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SHA512 Class Reference

#include <sha.h>

Inheritance diagram for SHA512:

IteratedHash< word64, BigEndian, S > IteratedHashBase2< word64, BigEndian, HashTransformation > HashTransformation Algorithm Clonable List of all members.

Detailed Description

implements the SHA-512 standard

Definition at line 41 of file sha.h.

Public Types

enum  { DIGESTSIZE = 64 }
typedef BigEndian ByteOrderClass
typedef IteratedHashBase<
word64, HashTransformation
>::HashWordType 
HashWordType

Public Member Functions

std::string AlgorithmName () const
void TruncatedFinal (byte *hash, unsigned int size)
 truncated version of Final()

unsigned int DigestSize () const
unsigned int OptimalBlockSize () const
void Update (const byte *input, unsigned int length)
byte * CreateUpdateSpace (unsigned int &size)
void Restart ()
virtual void Final (byte *digest)
 compute hash for current message, then restart for a new message

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 ClonableClone () const
 this is not implemented by most classes yet


Static Public Member Functions

void Transform (word64 *digest, const word64 *data)
const char * StaticAlgorithmName ()
void CorrectEndianess (HashWordType *out, const HashWordType *in, unsigned int byteCount)

Protected Member Functions

void Init ()
void vTransform (const word64 *data)
virtual void vTransform (const HashWordType *data)=0
unsigned int BlockSize () const
 block size of underlying compression function, or 0 if not block based

void HashBlock (const HashWordType *input)
virtual void HashBlock (const word64 *input)=0
word64 GetBitCountHi () const
word64 GetBitCountLo () const
virtual unsigned int HashMultipleBlocks (const word64 *input, unsigned int length)
void PadLastBlock (unsigned int lastBlockSize, byte padFirst=0x80)
void ThrowIfInvalidTruncatedSize (unsigned int size) const

Protected Attributes

SecBlock< word64 > m_data
SecBlock< word64 > m_digest

Static Protected Attributes

const word64 K [80]


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().

Reimplemented in PKCS_DecoratedHashModule< H >, SignatureEncodingMethodWithRecovery, and EMSA2DecoratedHashModule< H >.

Definition at line 526 of file cryptlib.h.

Referenced by HashFilter::Put2(), PK_SignerBase< H >::SignAndRestart(), and PK_VerifierBase< H >::VerifyAndRestart().

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.

Reimplemented in SignatureEncodingMethodWithRecovery.

Definition at line 549 of file cryptlib.h.

Referenced by VerifierWithRecoveryTemplate< TF, H >::VerifyAndRestart().


The documentation for this class was generated from the following files:
Generated on Tue Jul 8 23:35:32 2003 for Crypto++ by doxygen 1.3.2