org.hyperledger.fabric.sdk.idemix.IdemixIssuerKey Maven / Gradle / Ivy
/*
*
* Copyright 2017, 2018 IBM Corp. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
* http://www.apache.org/licenses/LICENSE-2.0
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*
*/
package org.hyperledger.fabric.sdk.idemix;
import org.apache.milagro.amcl.FP256BN.BIG;
import org.apache.milagro.amcl.RAND;
/**
* IdemixIssuerKey represents an idemix issuer key pair
*/
public class IdemixIssuerKey {
private final BIG Isk;
private final IdemixIssuerPublicKey Ipk;
/**
* Constructor
*
* @param attributeNames the names of attributes as String array (must not contain duplicates)
*/
IdemixIssuerKey(String[] attributeNames) {
final RAND rng = IdemixUtils.getRand();
// generate the secret key
Isk = IdemixUtils.randModOrder(rng);
// construct the corresponding public key
Ipk = new IdemixIssuerPublicKey(attributeNames, Isk);
}
/**
* @return The public part of the issuer key pair
*/
IdemixIssuerPublicKey getIpk() {
return Ipk;
}
/**
* @return The secret part of the issuer key pair
*/
BIG getIsk() {
return Isk;
}
}