Inheritance diagram for CipherModeBase:
Definition at line 31 of file modes.h.
Public Member Functions | |
size_t | MinKeyLength () const |
returns smallest valid key length in bytes */ | |
size_t | MaxKeyLength () const |
returns largest valid key length in bytes */ | |
size_t | DefaultKeyLength () const |
returns default (recommended) key length in bytes */ | |
size_t | GetValidKeyLength (size_t n) const |
returns the smallest valid key length in bytes that is >= min(n, GetMaxKeyLength()) | |
bool | IsValidKeyLength (size_t n) const |
returns whether n is a valid key length | |
void | SetKey (const byte *key, size_t 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 | |
virtual IV_Requirement | IVRequirement () const=0 |
returns the minimal requirement for secure IVs | |
Protected Member Functions | |
unsigned int | BlockSize () const |
virtual void | SetFeedbackSize (unsigned int feedbackSize) |
virtual void | ResizeBuffers () |
virtual void | UncheckedSetKey (const NameValuePairs ¶ms, const byte *key, unsigned int length, const byte *iv)=0 |
Protected Attributes | |
BlockCipher * | m_cipher |
SecByteBlock | m_register |
void CipherModeBase::SetKey | ( | const byte * | key, | |
size_t | length, | |||
const NameValuePairs & | params = g_nullNameValuePairs | |||
) | [virtual] |
set or reset the key of this object
params | is used to specify Rounds, BlockSize, etc |
Implements SimpleKeyingInterface.
Definition at line 27 of file modes.cpp.
References SimpleKeyingInterface::GetIVAndThrowIfInvalid().
void CipherModeBase::GetNextIV | ( | byte * | IV | ) | [virtual] |
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 BlockSize(), StreamTransformation::IsForwardTransformation(), m_cipher, and m_register.