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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 with debug enabled.
package org.bouncycastle.pqc.asn1;
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.ASN1TaggedObject;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.DERTaggedObject;
import org.bouncycastle.util.Arrays;
/**
* XMMSMTPrivateKey
*
* XMMSMTPrivateKey ::= SEQUENCE {
* version INTEGER -- 0
* keyData SEQUENCE {
* index INTEGER
* secretKeySeed OCTET STRING
* secretKeyPRF OCTET STRING
* publicSeed OCTET STRING
* root OCTET STRING
* }
* bdsState CHOICE {
* platformSerialization [0] OCTET STRING
* } OPTIONAL
* }
*
*/
public class XMSSMTPrivateKey
extends ASN1Object
{
private final int index;
private final byte[] secretKeySeed;
private final byte[] secretKeyPRF;
private final byte[] publicSeed;
private final byte[] root;
private final byte[] bdsState;
public XMSSMTPrivateKey(int index, byte[] secretKeySeed, byte[] secretKeyPRF, byte[] publicSeed, byte[] root, byte[] bdsState)
{
this.index = index;
this.secretKeySeed = Arrays.clone(secretKeySeed);
this.secretKeyPRF = Arrays.clone(secretKeyPRF);
this.publicSeed = Arrays.clone(publicSeed);
this.root = Arrays.clone(root);
this.bdsState = Arrays.clone(bdsState);
}
private XMSSMTPrivateKey(ASN1Sequence seq)
{
if (!ASN1Integer.getInstance(seq.getObjectAt(0)).getValue().equals(BigInteger.valueOf(0)))
{
throw new IllegalArgumentException("unknown version of sequence");
}
if (seq.size() != 2 && seq.size() != 3)
{
throw new IllegalArgumentException("key sequence wrong size");
}
ASN1Sequence keySeq = ASN1Sequence.getInstance(seq.getObjectAt(1));
this.index = ASN1Integer.getInstance(keySeq.getObjectAt(0)).getValue().intValue();
this.secretKeySeed = Arrays.clone(DEROctetString.getInstance(keySeq.getObjectAt(1)).getOctets());
this.secretKeyPRF = Arrays.clone(DEROctetString.getInstance(keySeq.getObjectAt(2)).getOctets());
this.publicSeed = Arrays.clone(DEROctetString.getInstance(keySeq.getObjectAt(3)).getOctets());
this.root = Arrays.clone(DEROctetString.getInstance(keySeq.getObjectAt(4)).getOctets());
if(seq.size() == 3)
{
this.bdsState = Arrays.clone(DEROctetString.getInstance(ASN1TaggedObject.getInstance(seq.getObjectAt(2)), true).getOctets());
}
else
{
this.bdsState = null;
}
}
public static XMSSMTPrivateKey getInstance(Object o)
{
if (o instanceof XMSSMTPrivateKey)
{
return (XMSSMTPrivateKey)o;
}
else if (o != null)
{
return new XMSSMTPrivateKey(ASN1Sequence.getInstance(o));
}
return null;
}
public int getIndex()
{
return index;
}
public byte[] getSecretKeySeed()
{
return Arrays.clone(secretKeySeed);
}
public byte[] getSecretKeyPRF()
{
return Arrays.clone(secretKeyPRF);
}
public byte[] getPublicSeed()
{
return Arrays.clone(publicSeed);
}
public byte[] getRoot()
{
return Arrays.clone(root);
}
public byte[] getBdsState()
{
return Arrays.clone(bdsState);
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
v.add(new ASN1Integer(0)); // version
ASN1EncodableVector vK = new ASN1EncodableVector();
vK.add(new ASN1Integer(index));
vK.add(new DEROctetString(secretKeySeed));
vK.add(new DEROctetString(secretKeyPRF));
vK.add(new DEROctetString(publicSeed));
vK.add(new DEROctetString(root));
v.add(new DERSequence(vK));
v.add(new DERTaggedObject(true, 0, new DEROctetString(bdsState)));
return new DERSequence(v);
}
}
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