org.cryptacular.pbe

Interface EncryptionScheme

All Known Implementing Classes:

AbstractEncryptionScheme, OpenSSLEncryptionScheme, PBES1EncryptionScheme, PBES2EncryptionScheme

public interface EncryptionScheme

Describes a password-based encryption scheme.

Version:

$Revision: 2744 $

Author:

Middleware Services

Method Summary

Modifier and Type	Method and Description
byte[]	decrypt(byte[] ciphertext) Decrypts the given ciphertext into plaintext using the derived key.
void	decrypt(InputStream in, OutputStream out) Decrypts ciphertext from an input stream into plaintext in the output stream.
byte[]	encrypt(byte[] plaintext) Encrypts the given plaintext bytes into a byte array of ciphertext using the derived key.
void	encrypt(InputStream in, OutputStream out) Encrypts the data in the given plaintext input stream into ciphertext in the output stream.
OutputStream	wrap(boolean encryptionFlag, OutputStream out) Wraps an output stream with one that performs encryption or decryption on the fly.

Method Detail

encrypt

byte[] encrypt(byte[] plaintext)

Encrypts the given plaintext bytes into a byte array of ciphertext using the derived key.

Parameters:

plaintext - Input plaintext bytes.

Returns:

Ciphertext resulting from plaintext encryption.

encrypt

void encrypt(InputStream in,
             OutputStream out)
      throws IOException

Encrypts the data in the given plaintext input stream into ciphertext in the output stream. Use EncodingOutputStream to produce ciphertext bytes that encoded as a string data in the output stream.

Parameters:

in - Input stream of plaintext.

out - Output stream of ciphertext.

Throws:

IOException - On stream read/write errors.

decrypt

byte[] decrypt(byte[] ciphertext)

Decrypts the given ciphertext into plaintext using the derived key.

Parameters:

ciphertext - Input ciphertext bytes.

Returns:

Plaintext resulting from ciphertext decryption.

decrypt

void decrypt(InputStream in,
             OutputStream out)
      throws IOException

Decrypts ciphertext from an input stream into plaintext in the output stream. Use DecodingInputStream to handle input ciphertext encoded as string data.

Parameters:

in - Input stream of ciphertext.

out - Output stream of plaintext.

Throws:

IOException - On stream read/write errors.

wrap

OutputStream wrap(boolean encryptionFlag,
                  OutputStream out)

Wraps an output stream with one that performs encryption or decryption on the fly.

Parameters:

encryptionFlag - True to signal encryption, false for decryption.

out - Output stream to wrap

Returns:

Wrapped output steam.