java.lang.Object
- org.bouncycastle.crypto.encodings.OAEPEncoding

All Implemented Interfaces:

AsymmetricBlockCipher
```
public class OAEPEncoding
extends java.lang.Object
implements AsymmetricBlockCipher
```
Optimal Asymmetric Encryption Padding (OAEP) - see PKCS 1 V 2.

Constructor Summary

Constructors
Constructor	Description
`OAEPEncoding(AsymmetricBlockCipher cipher)`
`OAEPEncoding(AsymmetricBlockCipher cipher, Digest hash)`
`OAEPEncoding(AsymmetricBlockCipher cipher, Digest hash, byte[] encodingParams)`
`OAEPEncoding(AsymmetricBlockCipher cipher, Digest hash, Digest mgf1Hash, byte[] encodingParams)`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`byte[]`	`decodeBlock(byte[] in, int inOff, int inLen)`
`byte[]`	`encodeBlock(byte[] in, int inOff, int inLen)`
`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
  - OAEPEncoding
```
public OAEPEncoding(AsymmetricBlockCipher cipher)
```
  - OAEPEncoding
```
public OAEPEncoding(AsymmetricBlockCipher cipher,
                    Digest hash)
```
  - OAEPEncoding
```
public OAEPEncoding(AsymmetricBlockCipher cipher,
                    Digest hash,
                    byte[] encodingParams)
```
  - OAEPEncoding
```
public OAEPEncoding(AsymmetricBlockCipher cipher,
                    Digest hash,
                    Digest mgf1Hash,
                    byte[] encodingParams)
```
- 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.
  - encodeBlock
```
public byte[] encodeBlock(byte[] in,
                          int inOff,
                          int inLen)
                   throws InvalidCipherTextException
```
    Throws:
    
    InvalidCipherTextException
  - decodeBlock
```
public byte[] decodeBlock(byte[] in,
                          int inOff,
                          int inLen)
                   throws InvalidCipherTextException
```
    Throws:
    
    InvalidCipherTextException - if the decrypted block turns out to be badly formatted.

Class OAEPEncoding

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Constructor Detail

OAEPEncoding

OAEPEncoding

OAEPEncoding

OAEPEncoding

Method Detail

getUnderlyingCipher

init

getInputBlockSize

getOutputBlockSize

processBlock

encodeBlock

decodeBlock