Package de.sephirothj.spring.security.ltpa2

Klasse Ltpa2Utils

java.lang.Object

de.sephirothj.spring.security.ltpa2.Ltpa2Utils

public class Ltpa2Utils
extends Object

Utility class for operations on an LTPA2 token

Autor:

Sephiroth

Konstruktorübersicht

Konstruktoren

Konstruktor	Beschreibung
Ltpa2Utils()

Methodenübersicht

Modifizierer und Typ	Methode	Beschreibung
String	decryptLtpa2Token(String encryptedToken, SecretKey key)	decrypts an base64-encoded LTPA2 token
String	encryptToken(Ltpa2Token token, PrivateKey signerKey, SecretKey key)	create a serialized, signed and encrypted LTPA2 token
boolean	isSignatureValid(String token, PublicKey signerKey)	checks if the signature of the given token is valid
boolean	isTokenExpired(String token)	checks if the given token is expired
Ltpa2Token	makeInstance(String tokenStr)	create a new instance of Ltpa2Token from the given serialized LTPA2 token
String	signToken(String token, PrivateKey key)	signs the given LTPA2 token

Von Klasse geerbte Methoden java.lang.Object

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

Konstruktordetails

Ltpa2Utils

public Ltpa2Utils()

Methodendetails

decryptLtpa2Token

@NonNull
public String decryptLtpa2Token(@NonNull
 String encryptedToken,
 @NonNull
 SecretKey key)
                         throws InvalidLtpa2TokenException

decrypts an base64-encoded LTPA2 token

Parameter:

encryptedToken - the base64-encoded and encrypted token

key - the shared secret key that was used to encrypt encryptedToken

Gibt zurück:

the serialized token

Löst aus:

InvalidLtpa2TokenException - in case something went wrong

makeInstance

@NonNull
public Ltpa2Token makeInstance(@NonNull
 String tokenStr)
                        throws InvalidLtpa2TokenException

create a new instance of Ltpa2Token from the given serialized LTPA2 token

Parameter:

tokenStr - a serialized LTPA2 token (unencrypted)

Gibt zurück:

instance of Ltpa2Token

Löst aus:

InvalidLtpa2TokenException - if the token is malformed

isTokenExpired

public boolean isTokenExpired(@NonNull
 String token)
                       throws InvalidLtpa2TokenException

checks if the given token is expired

Parameter:

token - a serialized LTPA2 token (unencrypted)

Gibt zurück:

whether the given token is expired or not

Löst aus:

InvalidLtpa2TokenException - if the token is malformed

Siehe auch:

• Ltpa2Token.isExpired()

isSignatureValid

public boolean isSignatureValid(@NonNull
 String token,
 @NonNull
 PublicKey signerKey)
                         throws InvalidLtpa2TokenException

checks if the signature of the given token is valid

Parameter:

token - a serialized LTPA2 token (unencrypted)

signerKey - the public key which corresponds to the private key that was used to sign an LTPA2 token

Gibt zurück:

whether the signature for the given token is valid or not

Löst aus:

InvalidLtpa2TokenException - in case an error occured during signature verification

InvalidLtpa2TokenException - if the token is malformed

signToken

@NonNull
public String signToken(@NonNull
 String token,
 @NonNull
 PrivateKey key)
                 throws InvalidLtpa2TokenException

signs the given LTPA2 token

Parameter:

token - a serialized LTPA2 token (unencrypted)

key - the private key for signing the given token

Gibt zurück:

the base64-encoded signature of the token

Löst aus:

InvalidLtpa2TokenException - in case an error occured during signature creation

Siehe auch:

• Ltpa2Token.toString()

encryptToken

@NonNull
public String encryptToken(@NonNull
 Ltpa2Token token,
 @NonNull
 PrivateKey signerKey,
 @NonNull
 SecretKey key)
                    throws InvalidLtpa2TokenException

create a serialized, signed and encrypted LTPA2 token

Parameter:

token - the token

signerKey - the private key for signing the given token

key - the shared secret key for encrypting the given token

Gibt zurück:

serialized, signed and encrypted LTPA2 token

Löst aus:

InvalidLtpa2TokenException - in case an error occured during signature creation

InvalidLtpa2TokenException - in case an error occured during encrypting the token