46 lines
1.2 KiB
C#
46 lines
1.2 KiB
C#
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using System;
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using Sodium;
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namespace TeleTok
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{
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public class CryptographyService
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{
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public string ToHexString(byte[] input)
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{
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var hexString = BitConverter.ToString(input);
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string result = hexString.Replace("-", "");
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return result.ToLower();
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}
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public byte[] GenerateLoginDigest()
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{
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long now = DateTimeOffset.UtcNow.ToUnixTimeSeconds() * 1000;
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var message = $"login:{now / 1000 / (5 * 60)}";
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return GenericHash.Hash(message, (byte[]?) null, 32);
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}
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public KeyPair GenerateEd25519KeyPair(string seed)
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{
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byte[] hash = GenericHash.Hash(seed, (byte[]?) null, 32);
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return PublicKeyAuth.GenerateKeyPair(hash);
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}
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public string GenerateHexSignature(byte[] loginDigest, byte[] secretKey)
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{
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byte[] signature = PublicKeyAuth.SignDetached(loginDigest, secretKey);
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return ToHexString(signature);
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}
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public string GenerateHexId(byte[] publicKey)
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{
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byte[] hash = GenericHash.Hash(publicKey, null, publicKey.Length);
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return ToHexString(hash);
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}
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}
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}
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