public CryptionService( Microsoft.Extensions.Configuration.IConfiguration config, ILogger <CryptionService> logger) { Logger = logger; symmetric = Aes.Create(); symmetric.Mode = CipherMode.CBC; symmetric.Padding = PaddingMode.ISO10126; symmetric.KeySize = 256; symmetric.Key = config.CryptionKey(); symmetric.IV = config.CryptionIV(); hashKey = config.CryptionHash(); createHash = () => { if (hash == null) { hash = new HMACSHA512(Convert.FromBase64String(hashKey)); } return(hash); }; symmetric2 = Aes.Create(); symmetric2.Mode = CipherMode.CBC; symmetric2.Padding = PaddingMode.ISO10126; symmetric2.KeySize = 256; symmetric2.Key = config.CryptionKey2(); symmetric2.IV = config.CryptionIV2(); }