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## org.bouncycastle.crypto.encodings
Class PKCS1Encoding

    java.lang.Object
      org.bouncycastle.crypto.encodings.PKCS1Encoding

All Implemented Interfaces:
  AsymmetricBlockCipher

public class PKCS1Encoding
extends java.lang.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.

Constructor Summary
`PKCS1Encoding(AsymmetricBlockCipher cipher)`

Method Summary
`int` | `getInputBlockSize()` returns the largest size an input block can be.
`int` | `getOutputBlockSize()` returns the maximum size of the block produced by this cipher.
`AsymmetricBlockCipher` | `getUnderlyingCipher()`
`void` | `init(boolean forEncryption, CipherParameters param)` initialise the cipher.
`byte[]` | `processBlock(byte[] in, int inOff, int inLen)` process the block of len bytes stored in in from offset inOff.

Methods inherited from class java.lang.Object
`clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait`

Constructor Detail

### PKCS1Encoding

    public PKCS1Encoding(AsymmetricBlockCipher cipher)

Method Detail

### 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.

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