org.bouncycastle.pqc.legacy.crypto.mceliece
Class McElieceKobaraImaiCipher

java.lang.Object
  |
  +--org.bouncycastle.pqc.legacy.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 McEliece-Type Cryptosystems and their Security", technical report. https://www.degruyter.com/document/doi/10.1515/JMC.2007.009/html

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 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.

PUBLIC_CONSTANT

public static final byte[] PUBLIC_CONSTANT

A predetermined public constant.

Constructor Detail

McElieceKobaraImaiCipher

public McElieceKobaraImaiCipher()

Method Detail

init

public void init(boolean forEncryption,
                 CipherParameters param)

Specified by:

init in interface MessageEncryptor

Following copied from interface: org.bouncycastle.pqc.crypto.MessageEncryptor

Parameters:

forEncrypting - 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

messageEncrypt

public byte[] messageEncrypt(byte[] input)

Specified by:

messageEncrypt in interface MessageEncryptor

Following copied from interface: org.bouncycastle.pqc.crypto.MessageEncryptor

Parameters:

message - the message to be signed.

messageDecrypt

public byte[] messageDecrypt(byte[] input)
                      throws InvalidCipherTextException

Specified by:

messageDecrypt in interface MessageEncryptor

Following copied from interface: org.bouncycastle.pqc.crypto.MessageEncryptor

Parameters:

cipher - the cipher text of the message

Throws:

InvalidCipherTextException -