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| using Neo.Cryptography.BLS12_381; | ||
| using Neo.VM.Types; | ||
| using System; | ||
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| namespace Neo.SmartContract.Native; | ||
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| partial class CryptoLib | ||
| { | ||
| /// <summary> | ||
| /// Serialize a bls12381 point. | ||
| /// </summary> | ||
| /// <param name="g">The point to be serialized.</param> | ||
| /// <returns></returns> | ||
| [ContractMethod(CpuFee = 1 << 19)] | ||
| public static byte[] Bls12381Serialize(InteropInterface g) | ||
| { | ||
| return g.GetInterface<object>() switch | ||
| { | ||
| G1Affine p => p.ToCompressed(), | ||
| G1Projective p => new G1Affine(p).ToCompressed(), | ||
| G2Affine p => p.ToCompressed(), | ||
| G2Projective p => new G2Affine(p).ToCompressed(), | ||
| Gt p => p.ToArray(), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:type mismatch") | ||
| }; | ||
| } | ||
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| /// <summary> | ||
| /// Deserialize a bls12381 point. | ||
| /// </summary> | ||
| /// <param name="data">The point as byte array.</param> | ||
| /// <returns></returns> | ||
| [ContractMethod(CpuFee = 1 << 19)] | ||
| public static InteropInterface Bls12381Deserialize(byte[] data) | ||
| { | ||
| return data.Length switch | ||
| { | ||
| 48 => new InteropInterface(G1Affine.FromCompressed(data)), | ||
| 96 => new InteropInterface(G2Affine.FromCompressed(data)), | ||
| 576 => new InteropInterface(Gt.FromBytes(data)), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:valid point length"), | ||
| }; | ||
| } | ||
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| /// <summary> | ||
| /// Determines whether the specified points are equal. | ||
| /// </summary> | ||
| /// <param name="x">The first point.</param> | ||
| /// <param name="y">Teh second point.</param> | ||
| /// <returns><c>true</c> if the specified points are equal; otherwise, <c>false</c>.</returns> | ||
| [ContractMethod(CpuFee = 1 << 5)] | ||
| public static bool Bls12381Equal(InteropInterface x, InteropInterface y) | ||
| { | ||
| return (x.GetInterface<object>(), y.GetInterface<object>()) switch | ||
| { | ||
| (G1Affine p1, G1Affine p2) => p1.Equals(p2), | ||
| (G1Projective p1, G1Projective p2) => p1.Equals(p2), | ||
| (G2Affine p1, G2Affine p2) => p1.Equals(p2), | ||
| (G2Projective p1, G2Projective p2) => p1.Equals(p2), | ||
| (Gt p1, Gt p2) => p1.Equals(p2), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:type mismatch") | ||
| }; | ||
| } | ||
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| /// <summary> | ||
| /// Add operation of two points. | ||
| /// </summary> | ||
| /// <param name="x">The first point.</param> | ||
| /// <param name="y">The second point.</param> | ||
| /// <returns></returns> | ||
| [ContractMethod(CpuFee = 1 << 19)] | ||
| public static InteropInterface Bls12381Add(InteropInterface x, InteropInterface y) | ||
| { | ||
| return (x.GetInterface<object>(), y.GetInterface<object>()) switch | ||
| { | ||
| (G1Affine p1, G1Affine p2) => new(new G1Projective(p1) + p2), | ||
| (G1Affine p1, G1Projective p2) => new(p1 + p2), | ||
| (G1Projective p1, G1Affine p2) => new(p1 + p2), | ||
| (G1Projective p1, G1Projective p2) => new(p1 + p2), | ||
| (G2Affine p1, G2Affine p2) => new(new G2Projective(p1) + p2), | ||
| (G2Affine p1, G2Projective p2) => new(p1 + p2), | ||
| (G2Projective p1, G2Affine p2) => new(p1 + p2), | ||
| (G2Projective p1, G2Projective p2) => new(p1 + p2), | ||
| (Gt p1, Gt p2) => new(p1 + p2), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:type mismatch") | ||
| }; | ||
| } | ||
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| /// <summary> | ||
| /// Mul operation of gt point and multiplier | ||
| /// </summary> | ||
| /// <param name="x">The point</param> | ||
| /// <param name="mul">Multiplier,32 bytes,little-endian</param> | ||
| /// <param name="neg">negative number</param> | ||
| /// <returns></returns> | ||
| [ContractMethod(CpuFee = 1 << 21)] | ||
| public static InteropInterface Bls12381Mul(InteropInterface x, byte[] mul, bool neg) | ||
| { | ||
| Scalar X = neg ? -Scalar.FromBytes(mul) : Scalar.FromBytes(mul); | ||
| return x.GetInterface<object>() switch | ||
| { | ||
| G1Affine p => new(p * X), | ||
| G1Projective p => new(p * X), | ||
| G2Affine p => new(p * X), | ||
| G2Projective p => new(p * X), | ||
| Gt p => new(p * X), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:type mismatch") | ||
| }; | ||
| } | ||
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| /// <summary> | ||
| /// Pairing operation of g1 and g2 | ||
| /// </summary> | ||
| /// <param name="g1">The g1 point.</param> | ||
| /// <param name="g2">The g2 point.</param> | ||
| /// <returns></returns> | ||
| [ContractMethod(CpuFee = 1 << 23)] | ||
| public static InteropInterface Bls12381Pairing(InteropInterface g1, InteropInterface g2) | ||
| { | ||
| G1Affine g1a = g1.GetInterface<object>() switch | ||
| { | ||
| G1Affine g => g, | ||
| G1Projective g => new(g), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:type mismatch") | ||
| }; | ||
| G2Affine g2a = g2.GetInterface<object>() switch | ||
| { | ||
| G2Affine g => g, | ||
| G2Projective g => new(g), | ||
| _ => throw new ArgumentException($"Bls12381 operation fault, type:format, error:type mismatch") | ||
| }; | ||
| return new(Bls12.Pairing(in g1a, in g2a)); | ||
| } | ||
| } |
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