1 files changed, 151 insertions, 0 deletions
diff --git a/core/src/main/java/org/spongycastle/asn1/DERUniversalString.java b/core/src/main/java/org/spongycastle/asn1/DERUniversalString.java
new file mode 100644
index 00000000..cc613510
--- /dev/null
+++ b/core/src/main/java/org/spongycastle/asn1/DERUniversalString.java
@@ -0,0 +1,151 @@
+package org.spongycastle.asn1;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+
+import org.spongycastle.util.Arrays;
+
+/**
+ * DER UniversalString object.
+ */
+public class DERUniversalString
+    extends ASN1Primitive
+    implements ASN1String
+{
+    private static final char[]  table = { '0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'A', 'B', 'C', 'D', 'E', 'F' };
+    private byte[] string;
+    
+    /**
+     * return a Universal String from the passed in object.
+     *
+     * @param obj a DERUniversalString or an object that can be converted into one.
+     * @exception IllegalArgumentException if the object cannot be converted.
+     * @return a DERUniversalString instance, or null
+     */
+    public static DERUniversalString getInstance(
+        Object  obj)
+    {
+        if (obj == null || obj instanceof DERUniversalString)
+        {
+            return (DERUniversalString)obj;
+        }
+
+        if (obj instanceof byte[])
+        {
+            try
+            {
+                return (DERUniversalString)fromByteArray((byte[])obj);
+            }
+            catch (Exception e)
+            {
+                throw new IllegalArgumentException("encoding error getInstance: " + e.toString());
+            }
+        }
+
+        throw new IllegalArgumentException("illegal object in getInstance: " + obj.getClass().getName());
+    }
+
+    /**
+     * return a Universal String from a tagged object.
+     *
+     * @param obj the tagged object holding the object we want
+     * @param explicit true if the object is meant to be explicitly
+     *              tagged false otherwise.
+     * @exception IllegalArgumentException if the tagged object cannot
+     *               be converted.
+     * @return a DERUniversalString instance, or null
+     */
+    public static DERUniversalString getInstance(
+        ASN1TaggedObject obj,
+        boolean          explicit)
+    {
+        ASN1Primitive o = obj.getObject();
+
+        if (explicit || o instanceof DERUniversalString)
+        {
+            return getInstance(o);
+        }
+        else
+        {
+            return new DERUniversalString(((ASN1OctetString)o).getOctets());
+        }
+    }
+
+    /**
+     * basic constructor - byte encoded string.
+     */
+    public DERUniversalString(
+        byte[]   string)
+    {
+        this.string = string;
+    }
+
+    public String getString()
+    {
+        StringBuffer    buf = new StringBuffer("#");
+        ByteArrayOutputStream    bOut = new ByteArrayOutputStream();
+        ASN1OutputStream            aOut = new ASN1OutputStream(bOut);
+        
+        try
+        {
+            aOut.writeObject(this);
+        }
+        catch (IOException e)
+        {
+           throw new RuntimeException("internal error encoding BitString");
+        }
+        
+        byte[]    string = bOut.toByteArray();
+        
+        for (int i = 0; i != string.length; i++)
+        {
+            buf.append(table[(string[i] >>> 4) & 0xf]);
+            buf.append(table[string[i] & 0xf]);
+        }
+        
+        return buf.toString();
+    }
+
+    public String toString()
+    {
+        return getString();
+    }
+
+    public byte[] getOctets()
+    {
+        return string;
+    }
+
+    boolean isConstructed()
+    {
+        return false;
+    }
+
+    int encodedLength()
+    {
+        return 1 + StreamUtil.calculateBodyLength(string.length) + string.length;
+    }
+
+    void encode(
+        ASN1OutputStream out)
+        throws IOException
+    {
+        out.writeEncoded(BERTags.UNIVERSAL_STRING, this.getOctets());
+    }
+    
+    boolean asn1Equals(
+        ASN1Primitive o)
+    {
+        if (!(o instanceof DERUniversalString))
+        {
+            return false;
+        }
+
+        return Arrays.areEqual(string, ((DERUniversalString)o).string);
+    }
+    
+    public int hashCode()
+    {
+        return Arrays.hashCode(string);
+    }
+}