Inheritance diagram for ECB_OneWay:
Definition at line 193 of file modes.h.
Public Types | |
enum | IV_Requirement { STRUCTURED_IV = 0, RANDOM_IV, UNPREDICTABLE_RANDOM_IV, INTERNALLY_GENERATED_IV, NOT_RESYNCHRONIZABLE } |
Public Member Functions | |
IV_Requirement | IVRequirement () const |
returns the minimal requirement for secure IVs | |
unsigned int | OptimalBlockSize () const |
returns the input block size that is most efficient for this cipher | |
void | ProcessBlocks (byte *outString, const byte *inString, unsigned int numberOfBlocks) |
void | UncheckedSetKey (const NameValuePairs ¶ms, const byte *key, unsigned int length, const byte *iv) |
unsigned int | MandatoryBlockSize () const |
returns block size, if input must be processed in blocks, otherwise 1 | |
bool | IsRandomAccess () const |
returns whether this cipher supports random access | |
bool | IsSelfInverting () const |
returns whether this transformation is self-inverting (e.g. xor with a keystream) | |
bool | IsForwardTransformation () const |
returns whether this is an encryption object | |
void | Resynchronize (const byte *iv) |
resynchronize with an IV | |
void | ProcessData (byte *outString, const byte *inString, unsigned int length) |
encrypt or decrypt an array of bytes of specified length | |
unsigned int | MinKeyLength () const |
returns smallest valid key length in bytes */ | |
unsigned int | MaxKeyLength () const |
returns largest valid key length in bytes */ | |
unsigned int | DefaultKeyLength () const |
returns default (recommended) key length in bytes */ | |
unsigned int | GetValidKeyLength (unsigned int n) const |
returns the smallest valid key length in bytes that is >= min(n, GetMaxKeyLength()) | |
bool | IsValidKeyLength (unsigned int n) const |
returns whether n is a valid key length | |
void | SetKey (const byte *key, unsigned int length, const NameValuePairs ¶ms=g_nullNameValuePairs) |
set or reset the key of this object | |
unsigned int | OptimalDataAlignment () const |
returns how input should be aligned for optimal performance | |
unsigned int | IVSize () const |
returns size of IVs used by this object | |
void | GetNextIV (byte *IV) |
get a secure IV for the next message | |
StreamTransformation & | Ref () |
return a reference to this object, | |
virtual unsigned int | GetOptimalBlockSizeUsed () const |
returns how much of the current block is used up | |
virtual void | ProcessLastBlock (byte *outString, const byte *inString, unsigned int length) |
for ciphers where the last block of data is special, encrypt or decrypt the last block of data | |
virtual unsigned int | MinLastBlockSize () const |
returns the minimum size of the last block, 0 indicating the last block is not special | |
void | ProcessString (byte *inoutString, unsigned int length) |
same as ProcessData(inoutString, inoutString, length) | |
void | ProcessString (byte *outString, const byte *inString, unsigned int length) |
same as ProcessData(outString, inString, length) | |
byte | ProcessByte (byte input) |
implemented as {ProcessData(&input, &input, 1); return input;} | |
virtual void | Seek (lword n) |
for random access ciphers, seek to an absolute position | |
virtual std::string | AlgorithmName () const |
returns name of this algorithm, not universally implemented yet | |
virtual Clonable * | Clone () const |
this is not implemented by most classes yet | |
void | SetKeyWithRounds (const byte *key, unsigned int length, int rounds) |
calls SetKey() with an NameValuePairs object that just specifies "Rounds" | |
void | SetKeyWithIV (const byte *key, unsigned int length, const byte *iv) |
calls SetKey() with an NameValuePairs object that just specifies "IV" | |
bool | IsResynchronizable () const |
returns whether this object can be resynchronized (i.e. supports initialization vectors) | |
bool | CanUseRandomIVs () const |
returns whether this object can use random IVs (in addition to ones returned by GetNextIV) | |
bool | CanUsePredictableIVs () const |
returns whether this object can use random but possibly predictable IVs (in addition to ones returned by GetNextIV) | |
bool | CanUseStructuredIVs () const |
returns whether this object can use structured IVs, for example a counter (in addition to ones returned by GetNextIV) | |
Static Public Member Functions | |
static const char * | StaticAlgorithmName () |
Protected Member Functions | |
bool | RequireAlignedInput () const |
void | ResizeBuffers () |
unsigned int | BlockSize () const |
virtual void | SetFeedbackSize (unsigned int feedbackSize) |
void | ThrowIfInvalidKeyLength (const Algorithm &algorithm, unsigned int length) |
void | ThrowIfResynchronizable () |
void | ThrowIfInvalidIV (const byte *iv) |
const byte * | GetIVAndThrowIfInvalid (const NameValuePairs ¶ms) |
void | AssertValidKeyLength (unsigned int length) const |
Protected Attributes | |
SecByteBlock | m_buffer |
BlockCipher * | m_cipher |
SecByteBlock | m_register |
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returns the input block size that is most efficient for this cipher
Reimplemented from StreamTransformation. Definition at line 197 of file modes.h. References CipherModeBase::BlockSize(). |
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encrypt or decrypt an array of bytes of specified length
Implements StreamTransformation. Definition at line 127 of file modes.cpp. References BlockTransformation::BlockAlignment(), CipherModeBase::BlockSize(), BlockOrientedCipherModeBase::m_buffer, CipherModeBase::m_cipher, and BlockOrientedCipherModeBase::RequireAlignedInput(). |
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set or reset the key of this object
Implements SimpleKeyingInterface. Definition at line 27 of file modes.cpp. References SimpleKeyingInterface::GetIVAndThrowIfInvalid(). |
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get a secure IV for the next message This method should be called after you finish encrypting one message and are ready to start the next one. After calling it, you must call SetKey() or Resynchronize() before using this object again. This method is not implemented on decryption objects. Reimplemented from SimpleKeyingInterface. Reimplemented in CTR_ModePolicy. Definition at line 32 of file modes.cpp. References CipherModeBase::BlockSize(), StreamTransformation::IsForwardTransformation(), CipherModeBase::m_cipher, CipherModeBase::m_register, and BlockTransformation::ProcessBlock(). |
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return a reference to this object, This function is useful for passing a temporary StreamTransformation object to a function that takes a non-const reference. Definition at line 469 of file cryptlib.h. |
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for ciphers where the last block of data is special, encrypt or decrypt the last block of data For now the only use of this function is for CBC-CTS mode. Reimplemented in CBC_CTS_Encryption, and CBC_CTS_Decryption. Definition at line 101 of file cryptlib.cpp. References StreamTransformation::MandatoryBlockSize(), StreamTransformation::MinLastBlockSize(), and StreamTransformation::ProcessData(). Referenced by StreamTransformationFilter::LastPut(). |
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returns whether this object can be resynchronized (i.e. supports initialization vectors) If this function returns true, and no IV is passed to SetKey() and CanUseStructuredIVs()==true, an IV of all 0's will be assumed. Definition at line 389 of file cryptlib.h. Referenced by SimpleKeyingInterface::ThrowIfInvalidIV(), SimpleKeyingInterface::ThrowIfResynchronizable(), and BlockOrientedCipherModeBase::UncheckedSetKey(). |