From 7ca8774497c8e5c46fb67369909d4d9a87cbeb3f Mon Sep 17 00:00:00 2001
From: Peter Dettman <peter.dettman@gmail.com>
Date: Tue, 21 Jun 2022 21:14:47 +0700
Subject: Remove per-ECPoint compression

---
 crypto/src/math/ec/custom/sec/SecT409R1Point.cs | 37 ++++++++-----------------
 1 file changed, 12 insertions(+), 25 deletions(-)

(limited to 'crypto/src/math/ec/custom/sec/SecT409R1Point.cs')

diff --git a/crypto/src/math/ec/custom/sec/SecT409R1Point.cs b/crypto/src/math/ec/custom/sec/SecT409R1Point.cs
index 546b10795..56b7c444c 100644
--- a/crypto/src/math/ec/custom/sec/SecT409R1Point.cs
+++ b/crypto/src/math/ec/custom/sec/SecT409R1Point.cs
@@ -5,26 +5,13 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
     internal class SecT409R1Point
         : AbstractF2mPoint
     {
-        /**
-         * @deprecated Use ECCurve.createPoint to construct points
-         */
-        public SecT409R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
-            : this(curve, x, y, false)
+        internal SecT409R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+            : base(curve, x, y)
         {
         }
 
-        /**
-         * @deprecated per-point compression property will be removed, refer {@link #getEncoded(bool)}
-         */
-        public SecT409R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, bool withCompression)
-            : base(curve, x, y, withCompression)
-        {
-            if ((x == null) != (y == null))
-                throw new ArgumentException("Exactly one of the field elements is null");
-        }
-
-        internal SecT409R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, bool withCompression)
-            : base(curve, x, y, zs, withCompression)
+        internal SecT409R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs)
+            : base(curve, x, y, zs)
         {
         }
 
@@ -134,7 +121,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
                 X3 = L.Square().Add(L).Add(X1).AddOne();
                 if (X3.IsZero)
                 {
-                    return new SecT409R1Point(curve, X3, curve.B.Sqrt(), IsCompressed);
+                    return new SecT409R1Point(curve, X3, curve.B.Sqrt());
                 }
 
                 ECFieldElement Y3 = L.Multiply(X1.Add(X3)).Add(X3).Add(Y1);
@@ -151,7 +138,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
                 X3 = AU1.Multiply(AU2);
                 if (X3.IsZero)
                 {
-                    return new SecT409R1Point(curve, X3, curve.B.Sqrt(), IsCompressed);
+                    return new SecT409R1Point(curve, X3, curve.B.Sqrt());
                 }
 
                 ECFieldElement ABZ2 = A.Multiply(B);
@@ -169,7 +156,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
                 }
             }
 
-            return new SecT409R1Point(curve, X3, L3, new ECFieldElement[] { Z3 }, IsCompressed);
+            return new SecT409R1Point(curve, X3, L3, new ECFieldElement[] { Z3 });
         }
 
         public override ECPoint Twice()
@@ -194,7 +181,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
             ECFieldElement T = L1.Square().Add(L1Z1).Add(Z1Sq);
             if (T.IsZero)
             {
-                return new SecT409R1Point(curve, T, curve.B.Sqrt(), IsCompressed);
+                return new SecT409R1Point(curve, T, curve.B.Sqrt());
             }
 
             ECFieldElement X3 = T.Square();
@@ -203,7 +190,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
             ECFieldElement X1Z1 = Z1IsOne ? X1 : X1.Multiply(Z1);
             ECFieldElement L3 = X1Z1.SquarePlusProduct(T, L1Z1).Add(X3).Add(Z3);
 
-            return new SecT409R1Point(curve, X3, L3, new ECFieldElement[] { Z3 }, IsCompressed);
+            return new SecT409R1Point(curve, X3, L3, new ECFieldElement[] { Z3 });
         }
 
         public override ECPoint TwicePlus(ECPoint b)
@@ -251,14 +238,14 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
 
             if (A.IsZero)
             {
-                return new SecT409R1Point(curve, A, curve.B.Sqrt(), IsCompressed);
+                return new SecT409R1Point(curve, A, curve.B.Sqrt());
             }
 
             ECFieldElement X3 = A.Square().Multiply(X2Z1Sq);
             ECFieldElement Z3 = A.Multiply(B).Multiply(Z1Sq);
             ECFieldElement L3 = A.Add(B).Square().MultiplyPlusProduct(T, L2.AddOne(), Z3);
 
-            return new SecT409R1Point(curve, X3, L3, new ECFieldElement[] { Z3 }, IsCompressed);
+            return new SecT409R1Point(curve, X3, L3, new ECFieldElement[] { Z3 });
         }
 
         public override ECPoint Negate()
@@ -272,7 +259,7 @@ namespace Org.BouncyCastle.Math.EC.Custom.Sec
 
             // L is actually Lambda (X + Y/X) here
             ECFieldElement L = this.RawYCoord, Z = this.RawZCoords[0];
-            return new SecT409R1Point(Curve, X, L.Add(Z), new ECFieldElement[] { Z }, IsCompressed);
+            return new SecT409R1Point(Curve, X, L.Add(Z), new ECFieldElement[] { Z });
         }
     }
 }
-- 
cgit 1.4.1