |
37 // string. | 37 // string. |
38 static std::string NewPrivateKey(); | 38 static std::string NewPrivateKey(); |
39 | 39 |
40 // KeyExchange interface. | 40 // KeyExchange interface. |
41 virtual KeyExchange* NewKeyPair(QuicRandom* rand) const OVERRIDE; | 41 virtual KeyExchange* NewKeyPair(QuicRandom* rand) const override; |
42 virtual bool CalculateSharedKey(const base::StringPiece& peer_public_value, | 42 virtual bool CalculateSharedKey(const base::StringPiece& peer_public_value, |
43 std::string* shared_key) const OVERRIDE; | 43 std::string* shared_key) const override; |
44 virtual base::StringPiece public_value() const OVERRIDE; | 44 virtual base::StringPiece public_value() const override; |
45 virtual QuicTag tag() const OVERRIDE; | 45 virtual QuicTag tag() const override; |
46 | 46 |
47 private: | 47 private: |
48 enum { | 48 enum { |
49 // A P-256 field element consists of 32 bytes. | 49 // A P-256 field element consists of 32 bytes. |
50 kP256FieldBytes = 32, | 50 kP256FieldBytes = 32, |
51 // A P-256 point in uncompressed form consists of 0x04 (to denote | 51 // A P-256 point in uncompressed form consists of 0x04 (to denote |
52 // that the point is uncompressed) followed by two, 32-byte field | 52 // that the point is uncompressed) followed by two, 32-byte field |
53 // elements. | 53 // elements. |
54 kUncompressedP256PointBytes = 1 + 2 * kP256FieldBytes, | 54 kUncompressedP256PointBytes = 1 + 2 * kP256FieldBytes, |
55 // The first byte in an uncompressed P-256 point. | 55 // The first byte in an uncompressed P-256 point. |
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70 scoped_ptr<crypto::ECPrivateKey> key_pair_; | 70 scoped_ptr<crypto::ECPrivateKey> key_pair_; |
71 #endif | 71 #endif |
72 // The public key stored as an uncompressed P-256 point. | 72 // The public key stored as an uncompressed P-256 point. |
73 uint8 public_key_[kUncompressedP256PointBytes]; | 73 uint8 public_key_[kUncompressedP256PointBytes]; |
74 | 74 |
75 DISALLOW_COPY_AND_ASSIGN(P256KeyExchange); | 75 DISALLOW_COPY_AND_ASSIGN(P256KeyExchange); |
76 }; | 76 }; |
77 | 77 |
78 } // namespace net | 78 } // namespace net |
79 #endif // NET_QUIC_CRYPTO_P256_KEY_EXCHANGE_H_ | 79 #endif // NET_QUIC_CRYPTO_P256_KEY_EXCHANGE_H_ |
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