de.adesso.softauthn.counter

Class GlobalSignatureCounter

java.lang.Object

de.adesso.softauthn.counter.GlobalSignatureCounter

All Implemented Interfaces:

SignatureCounter

public class GlobalSignatureCounter
extends java.lang.Object
implements SignatureCounter

A signature counter implementation that counts the total number of performed signatures rather than maintaining a separate count for each known credential.

Constructor Summary

Constructors

Constructor and Description
GlobalSignatureCounter() Creates a global signature counter with the initial value 0 and an increment of 1.
GlobalSignatureCounter(int initialValue, int increment) Creates a global signature counter with the given initial value and increment.

Method Summary

Modifier and Type	Method and Description
int	increment(com.yubico.webauthn.data.ByteArray credentialId) Increment the signature count associated with the given credential ID.
int	initialize(com.yubico.webauthn.data.ByteArray credentialId) Initialize the signature count for a given credential ID.

Methods inherited from class java.lang.Object

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

Constructor Detail

GlobalSignatureCounter

public GlobalSignatureCounter()

Creates a global signature counter with the initial value 0 and an increment of 1.

GlobalSignatureCounter

public GlobalSignatureCounter(int initialValue,
                              int increment)

Creates a global signature counter with the given initial value and increment.

Parameters:

initialValue - The initial total amount of signatures.

increment - The amount added to the count when increment(ByteArray) is called.

Method Detail

increment

public int increment(com.yubico.webauthn.data.ByteArray credentialId)

Description copied from interface: SignatureCounter

Increment the signature count associated with the given credential ID.

Note: This does not imply that there must be a one-to-one mapping between credential IDs and signature counts.

SignatureCounter.initialize(ByteArray) must have been called for the given credential ID before invoking this method for the first time.

Specified by:

increment in interface SignatureCounter

Parameters:

credentialId - The credential ID that was just used to sign something.

Returns:

the new signature count.

initialize

public int initialize(com.yubico.webauthn.data.ByteArray credentialId)

Description copied from interface: SignatureCounter

Initialize the signature count for a given credential ID.

What Initialization entails exactly is implementation-defined.

Specified by:

initialize in interface SignatureCounter

Parameters:

credentialId - The credential ID.

Returns:

the initial signature count for the credential ID.