Main Page | Namespace List | Class Hierarchy | Alphabetical List | Class List | File List | Namespace Members | Class Members | File Members

SapphireHash Class Reference

#include <sapphire.h>

Inheritance diagram for SapphireHash:

HashTransformation SapphireEncryption Algorithm Clonable List of all members.

Detailed Description

Sapphire Hash.

Digest Length = 160 bits

Definition at line 100 of file sapphire.h.

Public Member Functions

 SapphireHash (unsigned int hashLength=20)
void Update (const byte *input, unsigned int length)
 process more input

void TruncatedFinal (byte *hash, unsigned int size)
 truncated version of Final()

unsigned int DigestSize () const
 size of the hash returned by Final()

virtual byte * CreateUpdateSpace (unsigned int &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

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, unsigned int 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, unsigned int 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, unsigned int digestSize, const byte *input, unsigned int length)
 truncated version of CalculateDigest()

virtual bool TruncatedVerify (const byte *digest, unsigned int digestLength)
 truncated version of Verify()

virtual bool VerifyTruncatedDigest (const byte *digest, unsigned int digestLength, const byte *input, unsigned int 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 (unsigned int size) const


Member Function Documentation

virtual void HashTransformation::Final (  byte *  digest  )  [inline, virtual, inherited]
 

compute hash for current message, then restart for a new message

Precondition:
size of digest == DigestSize().

Definition at line 509 of file cryptlib.h.

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 532 of file cryptlib.h.


The documentation for this class was generated from the following files:
Generated on Fri Aug 13 09:57:00 2004 for Crypto++ by doxygen 1.3.7