org.bouncycastle.openpgp
Class PGPOnePassSignature

java.lang.Object
  |
  +--org.bouncycastle.openpgp.PGPDefaultSignatureGenerator
        |
        +--org.bouncycastle.openpgp.PGPOnePassSignature

public class PGPOnePassSignature

extends org.bouncycastle.openpgp.PGPDefaultSignatureGenerator

A one pass signature object.

Field Summary

protected byte	lastb
protected java.io.OutputStream	sigOut
protected int	sigType
protected int	version

Constructor Summary

PGPOnePassSignature(BCPGInputStream pIn)

Method Summary

protected void	blockUpdate(byte[] block, int off, int len)
void	encode(java.io.OutputStream outStream)
protected void	getAttributesHash(PGPUserAttributeSubpacketVector userAttributes)
byte[]	getEncoded()
byte[]	getFingerprint() Return the issuer key fingerprint.
int	getHashAlgorithm()
int	getKeyAlgorithm()
long	getKeyID() Return the key-ID of the issuer signing key.
KeyIdentifier	getKeyIdentifier() Return a KeyIdentifier identifying this PGPOnePassSignature.
byte[]	getSalt() Return the salt used in the corresponding signature.
int	getSignatureType()
int	getVersion() Return the packet version.
void	init(PGPContentVerifierBuilderProvider verifierBuilderProvider, PGPPublicKey pubKey) Initialise the signature object for verification.
boolean	isContaining() Return true, if the signature contains any signatures that follow.
void	update(byte b)
void	update(byte[] b)
void	update(byte[] b, int off, int len)
protected void	updateWithIdData(int header, byte[] idBytes)
protected void	updateWithPublicKey(PGPPublicKey key)
boolean	verify(PGPSignature pgpSig) Verify the calculated signature against the passed in PGPSignature.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

lastb

protected byte lastb

sigOut

protected java.io.OutputStream sigOut

sigType

protected int sigType

version

protected final int version

Constructor Detail

PGPOnePassSignature

public PGPOnePassSignature(BCPGInputStream pIn)
                    throws java.io.IOException,
                           PGPException

Method Detail

init

public void init(PGPContentVerifierBuilderProvider verifierBuilderProvider,
                 PGPPublicKey pubKey)
          throws PGPException

Initialise the signature object for verification.

Parameters:

verifierBuilderProvider - provider for a content verifier builder for the signature type of interest.

pubKey - the public key to use for verification

Throws:

PGPException - if there's an issue with creating the verifier.

verify

public boolean verify(PGPSignature pgpSig)
               throws PGPException

Verify the calculated signature against the passed in PGPSignature.

Parameters:

pgpSig -

Returns:

boolean

Throws:

PGPException -

getVersion

public int getVersion()

Return the packet version.

Returns:

packet version

getKeyID

public long getKeyID()

Return the key-ID of the issuer signing key. For OnePassSignaturePacket.VERSION_6 packets, the key-ID is derived from the fingerprint.

Returns:

key-ID

getFingerprint

public byte[] getFingerprint()

Return the issuer key fingerprint. Only for OnePassSignaturePacket.VERSION_6 packets.

Returns:

fingerprint

getKeyIdentifier

public KeyIdentifier getKeyIdentifier()

Return a KeyIdentifier identifying this PGPOnePassSignature.

Returns:

key identifier

getSalt

public byte[] getSalt()

Return the salt used in the corresponding signature. Only for OnePassSignaturePacket.VERSION_6 packets.

Returns:

salt

getSignatureType

public int getSignatureType()

getHashAlgorithm

public int getHashAlgorithm()

getKeyAlgorithm

public int getKeyAlgorithm()

isContaining

public boolean isContaining()

Return true, if the signature contains any signatures that follow. A bracketing OPS is followed by additional OPS packets and is calculated over all the data between itself and its corresponding signature (it is an attestation for contained signatures).

Returns:

true if containing, false otherwise

getEncoded

public byte[] getEncoded()
                  throws java.io.IOException

encode

public void encode(java.io.OutputStream outStream)
            throws java.io.IOException

update

public void update(byte b)

update

public void update(byte[] b)

update

public void update(byte[] b,
                   int off,
                   int len)

blockUpdate

protected void blockUpdate(byte[] block,
                           int off,
                           int len)

updateWithIdData

protected void updateWithIdData(int header,
                                byte[] idBytes)

updateWithPublicKey

protected void updateWithPublicKey(PGPPublicKey key)
                            throws PGPException

getAttributesHash

protected void getAttributesHash(PGPUserAttributeSubpacketVector userAttributes)
                          throws PGPException