org.neuclear.commons.crypto.signers
Class SimpleSigner

java.lang.Object
  org.neuclear.commons.crypto.signers.SimpleSigner

All Implemented Interfaces:

Signer

public final class SimpleSigner
extends java.lang.Object
implements Signer

Simple memory based implementation of Signer. Currently it doesnt even use the passphrase. However it does do a SHA1 digest on the name first.

Field Summary

Fields inherited from interface org.neuclear.commons.crypto.signers.Signer

KEY_DSA, KEY_NONE, KEY_OTHER, KEY_RSA

Constructor Summary

SimpleSigner(java.lang.String file, PassPhraseAgent agent)

Method Summary

void	addKey(java.lang.String name, char[] passphrase, java.security.PrivateKey key) Adds the given key to the store.
void	addKey(java.lang.String name, java.security.PrivateKey key) Adds the given key to the store.
boolean	canSignFor(java.lang.String name) Returns true if the Signer contains a signer for the given name
java.security.PublicKey	generateKey() Creates a new KeyPair, stores the PrivateKey using the base32 sha1 of the public key as it's alias and returns the PublicKey.
java.security.PublicKey	generateKey(java.lang.String alias) Creates a new KeyPair, stores the PrivateKey using the given alias and returns the PublicKey.
protected static java.lang.String	getDigestedName(java.lang.String name)
int	getKeyType(java.lang.String name) Checks the key type of the given alias
void	save()
byte[]	sign(java.lang.String name, byte[] data) Signs the data with the privatekey of the given name

Methods inherited from class java.lang.Object

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

Constructor Detail

SimpleSigner

public SimpleSigner(java.lang.String file,
                    PassPhraseAgent agent)

Method Detail

addKey

public final void addKey(java.lang.String name,
                         java.security.PrivateKey key)
                  throws UserCancellationException

Adds the given key to the store. Uses the PassPhrase agent to ask for PassPhrase.

Parameters:

name - The name to store it as

key - The PrivateKey itself.

Throws:

UserCancellationException

addKey

public final void addKey(java.lang.String name,
                         char[] passphrase,
                         java.security.PrivateKey key)

Adds the given key to the store.

Parameters:

name - The name to store it as

passphrase - The passphrase to encrypt the key

key - The PrivateKey itself.

canSignFor

public final boolean canSignFor(java.lang.String name)

Description copied from interface: Signer

Returns true if the Signer contains a signer for the given name

Specified by:

canSignFor in interface Signer

Returns:

true if signer is contained

getKeyType

public final int getKeyType(java.lang.String name)

Checks the key type of the given alias

Specified by:

getKeyType in interface Signer

Parameters:

name -

Returns:

KEY_NONE,KEY_RSA,KEY_DSA

getDigestedName

protected static final java.lang.String getDigestedName(java.lang.String name)

save

public final void save()

Specified by:

save in interface Signer

sign

public final byte[] sign(java.lang.String name,
                         byte[] data)
                  throws UserCancellationException

Signs the data with the privatekey of the given name

Specified by:

sign in interface Signer

Parameters:

name - Alias of private key to be used within KeyStore

data - Data to be signed

Returns:

The signature

Throws:

UserCancellationException

generateKey

public final java.security.PublicKey generateKey(java.lang.String alias)
                                          throws UserCancellationException

Description copied from interface: Signer

Creates a new KeyPair, stores the PrivateKey using the given alias and returns the PublicKey.

Specified by:

generateKey in interface Signer

Returns:

Generated PublicKey

Throws:

UserCancellationException

generateKey

public java.security.PublicKey generateKey()
                                    throws UserCancellationException

Description copied from interface: Signer

Creates a new KeyPair, stores the PrivateKey using the base32 sha1 of the public key as it's alias and returns the PublicKey.

Specified by:

generateKey in interface Signer

Returns:

Generated PublicKey

Throws:

UserCancellationException