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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| using Bn254.Net; | ||
| using NetBn254 = Bn254.Net; | ||
|
|
||
| namespace AElf.Cryptography.Bn254 | ||
| { | ||
| public static class Bn254Helper | ||
| { | ||
| public static (byte[] x, byte[] y) Bn254G1Mul(byte[] x1, byte[] y1, byte[] s) | ||
| { | ||
| var (xUInt256, yUInt256) = NetBn254.Bn254.Mul(UInt256.FromBigEndianBytes(x1), | ||
| UInt256.FromBigEndianBytes(y1), | ||
| UInt256.FromBigEndianBytes(s)); | ||
| return (xUInt256.ToBigEndianBytes(), yUInt256.ToBigEndianBytes()); | ||
| } | ||
|
|
||
| public static (byte[] x3, byte[] y3) Bn254G1Add(byte[] x1, byte[] y1, byte[] x2, byte[] y2) | ||
| { | ||
| var (x3UInt256, y3UInt256) = NetBn254.Bn254.Add(UInt256.FromBigEndianBytes(x1), | ||
| UInt256.FromBigEndianBytes(y1), | ||
| UInt256.FromBigEndianBytes(x2), UInt256.FromBigEndianBytes(y2)); | ||
| return (x3UInt256.ToBigEndianBytes(), y3UInt256.ToBigEndianBytes()); | ||
| } | ||
|
|
||
| public static bool Bn254Pairing((byte[], byte[], byte[], byte[], byte[], byte[])[] input) | ||
| { | ||
| var elements = new (UInt256, UInt256, UInt256, UInt256, UInt256, UInt256)[input.Length]; | ||
| for (var i = 0; i < input.Length; i++) | ||
| { | ||
| var (x1, y1, x2, y2, x3, y3) = input[i]; | ||
| elements[i] = (UInt256.FromBigEndianBytes(x1), UInt256.FromBigEndianBytes(y1), | ||
| UInt256.FromBigEndianBytes(x2), UInt256.FromBigEndianBytes(y2), | ||
| UInt256.FromBigEndianBytes(x3), UInt256.FromBigEndianBytes(y3)); | ||
| } | ||
|
|
||
| return NetBn254.Bn254.Pairing(elements); | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,22 @@ | ||
| using System; | ||
| using Rebex.Security.Cryptography; | ||
|
|
||
| namespace AElf.Cryptography.EdDSA | ||
| { | ||
| public static class EdDsaHelper | ||
| { | ||
| public static bool Ed25519Verify(byte[] signature, byte[] message, byte[] publicKey) | ||
| { | ||
| try | ||
| { | ||
| var instance = new Ed25519(); | ||
| instance.FromPublicKey(publicKey); | ||
| return instance.VerifyMessage(message, signature); | ||
| } | ||
| catch (Exception e) | ||
| { | ||
| return false; | ||
| } | ||
| } | ||
| } | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,12 @@ | ||
| using Nethereum.Util; | ||
|
|
||
| namespace AElf.Cryptography.Keccak | ||
| { | ||
| public static class KeccakHelper | ||
| { | ||
| public static byte[] Keccak256(byte[] message) | ||
| { | ||
| return Sha3Keccack.Current.CalculateHash(message); | ||
| } | ||
| } | ||
| } |
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