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GCM_Base::GCTR Class Reference

#include <gcm.h>

Inheritance diagram for GCM_Base::GCTR:
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Collaboration diagram for GCM_Base::GCTR:
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Protected Member Functions

void IncrementCounterBy256 ()
 
- Protected Member Functions inherited from ConcretePolicyHolder< Empty, AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > > >
const typename AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > >::PolicyInterfaceGetPolicy () const
 
typename AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > >::PolicyInterfaceAccessPolicy ()
 
- Protected Member Functions inherited from AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > >
void UncheckedSetKey (const byte *key, unsigned int length, const NameValuePairs &params)
 
unsigned int GetBufferByteSize (const PolicyInterface &policy) const
 
byteKeystreamBufferBegin ()
 
byteKeystreamBufferEnd ()
 
- Protected Member Functions inherited from CTR_ModePolicy
unsigned int GetAlignment () const
 Provides data alignment requirements. More...
 
unsigned int GetBytesPerIteration () const
 Provides number of bytes operated upon during an iteration. More...
 
unsigned int GetIterationsToBuffer () const
 Provides buffer size based on iterations. More...
 
void WriteKeystream (byte *buffer, size_t iterationCount)
 Generate the keystream. More...
 
bool CanOperateKeystream () const
 Flag indicating. More...
 
void OperateKeystream (KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount)
 Operates the keystream. More...
 
void CipherResynchronize (byte *keystreamBuffer, const byte *iv, size_t length)
 Resynchronize the cipher. More...
 
void SeekToIteration (lword iterationCount)
 Seeks to a random position in the stream. More...
 
- Protected Member Functions inherited from CipherModeBase
 CipherModeBase ()
 
unsigned int BlockSize () const
 
virtual void SetFeedbackSize (unsigned int feedbackSize)
 
virtual void ResizeBuffers ()
 
- Protected Member Functions inherited from SymmetricCipher
const AlgorithmGetAlgorithm () const
 Returns the base class Algorithm. More...
 
- Protected Member Functions inherited from SimpleKeyingInterface
void ThrowIfInvalidKeyLength (size_t length)
 Validates the key length. More...
 
void ThrowIfResynchronizable ()
 Validates the object. More...
 
void ThrowIfInvalidIV (const byte *iv)
 Validates the IV. More...
 
size_t ThrowIfInvalidIVLength (int length)
 Validates the IV length. More...
 
const byteGetIVAndThrowIfInvalid (const NameValuePairs &params, size_t &size)
 Retrieves and validates the IV. More...
 
void AssertValidKeyLength (size_t length) const
 Validates the key length. More...
 

Additional Inherited Members

- Public Types inherited from AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > >
typedef AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy >::PolicyInterface PolicyInterface
 
- Public Types inherited from AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy >
typedef AdditiveCipherAbstractPolicy PolicyInterface
 
- Public Types inherited from SimpleKeyingInterface
enum  IV_Requirement {
  UNIQUE_IV = 0, RANDOM_IV, UNPREDICTABLE_RANDOM_IV, INTERNALLY_GENERATED_IV,
  NOT_RESYNCHRONIZABLE
}
 Secure IVs requirements as enumerated values. More...
 
- Public Member Functions inherited from CipherModeFinalTemplate_ExternalCipher< ConcretePolicyHolder< Empty, AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > > > >
 CipherModeFinalTemplate_ExternalCipher ()
 
 CipherModeFinalTemplate_ExternalCipher (BlockCipher &cipher)
 
 CipherModeFinalTemplate_ExternalCipher (BlockCipher &cipher, const byte *iv, int feedbackSize=0)
 
std::string AlgorithmName () const
 
- Public Member Functions inherited from ConcretePolicyHolder< Empty, AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > > >
virtual ~ConcretePolicyHolder ()
 
- Public Member Functions inherited from AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > >
virtual ~AdditiveCipherTemplate ()
 
void GenerateBlock (byte *output, size_t size)
 Generate random array of bytes. More...
 
void ProcessData (byte *outString, const byte *inString, size_t length)
 Apply keystream to data. More...
 
void Resynchronize (const byte *iv, int length=-1)
 Resynchronize the cipher. More...
 
unsigned int OptimalBlockSize () const
 Provides number of ideal bytes to process. More...
 
unsigned int GetOptimalNextBlockSize () const
 Provides number of ideal bytes to process. More...
 
unsigned int OptimalDataAlignment () const
 Provides number of ideal data alignment. More...
 
bool IsSelfInverting () const
 Determines if the cipher is self inverting. More...
 
bool IsForwardTransformation () const
 Determines if the cipher is a forward transformation. More...
 
bool IsRandomAccess () const
 Flag indicating random access. More...
 
void Seek (lword position)
 Seeks to a random position in the stream. More...
 
- Public Member Functions inherited from AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy >
virtual ~AbstractPolicyHolder ()
 
- Public Member Functions inherited from CTR_ModePolicy
CRYPTOPP_STATIC_CONSTEXPR const char *CRYPTOPP_API StaticAlgorithmName ()
 
virtual ~CTR_ModePolicy ()
 
bool CipherIsRandomAccess () const
 Flag indicating random access. More...
 
IV_Requirement IVRequirement () const
 Minimal requirement for secure IVs. More...
 
- Public Member Functions inherited from CipherModeBase
virtual ~CipherModeBase ()
 
size_t MinKeyLength () const
 Returns smallest valid key length. More...
 
size_t MaxKeyLength () const
 Returns largest valid key length. More...
 
size_t DefaultKeyLength () const
 Returns default key length. More...
 
size_t GetValidKeyLength (size_t n) const
 Returns a valid key length for the algorithm. More...
 
bool IsValidKeyLength (size_t n) const
 Returns whether keylength is a valid key length. More...
 
unsigned int IVSize () const
 Returns length of the IV accepted by this object. More...
 
void SetCipher (BlockCipher &cipher)
 
void SetCipherWithIV (BlockCipher &cipher, const byte *iv, int feedbackSize=0)
 
- Public Member Functions inherited from SimpleKeyingInterface
virtual ~SimpleKeyingInterface ()
 
virtual void SetKey (const byte *key, size_t length, const NameValuePairs &params=g_nullNameValuePairs)
 Sets or reset the key of this object. More...
 
void SetKeyWithRounds (const byte *key, size_t length, int rounds)
 Sets or reset the key of this object. More...
 
void SetKeyWithIV (const byte *key, size_t length, const byte *iv, size_t ivLength)
 Sets or reset the key of this object. More...
 
void SetKeyWithIV (const byte *key, size_t length, const byte *iv)
 Sets or reset the key of this object. More...
 
bool IsResynchronizable () const
 Determines if the object can be resynchronized. More...
 
bool CanUseRandomIVs () const
 Determines if the object can use random IVs. More...
 
bool CanUsePredictableIVs () const
 Determines if the object can use random but possibly predictable IVs. More...
 
bool CanUseStructuredIVs () const
 Determines if the object can use structured IVs. More...
 
unsigned int DefaultIVLength () const
 Provides the default size of an IV. More...
 
virtual unsigned int MinIVLength () const
 Provides the minimum size of an IV. More...
 
virtual unsigned int MaxIVLength () const
 Provides the maximum size of an IV. More...
 
virtual void GetNextIV (RandomNumberGenerator &rng, byte *iv)
 Retrieves a secure IV for the next message. More...
 
- Public Member Functions inherited from StreamTransformation
virtual ~StreamTransformation ()
 
StreamTransformationRef ()
 Provides a reference to this object. More...
 
virtual unsigned int MandatoryBlockSize () const
 Provides the mandatory block size of the cipher. More...
 
virtual unsigned int GetOptimalBlockSizeUsed () const
 Provides the number of bytes used in the current block when processing at optimal block size. More...
 
virtual void ProcessLastBlock (byte *outString, const byte *inString, size_t length)
 Encrypt or decrypt the last block of data. More...
 
virtual unsigned int MinLastBlockSize () const
 Provides the size of the last block. More...
 
void ProcessString (byte *inoutString, size_t length)
 Encrypt or decrypt a string of bytes. More...
 
void ProcessString (byte *outString, const byte *inString, size_t length)
 Encrypt or decrypt a string of bytes. More...
 
byte ProcessByte (byte input)
 Encrypt or decrypt a byte. More...
 
- Public Member Functions inherited from Algorithm
virtual ~Algorithm ()
 
 Algorithm (bool checkSelfTestStatus=true)
 Interface for all crypto algorithms. More...
 
- Public Member Functions inherited from Clonable
virtual ~Clonable ()
 
virtual ClonableClone () const
 Copies this object. More...
 
- Public Member Functions inherited from AdditiveCipherAbstractPolicy
virtual ~AdditiveCipherAbstractPolicy ()
 
virtual unsigned int GetOptimalBlockSize () const
 Provides number of ideal bytes to process. More...
 
- Public Member Functions inherited from RandomNumberGenerator
virtual ~RandomNumberGenerator ()
 
virtual void IncorporateEntropy (const byte *input, size_t length)
 Update RNG state with additional unpredictable values. More...
 
virtual bool CanIncorporateEntropy () const
 Determines if a generator can accept additional entropy. More...
 
virtual byte GenerateByte ()
 Generate new random byte and return it. More...
 
virtual unsigned int GenerateBit ()
 Generate new random bit and return it. More...
 
virtual word32 GenerateWord32 (word32 min=0, word32 max=0xffffffffUL)
 Generate a random 32 bit word in the range min to max, inclusive. More...
 
virtual void GenerateIntoBufferedTransformation (BufferedTransformation &target, const std::string &channel, lword length)
 Generate random bytes into a BufferedTransformation. More...
 
virtual void DiscardBytes (size_t n)
 Generate and discard n bytes. More...
 
template<class IT >
void Shuffle (IT begin, IT end)
 Randomly shuffle the specified array. More...
 
- Protected Attributes inherited from AdditiveCipherTemplate< AbstractPolicyHolder< AdditiveCipherAbstractPolicy, CTR_ModePolicy > >
SecByteBlock m_buffer
 
size_t m_leftOver
 
- Protected Attributes inherited from CTR_ModePolicy
AlignedSecByteBlock m_counterArray
 
- Protected Attributes inherited from CipherModeBase
BlockCipherm_cipher
 
AlignedSecByteBlock m_register
 

Detailed Description

Definition at line 82 of file gcm.h.

Member Function Documentation

void GCM_Base::GCTR::IncrementCounterBy256 ( )
protectedvirtual

Reimplemented from CTR_ModePolicy.

Definition at line 49 of file gcm.cpp.

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The documentation for this class was generated from the following files: