net.sourceforge.blowfishj

Class BlowfishOutputStream

java.lang.Object

java.io.OutputStream

net.sourceforge.blowfishj.BlowfishOutputStream

All Implemented Interfaces:

java.io.Closeable, java.io.Flushable, java.lang.AutoCloseable

public class BlowfishOutputStream
extends java.io.OutputStream

An output stream that encrypts data using the Blowfish algorithm in CBC mode, padded with PCKS7. Provided key material is hashed to a 160bit final key using SHA-1.

Author:

original version by Dale Anson

Constructor Summary

Constructors

Constructor and Description
BlowfishOutputStream(byte[] key, int nOfs, int nLen, java.io.OutputStream os) Default constructor.
BlowfishOutputStream(java.lang.String sPassPhrase, java.io.OutputStream os) Deprecated. due to the restrictions in usage and the discarding of some original key material it is highly recommended not to use it anymore

Method Summary

Modifier and Type	Method and Description
void	close()
void	flush()
void	write(int nByte)

Methods inherited from class java.io.OutputStream

write, write

Methods inherited from class java.lang.Object

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

Constructor Detail

BlowfishOutputStream

public BlowfishOutputStream(byte[] key,
                            int nOfs,
                            int nLen,
                            java.io.OutputStream os)
                     throws java.io.IOException

Default constructor. The key material gets transformed to a final 160bit key using SHA-1.

Parameters:

key - key buffer

nOfs - where the key material starts

nLen - size of the key material (in bytes)

os - the output stream to which bytes will be written

Throws:

java.io.IOException - if the IV couldn't be written

BlowfishOutputStream

public BlowfishOutputStream(java.lang.String sPassPhrase,
                            java.io.OutputStream os)
                     throws java.io.IOException

Deprecated. due to the restrictions in usage and the discarding of some original key material it is highly recommended not to use it anymore

Constructor using a string. The ASCII character values of the string are hashed with SHA-1, the digest is used as the final key.

Parameters:

sPassPhrase - the passphrase

os - the output stream to which bytes will be written

Throws:

java.io.IOException - if the IV couldn't be written

Method Detail

write

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

Specified by:

write in class java.io.OutputStream

Throws:

java.io.IOException

See Also:

OutputStream.write(int)

close

public void close()
           throws java.io.IOException

Specified by:

close in interface java.io.Closeable

Specified by:

close in interface java.lang.AutoCloseable

Overrides:

close in class java.io.OutputStream

Throws:

java.io.IOException

See Also:

InputStream.close()

flush

public void flush()
           throws java.io.IOException

Specified by:

flush in interface java.io.Flushable

Overrides:

flush in class java.io.OutputStream

Throws:

java.io.IOException

See Also:

OutputStream.flush()