diff --git a/crypto/src/math/ec/custom/sec/SecP256R1Curve.cs b/crypto/src/math/ec/custom/sec/SecP256R1Curve.cs
new file mode 100644
index 000000000..252ec345f
--- /dev/null
+++ b/crypto/src/math/ec/custom/sec/SecP256R1Curve.cs
@@ -0,0 +1,95 @@
+using System;
+
+using Org.BouncyCastle.Math.Field;
+using Org.BouncyCastle.Utilities.Encoders;
+
+namespace Org.BouncyCastle.Math.EC.Custom.Sec
+{
+ internal class SecP256R1Curve
+ : ECCurve
+ {
+ public static readonly BigInteger q = new BigInteger(1,
+ Hex.Decode("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF"));
+
+ private const int SecP256R1_DEFAULT_COORDS = COORD_JACOBIAN;
+
+ protected readonly SecP256R1Point m_infinity;
+
+ public SecP256R1Curve()
+ : base(FiniteFields.GetPrimeField(q))
+ {
+ this.m_infinity = new SecP256R1Point(this, null, null);
+
+ this.m_a = FromBigInteger(new BigInteger(1,
+ Hex.Decode("FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC")));
+ this.m_b = FromBigInteger(new BigInteger(1,
+ Hex.Decode("5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B")));
+ //this.order = new BigInteger(1, Hex.decode("FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551"));
+ //this.cofactor = BigInteger.valueOf(1);
+ this.m_coord = SecP256R1_DEFAULT_COORDS;
+ }
+
+ protected override ECCurve CloneCurve()
+ {
+ return new SecP256R1Curve();
+ }
+
+ public override bool SupportsCoordinateSystem(int coord)
+ {
+ switch (coord)
+ {
+ case COORD_JACOBIAN:
+ return true;
+ default:
+ return false;
+ }
+ }
+
+ public virtual BigInteger Q
+ {
+ get { return q; }
+ }
+
+ public override ECPoint Infinity
+ {
+ get { return m_infinity; }
+ }
+
+ public override int FieldSize
+ {
+ get { return q.BitLength; }
+ }
+
+ public override ECFieldElement FromBigInteger(BigInteger x)
+ {
+ return new SecP256R1FieldElement(x);
+ }
+
+ protected internal override ECPoint CreateRawPoint(ECFieldElement x, ECFieldElement y, bool withCompression)
+ {
+ return new SecP256R1Point(this, x, y, withCompression);
+ }
+
+ protected override ECPoint DecompressPoint(int yTilde, BigInteger X1)
+ {
+ ECFieldElement x = FromBigInteger(X1);
+ ECFieldElement alpha = x.Square().Add(m_a).Multiply(x).Add(m_b);
+ ECFieldElement beta = alpha.Sqrt();
+
+ //
+ // if we can't find a sqrt we haven't got a point on the
+ // curve - run!
+ //
+ if (beta == null)
+ throw new ArithmeticException("Invalid point compression");
+
+ if (beta.TestBitZero() != (yTilde == 1))
+ {
+ // Use the other root
+ beta = beta.Negate();
+ }
+
+ return new SecP256R1Point(this, x, beta, true);
+ }
+ }
+}
diff --git a/crypto/src/math/ec/custom/sec/SecP256R1Field.cs b/crypto/src/math/ec/custom/sec/SecP256R1Field.cs
new file mode 100644
index 000000000..baea02dd0
--- /dev/null
+++ b/crypto/src/math/ec/custom/sec/SecP256R1Field.cs
@@ -0,0 +1,175 @@
+using System;
+using System.Diagnostics;
+
+namespace Org.BouncyCastle.Math.EC.Custom.Sec
+{
+ internal class SecP256R1Field
+ {
+ // 2^256 - 2^224 + 2^192 + 2^96 - 1
+ internal static readonly uint[] P = new uint[]{ 0xFFFFFFFF, 0xFFFFFFFF, 0xFFFFFFFF, 0x00000000, 0x00000000, 0x00000000,
+ 0x00000001, 0xFFFFFFFF };
+ private const uint P7 = 0xFFFFFFFF;
+ private static readonly uint[] PExt = new uint[]{ 0x00000001, 0x00000000, 0x00000000, 0xFFFFFFFE, 0xFFFFFFFF,
+ 0xFFFFFFFF, 0xFFFFFFFE, 0x00000001, 0xFFFFFFFE, 0x00000001, 0xFFFFFFFE, 0x00000001, 0x00000001, 0xFFFFFFFE,
+ 0x00000002, 0xFFFFFFFE };
+
+ public static void Add(uint[] x, uint[] y, uint[] z)
+ {
+ uint c = Nat256.Add(x, y, z);
+ if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+ {
+ Nat256.Sub(z, P, z);
+ }
+ }
+
+ public static void AddExt(uint[] xx, uint[] yy, uint[] zz)
+ {
+ uint c = Nat256.AddExt(xx, yy, zz);
+ if (c != 0 || Nat256.GteExt(zz, PExt))
+ {
+ Nat256.SubExt(zz, PExt, zz);
+ }
+ }
+
+ public static void AddOne(uint[] x, uint[] z)
+ {
+ Array.Copy(x, 0, z, 0, 8);
+ uint c = Nat256.Inc(z, 0);
+ if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+ {
+ Nat256.Sub(z, P, z);
+ }
+ }
+
+ public static uint[] FromBigInteger(BigInteger x)
+ {
+ uint[] z = Nat256.FromBigInteger(x);
+ if (z[7] == P7 && Nat256.Gte(z, P))
+ {
+ Nat256.Sub(z, P, z);
+ }
+ return z;
+ }
+
+ public static void Half(uint[] x, uint[] z)
+ {
+ if ((x[0] & 1) == 0)
+ {
+ Nat256.ShiftDownBit(x, 0, z);
+ }
+ else
+ {
+ uint c = Nat256.Add(x, P, z);
+ Nat256.ShiftDownBit(z, c, z);
+ }
+ }
+
+ public static void Multiply(uint[] x, uint[] y, uint[] z)
+ {
+ uint[] tt = Nat256.CreateExt();
+ Nat256.Mul(x, y, tt);
+ Reduce(tt, z);
+ }
+
+ public static void Negate(uint[] x, uint[] z)
+ {
+ if (Nat256.IsZero(x))
+ {
+ Nat256.Zero(z);
+ }
+ else
+ {
+ Nat256.Sub(P, x, z);
+ }
+ }
+
+ public static void Reduce(uint[] tt, uint[] z)
+ {
+ long t08 = tt[8], t09 = tt[9], t10 = tt[10], t11 = tt[11];
+ long t12 = tt[12], t13 = tt[13], t14 = tt[14], t15 = tt[15];
+
+ long cc = 0;
+ cc += (long)tt[0] + t08 + t09 - t11 - t12 - t13 - t14;
+ z[0] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[1] + t09 + t10 - t12 - t13 - t14 - t15;
+ z[1] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[2] + t10 + t11 - t13 - t14 - t15;
+ z[2] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[3] + ((t11 + t12) << 1) + t13 - t15 - t08 - t09;
+ z[3] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[4] + ((t12 + t13) << 1) + t14 - t09 - t10;
+ z[4] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[5] + ((t13 + t14) << 1) + t15 - t10 - t11;
+ z[5] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[6] + ((t14 + t15) << 1) + t14 + t13 - t08 - t09;
+ z[6] = (uint)cc;
+ cc >>= 32;
+ cc += (long)tt[7] + (t15 << 1) + t15 + t08 - t10 - t11 - t12 - t13;
+ z[7] = (uint)cc;
+ cc >>= 32;
+
+ int c = (int)cc;
+ if (c > 0)
+ {
+ do
+ {
+ c += Nat256.Sub(z, P, z);
+ }
+ while (c != 0);
+
+ if (z[7] == P7 && Nat256.Gte(z, P))
+ {
+ Nat256.Sub(z, P, z);
+ }
+ }
+ else if (c < 0)
+ {
+ do
+ {
+ c += (int)Nat256.Add(z, P, z);
+ }
+ while (c != 0);
+ }
+ }
+
+ public static void Square(uint[] x, uint[] z)
+ {
+ uint[] tt = Nat256.CreateExt();
+ Nat256.Square(x, tt);
+ Reduce(tt, z);
+ }
+
+ public static void Subtract(uint[] x, uint[] y, uint[] z)
+ {
+ int c = Nat256.Sub(x, y, z);
+ if (c != 0)
+ {
+ Nat256.Add(z, P, z);
+ }
+ }
+
+ public static void SubtractExt(uint[] xx, uint[] yy, uint[] zz)
+ {
+ int c = Nat256.SubExt(xx, yy, zz);
+ if (c != 0)
+ {
+ Nat256.AddExt(zz, PExt, zz);
+ }
+ }
+
+ public static void Twice(uint[] x, uint[] z)
+ {
+ uint c = Nat256.ShiftUpBit(x, 0, z);
+ if (c != 0 || (z[7] == P7 && Nat256.Gte(z, P)))
+ {
+ Nat256.Sub(z, P, z);
+ }
+ }
+ }
+}
diff --git a/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs b/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs
new file mode 100644
index 000000000..edb4754ba
--- /dev/null
+++ b/crypto/src/math/ec/custom/sec/SecP256R1FieldElement.cs
@@ -0,0 +1,157 @@
+using System;
+using System.Diagnostics;
+
+using Org.BouncyCastle.Utilities;
+
+namespace Org.BouncyCastle.Math.EC.Custom.Sec
+{
+ public class SecP256R1FieldElement
+ : ECFieldElement
+ {
+ public static readonly BigInteger Q = SecP256R1Curve.q;
+
+ protected internal readonly uint[] x;
+
+ public SecP256R1FieldElement(BigInteger x)
+ {
+ if (x == null || x.SignValue < 0 || x.CompareTo(Q) >= 0)
+ throw new ArgumentException("value invalid for SecP256R1FieldElement", "x");
+
+ this.x = SecP256R1Field.FromBigInteger(x);
+ }
+
+ public SecP256R1FieldElement()
+ {
+ this.x = Nat256.Create();
+ }
+
+ protected internal SecP256R1FieldElement(uint[] x)
+ {
+ this.x = x;
+ }
+
+ public override bool IsZero
+ {
+ get { return Nat256.IsZero(x); }
+ }
+
+ public override bool IsOne
+ {
+ get { return Nat256.IsOne(x); }
+ }
+
+ public override bool TestBitZero()
+ {
+ return Nat256.GetBit(x, 0) == 1;
+ }
+
+ public override BigInteger ToBigInteger()
+ {
+ return Nat256.ToBigInteger(x);
+ }
+
+ public override string FieldName
+ {
+ get { return "SecP256R1Field"; }
+ }
+
+ public override int FieldSize
+ {
+ get { return Q.BitLength; }
+ }
+
+ public override ECFieldElement Add(ECFieldElement b)
+ {
+ uint[] z = Nat256.Create();
+ SecP256R1Field.Add(x, ((SecP256R1FieldElement)b).x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement AddOne()
+ {
+ uint[] z = Nat256.Create();
+ SecP256R1Field.AddOne(x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement Subtract(ECFieldElement b)
+ {
+ uint[] z = Nat256.Create();
+ SecP256R1Field.Subtract(x, ((SecP256R1FieldElement)b).x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement Multiply(ECFieldElement b)
+ {
+ uint[] z = Nat256.Create();
+ SecP256R1Field.Multiply(x, ((SecP256R1FieldElement)b).x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement Divide(ECFieldElement b)
+ {
+ //return Multiply(b.Invert());
+ uint[] z = Nat256.Create();
+ Mod.Invert(SecP256R1Field.P, ((SecP256R1FieldElement)b).x, z);
+ SecP256R1Field.Multiply(z, x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement Negate()
+ {
+ uint[] z = Nat256.Create();
+ SecP256R1Field.Negate(x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement Square()
+ {
+ uint[] z = Nat256.Create();
+ SecP256R1Field.Square(x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ public override ECFieldElement Invert()
+ {
+ //return new SecP256R1FieldElement(ToBigInteger().ModInverse(Q));
+ uint[] z = Nat256.Create();
+ Mod.Invert(SecP256R1Field.P, x, z);
+ return new SecP256R1FieldElement(z);
+ }
+
+ // D.1.4 91
+ /**
+ * return a sqrt root - the routine verifies that the calculation returns the right value - if
+ * none exists it returns null.
+ */
+ public override ECFieldElement Sqrt()
+ {
+ ECFieldElement root = new FpFieldElement(Q, ToBigInteger()).Sqrt();
+ return root == null ? null : new SecP256R1FieldElement(root.ToBigInteger());
+ }
+
+ public override bool Equals(object obj)
+ {
+ return Equals(obj as SecP256R1FieldElement);
+ }
+
+ public override bool Equals(ECFieldElement other)
+ {
+ return Equals(other as SecP256R1FieldElement);
+ }
+
+ public virtual bool Equals(SecP256R1FieldElement other)
+ {
+ if (this == other)
+ return true;
+ if (null == other)
+ return false;
+ return Arrays.AreEqual(x, other.x);
+ }
+
+ public override int GetHashCode()
+ {
+ return Q.GetHashCode() ^ Arrays.GetHashCode(x);
+ }
+ }
+}
diff --git a/crypto/src/math/ec/custom/sec/SecP256R1Point.cs b/crypto/src/math/ec/custom/sec/SecP256R1Point.cs
new file mode 100644
index 000000000..11e79678f
--- /dev/null
+++ b/crypto/src/math/ec/custom/sec/SecP256R1Point.cs
@@ -0,0 +1,283 @@
+using System;
+
+namespace Org.BouncyCastle.Math.EC.Custom.Sec
+{
+ internal class SecP256R1Point
+ : ECPointBase
+ {
+ /**
+ * Create a point which encodes with point compression.
+ *
+ * @param curve
+ * the curve to use
+ * @param x
+ * affine x co-ordinate
+ * @param y
+ * affine y co-ordinate
+ *
+ * @deprecated Use ECCurve.createPoint to construct points
+ */
+ public SecP256R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y)
+ : this(curve, x, y, false)
+ {
+ }
+
+ /**
+ * Create a point that encodes with or without point compresion.
+ *
+ * @param curve
+ * the curve to use
+ * @param x
+ * affine x co-ordinate
+ * @param y
+ * affine y co-ordinate
+ * @param withCompression
+ * if true encode with point compression
+ *
+ * @deprecated per-point compression property will be removed, refer
+ * {@link #getEncoded(bool)}
+ */
+ public SecP256R1Point(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 SecP256R1Point(ECCurve curve, ECFieldElement x, ECFieldElement y, ECFieldElement[] zs, bool withCompression)
+ : base(curve, x, y, zs, withCompression)
+ {
+ }
+
+ protected internal override bool CompressionYTilde
+ {
+ get { return this.AffineYCoord.TestBitZero(); }
+ }
+
+ public override ECPoint Add(ECPoint b)
+ {
+ if (this.IsInfinity)
+ return b;
+ if (b.IsInfinity)
+ return this;
+ if (this == b)
+ return Twice();
+
+ ECCurve curve = this.Curve;
+
+ SecP256R1FieldElement X1 = (SecP256R1FieldElement)this.RawXCoord, Y1 = (SecP256R1FieldElement)this.RawYCoord;
+ SecP256R1FieldElement X2 = (SecP256R1FieldElement)b.RawXCoord, Y2 = (SecP256R1FieldElement)b.RawYCoord;
+
+ SecP256R1FieldElement Z1 = (SecP256R1FieldElement)this.RawZCoords[0];
+ SecP256R1FieldElement Z2 = (SecP256R1FieldElement)b.RawZCoords[0];
+
+ uint[] tt1 = Nat256.CreateExt();
+ uint[] tt2 = Nat256.CreateExt();
+ uint[] t3 = Nat256.Create();
+ uint[] t4 = Nat256.Create();
+
+ bool Z1IsOne = Z1.IsOne;
+ uint[] U2, S2;
+ if (Z1IsOne)
+ {
+ U2 = X2.x;
+ S2 = Y2.x;
+ }
+ else
+ {
+ S2 = t3;
+ SecP256R1Field.Square(Z1.x, S2);
+
+ U2 = tt2;
+ SecP256R1Field.Multiply(S2, X2.x, U2);
+
+ SecP256R1Field.Multiply(S2, Z1.x, S2);
+ SecP256R1Field.Multiply(S2, Y2.x, S2);
+ }
+
+ bool Z2IsOne = Z2.IsOne;
+ uint[] U1, S1;
+ if (Z2IsOne)
+ {
+ U1 = X1.x;
+ S1 = Y1.x;
+ }
+ else
+ {
+ S1 = t4;
+ SecP256R1Field.Square(Z2.x, S1);
+
+ U1 = tt1;
+ SecP256R1Field.Multiply(S1, X1.x, U1);
+
+ SecP256R1Field.Multiply(S1, Z2.x, S1);
+ SecP256R1Field.Multiply(S1, Y1.x, S1);
+ }
+
+ uint[] H = Nat256.Create();
+ SecP256R1Field.Subtract(U1, U2, H);
+
+ uint[] R = tt2;
+ SecP256R1Field.Subtract(S1, S2, R);
+
+ // Check if b == this or b == -this
+ if (Nat256.IsZero(H))
+ {
+ if (Nat256.IsZero(R))
+ {
+ // this == b, i.e. this must be doubled
+ return this.Twice();
+ }
+
+ // this == -b, i.e. the result is the point at infinity
+ return curve.Infinity;
+ }
+
+ uint[] HSquared = t3;
+ SecP256R1Field.Square(H, HSquared);
+
+ uint[] G = Nat256.Create();
+ SecP256R1Field.Multiply(HSquared, H, G);
+
+ uint[] V = t3;
+ SecP256R1Field.Multiply(HSquared, U1, V);
+
+ Nat256.Mul(S1, G, tt1);
+
+ SecP256R1FieldElement X3 = new SecP256R1FieldElement(t4);
+ SecP256R1Field.Square(R, X3.x);
+ SecP256R1Field.Add(X3.x, G, X3.x);
+ SecP256R1Field.Subtract(X3.x, V, X3.x);
+ SecP256R1Field.Subtract(X3.x, V, X3.x);
+
+ SecP256R1FieldElement Y3 = new SecP256R1FieldElement(G);
+ SecP256R1Field.Subtract(V, X3.x, Y3.x);
+ Nat256.Mul(Y3.x, R, tt2);
+ SecP256R1Field.SubtractExt(tt2, tt1, tt2);
+ SecP256R1Field.Reduce(tt2, Y3.x);
+
+ SecP256R1FieldElement Z3 = new SecP256R1FieldElement(H);
+ if (!Z1IsOne)
+ {
+ SecP256R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+ }
+ if (!Z2IsOne)
+ {
+ SecP256R1Field.Multiply(Z3.x, Z2.x, Z3.x);
+ }
+
+ ECFieldElement[] zs = new ECFieldElement[]{ Z3 };
+
+ return new SecP256R1Point(curve, X3, Y3, zs, IsCompressed);
+ }
+
+ public override ECPoint Twice()
+ {
+ if (this.IsInfinity)
+ return this;
+
+ ECCurve curve = this.Curve;
+
+ SecP256R1FieldElement Y1 = (SecP256R1FieldElement)this.RawYCoord;
+ if (Y1.IsZero)
+ return curve.Infinity;
+
+ SecP256R1FieldElement X1 = (SecP256R1FieldElement)this.RawXCoord, Z1 = (SecP256R1FieldElement)this.RawZCoords[0];
+
+ uint[] t1 = Nat256.Create();
+ uint[] t2 = Nat256.Create();
+
+ uint[] Y1Squared = Nat256.Create();
+ SecP256R1Field.Square(Y1.x, Y1Squared);
+
+ uint[] T = Nat256.Create();
+ SecP256R1Field.Square(Y1Squared, T);
+
+ bool Z1IsOne = Z1.IsOne;
+
+ uint[] Z1Squared = Z1.x;
+ if (!Z1IsOne)
+ {
+ Z1Squared = t2;
+ SecP256R1Field.Square(Z1.x, Z1Squared);
+ }
+
+ SecP256R1Field.Subtract(X1.x, Z1Squared, t1);
+
+ uint[] M = t2;
+ SecP256R1Field.Add(X1.x, Z1Squared, M);
+ SecP256R1Field.Multiply(M, t1, M);
+ SecP256R1Field.Twice(M, t1);
+ SecP256R1Field.Add(M, t1, M);
+
+ uint[] S = Y1Squared;
+ SecP256R1Field.Multiply(Y1Squared, X1.x, S);
+ SecP256R1Field.Twice(S, S);
+ SecP256R1Field.Twice(S, S);
+
+ SecP256R1Field.Twice(T, t1);
+ SecP256R1Field.Twice(t1, t1);
+ SecP256R1Field.Twice(t1, t1);
+
+ SecP256R1FieldElement X3 = new SecP256R1FieldElement(T);
+ SecP256R1Field.Square(M, X3.x);
+ SecP256R1Field.Subtract(X3.x, S, X3.x);
+ SecP256R1Field.Subtract(X3.x, S, X3.x);
+
+ SecP256R1FieldElement Y3 = new SecP256R1FieldElement(S);
+ SecP256R1Field.Subtract(S, X3.x, Y3.x);
+ SecP256R1Field.Multiply(Y3.x, M, Y3.x);
+ SecP256R1Field.Subtract(Y3.x, t1, Y3.x);
+
+ SecP256R1FieldElement Z3 = new SecP256R1FieldElement(M);
+ SecP256R1Field.Twice(Y1.x, Z3.x);
+ if (!Z1IsOne)
+ {
+ SecP256R1Field.Multiply(Z3.x, Z1.x, Z3.x);
+ }
+
+ return new SecP256R1Point(curve, X3, Y3, new ECFieldElement[]{ Z3 }, IsCompressed);
+ }
+
+ public override ECPoint TwicePlus(ECPoint b)
+ {
+ if (this == b)
+ return ThreeTimes();
+ if (this.IsInfinity)
+ return b;
+ if (b.IsInfinity)
+ return Twice();
+
+ ECFieldElement Y1 = this.RawYCoord;
+ if (Y1.IsZero)
+ return b;
+
+ return Twice().Add(b);
+ }
+
+ public override ECPoint ThreeTimes()
+ {
+ if (this.IsInfinity || this.RawYCoord.IsZero)
+ return this;
+
+ // NOTE: Be careful about recursions between TwicePlus and ThreeTimes
+ return Twice().Add(this);
+ }
+
+ public override ECPoint Subtract(ECPoint b)
+ {
+ if (b.IsInfinity)
+ return this;
+
+ return Add(b.Negate());
+ }
+
+ public override ECPoint Negate()
+ {
+ if (IsInfinity)
+ return this;
+
+ return new SecP256R1Point(Curve, RawXCoord, RawYCoord.Negate(), RawZCoords, IsCompressed);
+ }
+ }
+}
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