From 18ff90793f2507bb62e3096c11c273a5f8ba9cfc Mon Sep 17 00:00:00 2001
From: "harald.bratko" <harald.bratko@d688527b-c9ab-4aba-bd8d-4036d912da1d>
Date: Thu, 2 Jun 2005 15:58:51 +0000
Subject: Updated for new IAIK ECC library.

git-svn-id: https://joinup.ec.europa.eu/svn/moa-idspss/trunk@347 d688527b-c9ab-4aba-bd8d-4036d912da1d
---
 .../moa/id/util/ECDSAKeyValueConverter.java        | 42 +++++++++++-----------
 1 file changed, 20 insertions(+), 22 deletions(-)

(limited to 'id.server/src/at/gv/egovernment')

diff --git a/id.server/src/at/gv/egovernment/moa/id/util/ECDSAKeyValueConverter.java b/id.server/src/at/gv/egovernment/moa/id/util/ECDSAKeyValueConverter.java
index adb28d4ed..2567cd739 100644
--- a/id.server/src/at/gv/egovernment/moa/id/util/ECDSAKeyValueConverter.java
+++ b/id.server/src/at/gv/egovernment/moa/id/util/ECDSAKeyValueConverter.java
@@ -1,20 +1,16 @@
 package at.gv.egovernment.moa.id.util;
 
-import iaik.ixsil.util.URI;
-
 import iaik.security.ecc.ecdsa.ECDSAParameter;
 import iaik.security.ecc.ecdsa.ECPublicKey;
-//import iaik.security.ecc.interfaces.ECDSAPublicKey;
+import iaik.security.ecc.math.ecgroup.AffineCoordinate;
+import iaik.security.ecc.math.ecgroup.Coordinate;
+import iaik.security.ecc.math.ecgroup.CoordinateTypes;
 import iaik.security.ecc.math.ecgroup.ECGroupFactory;
 import iaik.security.ecc.math.ecgroup.ECPoint;
 import iaik.security.ecc.math.ecgroup.EllipticCurve;
-import iaik.security.ecc.math.ecgroup.ProjectiveCoordinate;
-//import iaik.security.ecc.math.field.BinaryField;
-//import iaik.security.ecc.math.field.BinaryFieldValue;
 import iaik.security.ecc.math.field.Field;
 import iaik.security.ecc.math.field.FieldElement;
-import iaik.security.ecc.math.field.FieldFactory;
-import iaik.security.ecc.math.field.Value;
+import iaik.security.ecc.math.field.PrimeField;
 import iaik.security.ecc.parameter.ECCParameterFactory;
 import iaik.security.ecc.spec.ECCParameterSpec;
 
@@ -25,15 +21,11 @@ import java.util.Iterator;
 import java.util.Vector;
 
 import org.w3c.dom.Attr;
-import org.w3c.dom.Document;
 import org.w3c.dom.Element;
 import org.w3c.dom.NamedNodeMap;
 import org.w3c.dom.Node;
 import org.w3c.dom.NodeList;
 
-//import at.gv.cio.identitylink.init.Constants;
-import at.gv.egovernment.moa.id.util.ECDSAConstants;
-
 public class ECDSAKeyValueConverter
 { 
     
@@ -49,7 +41,7 @@ public class ECDSAKeyValueConverter
    * 
    * @author gregor karlinger
    */
-public static PublicKey element2ECDSAPublicKey(Element keyValueElem) throws Exception
+	public static PublicKey element2ECDSAPublicKey(Element keyValueElem) throws Exception
   {
     String ecdsaNS = ECDSAConstants.NAMESPACE_ECDSAKEYVALUE_;
 
@@ -170,10 +162,10 @@ public static PublicKey element2ECDSAPublicKey(Element keyValueElem) throws Exce
     Element publicKeyYElem = getChildElement(publicKeyElem, ecdsaNS, "Y", 1);
     String publicKeyYStr = publicKeyYElem.getAttributeNS(null, "Value");
 
-    ECDSAParameter ecdsaParams = new ECDSAParameter(eccParameterSpec, false);
+    ECDSAParameter ecdsaParams = new ECDSAParameter(eccParameterSpec, CoordinateTypes.PROJECTIVE_COORDINATES);
     ECGroupFactory ecGroupFactory = ECGroupFactory.getInstance();
-    EllipticCurve eCurve = ecGroupFactory.getCurveWithProjective(eccParameterSpec.getA(),
-      eccParameterSpec.getB(), eccParameterSpec.getR());
+    EllipticCurve eCurve = ecGroupFactory.getCurve(eccParameterSpec.getA(),
+        eccParameterSpec.getB(), eccParameterSpec.getR(), CoordinateTypes.PROJECTIVE_COORDINATES);
     Field field = eCurve.getField();
 
     // Detect type of public key field elements
@@ -187,18 +179,24 @@ public static PublicKey element2ECDSAPublicKey(Element keyValueElem) throws Exce
     FieldElement publicKeyPointX, publicKeyPointY;
     if (fieldElemType == FIELD_TYPE_PRIME)
     {
-      Value xValue = FieldFactory.getInstance().getPrimeFieldValue(new BigInteger(publicKeyXStr, 10));
-      publicKeyPointX = field.newElement(xValue);
-      Value yValue = FieldFactory.getInstance().getPrimeFieldValue(new BigInteger(publicKeyYStr, 10));
-      publicKeyPointY = field.newElement(yValue);
+
+//    Value xValue = FieldFactory.getInstance().getPrimeFieldValue(new BigInteger(publicKeyXStr, 10));
+//    publicKeyPointX = field.newElement(xValue);
+    PrimeField pf = (PrimeField) field;
+    publicKeyPointX = pf.newElement(new BigInteger(publicKeyXStr, 10));
+//    Value yValue = FieldFactory.getInstance().getPrimeFieldValue(new BigInteger(publicKeyYStr, 10));
+//    publicKeyPointY = field.newElement(yValue);
+    publicKeyPointY = pf.newElement(new BigInteger(publicKeyYStr, 10));
     }
     else
     {
       publicKeyPointX = field.newElement(octetString2ByteArray(publicKeyXStr));
       publicKeyPointY = field.newElement(octetString2ByteArray(publicKeyYStr));
     }
-    ProjectiveCoordinate publicKeyPointCoordinate = new ProjectiveCoordinate(publicKeyPointX,
-      publicKeyPointY, field.getONEelement());
+//    ProjectiveCoordinate publicKeyPointCoordinate = new ProjectiveCoordinate(publicKeyPointX,
+//      publicKeyPointY, field.getONEelement());
+    Coordinate publicKeyPointCoordinate = new AffineCoordinate(publicKeyPointX,
+        publicKeyPointY).toProjective();
     ECPoint publicKeyPoint = eCurve.newPoint(publicKeyPointCoordinate);
     ECPublicKey publicKey = new ECPublicKey(ecdsaParams, publicKeyPoint);
 
-- 
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