1 files changed, 43 insertions, 0 deletions
diff --git a/src/cz/crcs/ectester/common/ec/CustomECFieldFp.java b/src/cz/crcs/ectester/common/ec/CustomECFieldFp.java
new file mode 100644
index 0000000..eafcb72
--- /dev/null
+++ b/src/cz/crcs/ectester/common/ec/CustomECFieldFp.java
@@ -0,0 +1,43 @@
+package cz.crcs.ectester.common.ec;
+
+import java.math.BigInteger;
+import java.security.spec.ECFieldFp;
+
+/**
+ * @author David Hofman
+ */
+public class CustomECFieldFp extends ECFieldFp {
+    private BigInteger p;
+
+    public CustomECFieldFp(BigInteger p) {
+        //feed the constructor of the superclass some default, valid parameter p
+        //getters will return custom (and possibly invalid) data
+        super(BigInteger.ONE);
+        this.p = p;
+    }
+
+
+    @Override
+    public int getFieldSize() {
+        return p.bitCount();
+    }
+
+    @Override
+    public BigInteger getP() {
+        return p;
+    }
+
+    @Override
+    public boolean equals(Object o) {
+        if (this == o) {
+            return true;
+        } else {
+            return o instanceof CustomECFieldFp && p.equals(((CustomECFieldFp) o).p);
+        }
+    }
+
+    @Override
+    public int hashCode() {
+        return p.hashCode();
+    }
+}