org.refcodes.security

Interface Encrypter<ENC,DEC,EXC extends EncryptionException>

public interface Encrypter<ENC,DEC,EXC extends EncryptionException>

Plain interface for providing straight forward encryption functionality as of toEncrypted(Object) and for forcing your plain functionality to provide a bridge to the Java Cryptographic Extension (JCE) framework's CipherSpi as of toEncrypted(byte[], int, int, byte[], int). This way you can use your algorithms outside the JCE framework. This may be necessary when your Java's security settings prevent running your own JCE extensions from inside an (Oracle-) unsigned JAR.

Method Summary

Modifier and Type	Method and Description
int	toEncrypted(byte[] aInput, int aInputOffset, int aInputLength, byte[] aOutput, int aOutputOffset) For compatibility with the java.security framework, especially to be integrated in a sub-class of the CipherSpi.
ENC	toEncrypted(DEC aInput) You pass in data of a given type and you get encrypted data of (another) given type.

Method Detail

toEncrypted

ENC toEncrypted(DEC aInput)
         throws EXC extends EncryptionException

You pass in data of a given type and you get encrypted data of (another) given type.

Parameters:

aInput - The input data to be encrypted.

Returns:

The encrypted output data.

Throws:

EXC - Thrown in case something went wrong upon encryption.

EXC extends EncryptionException

toEncrypted

int toEncrypted(byte[] aInput,
                int aInputOffset,
                int aInputLength,
                byte[] aOutput,
                int aOutputOffset)
         throws ShortBufferException,
                EncryptionException

For compatibility with the java.security framework, especially to be integrated in a sub-class of the CipherSpi.

Parameters:

aInput - The input to be encrypted.

aInputOffset - The offset to start encryption.

aInputLength - The length to be encrypted

aOutput - The output where to encrypt to.

aOutputOffset - The offset where to start writing the encrypted output.

Returns:

The number of bytes encrypted.

Throws:

ShortBufferException - In case you provided lengths and offsets not fitting with the provided arrays.

EncryptionException - Thrown in case an encryption issue occurred regarding the Encrypter. Probably the configuration of your Encrypter does not fit the one of the Decrypter.