2023-05-11 21:27:36 +02:00
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// MIT License
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//
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// Copyright (c) 2016-2022 Mark Qvist / unsigned.io
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// C# Port (c) 2023 Michael Faragher / betweentheborders.com
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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// This is considered pre-alpha of a minimum viable product. No warranties are provided and compatibility is not assured.
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namespace RNS
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{
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public class Identity
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{
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string CURVE = "Curve25519";
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const int KEYSIZE = 256 * 2;
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public const int FERNET_OVERHEAD = RNS.Cryptography.Fernet.FERNET_OVERHEAD;
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public const int AES128_BLOCKSIZE = 16; // In bytes
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2023-10-07 08:06:59 +02:00
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const int HASHLENGTH = 256; // In bits
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2023-05-11 21:27:36 +02:00
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int SIGLENGTH = KEYSIZE; // In bits
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2023-10-07 08:06:59 +02:00
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public const int NAME_HASH_LENGTH = 80;
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public static int TRUNCATED_HASHLENGTH = RNS.Reticulum.TRUNCATED_HASHLENGTH;
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public byte[] Hash = new byte[HASHLENGTH / 8];
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2023-05-11 21:27:36 +02:00
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2023-10-07 08:06:59 +02:00
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List<Destination> known_destinations = new List<Destination>();
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Identity(bool create_keys = false)
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{
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string prv = "";
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byte[] prv_bytes = null;
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string sig_prv = "";
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byte[] sig_prv_bytes = null;
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string pub = "";
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byte[] pub_bytes = null;
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string sig_pub = "";
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byte[] sig_pub_bytes = null;
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//Hash = null;
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//HexHash = null;
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if (create_keys)
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{
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//Create_Keys();
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}
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}
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public string PrettyName
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{
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get { return RNS.Util.PrettyHexRep(Hash); }
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}
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public static byte[] FullHash(byte[] data)
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{
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// Functional, but placing under RNS.Crypto for generalization
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// return System.Security.Cryptography.SHA256.HashData(data);
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return RNS.Cryptography.SHA256(data);
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}
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public static byte[] Truncated_Hash(byte[] data)
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{
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byte[] hash = new byte[TRUNCATED_HASHLENGTH/8];
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byte[] fullhash = FullHash(data);
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Array.Copy(fullhash, fullhash.Length-(TRUNCATED_HASHLENGTH/8), hash, 0, TRUNCATED_HASHLENGTH/8);
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return hash;
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}
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public static byte[] Get_Random_Hash()
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{
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System.Security.Cryptography.RandomNumberGenerator random = System.Security.Cryptography.RandomNumberGenerator.Create();
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byte[] hashseed = new byte[TRUNCATED_HASHLENGTH/8];
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random.GetBytes(hashseed);
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return Truncated_Hash(hashseed);
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}
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public static void Persist_Data()
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{
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//if (!RNS.Transport.owner.isConnectedToSharedInstance)
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//{
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// Save_Known_Destinations();
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//}
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}
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public static void Exit_Handler()
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{
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Persist_Data();
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}
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2023-05-11 21:27:36 +02:00
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}
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}
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