1 files changed, 1 insertions, 18 deletions
diff --git a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Point.java b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Point.java
index 9c955605..114623dc 100644
--- a/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Point.java
+++ b/core/src/main/java/org/bouncycastle/math/ec/custom/sec/SecP224K1Point.java
@@ -6,7 +6,7 @@ import org.bouncycastle.math.ec.ECPoint;
 import org.bouncycastle.math.raw.Nat;
 import org.bouncycastle.math.raw.Nat224;
 
-public class SecP224K1Point extends ECPoint
+public class SecP224K1Point extends ECPoint.AbstractFp
 {
     /**
      * Create a point which encodes with point compression.
@@ -65,11 +65,6 @@ public class SecP224K1Point extends ECPoint
         return new SecP224K1Point(null, getAffineXCoord(), getAffineYCoord());
     }
 
-    protected boolean getCompressionYTilde()
-    {
-        return this.getAffineYCoord().testBitZero();
-    }
-
     // B.3 pg 62
     public ECPoint add(ECPoint b)
     {
@@ -291,18 +286,6 @@ public class SecP224K1Point extends ECPoint
         return twice().add(this);
     }
 
-    // D.3.2 pg 102 (see Note:)
-    public ECPoint subtract(ECPoint b)
-    {
-        if (b.isInfinity())
-        {
-            return this;
-        }
-
-        // Add -b
-        return add(b.negate());
-    }
-
     public ECPoint negate()
     {
         if (this.isInfinity())