uk.co.thomasc.steamkit.util.crypto

Class CryptoHelper

java.lang.Object

uk.co.thomasc.steamkit.util.crypto.CryptoHelper

public class CryptoHelper
extends Object

Provides Crypto functions used in Steam protocols

Constructor Summary

Constructors

Modifier	Constructor and Description
private	CryptoHelper()

Method Summary

Methods

Modifier and Type	Method and Description
static byte[]	AdlerHash(byte[] input) Performs an Adler32 on the given input
static byte[]	CRCHash(byte[] input) Performs CRC32 on an input byte array using the CrcStandard.Crc32Bit parameters
static byte[]	GenerateRandomBlock(int size) Generate an array of random bytes given the input length
static byte[]	JenkinsHash(byte[] input) Performs the Jenkins hash on an input byte array
static byte[]	SHAHash(byte[] input) Performs an SHA1 hash of an input byte array
static byte[]	SymmetricDecrypt(byte[] input, byte[] key) Decrypts using AES/CBC/PKCS7 with an input byte array and key, using the random IV prepended using AES/ECB/None
static byte[]	SymmetricEncrypt(byte[] input, byte[] key) Performs an encryption using AES/CBC/PKCS7 with an input byte array and key, with a random IV prepended using AES/ECB/None

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptoHelper

private CryptoHelper()

Method Detail

SHAHash

public static byte[] SHAHash(byte[] input)

Performs an SHA1 hash of an input byte array

SymmetricEncrypt

public static byte[] SymmetricEncrypt(byte[] input,
                      byte[] key)

Performs an encryption using AES/CBC/PKCS7 with an input byte array and key, with a random IV prepended using AES/ECB/None

SymmetricDecrypt

public static byte[] SymmetricDecrypt(byte[] input,
                      byte[] key)

Decrypts using AES/CBC/PKCS7 with an input byte array and key, using the random IV prepended using AES/ECB/None

JenkinsHash

public static byte[] JenkinsHash(byte[] input)

Performs the Jenkins hash on an input byte array

CRCHash

public static byte[] CRCHash(byte[] input)

Performs CRC32 on an input byte array using the CrcStandard.Crc32Bit parameters

AdlerHash

public static byte[] AdlerHash(byte[] input)

Performs an Adler32 on the given input

GenerateRandomBlock

public static byte[] GenerateRandomBlock(int size)

Generate an array of random bytes given the input length