net.jradius.tls

类 TlsMac

java.lang.Object

net.jradius.tls.TlsMac

public class TlsMac
extends Object

A generic TLS MAC implementation, which can be used with any kind of Digest to act as an HMAC.

构造器概要

构造器

限定符	构造器和说明
protected	TlsMac(org.bouncycastle.crypto.Digest digest, byte[] key_block, int offset, int len) Generate a new instance of an TlsMac.

方法概要

方法

限定符和类型	方法和说明
protected byte[]	calculateMac(short type, byte[] message, int offset, int len) Calculate the mac for some given data.
protected int	getSize()

从类继承的方法 java.lang.Object

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

构造器详细资料

TlsMac

protected TlsMac(org.bouncycastle.crypto.Digest digest,
      byte[] key_block,
      int offset,
      int len)

Generate a new instance of an TlsMac.

参数:

digest - The digest to use.

key_block - A byte-array where the key for this mac is located.

offset - The number of bytes to skip, before the key starts in the buffer.

len - The length of the key.

方法详细资料

getSize

protected int getSize()

返回:

The Keysize of the mac.

calculateMac

protected byte[] calculateMac(short type,
                  byte[] message,
                  int offset,
                  int len)

Calculate the mac for some given data.

TlsMac will keep track of the sequence number internally.

参数:

type - The message type of the message.

message - A byte-buffer containing the message.

offset - The number of bytes to skip, before the message starts.

len - The length of the message.

返回:

A new byte-buffer containing the mac value.