1 files changed, 121 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jce/spec/ECParameterSpec.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jce/spec/ECParameterSpec.java
new file mode 100644
index 000000000..f0f00e8c4
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jce/spec/ECParameterSpec.java
@@ -0,0 +1,121 @@
+package org.spongycastle.jce.spec;
+
+import org.spongycastle.math.ec.ECCurve;
+import org.spongycastle.math.ec.ECPoint;
+
+import java.math.BigInteger;
+import java.security.spec.AlgorithmParameterSpec;
+
+/**
+ * basic domain parameters for an Elliptic Curve public or private key.
+ */
+public class ECParameterSpec
+    implements AlgorithmParameterSpec
+{
+    private ECCurve     curve;
+    private byte[]      seed;
+    private ECPoint     G;
+    private BigInteger  n;
+    private BigInteger  h;
+
+    public ECParameterSpec(
+        ECCurve     curve,
+        ECPoint     G,
+        BigInteger  n)
+    {
+        this.curve = curve;
+        this.G = G.normalize();
+        this.n = n;
+        this.h = BigInteger.valueOf(1);
+        this.seed = null;
+    }
+
+    public ECParameterSpec(
+        ECCurve     curve,
+        ECPoint     G,
+        BigInteger  n,
+        BigInteger  h)
+    {
+        this.curve = curve;
+        this.G = G.normalize();
+        this.n = n;
+        this.h = h;
+        this.seed = null;
+    }
+
+    public ECParameterSpec(
+        ECCurve     curve,
+        ECPoint     G,
+        BigInteger  n,
+        BigInteger  h,
+        byte[]      seed)
+    {
+        this.curve = curve;
+        this.G = G.normalize();
+        this.n = n;
+        this.h = h;
+        this.seed = seed;
+    }
+
+    /**
+     * return the curve along which the base point lies.
+     * @return the curve
+     */
+    public ECCurve getCurve()
+    {
+        return curve;
+    }
+
+    /**
+     * return the base point we are using for these domain parameters.
+     * @return the base point.
+     */
+    public ECPoint getG()
+    {
+        return G;
+    }
+
+    /**
+     * return the order N of G
+     * @return the order
+     */
+    public BigInteger getN()
+    {
+        return n;
+    }
+
+    /**
+     * return the cofactor H to the order of G.
+     * @return the cofactor
+     */
+    public BigInteger getH()
+    {
+        return h;
+    }
+
+    /**
+     * return the seed used to generate this curve (if available).
+     * @return the random seed
+     */
+    public byte[] getSeed()
+    {
+        return seed;
+    }
+
+    public boolean equals(Object o)
+    {
+        if (!(o instanceof ECParameterSpec))
+        {
+            return false;
+        }
+
+        ECParameterSpec other = (ECParameterSpec)o;
+
+        return this.getCurve().equals(other.getCurve()) && this.getG().equals(other.getG());
+    }
+
+    public int hashCode()
+    {
+        return this.getCurve().hashCode() ^ this.getG().hashCode();
+    }
+}