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author | Alexander Harkness <bearbin@gmail.com> | 2013-11-24 15:21:13 +0100 |
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committer | Alexander Harkness <bearbin@gmail.com> | 2013-11-24 15:21:13 +0100 |
commit | 3438e5d3ddf8444f0e31009ffbe8237ef3752c22 (patch) | |
tree | 7c2f76d5e9281c130e60fb932c4dda89a49863b6 /CryptoPP/seckey.h | |
parent | Moved source to src (diff) | |
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Diffstat (limited to 'CryptoPP/seckey.h')
-rw-r--r-- | CryptoPP/seckey.h | 221 |
1 files changed, 0 insertions, 221 deletions
diff --git a/CryptoPP/seckey.h b/CryptoPP/seckey.h deleted file mode 100644 index 35046a61b..000000000 --- a/CryptoPP/seckey.h +++ /dev/null @@ -1,221 +0,0 @@ -// seckey.h - written and placed in the public domain by Wei Dai - -// This file contains helper classes/functions for implementing secret key algorithms. - -#ifndef CRYPTOPP_SECKEY_H -#define CRYPTOPP_SECKEY_H - -#include "cryptlib.h" -#include "misc.h" -#include "simple.h" - -NAMESPACE_BEGIN(CryptoPP) - -inline CipherDir ReverseCipherDir(CipherDir dir) -{ - return (dir == ENCRYPTION) ? DECRYPTION : ENCRYPTION; -} - -//! to be inherited by block ciphers with fixed block size -template <unsigned int N> -class FixedBlockSize -{ -public: - CRYPTOPP_CONSTANT(BLOCKSIZE = N) -}; - -// ************** rounds *************** - -//! to be inherited by ciphers with fixed number of rounds -template <unsigned int R> -class FixedRounds -{ -public: - CRYPTOPP_CONSTANT(ROUNDS = R) -}; - -//! to be inherited by ciphers with variable number of rounds -template <unsigned int D, unsigned int N=1, unsigned int M=INT_MAX> // use INT_MAX here because enums are treated as signed ints -class VariableRounds -{ -public: - CRYPTOPP_CONSTANT(DEFAULT_ROUNDS = D) - CRYPTOPP_CONSTANT(MIN_ROUNDS = N) - CRYPTOPP_CONSTANT(MAX_ROUNDS = M) - static unsigned int StaticGetDefaultRounds(size_t keylength) {return DEFAULT_ROUNDS;} - -protected: - inline void ThrowIfInvalidRounds(int rounds, const Algorithm *alg) - { - if (rounds < MIN_ROUNDS || rounds > MAX_ROUNDS) - throw InvalidRounds(alg->AlgorithmName(), rounds); - } - - inline unsigned int GetRoundsAndThrowIfInvalid(const NameValuePairs ¶m, const Algorithm *alg) - { - int rounds = param.GetIntValueWithDefault("Rounds", DEFAULT_ROUNDS); - ThrowIfInvalidRounds(rounds, alg); - return (unsigned int)rounds; - } -}; - -// ************** key length *************** - -//! to be inherited by keyed algorithms with fixed key length -template <unsigned int N, unsigned int IV_REQ = SimpleKeyingInterface::NOT_RESYNCHRONIZABLE, unsigned int IV_L = 0> -class FixedKeyLength -{ -public: - CRYPTOPP_CONSTANT(KEYLENGTH=N) - CRYPTOPP_CONSTANT(MIN_KEYLENGTH=N) - CRYPTOPP_CONSTANT(MAX_KEYLENGTH=N) - CRYPTOPP_CONSTANT(DEFAULT_KEYLENGTH=N) - CRYPTOPP_CONSTANT(IV_REQUIREMENT = IV_REQ) - CRYPTOPP_CONSTANT(IV_LENGTH = IV_L) - static size_t CRYPTOPP_API StaticGetValidKeyLength(size_t) {return KEYLENGTH;} -}; - -/// support query of variable key length, template parameters are default, min, max, multiple (default multiple 1) -template <unsigned int D, unsigned int N, unsigned int M, unsigned int Q = 1, unsigned int IV_REQ = SimpleKeyingInterface::NOT_RESYNCHRONIZABLE, unsigned int IV_L = 0> -class VariableKeyLength -{ - // make these private to avoid Doxygen documenting them in all derived classes - CRYPTOPP_COMPILE_ASSERT(Q > 0); - CRYPTOPP_COMPILE_ASSERT(N % Q == 0); - CRYPTOPP_COMPILE_ASSERT(M % Q == 0); - CRYPTOPP_COMPILE_ASSERT(N < M); - CRYPTOPP_COMPILE_ASSERT(D >= N); - CRYPTOPP_COMPILE_ASSERT(M >= D); - -public: - CRYPTOPP_CONSTANT(MIN_KEYLENGTH=N) - CRYPTOPP_CONSTANT(MAX_KEYLENGTH=M) - CRYPTOPP_CONSTANT(DEFAULT_KEYLENGTH=D) - CRYPTOPP_CONSTANT(KEYLENGTH_MULTIPLE=Q) - CRYPTOPP_CONSTANT(IV_REQUIREMENT=IV_REQ) - CRYPTOPP_CONSTANT(IV_LENGTH=IV_L) - - static size_t CRYPTOPP_API StaticGetValidKeyLength(size_t n) - { - if (n < (size_t)MIN_KEYLENGTH) - return MIN_KEYLENGTH; - else if (n > (size_t)MAX_KEYLENGTH) - return (size_t)MAX_KEYLENGTH; - else - { - n += KEYLENGTH_MULTIPLE-1; - return n - n%KEYLENGTH_MULTIPLE; - } - } -}; - -/// support query of key length that's the same as another class -template <class T, unsigned int IV_REQ = SimpleKeyingInterface::NOT_RESYNCHRONIZABLE, unsigned int IV_L = 0> -class SameKeyLengthAs -{ -public: - CRYPTOPP_CONSTANT(MIN_KEYLENGTH=T::MIN_KEYLENGTH) - CRYPTOPP_CONSTANT(MAX_KEYLENGTH=T::MAX_KEYLENGTH) - CRYPTOPP_CONSTANT(DEFAULT_KEYLENGTH=T::DEFAULT_KEYLENGTH) - CRYPTOPP_CONSTANT(IV_REQUIREMENT=IV_REQ) - CRYPTOPP_CONSTANT(IV_LENGTH=IV_L) - - static size_t CRYPTOPP_API StaticGetValidKeyLength(size_t keylength) - {return T::StaticGetValidKeyLength(keylength);} -}; - -// ************** implementation helper for SimpleKeyed *************** - -//! _ -template <class BASE, class INFO = BASE> -class CRYPTOPP_NO_VTABLE SimpleKeyingInterfaceImpl : public BASE -{ -public: - size_t MinKeyLength() const {return INFO::MIN_KEYLENGTH;} - size_t MaxKeyLength() const {return (size_t)INFO::MAX_KEYLENGTH;} - size_t DefaultKeyLength() const {return INFO::DEFAULT_KEYLENGTH;} - size_t GetValidKeyLength(size_t n) const {return INFO::StaticGetValidKeyLength(n);} - SimpleKeyingInterface::IV_Requirement IVRequirement() const {return (SimpleKeyingInterface::IV_Requirement)INFO::IV_REQUIREMENT;} - unsigned int IVSize() const {return INFO::IV_LENGTH;} -}; - -template <class INFO, class BASE = BlockCipher> -class CRYPTOPP_NO_VTABLE BlockCipherImpl : public AlgorithmImpl<SimpleKeyingInterfaceImpl<TwoBases<BASE, INFO> > > -{ -public: - unsigned int BlockSize() const {return this->BLOCKSIZE;} -}; - -//! _ -template <CipherDir DIR, class BASE> -class BlockCipherFinal : public ClonableImpl<BlockCipherFinal<DIR, BASE>, BASE> -{ -public: - BlockCipherFinal() {} - BlockCipherFinal(const byte *key) - {this->SetKey(key, this->DEFAULT_KEYLENGTH);} - BlockCipherFinal(const byte *key, size_t length) - {this->SetKey(key, length);} - BlockCipherFinal(const byte *key, size_t length, unsigned int rounds) - {this->SetKeyWithRounds(key, length, rounds);} - - bool IsForwardTransformation() const {return DIR == ENCRYPTION;} -}; - -//! _ -template <class BASE, class INFO = BASE> -class MessageAuthenticationCodeImpl : public AlgorithmImpl<SimpleKeyingInterfaceImpl<BASE, INFO>, INFO> -{ -}; - -//! _ -template <class BASE> -class MessageAuthenticationCodeFinal : public ClonableImpl<MessageAuthenticationCodeFinal<BASE>, MessageAuthenticationCodeImpl<BASE> > -{ -public: - MessageAuthenticationCodeFinal() {} - MessageAuthenticationCodeFinal(const byte *key) - {this->SetKey(key, this->DEFAULT_KEYLENGTH);} - MessageAuthenticationCodeFinal(const byte *key, size_t length) - {this->SetKey(key, length);} -}; - -// ************** documentation *************** - -//! These objects usually should not be used directly. See CipherModeDocumentation instead. -/*! Each class derived from this one defines two types, Encryption and Decryption, - both of which implement the BlockCipher interface. */ -struct BlockCipherDocumentation -{ - //! implements the BlockCipher interface - typedef BlockCipher Encryption; - //! implements the BlockCipher interface - typedef BlockCipher Decryption; -}; - -/*! \brief Each class derived from this one defines two types, Encryption and Decryption, - both of which implement the SymmetricCipher interface. Two types of classes derive - from this class: stream ciphers and block cipher modes. Stream ciphers can be used - alone, cipher mode classes need to be used with a block cipher. See CipherModeDocumentation - for more for information about using cipher modes and block ciphers. */ -struct SymmetricCipherDocumentation -{ - //! implements the SymmetricCipher interface - typedef SymmetricCipher Encryption; - //! implements the SymmetricCipher interface - typedef SymmetricCipher Decryption; -}; - -/*! \brief Each class derived from this one defines two types, Encryption and Decryption, - both of which implement the AuthenticatedSymmetricCipher interface. */ -struct AuthenticatedSymmetricCipherDocumentation -{ - //! implements the AuthenticatedSymmetricCipher interface - typedef AuthenticatedSymmetricCipher Encryption; - //! implements the AuthenticatedSymmetricCipher interface - typedef AuthenticatedSymmetricCipher Decryption; -}; - -NAMESPACE_END - -#endif |