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Protected Member Functions | Protected Attributes | List of all members
PanamaCipherPolicy< B > Class Template Reference

Panama stream cipher operation. More...

#include <panama.h>

Inheritance diagram for PanamaCipherPolicy< B >:
AdditiveCipherConcretePolicy< word32, 8 > PanamaCipherInfo< B > Panama< B > AdditiveCipherAbstractPolicy FixedKeyLength< 32, SimpleKeyingInterface::UNIQUE_IV, 32 >

Protected Member Functions

std::string AlgorithmProvider () const
 Retrieve the provider of this algorithm.
 
void CipherSetKey (const NameValuePairs &params, const byte *key, size_t length)
 Key the cipher.
 
void OperateKeystream (KeystreamOperation operation, byte *output, const byte *input, size_t iterationCount)
 Operates the keystream.
 
bool CipherIsRandomAccess () const
 Flag indicating random access.
 
void CipherResynchronize (byte *keystreamBuffer, const byte *iv, size_t length)
 Resynchronize the cipher.
 
unsigned int GetAlignment () const
 Provides data alignment requirements.
 
- Protected Member Functions inherited from Panama< B >
 CRYPTOPP_CONSTANT (STAGES=32)
 
std::string AlgorithmProvider () const
 
void Reset ()
 
void Iterate (size_t count, const word32 *p=NULLPTR, byte *output=NULLPTR, const byte *input=NULLPTR, KeystreamOperation operation=WRITE_KEYSTREAM)
 

Protected Attributes

FixedSizeSecBlock< word32, 8 > m_key
 
FixedSizeSecBlock< word32, 8 > m_buf
 
- Protected Attributes inherited from Panama< B >
FixedSizeAlignedSecBlock< word32, 20+8 *32 > m_state
 

Additional Inherited Members

- Public Types inherited from AdditiveCipherConcretePolicy< word32, 8 >
typedef word32 WordType
 Word type for the cipher.
 
- Public Member Functions inherited from AdditiveCipherConcretePolicy< word32, 8 >
 CRYPTOPP_CONSTANT (BYTES_PER_ITERATION=sizeof(WordType) *W)
 Number of bytes for an iteration.
 
unsigned int GetBytesPerIteration () const
 Provides number of bytes operated upon during an iteration.
 
unsigned int GetIterationsToBuffer () const
 Provides buffer size based on iterations.
 
bool CanOperateKeystream () const
 Flag indicating.
 
- Public Member Functions inherited from AdditiveCipherAbstractPolicy
virtual unsigned int GetOptimalBlockSize () const
 Provides number of ideal bytes to process.
 
virtual void WriteKeystream (byte *keystream, size_t iterationCount)
 Generate the keystream.
 
virtual void SeekToIteration (lword iterationCount)
 Seeks to a random position in the stream.
 
- Public Member Functions inherited from PanamaCipherInfo< B >
CRYPTOPP_STATIC_CONSTEXPR const char * StaticAlgorithmName ()
 
- Public Member Functions inherited from FixedKeyLength< 32, SimpleKeyingInterface::UNIQUE_IV, 32 >
 CRYPTOPP_CONSTANT (KEYLENGTH=N)
 The default key length used by the algorithm provided as a constant.
 
 CRYPTOPP_CONSTANT (MIN_KEYLENGTH=N)
 The minimum key length used by the algorithm provided as a constant.
 
 CRYPTOPP_CONSTANT (MAX_KEYLENGTH=N)
 The maximum key length used by the algorithm provided as a constant.
 
 CRYPTOPP_CONSTANT (DEFAULT_KEYLENGTH=N)
 The default key length used by the algorithm provided as a constant.
 
 CRYPTOPP_CONSTANT (IV_REQUIREMENT=IV_REQ)
 The default IV requirements for the algorithm provided as a constant.
 
 CRYPTOPP_CONSTANT (IV_LENGTH=IV_L)
 The default IV length used by the algorithm provided as a constant.
 
CRYPTOPP_STATIC_CONSTEXPR size_t CRYPTOPP_API StaticGetValidKeyLength (size_t keylength)
 The default key length for the algorithm provided by a static function.
 
- Protected Types inherited from Panama< B >
typedef word32 Stage[8]
 

Detailed Description

template<class B>
class PanamaCipherPolicy< B >

Panama stream cipher operation.

Definition at line 141 of file panama.h.

Constructor & Destructor Documentation

◆ ~PanamaCipherPolicy()

template<class B >
virtual PanamaCipherPolicy< B >::~PanamaCipherPolicy ( )
inlineprotectedvirtual

Definition at line 146 of file panama.h.

Member Function Documentation

◆ AlgorithmProvider()

template<class B >
std::string PanamaCipherPolicy< B >::AlgorithmProvider ( ) const
protectedvirtual

Retrieve the provider of this algorithm.

Returns
the algorithm provider

The algorithm provider can be a name like "C++", "SSE", "NEON", "AESNI", "ARMv8" and "Power8". C++ is standard C++ code. Other labels, like SSE, usually indicate a specialized implementation using instructions from a higher instruction set architecture (ISA). Future labels may include external hardware like a hardware security module (HSM).

Generally speaking Wei Dai's original IA-32 ASM code falls under "SSE2". Labels like "SSSE3" and "SSE4.1" follow after Wei's code and use intrinsics instead of ASM.

Algorithms which combine different instructions or ISAs provide the dominant one. For example on x86 AES/GCM returns "AESNI" rather than "CLMUL" or "AES+SSE4.1" or "AES+CLMUL" or "AES+SSE4.1+CLMUL".

Note
Provider is not universally implemented yet.

Reimplemented from AdditiveCipherAbstractPolicy.

Definition at line 494 of file panama.cpp.

◆ CipherIsRandomAccess()

template<class B >
bool PanamaCipherPolicy< B >::CipherIsRandomAccess ( ) const
inlineprotectedvirtual

Flag indicating random access.

Returns
true if the cipher is seekable, false otherwise
See also
SeekToIteration()

Implements AdditiveCipherAbstractPolicy.

Definition at line 150 of file panama.h.

◆ CipherResynchronize()

template<class B >
void PanamaCipherPolicy< B >::CipherResynchronize ( byte keystreamBuffer,
const byte iv,
size_t  length 
)
protectedvirtual

Resynchronize the cipher.

Parameters
keystreamBufferthe keystream buffer
iva byte array used to resynchronize the cipher
lengththe size of the IV array

Reimplemented from AdditiveCipherAbstractPolicy.

Definition at line 467 of file panama.cpp.

◆ CipherSetKey()

template<class B >
NAMESPACE_END void PanamaCipherPolicy< B >::CipherSetKey ( const NameValuePairs params,
const byte key,
size_t  length 
)
protectedvirtual

Key the cipher.

Parameters
paramsset of NameValuePairs use to initialize this object
keya byte array used to key the cipher
lengththe size of the key array

Implements AdditiveCipherAbstractPolicy.

Definition at line 459 of file panama.cpp.

◆ GetAlignment()

template<class B >
unsigned int PanamaCipherPolicy< B >::GetAlignment ( ) const
protectedvirtual

Provides data alignment requirements.

Returns
data alignment requirements, in bytes

Internally, the default implementation returns 1. If the stream cipher is implemented using an SSE2 ASM or intrinsics, then the value returned is usually 16.

Reimplemented from AdditiveCipherConcretePolicy< word32, 8 >.

Definition at line 500 of file panama.cpp.

◆ OperateKeystream()

template<class B >
void PanamaCipherPolicy< B >::OperateKeystream ( KeystreamOperation  operation,
byte output,
const byte input,
size_t  iterationCount 
)
protectedvirtual

Operates the keystream.

Parameters
operationthe operation with additional flags
outputthe output buffer
inputthe input buffer
iterationCountthe number of iterations to perform on the input

OperateKeystream() will attempt to operate upon GetOptimalBlockSize() buffer, which will be derived from GetBytesPerIteration().

See also
CanOperateKeystream(), OperateKeystream(), WriteKeystream(), KeystreamOperation()

Implements AdditiveCipherConcretePolicy< word32, 8 >.

Definition at line 511 of file panama.cpp.

Member Data Documentation

◆ m_buf

template<class B >
FixedSizeSecBlock<word32, 8> PanamaCipherPolicy< B >::m_buf
protected

Definition at line 155 of file panama.h.

◆ m_key

template<class B >
FixedSizeSecBlock<word32, 8> PanamaCipherPolicy< B >::m_key
protected

Definition at line 154 of file panama.h.


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