com.websina.license
Class SignatureUtil

java.lang.Object
  com.websina.license.SignatureUtil

public class SignatureUtil

extends java.lang.Object

This is a utility class for sign and verify the signature.

Since:

1.0

Method Summary

static java.lang.String	sign(java.lang.String data, byte[] encodedPrivateKey) This method creates the signature based on the license data and the private key.
static boolean	verify(java.lang.String data, byte[] signature, byte[] encodedPublicKey) This method validate license data based on the signature and the public key.

Methods inherited from class java.lang.Object

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

Method Detail

sign

public static java.lang.String sign(java.lang.String data,
                                    byte[] encodedPrivateKey)
                             throws java.security.GeneralSecurityException

This method creates the signature based on the license data and the private key. It is called by the LicenseTool to create the license.

Parameters:

data - the license data.

encodedPrivateKey - the private key.

Returns:

the encoded signature.

Throws:

java.security.GeneralSecurityException

verify

public static boolean verify(java.lang.String data,
                             byte[] signature,
                             byte[] encodedPublicKey)
                      throws java.security.GeneralSecurityException

This method validate license data based on the signature and the public key. It is called by the LicenseManager to validate the license.

Parameters:

data - the license data.

encodedPublicKey - the public key.

Returns:

a boolean whether or the license is valid.

Throws:

java.security.GeneralSecurityException