com.yubico.u2f.data.messages.key

Class RawAuthenticateResponse

java.lang.Object

com.yubico.u2f.data.messages.key.RawAuthenticateResponse

public class RawAuthenticateResponse
extends java.lang.Object

The authenticate response produced by the token/key, which is transformed by the client into an AuthenticateResponse and sent to the server.

Field Summary

Fields

Modifier and Type	Field and Description
static byte	USER_PRESENT_FLAG

Constructor Summary

Constructors

Constructor and Description
RawAuthenticateResponse(byte userPresence, long counter, byte[] signature)
RawAuthenticateResponse(byte userPresence, long counter, byte[] signature, Crypto crypto)

Method Summary

Methods

Modifier and Type	Method and Description
void	checkSignature(java.lang.String appId, java.lang.String clientData, byte[] publicKey)
void	checkUserPresence()
boolean	equals(java.lang.Object obj)
static RawAuthenticateResponse	fromBase64(java.lang.String rawDataBase64, Crypto crypto)
long	getCounter() This is the big-endian representation of a counter value that the U2F device increments every time it performs an authentication operation.
byte[]	getSignature() This is a ECDSA signature (on P-256)
byte	getUserPresence() Bit 0 is set to 1, which means that user presence was verified.
int	hashCode()
static byte[]	packBytesToSign(byte[] appIdHash, byte userPresence, long counter, byte[] challengeHash)

Methods inherited from class java.lang.Object

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

Field Detail

USER_PRESENT_FLAG

public static final byte USER_PRESENT_FLAG

See Also:

Constant Field Values

Constructor Detail

RawAuthenticateResponse

public RawAuthenticateResponse(byte userPresence,
                       long counter,
                       byte[] signature)

RawAuthenticateResponse

public RawAuthenticateResponse(byte userPresence,
                       long counter,
                       byte[] signature,
                       Crypto crypto)

Method Detail

fromBase64

public static RawAuthenticateResponse fromBase64(java.lang.String rawDataBase64,
                                 Crypto crypto)

checkSignature

public void checkSignature(java.lang.String appId,
                  java.lang.String clientData,
                  byte[] publicKey)
                    throws U2fException

Throws:

U2fException

packBytesToSign

public static byte[] packBytesToSign(byte[] appIdHash,
                     byte userPresence,
                     long counter,
                     byte[] challengeHash)

getUserPresence

public byte getUserPresence()

Bit 0 is set to 1, which means that user presence was verified. (This version of the protocol doesn't specify a way to request authentication responses without requiring user presence.) A different value of bit 0, as well as bits 1 through 7, are reserved for future use. The values of bit 1 through 7 SHOULD be 0

getCounter

public long getCounter()

This is the big-endian representation of a counter value that the U2F device increments every time it performs an authentication operation.

getSignature

public byte[] getSignature()

This is a ECDSA signature (on P-256)

hashCode

public int hashCode()

Overrides:

hashCode in class java.lang.Object

equals

public boolean equals(java.lang.Object obj)

Overrides:

equals in class java.lang.Object

checkUserPresence

public void checkUserPresence()
                       throws U2fException

Throws:

U2fException