org.cryptonode.jncryptor
Class AES256JNCryptorOutputStream

java.lang.Object
  java.io.OutputStream
      org.cryptonode.jncryptor.AES256JNCryptorOutputStream

All Implemented Interfaces:

Closeable, Flushable

public class AES256JNCryptorOutputStream
extends OutputStream

Writes RNCryptor-format (version 3) data in a stream fashion. The stream must be closed to finish writing the data and output the HMAC value.

Since:

1.1.0

Constructor Summary

AES256JNCryptorOutputStream(OutputStream out, char[] password)
Creates an output stream for password-encrypted data.

AES256JNCryptorOutputStream(OutputStream out, char[] password, int iterations)
Creates an output stream for password-encrypted data, using a specific number of PBKDF iterations.

AES256JNCryptorOutputStream(OutputStream out, SecretKey encryptionKey, SecretKey hmacKey)
Creates an output stream for key-encrypted data.

Method Summary

void	close() Closes the stream.
void	write(byte[] b, int off, int len) Writes bytes to the encrypted output stream.
void	write(int b) Writes one byte to the encrypted output stream.

Methods inherited from class java.io.OutputStream

flush, write

Methods inherited from class java.lang.Object

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

Constructor Detail

AES256JNCryptorOutputStream

public AES256JNCryptorOutputStream(OutputStream out,
                                   SecretKey encryptionKey,
                                   SecretKey hmacKey)
                            throws CryptorException

Creates an output stream for key-encrypted data.

Parameters:

out - the OutputStream to write the JNCryptor data to

encryptionKey - the key to encrypt with

hmacKey - the key to calculate the HMAC with

Throws:

CryptorException

AES256JNCryptorOutputStream

public AES256JNCryptorOutputStream(OutputStream out,
                                   char[] password,
                                   int iterations)
                            throws CryptorException

Creates an output stream for password-encrypted data, using a specific number of PBKDF iterations.

Parameters:

out - the OutputStream to write the JNCryptor data to

password - the password

iterations - the number of PBKDF iterations to perform

Throws:

CryptorException

AES256JNCryptorOutputStream

public AES256JNCryptorOutputStream(OutputStream out,
                                   char[] password)
                            throws CryptorException

Creates an output stream for password-encrypted data.

Parameters:

out - the OutputStream to write the JNCryptor data to

password - the password

Throws:

CryptorException

Method Detail

write

public void write(int b)
           throws IOException

Writes one byte to the encrypted output stream.

Specified by:

write in class OutputStream

Parameters:

b - the byte to write

Throws:

IOException - if an I/O error occurs

write

public void write(byte[] b,
                  int off,
                  int len)
           throws IOException

Writes bytes to the encrypted output stream.

Overrides:

write in class OutputStream

Parameters:

b - a buffer of bytes to write

off - the offset into the buffer

len - the number of bytes to write (starting from the offset)

Throws:

IOException - if an I/O error occurs

close

public void close()
           throws IOException

Closes the stream. This causes the HMAC calculation to be concluded and written to the output.

Specified by:

close in interface Closeable

Overrides:

close in class OutputStream

Throws:

IOException - if an I/O error occurs