McEliecePointchevalCipher (Bouncy Castle Library 1.60 API Specification)

java.lang.Object
- org.bouncycastle.pqc.crypto.mceliece.McEliecePointchevalCipher

All Implemented Interfaces:

MessageEncryptor
```
public class McEliecePointchevalCipher
extends java.lang.Object
implements MessageEncryptor
```
This class implements the Pointcheval conversion of the McEliecePKCS. Pointcheval presents a generic technique to make a CCA2-secure cryptosystem from any partially trapdoor one-way function in the random oracle model. For details, see D. Engelbert, R. Overbeck, A. Schmidt, "A summary of the development of the McEliece Cryptosystem", technical report.

Field Summary

Fields
Modifier and Type Field Description

static java.lang.String OID
The OID of the algorithm.

Fields
Modifier and Type	Field	Description
`static java.lang.String`	`OID`	The OID of the algorithm.

Constructor Summary

Constructors
Constructor Description

McEliecePointchevalCipher()

Constructors
Constructor	Description
`McEliecePointchevalCipher()`

Method Summary

All Methods Instance Methods Concrete Methods
Modifier and Type	Method	Description
`protected int`	`decryptOutputSize(int inLen)`
`protected int`	`encryptOutputSize(int inLen)`
`int`	`getKeySize(McElieceCCA2KeyParameters key)`	Return the key size of the given key object.
`void`	`init(boolean forEncryption, CipherParameters param)`
`byte[]`	`messageDecrypt(byte[] input)`
`byte[]`	`messageEncrypt(byte[] input)`

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

- Field Detail
  - OID
```
public static final java.lang.String OID
```
    The OID of the algorithm.
    
    See Also:
    
    Constant Field Values
- Constructor Detail
  - McEliecePointchevalCipher
```
public McEliecePointchevalCipher()
```
- Method Detail
  - init
```
public void init(boolean forEncryption,
                 CipherParameters param)
```
    Specified by:
    
    init in interface MessageEncryptor
    
    Parameters:
    
    forEncryption - true if we are encrypting a signature, false otherwise.
    
    param - key parameters for encryption or decryption.
  - getKeySize
```
public int getKeySize(McElieceCCA2KeyParameters key)
               throws java.lang.IllegalArgumentException
```
    Return the key size of the given key object.
    
    Parameters:
    
    key - the McElieceCCA2KeyParameters object
    
    Returns:
    
    the key size of the given key object
    
    Throws:
    
    java.lang.IllegalArgumentException - if the key is invalid
  - decryptOutputSize
```
protected int decryptOutputSize(int inLen)
```
  - encryptOutputSize
```
protected int encryptOutputSize(int inLen)
```
  - messageEncrypt
```
public byte[] messageEncrypt(byte[] input)
```
    Specified by:
    
    messageEncrypt in interface MessageEncryptor
    
    Parameters:
    
    input - the message to be signed.
  - messageDecrypt
```
public byte[] messageDecrypt(byte[] input)
                      throws InvalidCipherTextException
```
    Specified by:
    
    messageDecrypt in interface MessageEncryptor
    
    Parameters:
    
    input - the cipher text of the message
    
    Throws:
    
    InvalidCipherTextException

Class McEliecePointchevalCipher

Field Summary

Constructor Summary

Method Summary

Methods inherited from class java.lang.Object

Field Detail

OID

Constructor Detail

McEliecePointchevalCipher

Method Detail

init

getKeySize

decryptOutputSize

encryptOutputSize

messageEncrypt

messageDecrypt