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## cryptix.message.stream
Class SignedMessageOutputStream

    java.lang.Object
      java.io.OutputStream
          cryptix.message.stream.MessageOutputStream
              cryptix.message.stream.SignedMessageOutputStream

public final class SignedMessageOutputStream
extends MessageOutputStream

A stream that adds signs and appends the signature to another stream.

Version:
  $Revision: 1.1 $
Author:
  Edwin Woudt

Field Summary

Fields inherited from class cryptix.message.stream.MessageOutputStream
`spi`

Constructor Summary
`protected` | `SignedMessageOutputStream(MessageOutputStreamSpi spi, java.security.Provider provider, java.lang.String format)` Create a new SignedMessageOutputStream object containing the given SPI object.

Method Summary
`void` | `addSigner(KeyBundle signingkey, char[] passphrase)` Adds a signer from a keybundle, decrypting it with the given passphrase.
`void` | `addSigner(java.security.PrivateKey signingkey)` Adds a signer
`static SignedMessageOutputStream` | `getInstance(java.lang.String format)` Returns an SignedMessageOutputStream that implements the given format.
`static SignedMessageOutputStream` | `getInstance(java.lang.String format, java.security.Provider provider)` Returns an SignedMessageOutputStream from the given provider that implements the given format.
`static SignedMessageOutputStream` | `getInstance(java.lang.String format, java.lang.String provider)` Returns an SignedMessageOutputStream from the given provider that implements the given format.

Methods inherited from class cryptix.message.stream.MessageOutputStream
`close, flush, getFormat, getProvider, getSpi, init, setAttribute, write, write, write`

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

Constructor Detail

### SignedMessageOutputStream

    protected SignedMessageOutputStream(MessageOutputStreamSpi spi,
                                        java.security.Provider provider,
                                        java.lang.String format)

  Create a new SignedMessageOutputStream object containing the given SPI object.

Method Detail

### getInstance

    public static SignedMessageOutputStream getInstance(java.lang.String format)
                                                 throws java.security.NoSuchAlgorithmException

  Returns an SignedMessageOutputStream that implements the given format.

  Throws:
    `java.security.NoSuchAlgorithmException`

### getInstance

    public static SignedMessageOutputStream getInstance(java.lang.String format,
                                                        java.lang.String provider)
                                                 throws java.security.NoSuchAlgorithmException,
                                                        java.security.NoSuchProviderException

  Returns an SignedMessageOutputStream from the given provider that implements the given format.

  Throws:
    `java.security.NoSuchAlgorithmException`
    `java.security.NoSuchProviderException`

### getInstance

    public static SignedMessageOutputStream getInstance(java.lang.String format,
                                                        java.security.Provider provider)
                                                 throws java.security.NoSuchAlgorithmException

  Returns an SignedMessageOutputStream from the given provider that implements the given format.

  Throws:
    `java.security.NoSuchAlgorithmException`

### addSigner

    public final void addSigner(java.security.PrivateKey signingkey)
                         throws java.lang.IllegalStateException,
                                java.io.IOException,
                                MessageStreamException

  Adds a signer

  Throws:
    `InvalidStateException` - if this message has not been initialized properly or if data has already been streamed
    `java.io.IOException` - on a general IOException that is not format specific.
    `MessageStreamException` - on a variety of format specific problems.
    `java.lang.IllegalStateException`

### addSigner

    public final void addSigner(KeyBundle signingkey,
                                char[] passphrase)
                         throws java.lang.IllegalStateException,
                                java.io.IOException,
                                MessageStreamException,
                                java.security.UnrecoverableKeyException

  Adds a signer from a keybundle, decrypting it with the given passphrase.

  Throws:
    `InvalidStateException` - if this message has not been initialized properly or if data has already been streamed
    `java.io.IOException` - on a general IOException that is not format specific.
    `MessageStreamException` - on a variety of format specific problems.
    `java.security.UnrecoverableKeyException` - if the private key cannot be retrieved from the keybundle (for example because of an incorrect passphrase).
    `java.lang.IllegalStateException`

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Copyright (C) 1999-2003 The Cryptix Foundation Ltd.