memetic.crypto
Class RTPCrypt

java.lang.Object
  memetic.crypto.RTPCrypt

public class RTPCrypt
extends java.lang.Object

Performs RTP Encryption using a given encryption standard

Version:

1-1-alpha3

Author:

Andrew G D Rowley

Constructor Summary

RTPCrypt(Crypt crypter)
Creates a new RTPCrypt

Method Summary

int	decryptCtrl(byte[] input, int offset, int length, byte[] output, int outOffset) Decrypts the given RTCP data
int	decryptData(byte[] input, int offset, int length, byte[] output, int outOffset) Decrypts the given RTP data
int	encryptCtrl(byte[] input, int offset, int length, byte[] output, int outOffset) Encrypts the given RTCP data
int	encryptData(byte[] input, int offset, int length, byte[] output, int outOffset) Encrypts the given RTP data
int	getBlockSize()
int	getDecryptOutputSize(int inputSize)
int	getEncryptOutputSize(int inputSize)

Methods inherited from class java.lang.Object

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

Constructor Detail

RTPCrypt

public RTPCrypt(Crypt crypter)

Creates a new RTPCrypt

Parameters:

crypter - The encryption standard to use

Method Detail

encryptCtrl

public int encryptCtrl(byte[] input,
                       int offset,
                       int length,
                       byte[] output,
                       int outOffset)
                throws java.security.InvalidKeyException,
                       javax.crypto.ShortBufferException,
                       javax.crypto.IllegalBlockSizeException,
                       javax.crypto.BadPaddingException,
                       java.security.InvalidAlgorithmParameterException

Encrypts the given RTCP data

Parameters:

input -

offset -

length -

output -

outOffset -

Returns:

The length of the output stored in the output buffer

Throws:

java.security.InvalidAlgorithmParameterException

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

javax.crypto.ShortBufferException

java.security.InvalidKeyException

encryptData

public int encryptData(byte[] input,
                       int offset,
                       int length,
                       byte[] output,
                       int outOffset)
                throws java.security.InvalidKeyException,
                       javax.crypto.ShortBufferException,
                       javax.crypto.IllegalBlockSizeException,
                       javax.crypto.BadPaddingException,
                       java.security.InvalidAlgorithmParameterException

Encrypts the given RTP data

Parameters:

input -

offset -

length -

output -

outOffset -

Returns:

The length of the output stored in the output buffer

Throws:

java.security.InvalidAlgorithmParameterException

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

javax.crypto.ShortBufferException

java.security.InvalidKeyException

decryptCtrl

public int decryptCtrl(byte[] input,
                       int offset,
                       int length,
                       byte[] output,
                       int outOffset)
                throws java.security.InvalidKeyException,
                       javax.crypto.ShortBufferException,
                       javax.crypto.IllegalBlockSizeException,
                       javax.crypto.BadPaddingException,
                       java.security.InvalidAlgorithmParameterException

Decrypts the given RTCP data

Parameters:

input -

offset -

length -

output -

outOffset -

Returns:

The length of the output stored in the output buffer

Throws:

java.security.InvalidAlgorithmParameterException

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

javax.crypto.ShortBufferException

java.security.InvalidKeyException

decryptData

public int decryptData(byte[] input,
                       int offset,
                       int length,
                       byte[] output,
                       int outOffset)
                throws java.security.InvalidKeyException,
                       javax.crypto.ShortBufferException,
                       javax.crypto.IllegalBlockSizeException,
                       javax.crypto.BadPaddingException,
                       java.security.InvalidAlgorithmParameterException

Decrypts the given RTP data

Parameters:

input -

offset -

length -

output -

outOffset -

Returns:

The length of the output stored in the output buffer

Throws:

java.security.InvalidAlgorithmParameterException

javax.crypto.BadPaddingException

javax.crypto.IllegalBlockSizeException

javax.crypto.ShortBufferException

java.security.InvalidKeyException

getEncryptOutputSize

public int getEncryptOutputSize(int inputSize)

See Also:

Crypt.getEncryptOutputSize(int)

getDecryptOutputSize

public int getDecryptOutputSize(int inputSize)

See Also:

Crypt.getDecryptOutputSize(int)

getBlockSize

public int getBlockSize()

See Also:

Crypt.getBlockSize()