Crypto++ 8.4 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),
10 /// <a href="http://www.cryptopp.com/wiki/SKIPJACK">SKIPJACK</a> on the
11 // Crypto++ wiki
12
13 #ifndef CRYPTOPP_SKIPJACK_H
14 #define CRYPTOPP_SKIPJACK_H
15
16 #include "seckey.h"
17 #include "secblock.h"
18
19 NAMESPACE_BEGIN(CryptoPP)
20
21 /// \brief SKIPJACK block cipher information
22 struct SKIPJACK_Info : public FixedBlockSize<8>, public FixedKeyLength<10>
23 {
24 CRYPTOPP_DLL static const char * CRYPTOPP_API StaticAlgorithmName() {return "SKIPJACK";}
25 };
26
27 /// \brief SKIPJACK block cipher
28 /// \details The Crypto++ implementation conforms to SKIPJACK and KEA
29 /// Algorithm Specifications published by NIST in May 1998. The library passes
30 /// known answer tests available in NIST SP800-17, Table 6, pp. 140-42.
31 /// \sa <a href ="http://csrc.nist.gov/encryption/skipjack/skipjack.pdf">SKIPJACK
32 /// and KEA Algorithm Specifications</a> (May 1998),
33 /// <a href="http://www.cryptopp.com/wiki/SKIPJACK">SKIPJACK</a> on the
34 /// Crypto++ wiki
35 class SKIPJACK : public SKIPJACK_Info, public BlockCipherDocumentation
36 {
37 /// \brief SKIPJACK block cipher default operation
38 class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Base : public BlockCipherImpl<SKIPJACK_Info>
39 {
40 public:
41 void UncheckedSetKey(const byte *userKey, unsigned int length, const NameValuePairs &params);
42 unsigned int OptimalDataAlignment() const {return GetAlignmentOf<word16>();}
43
44 protected:
45 static const byte fTable[256];
46
47 FixedSizeSecBlock<byte, 10*256> tab;
48 };
49
50 /// \brief SKIPJACK block cipher encryption operation
51 class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Enc : public Base
52 {
53 public:
54 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
55 private:
56 static const byte Se[256];
57 static const word32 Te[4][256];
58 };
59
60 /// \brief SKIPJACK block cipher decryption operation
61 class CRYPTOPP_DLL CRYPTOPP_NO_VTABLE Dec : public Base
62 {
63 public:
64 void ProcessAndXorBlock(const byte *inBlock, const byte *xorBlock, byte *outBlock) const;
65 private:
66 static const byte Sd[256];
67 static const word32 Td[4][256];
68 };
69
70 public:
71 typedef BlockCipherFinal<ENCRYPTION, Enc> Encryption;
72 typedef BlockCipherFinal<DECRYPTION, Dec> Decryption;
73 };
74
75 typedef SKIPJACK::Encryption SKIPJACKEncryption;
76 typedef SKIPJACK::Decryption SKIPJACKDecryption;
77
78 NAMESPACE_END
79
80 #endif
secblock.h
Classes and functions for secure memory allocations.
word32
unsigned int word32
32-bit unsigned datatype
Definition: config_int.h:62
FixedBlockSize
Inherited by algorithms with fixed block size.
Definition: seckey.h:40
BlockCipherImpl
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:305
FixedKeyLength
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:124
SKIPJACK_Info
SKIPJACK block cipher information.
Definition: skipjack.h:22
BlockCipherDocumentation
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher.
Definition: seckey.h:398
seckey.h
Classes and functions for implementing secret key algorithms.
BlockCipherFinal< ENCRYPTION, Enc >
FixedSizeSecBlock< byte, 10 *256 >
CryptoPP
Crypto++ library namespace.
SKIPJACK
SKIPJACK block cipher.
Definition: skipjack.h:35
CRYPTOPP_API
#define CRYPTOPP_API
Win32 calling convention.
Definition: config_dll.h:119
BlockCipher
Interface for one direction (encryption or decryption) of a block cipher.
Definition: cryptlib.h:1282
NameValuePairs
Interface for retrieving values given their names.
Definition: cryptlib.h:321