org.telegram.mtproto.secure

Class CryptoUtils

java.lang.Object

org.telegram.mtproto.secure.CryptoUtils

public class CryptoUtils
extends Object

Author: Korshakov Stepan Created: 18.07.13 3:54

Constructor Summary

Constructors

Constructor and Description
CryptoUtils()

Method Summary

Modifier and Type	Method and Description
static byte[]	AES256IGEDecrypt(byte[] src, byte[] iv, byte[] key)
static void	AES256IGEDecrypt(File src, File dest, byte[] iv, byte[] key)
static void	AES256IGEDecryptBig(byte[] src, byte[] dest, int len, byte[] iv, byte[] key)
static byte[]	AES256IGEEncrypt(byte[] src, byte[] iv, byte[] key)
static void	AES256IGEEncrypt(File src, File dest, byte[] iv, byte[] key)
static byte[]	align(byte[] src, int factor)
static byte[]	alignKeyZero(byte[] src, int size)
static boolean	arrayEq(byte[] a, byte[] b)
static byte[]	concat(byte[]... v)
static byte[]	fromBigInt(BigInteger val)
static boolean	isZero(byte[] src)
static BigInteger	loadBigInt(byte[] data)
static String	MD5(byte[] src)
static String	MD5(File file)
static String	MD5(RandomAccessFile randomAccessFile)
static byte[]	MD5Raw(byte[] src)
static byte[]	RSA(byte[] src, BigInteger key, BigInteger exponent)
static void	setAESImplementation(AESImplementation implementation)
static byte[]	SHA1(byte[]... src1)
static byte[]	SHA1(byte[] src)
static byte[]	SHA1(InputStream in)
static byte[]	SHA1(String fileName)
static byte[]	substring(byte[] src, int start, int len)
static String	ToHex(byte[] src)
static byte[]	xor(byte[] a, byte[] b)

Methods inherited from class java.lang.Object

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

Constructor Detail

CryptoUtils

public CryptoUtils()

Method Detail

setAESImplementation

public static void setAESImplementation(AESImplementation implementation)

RSA

public static byte[] RSA(byte[] src,
                         BigInteger key,
                         BigInteger exponent)

AES256IGEDecryptBig

public static void AES256IGEDecryptBig(byte[] src,
                                       byte[] dest,
                                       int len,
                                       byte[] iv,
                                       byte[] key)

AES256IGEDecrypt

public static byte[] AES256IGEDecrypt(byte[] src,
                                      byte[] iv,
                                      byte[] key)

AES256IGEDecrypt

public static void AES256IGEDecrypt(File src,
                                    File dest,
                                    byte[] iv,
                                    byte[] key)
                             throws IOException

Throws:

IOException

AES256IGEEncrypt

public static void AES256IGEEncrypt(File src,
                                    File dest,
                                    byte[] iv,
                                    byte[] key)
                             throws IOException

Throws:

IOException

AES256IGEEncrypt

public static byte[] AES256IGEEncrypt(byte[] src,
                                      byte[] iv,
                                      byte[] key)

MD5

public static String MD5(byte[] src)

MD5

public static String MD5(RandomAccessFile randomAccessFile)

MD5

public static String MD5(File file)

MD5Raw

public static byte[] MD5Raw(byte[] src)

ToHex

public static String ToHex(byte[] src)

SHA1

public static byte[] SHA1(InputStream in)
                   throws IOException

Throws:

IOException

SHA1

public static byte[] SHA1(String fileName)
                   throws IOException

Throws:

IOException

SHA1

public static byte[] SHA1(byte[] src)

SHA1

public static byte[] SHA1(byte[]... src1)

arrayEq

public static boolean arrayEq(byte[] a,
                              byte[] b)

concat

public static byte[] concat(byte[]... v)

substring

public static byte[] substring(byte[] src,
                               int start,
                               int len)

align

public static byte[] align(byte[] src,
                           int factor)

alignKeyZero

public static byte[] alignKeyZero(byte[] src,
                                  int size)

xor

public static byte[] xor(byte[] a,
                         byte[] b)

loadBigInt

public static BigInteger loadBigInt(byte[] data)

fromBigInt

public static byte[] fromBigInt(BigInteger val)

isZero

public static boolean isZero(byte[] src)