1 files changed, 96 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/asn1/McElieceCCA2PublicKey.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/asn1/McElieceCCA2PublicKey.java
new file mode 100644
index 000000000..186d8ca4d
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/asn1/McElieceCCA2PublicKey.java
@@ -0,0 +1,96 @@
+package org.spongycastle.pqc.asn1;
+
+import java.math.BigInteger;
+
+import org.spongycastle.asn1.ASN1EncodableVector;
+import org.spongycastle.asn1.ASN1Integer;
+import org.spongycastle.asn1.ASN1Object;
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.ASN1OctetString;
+import org.spongycastle.asn1.ASN1Primitive;
+import org.spongycastle.asn1.ASN1Sequence;
+import org.spongycastle.asn1.DEROctetString;
+import org.spongycastle.asn1.DERSequence;
+import org.spongycastle.pqc.math.linearalgebra.GF2Matrix;
+
+public class McElieceCCA2PublicKey
+    extends ASN1Object
+{
+    private ASN1ObjectIdentifier oid;
+    private int n;
+    private int t;
+
+    private byte[] matrixG;
+
+    public McElieceCCA2PublicKey(ASN1ObjectIdentifier oid, int n, int t, GF2Matrix g)
+    {
+        this.oid = oid;
+        this.n = n;
+        this.t = t;
+        this.matrixG = g.getEncoded();
+    }
+
+    private McElieceCCA2PublicKey(ASN1Sequence seq)
+    {
+        oid = ((ASN1ObjectIdentifier)seq.getObjectAt(0));
+        BigInteger bigN = ((ASN1Integer)seq.getObjectAt(1)).getValue();
+        n = bigN.intValue();
+
+        BigInteger bigT = ((ASN1Integer)seq.getObjectAt(2)).getValue();
+        t = bigT.intValue();
+
+        matrixG = ((ASN1OctetString)seq.getObjectAt(3)).getOctets();
+    }
+
+    public ASN1ObjectIdentifier getOID()
+    {
+        return oid;
+    }
+
+    public int getN()
+    {
+        return n;
+    }
+
+    public int getT()
+    {
+        return t;
+    }
+
+    public GF2Matrix getG()
+    {
+        return new GF2Matrix(matrixG);
+    }
+
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector v = new ASN1EncodableVector();
+        // encode <oidString>
+        v.add(oid);
+
+        // encode <n>
+        v.add(new ASN1Integer(n));
+
+        // encode <t>
+        v.add(new ASN1Integer(t));
+
+        // encode <matrixG>
+        v.add(new DEROctetString(matrixG));
+
+        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;
+    }
+}