Package org.bouncycastle.crypto.encodings

Class PKCS1Encoding

java.lang.Object
org.bouncycastle.crypto.encodings.PKCS1Encoding
All Implemented Interfaces:
AsymmetricBlockCipher
public class PKCS1Encoding
extends Object
implements AsymmetricBlockCipher
this does your basic PKCS 1 v1.5 padding - whether or not you should be using this depends on your application - see PKCS1 Version 2 for details.

  • Field Details

    • STRICT_LENGTH_ENABLED_PROPERTY

      public static final String STRICT_LENGTH_ENABLED_PROPERTY
      some providers fail to include the leading zero in PKCS1 encoded blocks. If you need to work with one of these set the system property org.bouncycastle.pkcs1.strict to false.

      The system property is checked during construction of the encoding object, it is set to true by default.

      See Also:
      Constant Field Values

  • Constructor Details

    • PKCS1Encoding

      public PKCS1Encoding​(AsymmetricBlockCipher cipher)
      Basic constructor.
      Parameters:
      cipher -

  • Method Details

    • getUnderlyingCipher

      public AsymmetricBlockCipher getUnderlyingCipher()

    • init

      public void init​(boolean forEncryption, CipherParameters param)
      Description copied from interface: AsymmetricBlockCipher
      initialise the cipher.
      Specified by:
      init in interface AsymmetricBlockCipher
      Parameters:
      forEncryption - if true the cipher is initialised for encryption, if false for decryption.
      param - the key and other data required by the cipher.

    • getInputBlockSize

      public int getInputBlockSize()
      Description copied from interface: AsymmetricBlockCipher
      returns the largest size an input block can be.
      Specified by:
      getInputBlockSize in interface AsymmetricBlockCipher
      Returns:
      maximum size for an input block.

    • getOutputBlockSize

      public int getOutputBlockSize()
      Description copied from interface: AsymmetricBlockCipher
      returns the maximum size of the block produced by this cipher.
      Specified by:
      getOutputBlockSize in interface AsymmetricBlockCipher
      Returns:
      maximum size of the output block produced by the cipher.

    • processBlock

      public byte[] processBlock​(byte[] in, int inOff, int inLen) throws InvalidCipherTextException
      Description copied from interface: AsymmetricBlockCipher
      process the block of len bytes stored in in from offset inOff.
      Specified by:
      processBlock in interface AsymmetricBlockCipher
      Parameters:
      in - the input data
      inOff - offset into the in array where the data starts
      inLen - the length of the block to be processed.
      Returns:
      the resulting byte array of the encryption/decryption process.
      Throws:
      InvalidCipherTextException - data decrypts improperly.