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().
- 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 |
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
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.
- Throws:
- java.io.IOException - if there is a problem iwth the underlying stream
or the key fails to sign the fingerprint.
- Overrides:
- write in class java.io.FilterOutputStream
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.
- Throws:
- java.io.IOException - if there is a problem with the underlying stream
or the key fails to sign the fingerprint.
- Overrides:
- close in class java.io.FilterOutputStream
Copyright 1997-2000 Logi Ragnarsson