Bouncy Castle Cryptography Library 1.45

## org.bouncycastle.openpgp
Class PGPV3SignatureGenerator

    java.lang.Object
      org.bouncycastle.openpgp.PGPV3SignatureGenerator

    public class PGPV3SignatureGenerator

extends java.lang.Object

Generator for old style PGP V3 Signatures.

Constructor Summary
`PGPV3SignatureGenerator(int keyAlgorithm, int hashAlgorithm, java.security.Provider provider)`
`PGPV3SignatureGenerator(int keyAlgorithm, int hashAlgorithm, java.lang.String provider)` Create a generator for the passed in keyAlgorithm and hashAlgorithm codes.

Method Summary
`PGPSignature` `generate()` Return a V3 signature object containing the current signature state.
`PGPOnePassSignature` `generateOnePassVersion(boolean isNested)` Return the one pass header associated with the current signature.
`void` `initSign(int signatureType, PGPPrivateKey key)` Initialise the generator for signing.
`void` `initSign(int signatureType, PGPPrivateKey key, java.security.SecureRandom random)` Initialise the generator for signing.
`void` `update(byte b)`
`void` `update(byte[] b)`
`void` `update(byte[] b, int off, int len)`

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PGPV3SignatureGenerator

    public PGPV3SignatureGenerator(int keyAlgorithm,
                                   int hashAlgorithm,
                                   java.lang.String provider)
                            throws java.security.NoSuchAlgorithmException,
                                   java.security.NoSuchProviderException,
                                   PGPException

  Create a generator for the passed in keyAlgorithm and hashAlgorithm codes.

  Parameters:
    `keyAlgorithm` -
    `hashAlgorithm` -
    `provider` -
  Throws:
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`
    `PGPException`

### PGPV3SignatureGenerator

    public PGPV3SignatureGenerator(int keyAlgorithm,
                                   int hashAlgorithm,
                                   java.security.Provider provider)
                            throws java.security.NoSuchAlgorithmException,
                                   PGPException

Throws:
  `java.security.NoSuchAlgorithmException`
  `PGPException`

Method Detail

### initSign

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

  Initialise the generator for signing.

  Parameters:
    `signatureType` -
    `key` -
  Throws:
    `PGPException`

### initSign

    public void initSign(int signatureType,
                         PGPPrivateKey key,
                         java.security.SecureRandom random)
                  throws PGPException

  Initialise the generator for signing.

  Parameters:
    `signatureType` -
    `key` -
    `random` -
  Throws:
    `PGPException`

### update

    public void update(byte b)
                throws java.security.SignatureException

  Throws:
    `java.security.SignatureException`

### update

    public void update(byte[] b)
                throws java.security.SignatureException

  Throws:
    `java.security.SignatureException`

### update

    public void update(byte[] b,
                       int off,
                       int len)
                throws java.security.SignatureException

  Throws:
    `java.security.SignatureException`

### generateOnePassVersion

    public PGPOnePassSignature generateOnePassVersion(boolean isNested)
                                               throws PGPException

  Return the one pass header associated with the current signature.

  Parameters:
    `isNested` -
  Returns:
    PGPOnePassSignature
  Throws:
    `PGPException`

### generate

    public PGPSignature generate()
                          throws PGPException,
                                 java.security.SignatureException

  Return a V3 signature object containing the current signature state.

  Returns:
    PGPSignature
  Throws:
    `PGPException`
    `java.security.SignatureException`

Bouncy Castle Cryptography Library 1.45