org.bouncycastle.openpgp
Class PGPSignatureGenerator

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

public class PGPSignatureGenerator

extends org.bouncycastle.openpgp.PGPDefaultSignatureGenerator

Generator for PGP Signatures.

Field Summary

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

Constructor Summary

PGPSignatureGenerator(PGPContentSignerBuilder contentSignerBuilder)
Deprecated. use PGPSignatureGenerator(PGPContentSignerBuilder, PGPPublicKey) instead.

PGPSignatureGenerator(PGPContentSignerBuilder contentSignerBuilder, PGPPublicKey signingKey)
Create a signature generator built on the passed in contentSignerBuilder.

PGPSignatureGenerator(PGPContentSignerBuilder contentSignerBuilder, PGPPublicKey signingKey, int signatureVersion)

Method Summary

protected void	blockUpdate(byte[] block, int off, int len)
PGPSignature	generate() Return a signature object containing the current signature state.
PGPSignature	generateCertification(PGPPublicKey pubKey) Generate a certification, such as a revocation, for the passed in key.
PGPSignature	generateCertification(PGPPublicKey masterKey, PGPPublicKey pubKey) Generate a certification for the passed in key against the passed in master key.
PGPSignature	generateCertification(PGPUserAttributeSubpacketVector userAttributes, PGPPublicKey pubKey) Generate a certification for the passed in userAttributes
PGPSignature	generateCertification(java.lang.String id, PGPPublicKey pubKey) Generate a certification for the passed in id and key.
PGPOnePassSignature	generateOnePassVersion(boolean isNested) Return the one pass header associated with the current signature.
protected void	getAttributesHash(PGPUserAttributeSubpacketVector userAttributes)
void	init(int signatureType, PGPPrivateKey key) Initialise the generator for signing.
protected void	prepareSignatureSubpackets()
void	setHashedSubpackets(PGPSignatureSubpacketVector hashedPcks) Set the hashed signature subpackets.
void	setUnhashedSubpackets(PGPSignatureSubpacketVector unhashedPcks) Set the unhashed signature subpackets.
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)

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

PGPSignatureGenerator

public PGPSignatureGenerator(PGPContentSignerBuilder contentSignerBuilder)

Deprecated. use PGPSignatureGenerator(PGPContentSignerBuilder, PGPPublicKey) instead.

Create a version 4 signature generator built on the passed in contentSignerBuilder.

Parameters:

contentSignerBuilder - builder to produce PGPContentSigner objects for generating signatures.

PGPSignatureGenerator

public PGPSignatureGenerator(PGPContentSignerBuilder contentSignerBuilder,
                             PGPPublicKey signingKey)

Create a signature generator built on the passed in contentSignerBuilder. The produces signature version will match the version of the passed in signing key.

Parameters:

contentSignerBuilder - builder to produce PGPContentSigner objects for generating signatures

signingKey - signing key

PGPSignatureGenerator

public PGPSignatureGenerator(PGPContentSignerBuilder contentSignerBuilder,
                             PGPPublicKey signingKey,
                             int signatureVersion)

Method Detail

init

public void init(int signatureType,
                 PGPPrivateKey key)
          throws PGPException

Initialise the generator for signing.

Parameters:

signatureType - type of signature

key - private signing key

Throws:

PGPException -

setHashedSubpackets

public void setHashedSubpackets(PGPSignatureSubpacketVector hashedPcks)

Set the hashed signature subpackets. Hashed signature subpackets are covered by the signature.

Parameters:

hashedPcks - hashed signature subpackets

setUnhashedSubpackets

public void setUnhashedSubpackets(PGPSignatureSubpacketVector unhashedPcks)

Set the unhashed signature subpackets. Unhashed signature subpackets are not covered by the signature.

Parameters:

unhashedPcks - unhashed signature subpackets

generateOnePassVersion

public PGPOnePassSignature generateOnePassVersion(boolean isNested)
                                           throws PGPException

Return the one pass header associated with the current signature.

Parameters:

isNested - true if the signature is nested, false otherwise.

Returns:

PGPOnePassSignature

Throws:

PGPException -

generate

public PGPSignature generate()
                      throws PGPException

Return a signature object containing the current signature state.

Returns:

PGPSignature

Throws:

PGPException -

prepareSignatureSubpackets

protected void prepareSignatureSubpackets()
                                   throws PGPException

generateCertification

public PGPSignature generateCertification(java.lang.String id,
                                          PGPPublicKey pubKey)
                                   throws PGPException

Generate a certification for the passed in id and key.

Parameters:

id - the id we are certifying against the public key.

pubKey - the key we are certifying against the id.

Returns:

the certification.

Throws:

PGPException -

generateCertification

public PGPSignature generateCertification(PGPUserAttributeSubpacketVector userAttributes,
                                          PGPPublicKey pubKey)
                                   throws PGPException

Generate a certification for the passed in userAttributes

Parameters:

userAttributes - the id we are certifying against the public key.

pubKey - the key we are certifying against the id.

Returns:

the certification.

Throws:

PGPException -

generateCertification

public PGPSignature generateCertification(PGPPublicKey masterKey,
                                          PGPPublicKey pubKey)
                                   throws PGPException

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

Parameters:

masterKey - the key we are certifying against.

pubKey - the key we are certifying.

Returns:

the certification.

Throws:

PGPException -

generateCertification

public PGPSignature generateCertification(PGPPublicKey pubKey)
                                   throws PGPException

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

Parameters:

pubKey - the key we are certifying.

Returns:

the certification.

Throws:

PGPException -

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