com.google.crypto.tink.mac.internal

Class LegacyFullMac

java.lang.Object

com.google.crypto.tink.mac.internal.LegacyFullMac

All Implemented Interfaces:

Mac

public final class LegacyFullMac
extends Object
implements Mac

Takes an arbitrary raw Mac and makes it a full primitive. This is a class that helps us transition onto the new Keys and Configurations interface, by bringing potential user-defined primitives to a common denominator with our primitives over which we have control.

Method Summary

Modifier and Type	Method and Description
byte[]	computeMac(byte[] data) Computes message authentication code (MAC) for data.
static Mac	create(LegacyProtoKey key) This method covers the cases where users created their own mac/key classes.
void	verifyMac(byte[] mac, byte[] data) Verifies whether mac is a correct authentication code (MAC) for data.

Methods inherited from class java.lang.Object

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

Method Detail

create

public static Mac create(LegacyProtoKey key)
                  throws GeneralSecurityException

This method covers the cases where users created their own mac/key classes.

Throws:

GeneralSecurityException

computeMac

public byte[] computeMac(byte[] data)
                  throws GeneralSecurityException

Description copied from interface: Mac

Computes message authentication code (MAC) for data.

Specified by:

computeMac in interface Mac

Returns:

MAC value

Throws:

GeneralSecurityException

verifyMac

public void verifyMac(byte[] mac,
                      byte[] data)
               throws GeneralSecurityException

Description copied from interface: Mac

Verifies whether mac is a correct authentication code (MAC) for data.

Specified by:

verifyMac in interface Mac

Throws:

GeneralSecurityException - if mac is not a correct MAC for data