#include <cryptlib.h>
Inheritance diagram for BlockCipher:
Definition at line 606 of file cryptlib.h.
Public Types | |
| enum | IV_Requirement { UNIQUE_IV = 0, RANDOM_IV, UNPREDICTABLE_RANDOM_IV, INTERNALLY_GENERATED_IV, NOT_RESYNCHRONIZABLE } |
Public Member Functions | |
| virtual void | ProcessAndXorBlock (const byte *inBlock, const byte *xorBlock, byte *outBlock) const =0 |
| encrypt or decrypt inBlock, xor with xorBlock, and write to outBlock | |
| void | ProcessBlock (const byte *inBlock, byte *outBlock) const |
| encrypt or decrypt one block | |
| void | ProcessBlock (byte *inoutBlock) const |
| encrypt or decrypt one block in place | |
| virtual unsigned int | BlockSize () const=0 |
| block size of the cipher in bytes | |
| virtual unsigned int | BlockAlignment () const |
| block pointers must be divisible by this | |
| virtual bool | IsPermutation () const |
| returns true if this is a permutation (i.e. there is an inverse transformation) | |
| virtual bool | IsForwardTransformation () const=0 |
| returns true if this is an encryption object | |
| virtual unsigned int | OptimalNumberOfParallelBlocks () const |
| return number of blocks that can be processed in parallel, for bit-slicing implementations | |
| virtual void | ProcessAndXorMultipleBlocks (const byte *inBlocks, const byte *xorBlocks, byte *outBlocks, size_t numberOfBlocks) const |
| encrypt or decrypt multiple blocks, for bit-slicing implementations | |
| CipherDir | GetCipherDirection () const |
| 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 | |
| virtual size_t | MinKeyLength () const=0 |
| returns smallest valid key length in bytes */ | |
| virtual size_t | MaxKeyLength () const=0 |
| returns largest valid key length in bytes */ | |
| virtual size_t | DefaultKeyLength () const=0 |
| returns default (recommended) key length in bytes */ | |
| virtual size_t | GetValidKeyLength (size_t n) const=0 |
| returns the smallest valid key length in bytes that is >= min(n, GetMaxKeyLength()) | |
| virtual bool | IsValidKeyLength (size_t n) const |
| returns whether n is a valid key length | |
| virtual void | SetKey (const byte *key, size_t length, const NameValuePairs ¶ms=g_nullNameValuePairs) |
| set or reset the key of this object | |
| void | SetKeyWithRounds (const byte *key, size_t length, int rounds) |
| calls SetKey() with an NameValuePairs object that just specifies "Rounds" | |
| void | SetKeyWithIV (const byte *key, size_t length, const byte *iv) |
| calls SetKey() with an NameValuePairs object that just specifies "IV" | |
| virtual IV_Requirement | IVRequirement () const=0 |
| returns the minimal requirement for secure IVs | |
| 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) | |
| virtual unsigned int | IVSize () const |
| returns size of IVs used by this object | |
| virtual void | Resynchronize (const byte *IV) |
| resynchronize with an IV | |
| virtual void | GetNextIV (RandomNumberGenerator &rng, byte *IV) |
| get a secure IV for the next message | |
Protected Member Functions | |
| virtual const Algorithm & | GetAlgorithm () const=0 |
| virtual void | UncheckedSetKey (const byte *key, unsigned int length, const NameValuePairs ¶ms)=0 |
| void | ThrowIfInvalidKeyLength (size_t length) |
| void | ThrowIfResynchronizable () |
| void | ThrowIfInvalidIV (const byte *iv) |
| const byte * | GetIVAndThrowIfInvalid (const NameValuePairs ¶ms) |
| void | AssertValidKeyLength (size_t length) const |
enum SimpleKeyingInterface::IV_Requirement [inherited] |
| UNIQUE_IV | |
| RANDOM_IV | |
| UNPREDICTABLE_RANDOM_IV | |
| INTERNALLY_GENERATED_IV | |
| NOT_RESYNCHRONIZABLE |
Definition at line 382 of file cryptlib.h.
| void BlockTransformation::ProcessBlock | ( | const byte * | inBlock, | |
| byte * | outBlock | |||
| ) | const [inline, inherited] |
encrypt or decrypt one block
Definition at line 434 of file cryptlib.h.
Referenced by CBC_Encryption::ProcessBlocks(), CBC_CTS_Decryption::ProcessLastBlock(), CBC_CTS_Encryption::ProcessLastBlock(), VMAC_Base::Resynchronize(), CFB_ModePolicy::TransformRegister(), and VMAC_Base::UncheckedSetKey().
| void SimpleKeyingInterface::SetKey | ( | const byte * | key, | |
| size_t | length, | |||
| const NameValuePairs & | params = g_nullNameValuePairs | |||
| ) | [virtual, inherited] |
set or reset the key of this object
| params | is used to specify Rounds, BlockSize, etc |
Reimplemented in ECB_OneWay.
Definition at line 52 of file cryptlib.cpp.
References SimpleKeyingInterface::ThrowIfInvalidKeyLength().
Referenced by CBC_MAC< T >::CBC_MAC(), CipherModeFinalTemplate_CipherHolder< CIPHER, BASE >::CipherModeFinalTemplate_CipherHolder(), DMAC< T >::DMAC(), HMAC< T >::HMAC(), Weak::PanamaMAC< B >::PanamaMAC(), ECB_OneWay::SetKey(), SimpleKeyingInterface::SetKeyWithIV(), SimpleKeyingInterface::SetKeyWithRounds(), VMAC_Base::UncheckedSetKey(), and BlockOrientedCipherModeBase::UncheckedSetKey().
| bool SimpleKeyingInterface::IsResynchronizable | ( | ) | const [inline, inherited] |
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 388 of file cryptlib.h.
Referenced by SimpleKeyingInterface::ThrowIfInvalidIV(), SimpleKeyingInterface::ThrowIfResynchronizable(), and BlockOrientedCipherModeBase::UncheckedSetKey().
| void SimpleKeyingInterface::GetNextIV | ( | RandomNumberGenerator & | rng, | |
| byte * | IV | |||
| ) | [virtual, inherited] |
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 in VMAC_Base.
Definition at line 96 of file cryptlib.cpp.
References RandomNumberGenerator::GenerateBlock(), and SimpleKeyingInterface::IVSize().
Referenced by VMAC_Base::GetNextIV().
1.5.2