All Packages Class Hierarchy This Package Previous Next Index
Class is.hi.logir.cryptonite.EncryptStream
java.lang.Object
|
+----java.io.OutputStream
|
+----java.io.FilterOutputStream
|
+----is.hi.logir.cryptonite.EncryptStream
- public class EncryptStream
- extends FilterOutputStream
This OutputStream encrypts everything written to it using the key suggested
by the key-exchange object passed to the constructor and in the mode passed
to the constructor.
Beware that up to one byte less than a whole block of garbage may be
appended to the data when flush is called, such as when the stream is closed.
- Author:
- Logi Ragnarsson
(logir@hi.is)
- See Also:
- DecryptStream
-
EncryptStream(OutputStream, NoninterKeyExClient, EncryptMode)
- Create a new EncryptStream which writes encrypted data to
out
.
-
flush()
- Flushes this output stream and forces any buffered output bytes to
be written out to the stream.
-
write(byte[], int, int)
- Writes len bytes from the specified byte array starting at offset
off to this output stream.
-
write(int)
- Writes the specified byte to this output stream.
EncryptStream
public EncryptStream(OutputStream out,
NoninterKeyExClient kex,
EncryptMode emode) throws ProtocolException, IOException
- Create a new EncryptStream which writes encrypted data to
out
. The emode
object will be used
for encryption and if kex
is not null
it will be used to inform the appropriate reader about what key
to use for decryption.
if kex
is not null
, then the key
returned by its sessionKey()
method will be used in
the emode
object. Otherwise, emode
is
assumed to contain the proper key.
The data output can be read by a DecryptStream object which has
been initialized with the DecryptMode object which corresponds to
emode
and the NoninteractiveKeyExchangeServer object
which corresponds kex
, or null
if
kex
is null
.
- Throws: ProtocolException
- if a problem arises with the key-exchange protocol.
- Throws: IOException
- if problems arise with the underlying OutputStream.
write
public synchronized void write(int b) throws IOException
- Writes the specified byte to this output stream.
- Overrides:
- write in class FilterOutputStream
write
public synchronized void write(byte buf[],
int off,
int len) throws IOException
- Writes len bytes from the specified byte array starting at offset
off to this output stream.
- Overrides:
- write in class FilterOutputStream
flush
public synchronized void flush() throws IOException
- Flushes this output stream and forces any buffered output bytes to
be written out to the stream. If the number of bytes written is not
a multiple of the plainBlockSize of the Key used for encryption, up
to one byte less than a whole block of garbage may be appended to
the data when flush is called.
- Overrides:
- flush in class FilterOutputStream
All Packages Class Hierarchy This Package Previous Next Index