org.bouncycastle.pqc.asn1.McElieceCCA2PublicKey Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of bcprov-debug-jdk15to18 Show documentation
Show all versions of bcprov-debug-jdk15to18 Show documentation
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.
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.ASN1OctetString;
import org.bouncycastle.asn1.ASN1Primitive;
import org.bouncycastle.asn1.ASN1Sequence;
import org.bouncycastle.asn1.DEROctetString;
import org.bouncycastle.asn1.DERSequence;
import org.bouncycastle.asn1.x509.AlgorithmIdentifier;
import org.bouncycastle.pqc.math.linearalgebra.GF2Matrix;
public class McElieceCCA2PublicKey
extends ASN1Object
{
private final int n;
private final int t;
private final GF2Matrix g;
private final AlgorithmIdentifier digest;
public McElieceCCA2PublicKey(int n, int t, GF2Matrix g, AlgorithmIdentifier digest)
{
this.n = n;
this.t = t;
this.g = new GF2Matrix(g.getEncoded());
this.digest = digest;
}
private McElieceCCA2PublicKey(ASN1Sequence seq)
{
n = ((ASN1Integer)seq.getObjectAt(0)).intValueExact();
t = ((ASN1Integer)seq.getObjectAt(1)).intValueExact();
g = new GF2Matrix(((ASN1OctetString)seq.getObjectAt(2)).getOctets());
digest = AlgorithmIdentifier.getInstance(seq.getObjectAt(3));
}
public int getN()
{
return n;
}
public int getT()
{
return t;
}
public GF2Matrix getG()
{
return g;
}
public AlgorithmIdentifier getDigest()
{
return digest;
}
public ASN1Primitive toASN1Primitive()
{
ASN1EncodableVector v = new ASN1EncodableVector();
// encode
v.add(new ASN1Integer(n));
// encode
v.add(new ASN1Integer(t));
// encode
v.add(new DEROctetString(g.getEncoded()));
v.add(digest);
return new DERSequence(v);
}
public static McElieceCCA2PublicKey getInstance(Object o)
{
if (o instanceof McElieceCCA2PublicKey)
{
return (McElieceCCA2PublicKey)o;
}
else if (o != null)
{
return new McElieceCCA2PublicKey(ASN1Sequence.getInstance(o));
}
return null;
}
}
© 2015 - 2024 Weber Informatics LLC | Privacy Policy