crypto
Class Signatures

java.lang.Object
  crypto.Signatures

public class Signatures

extends java.lang.Object

Provides methods to digitally sign and verify signatures

Author:

cooperse

Constructor Summary

Signatures()

Method Summary

static byte[]	generateDigest(byte[] data) Generates a SHA1 message digest hash
static byte[]	sign(java.security.PrivateKey key, byte[] data) Digitally signs the given data using the given KeyPair's private key
static boolean	verify(java.security.PublicKey key, byte[] data, byte[] signed) Verifies the signature on the given data using the given KeyPair

Methods inherited from class java.lang.Object

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

Constructor Detail

Signatures

public Signatures()

Method Detail

sign

public static byte[] sign(java.security.PrivateKey key,
                          byte[] data)

Digitally signs the given data using the given KeyPair's private key

Parameters:

key - The sender's private key

data - The data to be signed

Returns:

A byte[] containing the signed data

verify

public static boolean verify(java.security.PublicKey key,
                             byte[] data,
                             byte[] signed)

Verifies the signature on the given data using the given KeyPair

Parameters:

key - The sender's public key

data - The unsigned data

signed - The signature

Returns:

True or false depending on whether the data verifies

generateDigest

public static byte[] generateDigest(byte[] data)

Generates a SHA1 message digest hash

Parameters:

data - The byte[] to hash

Returns:

The mesage digest