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The Bouncy Castle Crypto package is a Java implementation of cryptographic algorithms. This jar contains JCE provider and lightweight API for the Bouncy Castle Cryptography APIs for JDK 1.5 to JDK 1.8. Note: this package includes the NTRU encryption algorithms.

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package org.bouncycastle.asn1.cryptopro;

import org.bouncycastle.asn1.ASN1EncodableVector;
import org.bouncycastle.asn1.ASN1Object;
import org.bouncycastle.asn1.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.ASN1TaggedObject;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.util.Arrays;

/**
 * 
 * Gost28147-89-EncryptedKey ::=   SEQUENCE {
 *       encryptedKey         Gost28147-89-Key,
 *       maskKey              [0] IMPLICIT Gost28147-89-Key
 *                                 OPTIONAL,
 *       macKey               Gost28147-89-MAC
 * }
 * 
*/ public class Gost2814789EncryptedKey extends ASN1Object { private final byte[] encryptedKey; private final byte[] maskKey; private final byte[] macKey; private Gost2814789EncryptedKey(ASN1Sequence seq) { if (seq.size() == 2) { encryptedKey = Arrays.clone(ASN1OctetString.getInstance(seq.getObjectAt(0)).getOctets()); macKey = Arrays.clone(ASN1OctetString.getInstance(seq.getObjectAt(1)).getOctets()); maskKey = null; } else if (seq.size() == 3) { encryptedKey = Arrays.clone(ASN1OctetString.getInstance(seq.getObjectAt(0)).getOctets()); maskKey = Arrays.clone(ASN1OctetString.getInstance(ASN1TaggedObject.getInstance(seq.getObjectAt(1)), false).getOctets()); macKey = Arrays.clone(ASN1OctetString.getInstance(seq.getObjectAt(2)).getOctets()); } else { throw new IllegalArgumentException("unknown sequence length: " + seq.size()); } } public static Gost2814789EncryptedKey getInstance( Object obj) { if (obj instanceof Gost2814789EncryptedKey) { return (Gost2814789EncryptedKey)obj; } if (obj != null) { return new Gost2814789EncryptedKey(ASN1Sequence.getInstance(obj)); } return null; } public Gost2814789EncryptedKey(byte[] encryptedKey, byte[] macKey) { this(encryptedKey, null, macKey); } public Gost2814789EncryptedKey(byte[] encryptedKey, byte[] maskKey, byte[] macKey) { this.encryptedKey = Arrays.clone(encryptedKey); this.maskKey = Arrays.clone(maskKey); this.macKey = Arrays.clone(macKey); } public byte[] getEncryptedKey() { return Arrays.clone(encryptedKey); } public byte[] getMaskKey() { return Arrays.clone(maskKey); } public byte[] getMacKey() { return Arrays.clone(macKey); } public ASN1Primitive toASN1Primitive() { ASN1EncodableVector v = new ASN1EncodableVector(); v.add(new DEROctetString(encryptedKey)); if (maskKey != null) { v.add(new DERTaggedObject(false, 0, new DEROctetString(encryptedKey))); } v.add(new DEROctetString(macKey)); return new DERSequence(v); } }




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