Java tutorial
/** * Copyright 2013 Crypto Workshop Pty Ltd * * 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.cryptoworkshop.ximix.common.asn1.message; import java.math.BigInteger; import org.bouncycastle.asn1.ASN1EncodableVector; import org.bouncycastle.asn1.ASN1Integer; import org.bouncycastle.asn1.ASN1Object; import org.bouncycastle.asn1.ASN1Primitive; import org.bouncycastle.asn1.ASN1Sequence; import org.bouncycastle.asn1.DERSequence; import org.bouncycastle.asn1.DERUTF8String; /** * Creation message for setting a transit board for carrying out an operation. */ public class TransitBoardMessage extends ASN1Object { private final long operationNumber; private final String boardName; private final int stepNumber; /** * Base constructor. * * @param operationNumber the ID of the operation the transit board will be used for. * @param boardName the name of the board the transit board is associated with. * @param stepNumber the number of the step in the operation the transit board is for. */ public TransitBoardMessage(long operationNumber, String boardName, int stepNumber) { this.operationNumber = operationNumber; this.boardName = boardName; this.stepNumber = stepNumber; } private TransitBoardMessage(ASN1Sequence seq) { this.operationNumber = ASN1Integer.getInstance(seq.getObjectAt(0)).getValue().longValue(); this.boardName = DERUTF8String.getInstance(seq.getObjectAt(1)).getString(); this.stepNumber = ASN1Integer.getInstance(seq.getObjectAt(2)).getValue().intValue(); } public static final TransitBoardMessage getInstance(Object o) { if (o instanceof TransitBoardMessage) { return (TransitBoardMessage) o; } else if (o != null) { return new TransitBoardMessage(ASN1Sequence.getInstance(o)); } return null; } @Override public ASN1Primitive toASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(new ASN1Integer(BigInteger.valueOf(operationNumber))); v.add(new DERUTF8String(boardName)); v.add(new ASN1Integer(BigInteger.valueOf(stepNumber))); return new DERSequence(v); } public String getBoardName() { return boardName; } public long getOperationNumber() { return operationNumber; } public int getStepNumber() { return stepNumber; } }