Crypto++
dh2.h
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1 #ifndef CRYPTOPP_DH2_H
2 #define CRYPTOPP_DH2_H
3 
4 /** \file
5 */
6 
7 #include "cryptlib.h"
8 
9 NAMESPACE_BEGIN(CryptoPP)
10 
11 /// <a href="http://www.weidai.com/scan-mirror/ka.html#DH2">Unified Diffie-Hellman</a>
13 {
14 public:
16  : d1(domain), d2(domain) {}
17  DH2(SimpleKeyAgreementDomain &staticDomain, SimpleKeyAgreementDomain &ephemeralDomain)
18  : d1(staticDomain), d2(ephemeralDomain) {}
19 
20  CryptoParameters & AccessCryptoParameters() {return d1.AccessCryptoParameters();}
21 
22  unsigned int AgreedValueLength() const
23  {return d1.AgreedValueLength() + d2.AgreedValueLength();}
24 
25  unsigned int StaticPrivateKeyLength() const
26  {return d1.PrivateKeyLength();}
27  unsigned int StaticPublicKeyLength() const
28  {return d1.PublicKeyLength();}
29  void GenerateStaticPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
30  {d1.GeneratePrivateKey(rng, privateKey);}
31  void GenerateStaticPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
32  {d1.GeneratePublicKey(rng, privateKey, publicKey);}
33  void GenerateStaticKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
34  {d1.GenerateKeyPair(rng, privateKey, publicKey);}
35 
36  unsigned int EphemeralPrivateKeyLength() const
37  {return d2.PrivateKeyLength();}
38  unsigned int EphemeralPublicKeyLength() const
39  {return d2.PublicKeyLength();}
40  void GenerateEphemeralPrivateKey(RandomNumberGenerator &rng, byte *privateKey) const
41  {d2.GeneratePrivateKey(rng, privateKey);}
42  void GenerateEphemeralPublicKey(RandomNumberGenerator &rng, const byte *privateKey, byte *publicKey) const
43  {d2.GeneratePublicKey(rng, privateKey, publicKey);}
44  void GenerateEphemeralKeyPair(RandomNumberGenerator &rng, byte *privateKey, byte *publicKey) const
45  {d2.GenerateKeyPair(rng, privateKey, publicKey);}
46 
47  bool Agree(byte *agreedValue,
48  const byte *staticPrivateKey, const byte *ephemeralPrivateKey,
49  const byte *staticOtherPublicKey, const byte *ephemeralOtherPublicKey,
50  bool validateStaticOtherPublicKey=true) const;
51 
52 protected:
53  SimpleKeyAgreementDomain &d1, &d2;
54 };
55 
56 NAMESPACE_END
57 
58 #endif