| 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 |
| * <pre> |
| * 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 |
| * } |
| * </pre> |
| */ |
| 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); |
| } |
| } |