2022-02-03 15:26:44 +00:00
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namespace ASC.Security.Cryptography;
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[Singletone]
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public class InstanceCrypto
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2019-05-17 11:58:09 +00:00
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{
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2022-02-03 15:26:44 +00:00
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private readonly byte[] _eKey;
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2019-10-09 15:04:46 +00:00
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2022-02-08 11:07:28 +00:00
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public InstanceCrypto(MachinePseudoKeys machinePseudoKeys)
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{
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_eKey = machinePseudoKeys.GetMachineConstant(32);
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}
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2019-10-09 15:04:46 +00:00
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2022-02-08 11:07:28 +00:00
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public string Encrypt(string data)
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{
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return Convert.ToBase64String(Encrypt(Encoding.UTF8.GetBytes(data)));
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}
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2019-05-17 11:58:09 +00:00
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2022-02-03 15:26:44 +00:00
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public byte[] Encrypt(byte[] data)
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{
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using var hasher = Aes.Create();
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hasher.Key = _eKey;
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hasher.IV = new byte[hasher.BlockSize >> 3];
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2021-11-24 19:34:39 +00:00
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2022-02-03 15:26:44 +00:00
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using var ms = new MemoryStream();
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using var ss = new CryptoStream(ms, hasher.CreateEncryptor(), CryptoStreamMode.Write);
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using var plainTextStream = new MemoryStream(data);
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2022-02-03 15:26:44 +00:00
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plainTextStream.CopyTo(ss);
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ss.FlushFinalBlock();
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hasher.Clear();
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return ms.ToArray();
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}
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2022-02-03 15:26:44 +00:00
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public string Decrypt(string data) => Decrypt(Convert.FromBase64String(data));
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2019-05-17 11:58:09 +00:00
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2022-02-03 15:26:44 +00:00
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public string Decrypt(byte[] data)
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{
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using var hasher = Aes.Create();
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hasher.Key = _eKey;
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hasher.IV = new byte[hasher.BlockSize >> 3];
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2019-05-17 11:58:09 +00:00
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2022-02-03 15:26:44 +00:00
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using var msDecrypt = new MemoryStream(data);
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using var csDecrypt = new CryptoStream(msDecrypt, hasher.CreateDecryptor(), CryptoStreamMode.Read);
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using var srDecrypt = new StreamReader(csDecrypt);
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2021-08-25 15:26:13 +00:00
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2022-02-03 15:26:44 +00:00
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// Read the decrypted bytes from the decrypting stream
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// and place them in a string.
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return srDecrypt.ReadToEnd();
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2019-05-17 11:58:09 +00:00
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}
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2022-02-03 15:26:44 +00:00
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}
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