com.nimbusds.jose.crypto.impl

Class DeflateHelper

java.lang.Object

com.nimbusds.jose.crypto.impl.DeflateHelper

@ThreadSafe
public class DeflateHelper
extends Object

Deflate (RFC 1951) helper methods, intended for use by JWE encrypters and decrypters. This class is thread-safe.

Version:

2014-07-08

Author:

Vladimir Dzhuvinov

Constructor Summary

Constructors

Constructor and Description
DeflateHelper()

Method Summary

Modifier and Type	Method and Description
static byte[]	applyCompression(JWEHeader jweHeader, byte[] bytes) Applies compression to the specified plain text if requested.
static byte[]	applyDecompression(JWEHeader jweHeader, byte[] bytes) Applies decompression to the specified plain text if requested.

Methods inherited from class java.lang.Object

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

Constructor Detail

DeflateHelper

public DeflateHelper()

Method Detail

applyCompression

public static byte[] applyCompression(JWEHeader jweHeader,
                                      byte[] bytes)
                               throws JOSEException

Applies compression to the specified plain text if requested.

Parameters:

jweHeader - The JWE header. Must not be null.

bytes - The plain text bytes. Must not be null.

Returns:

The bytes to encrypt.

Throws:

JOSEException - If compression failed or the requested compression algorithm is not supported.

applyDecompression

public static byte[] applyDecompression(JWEHeader jweHeader,
                                        byte[] bytes)
                                 throws JOSEException

Applies decompression to the specified plain text if requested.

Parameters:

jweHeader - The JWE header. Must not be null.

bytes - The plain text bytes. Must not be null.

Returns:

The output bytes, decompressed if requested.

Throws:

JOSEException - If decompression failed or the requested compression algorithm is not supported.