Constructor Detail

• CryptorImplCipher

  public CryptorImplCipher​(RandomFactory randomFactory,
                           CryptorConfig config,
                           Key key)

  The constructor.

  Parameters:

  randomFactory - the RandomFactory to use.

  config - the CryptorConfig.

  key - the Key to use.

Method Detail

• getAlgorithm

  public String getAlgorithm()

  Specified by:

  getAlgorithm in interface CryptoAlgorithm

  Returns:

  the name of the underlying algorithm (e.g. "RSA", "NONEwithECDSA", etc.).

  See Also:

  Key.getAlgorithm(), Signature.getAlgorithm(), MessageDigest.getAlgorithm(), SecureRandom.getAlgorithm(), Cipher.getAlgorithm()

• getNonceSize

  public int getNonceSize()

  Description copied from interface: AbstractGetNonceSize
  Unlike Cipher this API is designed for ease of use. Some cryptographic algorithms require an initialization vector (IV) and others do not. With this API you do not have to care and cannot do things wrong. The nonce will be prepended automatically to the encrypted payload and reconstructed from there on decryption. This works both for crypt and for streaming.

  Specified by:

  getNonceSize in interface AbstractGetNonceSize

  Returns:

  the size of the nonce in bytes or 0 for none.

  See Also:

  Cipher.getIV()

• getCipher

  protected Cipher getCipher()

  Returns:

  the underlying Cipher.

• isEncryptor

  protected abstract boolean isEncryptor()

  Returns:

  true if Encryptor, false if Decryptor.

• getConfig

  public final CryptorConfig getConfig()

  Returns:

  the CryptorConfig.

• getMode

  protected String getMode()

  Returns:

  "decryption" for Decryptor and "encryption" for Encryptor.

• crypt

  public byte[] crypt​(byte[] input,
                      int offset,
                      int length,
                      boolean complete)

  Specified by:

  crypt in interface Cryptor

  Parameters:

  input - the next chunk of data to encrypt or decrypt.

  offset - the offset where to start in the input array.

  length - the number of bytes to read from the input array.

  complete - - true to complete the encryption or decryption in case this is the last chunk of data, false otherwise.

  Returns:

  the number of bytes that have been written into the output array.

  See Also:

  Cipher.update(byte[], int, int), Cipher.doFinal(byte[], int, int)

• wrapSecurityException

  protected RuntimeException wrapSecurityException​(Exception e)

  Parameters:

  e - the Exception to wrap.

  Returns:

  the wrapped RuntimeException.

• reset

  public void reset()

  Description copied from interface: CryptoProcessor
  Will reset the internal state of this object. Please note that complex algorithms especially for Cryptor may not reusable. It is therefore preferable to always create a fresh instance for each cryptographic task.

  Specified by:

  reset in interface CryptoProcessor

  See Also:

  MessageDigest.reset()