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26 lines
1.0 KiB
C#
26 lines
1.0 KiB
C#
//Depends on nuget package NBitcoin (Install-Package NBitcoin)
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Text;
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using NBitcoin;
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using NBitcoin.Crypto;
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using NBitcoin.DataEncoders;
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class Server
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{
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static void Main(string[] args)
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{
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string visual_challenge = "2015-03-23 17:39:22";
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byte[] random_challenge = Encoders.Hex.DecodeData("cd8552569d6e4509266ef137584d1e62c7579b5b8ed69bbafa4b864c6521e7c2");
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byte[] signature = Encoders.Hex.DecodeData("20f2d1a42d08c3a362be49275c3ffeeaa415fc040971985548b9f910812237bb41770bf2c8d488428799fbb7e52c11f1a3404011375e4080e077e0e42ab7a5ba02");
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var hiddenChallenge_Sha = Hashes.SHA256(random_challenge);
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var visualChallenge_Sha = Hashes.SHA256(Encoding.ASCII.GetBytes(visual_challenge));
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PubKey pubKey = new PubKey("023a472219ad3327b07c18273717bb3a40b39b743756bf287fbd5fa9d263237f45");
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bool verified = pubKey.VerifyMessage(hiddenChallenge_Sha.Concat(visualChallenge_Sha).ToArray(), Encoders.Base64.EncodeData(signature));
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Console.WriteLine(verified);
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}
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}
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