net.yacy.utils

Class CryptoLib

java.lang.Object

net.yacy.utils.CryptoLib

public class CryptoLib
extends java.lang.Object

Tool functions to sign and verify files and generate keys Start with "java -cp classes de.anomic.tools.CryptoLib --help" from main folder

Author:

flori

Field Summary

Fields

Modifier and Type	Field and Description
static java.lang.String	algorithm
static int	bitkey
private static java.lang.String	HELP
private java.security.KeyFactory	keyFact
private java.security.Signature	sign
static java.lang.String	signAlgorithm

Constructor Summary

Constructors

Constructor and Description
CryptoLib()

Method Summary

Methods

Modifier and Type	Method and Description
java.security.KeyPair	genKeyPair()
byte[]	getBytesOfPrivateKey(java.security.PrivateKey privKey)
byte[]	getBytesOfPublicKey(java.security.PublicKey pubKey)
java.security.PrivateKey	getPrivateKeyFromBytes(byte[] keyBuffer)
java.security.PublicKey	getPublicKeyFromBytes(byte[] keyBuffer)
byte[]	getSignature(java.security.PrivateKey privKey, java.io.InputStream dataStream)
static void	main(java.lang.String[] args)
boolean	verifySignature(java.security.PublicKey pubKey, java.io.InputStream dataStream, byte[] signBuffer)

Methods inherited from class java.lang.Object

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

Field Detail

HELP

private static final java.lang.String HELP

See Also:

Constant Field Values

algorithm

public static final java.lang.String algorithm

See Also:

Constant Field Values

bitkey

public static final int bitkey

See Also:

Constant Field Values

signAlgorithm

public static final java.lang.String signAlgorithm

See Also:

Constant Field Values

keyFact

private final java.security.KeyFactory keyFact

sign

private final java.security.Signature sign

Constructor Detail

CryptoLib

public CryptoLib()
          throws java.security.NoSuchAlgorithmException

Throws:

java.security.NoSuchAlgorithmException

Method Detail

getPrivateKeyFromBytes

public java.security.PrivateKey getPrivateKeyFromBytes(byte[] keyBuffer)
                                                throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

getPublicKeyFromBytes

public java.security.PublicKey getPublicKeyFromBytes(byte[] keyBuffer)
                                              throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

getBytesOfPrivateKey

public byte[] getBytesOfPrivateKey(java.security.PrivateKey privKey)
                            throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

getBytesOfPublicKey

public byte[] getBytesOfPublicKey(java.security.PublicKey pubKey)
                           throws java.security.spec.InvalidKeySpecException

Throws:

java.security.spec.InvalidKeySpecException

getSignature

public byte[] getSignature(java.security.PrivateKey privKey,
                  java.io.InputStream dataStream)
                    throws java.security.InvalidKeyException,
                           java.security.SignatureException,
                           java.io.IOException

Throws:

java.security.InvalidKeyException

java.security.SignatureException

java.io.IOException

verifySignature

public boolean verifySignature(java.security.PublicKey pubKey,
                      java.io.InputStream dataStream,
                      byte[] signBuffer)
                        throws java.security.InvalidKeyException,
                               java.security.SignatureException,
                               java.io.IOException

Throws:

java.security.InvalidKeyException

java.security.SignatureException

java.io.IOException

genKeyPair

public java.security.KeyPair genKeyPair()
                                 throws java.security.NoSuchAlgorithmException

Throws:

java.security.NoSuchAlgorithmException

main

public static void main(java.lang.String[] args)