1 files changed, 75 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/asn1/GMSSPublicKey.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/asn1/GMSSPublicKey.java
new file mode 100644
index 000000000..dcf83f2a9
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/pqc/asn1/GMSSPublicKey.java
@@ -0,0 +1,75 @@
+package org.spongycastle.pqc.asn1;
+
+import org.spongycastle.asn1.ASN1EncodableVector;
+import org.spongycastle.asn1.ASN1Integer;
+import org.spongycastle.asn1.ASN1Object;
+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.util.Arrays;
+
+/**
+ * This class implements an ASN.1 encoded GMSS public key. The ASN.1 definition
+ * of this structure is:
+ * <p/>
+ * <pre>
+ *  GMSSPublicKey        ::= SEQUENCE{
+ *      version         INTEGER
+ *      publicKey       OCTET STRING
+ *  }
+ * </pre>
+ */
+public class GMSSPublicKey
+    extends ASN1Object
+{
+    private ASN1Integer version;
+    private byte[] publicKey;
+
+    private GMSSPublicKey(ASN1Sequence seq)
+    {
+        if (seq.size() != 2)
+        {
+            throw new IllegalArgumentException("size of seq = " + seq.size());
+        }
+
+        this.version = ASN1Integer.getInstance(seq.getObjectAt(0));
+        this.publicKey = ASN1OctetString.getInstance(seq.getObjectAt(1)).getOctets();
+    }
+
+    public GMSSPublicKey(byte[] publicKeyBytes)
+    {
+        this.version = new ASN1Integer(0);
+        this.publicKey = publicKeyBytes;
+    }
+
+    public static GMSSPublicKey getInstance(Object o)
+    {
+        if (o instanceof GMSSPublicKey)
+        {
+            return (GMSSPublicKey)o;
+        }
+        else if (o != null)
+        {
+            return new GMSSPublicKey(ASN1Sequence.getInstance(o));
+        }
+
+        return null;
+    }
+
+    public byte[] getPublicKey()
+    {
+        return Arrays.clone(publicKey);
+    }
+
+    public ASN1Primitive toASN1Primitive()
+    {
+        ASN1EncodableVector v = new ASN1EncodableVector();
+
+        v.add(version);
+        v.add(new DEROctetString(publicKey));
+
+        return new DERSequence(v);
+    }
+}