CipherFactory

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org.apache.derby.iapi.services.crypto
Interface CipherFactory

public interface CipherFactory

A CipherFactory can create new CipherProvider, which is a wrapper for a javax.crypto.Cipher This service is only available when run on JDK1.2 or beyond. To use this service, either the SunJCE or an alternative clean room implementation of the JCE must be installed. To use a CipherProvider to encrypt or decrypt, it needs 3 things: 1) A CipherProvider that is initialized to ENCRYPT or DECRYPT 2) A secret Key for the encryption/decryption 3) An Initialization Vector (IvParameterSpec) that is used to create some randomness in the encryption See $WS/docs/funcspec/mulan/configurableEncryption.html See http://java.sun.com/products/JDK/1.1/docs/guide/security/CryptoSpec.html See http://java.sun.com/products/JDK/1.2/docs/guide/security/CryptoSpec.html See http://java.sun.com/products/jdk/1.2/jce/index.html

Field Summary

static int DECRYPT


static int ENCRYPT
          Get a CipherProvider that either Encrypts or Decrypts.

static int MIN_BOOTPASS_LENGTH
          Minimum bootPassword length

Method Summary

java.lang.String changeBootPassword(java.lang.String changeString, java.util.Properties properties, CipherProvider verify)


CipherProvider createNewCipher(int mode)
          Returns a CipherProvider which is the encryption or decryption engine.

java.security.SecureRandom getSecureRandom()


void verifyKey(boolean create, org.apache.derby.io.StorageFactory storageFactory, java.util.Properties properties)
          Verify the external encryption key

Field Detail

MIN_BOOTPASS_LENGTH

public static final int MIN_BOOTPASS_LENGTH

Minimum bootPassword length

See Also:: Constant Field Values

ENCRYPT

public static final int ENCRYPT

Get a CipherProvider that either Encrypts or Decrypts.

See Also:: Constant Field Values

DECRYPT

public static final int DECRYPT

See Also:: Constant Field Values

Method Detail

getSecureRandom

public java.security.SecureRandom getSecureRandom()

createNewCipher

public CipherProvider createNewCipher(int mode)
                               throws org.apache.derby.iapi.error.StandardException

Returns a CipherProvider which is the encryption or decryption engine.

changeBootPassword

public java.lang.String changeBootPassword(java.lang.String changeString,
                                           java.util.Properties properties,
                                           CipherProvider verify)
                                    throws org.apache.derby.iapi.error.StandardException

verifyKey

public void verifyKey(boolean create,
                      org.apache.derby.io.StorageFactory storageFactory,
                      java.util.Properties properties)
               throws org.apache.derby.iapi.error.StandardException

Verify the external encryption key