Crypto++ 8.2
Free C&
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
18NAMESPACE_BEGIN(CryptoPP)
19
20/// \brief SKIPJACK block cipher information
21struct 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
68public:
71};
72
75
76NAMESPACE_END
77
78#endif
Provides class member functions to key a block cipher.
Definition: seckey.h:318
Provides a base implementation of Algorithm and SimpleKeyingInterface for block ciphers.
Definition: seckey.h:306
Inherited by algorithms with fixed block size.
Definition: seckey.h:41
Inherited by keyed algorithms with fixed key length.
Definition: seckey.h:125
Fixed size stack-based SecBlock.
Definition: secblock.h:1078
Interface for retrieving values given their names.
Definition: cryptlib.h:294
SKIPJACK block cipher.
Definition: skipjack.h:34
Crypto++ library namespace.
Classes and functions for secure memory allocations.
Classes and functions for implementing secret key algorithms.
Provides Encryption and Decryption typedefs used by derived classes to implement a block cipher.
Definition: seckey.h:399
SKIPJACK block cipher information.
Definition: skipjack.h:22