Bouncy Castle Cryptography Library 1.48

org.bouncycastle.pqc.crypto.mceliece
Class McElieceKobaraImaiCipher

java.lang.Object
  extended by org.bouncycastle.pqc.crypto.mceliece.McElieceKobaraImaiCipher
All Implemented Interfaces:
MessageEncryptor

public class McElieceKobaraImaiCipher
extends java.lang.Object
implements MessageEncryptor

This class implements the Kobara/Imai conversion of the McEliecePKCS. This is a conversion of the McEliecePKCS which is CCA2-secure. For details, see D. Engelbert, R. Overbeck, A. Schmidt, "A summary of the development of the McEliece Cryptosystem", technical report.


Field Summary
static java.lang.String OID
          The OID of the algorithm.
static byte[] PUBLIC_CONSTANT
          A predetermined public constant.
 
Constructor Summary
McElieceKobaraImaiCipher()
           
 
Method Summary
 int getKeySize(McElieceCCA2KeyParameters key)
          Return the key size of the given key object.
 void init(boolean forSigning, CipherParameters param)
           
 void initCipherDecrypt(McElieceCCA2PrivateKeyParameters privKey)
           
 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

PUBLIC_CONSTANT

public static final byte[] PUBLIC_CONSTANT
A predetermined public constant.

Constructor Detail

McElieceKobaraImaiCipher

public McElieceKobaraImaiCipher()
Method Detail

init

public void init(boolean forSigning,
                 CipherParameters param)
Specified by:
init in interface MessageEncryptor
Parameters:
forSigning - true if we are encrypting a signature, false otherwise.
param - key parameters for encryption or decryption.

getKeySize

public int getKeySize(McElieceCCA2KeyParameters key)
Return the key size of the given key object.

Parameters:
key - the McElieceCCA2KeyParameters object
Returns:
the key size of the given key object

initCipherDecrypt

public void initCipherDecrypt(McElieceCCA2PrivateKeyParameters privKey)

messageEncrypt

public byte[] messageEncrypt(byte[] input)
                      throws java.lang.Exception
Specified by:
messageEncrypt in interface MessageEncryptor
Parameters:
input - the message to be signed.
Throws:
java.lang.Exception

messageDecrypt

public byte[] messageDecrypt(byte[] input)
                      throws java.lang.Exception
Specified by:
messageDecrypt in interface MessageEncryptor
Parameters:
input - the cipher text of the message
Throws:
java.lang.Exception

Bouncy Castle Cryptography Library 1.48