Crypto++  8.2
Free C++ class library of cryptographic schemes
skipjack.h
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1 // skipjack.h - originally written and placed in the public domain by Wei Dai
2 
3 /// \file skipjack.h
4 /// \brief Classes for the SKIPJACK block cipher
5 /// \details The Crypto++ implementation conforms to SKIPJACK and KEA
6 /// Algorithm Specifications published by NIST in May 1998. The library passes
7 /// known answer tests available in NIST SP800-17, Table 6, pp. 140-42.
8 /// \sa <a href ="http://csrc.nist.gov/encryption/skipjack/skipjack.pdf">SKIPJACK
9 /// and KEA Algorithm Specifications</a> (May 1998), <a
10 /// href="http://www.cryptopp.com/wiki/SKIPJACK">SKIPJACK</a> on the Crypto++ wiki
11 
12 #ifndef CRYPTOPP_SKIPJACK_H
13 #define CRYPTOPP_SKIPJACK_H
14 
15 #include "seckey.h"
16 #include "secblock.h"
17 
18 NAMESPACE_BEGIN(CryptoPP)
19 
20 /// \brief SKIPJACK block cipher information
21 struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
22 {
23  CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "SKIPJACK";}
24 };
25 
26 /// \brief SKIPJACK block cipher
27 /// \details The Crypto++ implementation conforms to SKIPJACK and KEA
28 /// Algorithm Specifications published by NIST in May 1998. The library passes
29 /// known answer tests available in NIST SP800-17, Table 6, pp. 140-42.
30 /// \sa <a href ="http://csrc.nist.gov/encryption/skipjack/skipjack.pdf">SKIPJACK
31 /// and KEA Algorithm Specifications</a> (May 1998), <a
32 /// href="http://www.cryptopp.com/wiki/SKIPJACK">SKIPJACK</a> on the Crypto++ wiki
34 {
35  /// \brief SKIPJACK block cipher default operation
36  class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SKIPJACK_Info>
37  {
38  public:
39  void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
40  unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word16>();}
41 
42  protected:
43  static const byte fTable[256];
44 
46  };
47 
48  /// \brief SKIPJACK block cipher encryption operation
49  class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base
50  {
51  public:
52  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
53  private:
54  static const byte Se[256];
55  static const word32 Te[4][256];
56  };
57 
58  /// \brief SKIPJACK block cipher decryption operation
59  class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base
60  {
61  public:
62  void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
63  private:
64  static const byte Sd[256];
65  static const word32 Td[4][256];
66  };
67 
68 public:
71 };
72 
75 
76 NAMESPACE_END
77 
78 #endif
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:124
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher...
Definition: seckey.h:398
SKIPJACK block cipher information.
Definition: skipjack.h:21
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1250
Classes and functions for secure memory allocations.
Inherited by algorithms with fixed block size.
Definition: seckey.h:40
Classes and functions for implementing secret key algorithms.
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:305
SKIPJACK block cipher.
Definition: skipjack.h:33
Crypto++ library namespace.
Interface for retrieving values given their names.
Definition: cryptlib.h:293