interface for accumulating messages to be signed or verified More...
#include <cryptlib.h>
Public Member Functions | |
unsigned int | DigestSize () const |
should not be called on PK_MessageAccumulator | |
void | TruncatedFinal (byte *digest, size_t digestSize) |
should not be called on PK_MessageAccumulator | |
HashTransformation & | Ref () |
return a reference to this object, useful for passing a temporary object to a function that takes a non-const reference | |
virtual void | Update (const byte *input, size_t length)=0 |
process more input | |
virtual byte * | CreateUpdateSpace (size_t &size) |
request space to write input into | |
virtual void | Final (byte *digest) |
compute hash for current message, then restart for a new message | |
virtual void | Restart () |
discard the current state, and restart with a new message | |
unsigned int | TagSize () const |
same as DigestSize() | |
virtual unsigned int | BlockSize () const |
block size of underlying compression function, or 0 if not block based | |
virtual unsigned int | OptimalBlockSize () const |
input to Update() should have length a multiple of this for optimal speed | |
virtual unsigned int | OptimalDataAlignment () const |
returns how input should be aligned for optimal performance | |
virtual void | CalculateDigest (byte *digest, const byte *input, size_t length) |
use this if your input is in one piece and you don't want to call Update() and Final() separately | |
virtual bool | Verify (const byte *digest) |
verify that digest is a valid digest for the current message, then reinitialize the object | |
virtual bool | VerifyDigest (const byte *digest, const byte *input, size_t length) |
use this if your input is in one piece and you don't want to call Update() and Verify() separately | |
virtual void | CalculateTruncatedDigest (byte *digest, size_t digestSize, const byte *input, size_t length) |
truncated version of CalculateDigest() | |
virtual bool | TruncatedVerify (const byte *digest, size_t digestLength) |
truncated version of Verify() | |
virtual bool | VerifyTruncatedDigest (const byte *digest, size_t digestLength, const byte *input, size_t length) |
truncated version of VerifyDigest() | |
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 | |
Protected Member Functions | |
void | ThrowIfInvalidTruncatedSize (size_t size) const |
interface for accumulating messages to be signed or verified
Only Update() should be called on this class. No other functions inherited from HashTransformation should be called.
Definition at line 1334 of file cryptlib.h.
virtual void HashTransformation::Final | ( | byte * | digest | ) | [inline, virtual, inherited] |
compute hash for current message, then restart for a new message
Definition at line 545 of file cryptlib.h.
Referenced by PKCS5_PBKDF2_HMAC< T >::DeriveKey(), and HMAC_Base::TruncatedFinal().
virtual bool HashTransformation::Verify | ( | const byte * | digest | ) | [inline, virtual, inherited] |
verify that digest is a valid digest for the current message, then reinitialize the object
Default implementation is to call Final() and do a bitwise comparison between its output and digest.
Definition at line 575 of file cryptlib.h.