44 lines
1.5 KiB
C#
44 lines
1.5 KiB
C#
using System.Collections.Generic;
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using System;
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using chestcrypto.exceptions;
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namespace chestcrypto{
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namespace session{
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internal class Session{
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// Create List of tuples(time, byte[])
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// Where the tuple contains a time stamp for expiry and a ed25519 key
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private List<(long, byte[])> ourPrivateKeys;
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private List<(long, byte[])> theirPublicKeys;
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private byte[] ourMasterPrivateKey;
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private byte[] theirMasterPublicKey;
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private bool strictMode;
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private const int minimumKeyExpireSeconds = 60;
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public Session(byte[] masterPrivate, byte[] masterPublic, bool strictMode){
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if(masterPrivate.Length != 32 | masterPublic.Length != 32){throw new InvalidKeyLength();}
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ourMasterPrivateKey = masterPrivate;
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theirMasterPublicKey = masterPublic;
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this.strictMode = strictMode;
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ourPrivateKeys = new List<(long, byte[])>();
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theirPublicKeys = new List<(long, byte[])>();
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}
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public void addPublic(byte[] publicKey, long timestamp){
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if (timestamp < DateTimeOffset.UtcNow.ToUnixTimeSeconds() + minimumKeyExpireSeconds){
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throw new ArgumentOutOfRangeException();
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}
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theirPublicKeys.Add((timestamp, publicKey));
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}
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public byte[] getLatestPublicKey(){return theirPublicKeys[theirPublicKeys.Count - 1].Item2;}
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}
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}
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} |