org.bouncycastle.openpgp

Class PGPSignature

java.lang.Object

org.bouncycastle.openpgp.PGPSignature

public class PGPSignature
extends java.lang.Object

A PGP signature object.

Field Summary

Fields

Modifier and Type	Field and Description
static int	BINARY_DOCUMENT
static int	CANONICAL_TEXT_DOCUMENT
static int	CASUAL_CERTIFICATION
static int	CERTIFICATION_REVOCATION
static int	DEFAULT_CERTIFICATION
static int	DIRECT_KEY
static int	KEY_REVOCATION
static int	NO_CERTIFICATION
static int	POSITIVE_CERTIFICATION
static int	PRIMARYKEY_BINDING
static int	STAND_ALONE
static int	SUBKEY_BINDING
static int	SUBKEY_REVOCATION
static int	TIMESTAMP

Method Summary

Modifier and Type	Method and Description
void	encode(java.io.OutputStream outStream)
void	encode(java.io.OutputStream outStream, boolean forTransfer) Encode the signature to outStream, with trust packets stripped out if forTransfer is true.
java.util.Date	getCreationTime() Return the creation time of the signature.
byte[]	getDigestPrefix() Return the digest prefix of the signature.
byte[]	getEncoded()
byte[]	getEncoded(boolean forTransfer) Return an encoding of the signature, with trust packets stripped out if forTransfer is true.
int	getHashAlgorithm() Return the hash algorithm associated with this signature.
PGPSignatureSubpacketVector	getHashedSubPackets()
int	getKeyAlgorithm() Return the key algorithm associated with this signature.
long	getKeyID() Return the id of the key that created the signature.
byte[]	getSignature()
byte[]	getSignatureTrailer()
int	getSignatureType()
PGPSignatureSubpacketVector	getUnhashedSubPackets()
int	getVersion() Return the OpenPGP version number for this signature.
boolean	hasSubpackets() Return true if the signature has either hashed or unhashed subpackets.
void	init(PGPContentVerifierBuilderProvider verifierBuilderProvider, PGPPublicKey pubKey)
boolean	isCertification() Return true if this signature represents a certification.
static boolean	isCertification(int signatureType) Return true if the passed in signature type represents a certification, false if the signature type is not.
void	update(byte b)
void	update(byte[] bytes)
void	update(byte[] bytes, int off, int length)
boolean	verify()
boolean	verifyCertification(byte[] rawID, PGPPublicKey key) Verify the signature as certifying the passed in public key as associated with the passed in rawID.
boolean	verifyCertification(PGPPublicKey pubKey) Verify a key certification, such as a revocation, for the passed in key.
boolean	verifyCertification(PGPPublicKey masterKey, PGPPublicKey pubKey) Verify a certification for the passed in key against the passed in master key.
boolean	verifyCertification(PGPUserAttributeSubpacketVector userAttributes, PGPPublicKey key) Verify the signature as certifying the passed in public key as associated with the passed in user attributes.
boolean	verifyCertification(java.lang.String id, PGPPublicKey key) Verify the signature as certifying the passed in public key as associated with the passed in id.

Methods inherited from class java.lang.Object

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

Field Detail

BINARY_DOCUMENT

public static final int BINARY_DOCUMENT

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Constant Field Values

CANONICAL_TEXT_DOCUMENT

public static final int CANONICAL_TEXT_DOCUMENT

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Constant Field Values

STAND_ALONE

public static final int STAND_ALONE

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Constant Field Values

DEFAULT_CERTIFICATION

public static final int DEFAULT_CERTIFICATION

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Constant Field Values

NO_CERTIFICATION

public static final int NO_CERTIFICATION

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Constant Field Values

CASUAL_CERTIFICATION

public static final int CASUAL_CERTIFICATION

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Constant Field Values

POSITIVE_CERTIFICATION

public static final int POSITIVE_CERTIFICATION

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Constant Field Values

SUBKEY_BINDING

public static final int SUBKEY_BINDING

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Constant Field Values

PRIMARYKEY_BINDING

public static final int PRIMARYKEY_BINDING

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Constant Field Values

DIRECT_KEY

public static final int DIRECT_KEY

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Constant Field Values

KEY_REVOCATION

public static final int KEY_REVOCATION

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Constant Field Values

SUBKEY_REVOCATION

public static final int SUBKEY_REVOCATION

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Constant Field Values

CERTIFICATION_REVOCATION

public static final int CERTIFICATION_REVOCATION

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Constant Field Values

TIMESTAMP

public static final int TIMESTAMP

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Constant Field Values

Method Detail

getVersion

public int getVersion()

Return the OpenPGP version number for this signature.

Returns:

signature version number.

getKeyAlgorithm

public int getKeyAlgorithm()

Return the key algorithm associated with this signature.

Returns:

signature key algorithm.

getHashAlgorithm

public int getHashAlgorithm()

Return the hash algorithm associated with this signature.

Returns:

signature hash algorithm.

getDigestPrefix

public byte[] getDigestPrefix()

Return the digest prefix of the signature.

Returns:

digest prefix

isCertification

public boolean isCertification()

Return true if this signature represents a certification.

Returns:

true if this signature represents a certification, false otherwise.

init

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

Throws:

PGPException

update

public void update(byte b)

update

public void update(byte[] bytes)

update

public void update(byte[] bytes,
                   int off,
                   int length)

verify

public boolean verify()
               throws PGPException

Throws:

PGPException

verifyCertification

public boolean verifyCertification(PGPUserAttributeSubpacketVector userAttributes,
                                   PGPPublicKey key)
                            throws PGPException

Verify the signature as certifying the passed in public key as associated with the passed in user attributes.

Parameters:

userAttributes - user attributes the key was stored under

key - the key to be verified.

Returns:

true if the signature matches, false otherwise.

Throws:

PGPException

verifyCertification

public boolean verifyCertification(java.lang.String id,
                                   PGPPublicKey key)
                            throws PGPException

Verify the signature as certifying the passed in public key as associated with the passed in id.

Parameters:

id - id the key was stored under

key - the key to be verified.

Returns:

true if the signature matches, false otherwise.

Throws:

PGPException

verifyCertification

public boolean verifyCertification(byte[] rawID,
                                   PGPPublicKey key)
                            throws PGPException

Verify the signature as certifying the passed in public key as associated with the passed in rawID.

Parameters:

rawID - id the key was stored under in its raw byte form.

key - the key to be verified.

Returns:

true if the signature matches, false otherwise.

Throws:

PGPException

verifyCertification

public boolean verifyCertification(PGPPublicKey masterKey,
                                   PGPPublicKey pubKey)
                            throws PGPException

Verify a certification for the passed in key against the passed in master key.

Parameters:

masterKey - the key we are verifying against.

pubKey - the key we are verifying.

Returns:

true if the certification is valid, false otherwise.

Throws:

PGPException

verifyCertification

public boolean verifyCertification(PGPPublicKey pubKey)
                            throws PGPException

Verify a key certification, such as a revocation, for the passed in key.

Parameters:

pubKey - the key we are checking.

Returns:

true if the certification is valid, false otherwise.

Throws:

PGPException

getSignatureType

public int getSignatureType()

getKeyID

public long getKeyID()

Return the id of the key that created the signature.

Returns:

keyID of the signatures corresponding key.

getCreationTime

public java.util.Date getCreationTime()

Return the creation time of the signature.

Returns:

the signature creation time.

getSignatureTrailer

public byte[] getSignatureTrailer()

hasSubpackets

public boolean hasSubpackets()

Return true if the signature has either hashed or unhashed subpackets.

Returns:

true if either hashed or unhashed subpackets are present, false otherwise.

getHashedSubPackets

public PGPSignatureSubpacketVector getHashedSubPackets()

getUnhashedSubPackets

public PGPSignatureSubpacketVector getUnhashedSubPackets()

getSignature

public byte[] getSignature()
                    throws PGPException

Throws:

PGPException

getEncoded

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

Throws:

java.io.IOException

getEncoded

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

Return an encoding of the signature, with trust packets stripped out if forTransfer is true.

Parameters:

forTransfer - if the purpose of encoding is to send key to other users.

Returns:

a encoded byte array representing the key.

Throws:

java.io.IOException - in case of encoding error.

encode

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

Throws:

java.io.IOException

encode

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

Encode the signature to outStream, with trust packets stripped out if forTransfer is true.

Parameters:

outStream - stream to write the key encoding to.

forTransfer - if the purpose of encoding is to send key to other users.

Throws:

java.io.IOException - in case of encoding error.

isCertification

public static boolean isCertification(int signatureType)

Return true if the passed in signature type represents a certification, false if the signature type is not.

Parameters:

signatureType -

Returns:

true if signatureType is a certification, false otherwise.