Crypto++ 8.9 Free C++ class library of cryptographic schemes

Public Member Functions | List of all members
CBC_Encryption Class Reference

CBC block cipher mode of operation encryption operation. More...

Inheritance diagram for CBC_Encryption:

## Public Member Functions
void | ProcessData (byte *outString, const byte *inString, size_t length)
| Encrypt or decrypt an array of bytes. More...
Public Member Functions inherited from CBC_ModeBase
IV_Requirement | IVRequirement () const
| Minimal requirement for secure IVs. More...
bool | RequireAlignedInput () const
unsigned int | MinLastBlockSize () const
| Provides the size of the last block. More...
Public Member Functions inherited from BlockOrientedCipherModeBase
void | UncheckedSetKey (const byte *key, unsigned int length, const NameValuePairs &params)
| Sets the key for this object without performing parameter validation. More...
unsigned int | MandatoryBlockSize () const
| Provides the mandatory block size of the cipher. More...
bool | IsRandomAccess () const
| Determines whether the cipher supports random access. More...
bool | IsSelfInverting () const
| Determines whether the cipher is self-inverting. More...
bool | IsForwardTransformation () const
| Determines if the cipher is being operated in its forward direction. More...
void | Resynchronize (const byte *iv, int length=-1)
| Resynchronize with an IV. More...
Public Member Functions inherited from CipherModeBase
std::string | AlgorithmProvider () const
| Retrieve the provider of this algorithm. More...
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 keylength) const
| Returns a valid key length for the algorithm. More...
bool | IsValidKeyLength (size_t keylength) const
| Returns whether keylength is a valid key length. More...
unsigned int | OptimalDataAlignment () const
| Provides input and output data alignment for optimal performance. More...
unsigned int | IVSize () const
| Returns length of the IV accepted by this object. More...
void | SetCipher (BlockCipher &cipher)
| Set external block cipher. More...
void | SetCipherWithIV (BlockCipher &cipher, const byte *iv, int feedbackSize=0)
| Set external block cipher and IV. More...
Public Member Functions inherited from 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
StreamTransformation & | Ref ()
| Provides a reference to this object. More...
virtual unsigned int | OptimalBlockSize () const
| Provides the input block size most efficient for this 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 size_t | ProcessLastBlock (byte *outString, size_t outLength, const byte *inString, size_t inLength)
| Encrypt or decrypt the last block of data. More...
virtual bool | IsLastBlockSpecial () const
| Determines if the last block receives special processing. 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...
virtual void | Seek (lword pos)
| Seek to an absolute position. More...
Public Member Functions inherited from Algorithm
| Algorithm (bool checkSelfTestStatus=true)
| Interface for all crypto algorithms. More...
virtual std::string | AlgorithmName () const
| Provides the name of this algorithm. More...
Public Member Functions inherited from Clonable
virtual Clonable * | Clone () const
| Copies this object. More...

## Additional Inherited Members
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...
Static Public Member Functions inherited from CBC_ModeBase
static const char * | StaticAlgorithmName ()

## Detailed Description

CBC block cipher mode of operation encryption operation.

Definition at line 295 of file modes.h.

## Member Function Documentation

## ◆ ProcessData()

void CBC_Encryption::ProcessData | ( | byte * | outString,
|  | const byte * | inString,
|  | size_t | length
| ) |  |
| virtual

Encrypt or decrypt an array of bytes.

Parameters

  outString | the output byte buffer
  inString | the input byte buffer
  length | the size of the input and output byte buffers, in bytes

ProcessData is called with a string of bytes whose size depends on MandatoryBlockSize. Either `inString == outString`, or they must not overlap.

See also
  ProcessData, ProcessLastBlock, MandatoryBlockSize, MinLastBlockSize, BlockPaddingSchemeDef, IsLastBlockSpecial

Implements StreamTransformation.

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

- modes.h