org.neuclear.commons.crypto.signers
Interface Signer

All Known Subinterfaces:

BrowsableSigner

All Known Implementing Classes:

DefaultSigner, JCESigner, PersonalSigner, SimpleSigner, SQLSigner, TestCaseSigner

public interface Signer

The Signer follows the following model:

                                  (Optional)
                               +---------------+
                               |PassPhraseAgent|
                               +-------+-------+
                                       |PassPhrase
     +-------------------+         +---+----+
     |Signing Application|--Data-->| Signer |
     +--------+----------+         +---+----+
              +-<-----Signature--------+

Field Summary

static int	KEY_DSA
static int	KEY_NONE
static int	KEY_OTHER
static int	KEY_RSA

Method Summary

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.
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

Field Detail

KEY_NONE

static final int KEY_NONE

See Also:

Constant Field Values

KEY_RSA

static final int KEY_RSA

See Also:

Constant Field Values

KEY_DSA

static final int KEY_DSA

See Also:

Constant Field Values

KEY_OTHER

static final int KEY_OTHER

See Also:

Constant Field Values

Method Detail

sign

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

Signs the data with the privatekey of the given name

Parameters:

name - Alias of private key to be used within KeyStore

data - Data to be signed

Returns:

The signature

Throws:

UserCancellationException

NonExistingSignerException

canSignFor

boolean canSignFor(java.lang.String name)

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

Parameters:

name -

Returns:

true if signer is contained

getKeyType

int getKeyType(java.lang.String name)

Checks the key type of the given alias

Parameters:

name -

Returns:

KEY_NONE,KEY_RSA,KEY_DSA

generateKey

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

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

Parameters:

alias -

Returns:

Generated PublicKey

Throws:

UserCancellationException

generateKey

java.security.PublicKey generateKey()
                                    throws UserCancellationException

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

Returns:

Generated PublicKey

Throws:

UserCancellationException

save

void save()
          throws UserCancellationException

Throws:

UserCancellationException