org.logi.crypto.io
Class HashOutputStream

java.lang.Object
  |
  +--java.io.OutputStream
        |
        +--java.io.FilterOutputStream
              |
              +--org.logi.crypto.io.HashOutputStream

public class HashOutputStream

extends java.io.FilterOutputStream

This OutputStream hashes everything written to it and then passes it to an underlying OutputStream. The hash can be retrieved by calling getFingerprint().

Version:

1.0.6

Author:

Logi Ragnarsson (logir@logi.org)

See Also:

HashInputStream

Constructor Summary

HashOutputStream(java.io.OutputStream out)
Creates a new HashOutputStream around out.

HashOutputStream(java.io.OutputStream out, HashState hashState)
Creates a new HashOutputStream around out.

Method Summary

void	close() Closes this output stream and releases any system resources associated with this stream.
void	flush() Flushes this output stream and forces any buffered output bytes to be written out to the stream.
Fingerprint	getFingerprint() Return a fingerprint of all data written so far.
void	write(byte[] buf, int off, int len) Writes len bytes from the specified byte array starting at offset off to this output stream.
void	write(int b) Writes the specified byte to this output stream.

Methods inherited from class java.io.FilterOutputStream

write

Methods inherited from class java.lang.Object

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

Constructor Detail

HashOutputStream

public HashOutputStream(java.io.OutputStream out,
                        HashState hashState)

Creates a new HashOutputStream around out. hashState will be used to calculate fingerprints.

HashOutputStream

public HashOutputStream(java.io.OutputStream out)

Creates a new HashOutputStream around out. A new SHA1State object will be used to calculate fingerprints.

See Also:

SHA1State

Method Detail

getFingerprint

public Fingerprint getFingerprint()

Return a fingerprint of all data written so far.

write

public void write(int b)
           throws java.io.IOException

Writes the specified byte to this output stream.

Overrides:

write in class java.io.FilterOutputStream

write

public void write(byte[] buf,
                  int off,
                  int len)
           throws java.io.IOException

Writes len bytes from the specified byte array starting at offset off to this output stream.

Overrides:

write in class java.io.FilterOutputStream

Throws:

java.io.IOException - if there is a problem iwth the underlying stream or the key fails to sign the fingerprint.

flush

public void flush()
           throws java.io.IOException

Flushes this output stream and forces any buffered output bytes to be written out to the stream.

Overrides:

flush in class java.io.FilterOutputStream

close

public void close()
           throws java.io.IOException

Closes this output stream and releases any system resources associated with this stream.

Overrides:

close in class java.io.FilterOutputStream

Throws:

java.io.IOException - if there is a problem with the underlying stream or the key fails to sign the fingerprint.