iaik.tc.tss.api.structs.tpm
Class TcTpmDigest

Object
  TcBasicTypeDecoder
      TcCompositeTypeDecoder
          TcTpmDigest

Direct Known Subclasses:

TcTpmChosenIdHash, TcTpmCompositeHash, TcTpmPcrValue

public class TcTpmDigest
extends TcCompositeTypeDecoder

The digest value reports the result of a hash operation. In Version 1.0 of this specification the hash algorithm is SHA-1 with a resulting hash result being 160 bits. This lack of flexibility is because the size of a digest has a dramatic effect on the implementation of a hardware TPM.

TCPA 1.1b Main Specification, page number:

26

Constructor Summary

TcTpmDigest()
Constructor - see superclass for details

TcTpmDigest(TcBlobData blob)
Constructor - see superclass for details

TcTpmDigest(TcBlobData blob, int offset)
Constructor - see superclass for details

TcTpmDigest(TcCompositeTypeDecoder composite)
Constructor - see superclass for details

Method Summary

TcBlobData	getDigest() Returns contents of the digest field.
TcBlobData	getEncoded() This method encodes the TPM_DIGEST as a byte blob.
void	setDigest(TcBlobData digest) Sets the digest field.
String	toString() This method returns a String representation of the object.

Methods inherited from class TcBasicTypeDecoder

decodeBoolean, decodeByte, decodeBytes, decodeBytes, decodeTpmAlgorithmId, decodeTpmAuthDataUsage, decodeTpmEncScheme, decodeTpmKeyFlags, decodeTpmKeyUsage, decodeTpmSigScheme, decodeTssAlgorithmId, decodeTssEncScheme, decodeTssEvenType, decodeTssFlag, decodeTssHandle, decodeTssHContext, decodeTssHEncData, decodeTssHHash, decodeTssHKey, decodeTssHObjet, decodeTssHPcrs, decodeTssHPolicy, decodeTssHPS, decodeTssHTpm, decodeTssKeyUsageId, decodeTssMigrationScheme, decodeTssResult, decodeTssSigScheme, decodeUINT16, decodeUINT32, decodeUINT64

Methods inherited from class Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

TcTpmDigest

public TcTpmDigest()

Constructor - see superclass for details

TcTpmDigest

public TcTpmDigest(TcBlobData blob)

Constructor - see superclass for details

TcTpmDigest

public TcTpmDigest(TcBlobData blob,
                   int offset)

Constructor - see superclass for details

TcTpmDigest

public TcTpmDigest(TcCompositeTypeDecoder composite)

Constructor - see superclass for details

Method Detail

getEncoded

public TcBlobData getEncoded()

This method encodes the TPM_DIGEST as a byte blob.

Specified by:

getEncoded in class TcCompositeTypeDecoder

Returns:

byte blob to be passed to other layers (e.g. TSS)

toString

public String toString()

This method returns a String representation of the object.

Overrides:

toString in class TcCompositeTypeDecoder

getDigest

public TcBlobData getDigest()

Returns contents of the digest field.

setDigest

public void setDigest(TcBlobData digest)

Sets the digest field.