The move!

src/Ombi.Helpers/StringCipher.cs

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+using EasyCrypto;
+using System;
+using System.IO;
+using System.Security.Cryptography;
+using System.Text;
+
+namespace Ombi.Helpers
+{
+    public static class StringCipher
+    {
+        /// <summary>
+        /// Decrypts the specified cipher text.
+        /// </summary>
+        /// <param name="cipherText">The cipher text.</param>
+        /// <param name="passPhrase">The pass phrase.</param>
+        /// <returns></returns>
+        public static string Decrypt(string cipherText, string passPhrase)
+        {
+            var fullCipher = Convert.FromBase64String(cipherText);
+
+            var iv = new byte[16];
+            var cipher = new byte[16];
+
+            Buffer.BlockCopy(fullCipher, 0, iv, 0, iv.Length);
+            Buffer.BlockCopy(fullCipher, iv.Length, cipher, 0, iv.Length);
+            var key = Encoding.UTF8.GetBytes(passPhrase);
+
+            using (var aesAlg = Aes.Create())
+            {
+                using (var decryptor = aesAlg.CreateDecryptor(key, iv))
+                {
+                    string result;
+                    using (var msDecrypt = new MemoryStream(cipher))
+                    {
+                        using (var csDecrypt = new CryptoStream(msDecrypt, decryptor, CryptoStreamMode.Read))
+                        {
+                            using (var srDecrypt = new StreamReader(csDecrypt))
+                            {
+                                result = srDecrypt.ReadToEnd();
+                            }
+                        }
+                    }
+
+                    return result;
+                }
+            }
+        }
+
+        /// <summary>
+        /// Encrypts the specified plain text.
+        /// </summary>
+        /// <param name="plainText">The plain text.</param>
+        /// <param name="passPhrase">The pass phrase.</param>
+        /// <returns></returns>
+        public static string Encrypt(string plainText, string passPhrase)
+        {
+            var key = Encoding.UTF8.GetBytes(passPhrase);
+
+            using (var aesAlg = Aes.Create())
+            {
+                using (var encryptor = aesAlg.CreateEncryptor(key, aesAlg.IV))
+                {
+                    using (var msEncrypt = new MemoryStream())
+                    {
+                        using (var csEncrypt = new CryptoStream(msEncrypt, encryptor, CryptoStreamMode.Write))
+                        using (var swEncrypt = new StreamWriter(csEncrypt))
+                        {
+                            swEncrypt.Write(plainText);
+                        }
+
+                        var iv = aesAlg.IV;
+
+                        var decryptedContent = msEncrypt.ToArray();
+
+                        var result = new byte[iv.Length + decryptedContent.Length];
+
+                        Buffer.BlockCopy(iv, 0, result, 0, iv.Length);
+                        Buffer.BlockCopy(decryptedContent, 0, result, iv.Length, decryptedContent.Length);
+
+                        return Convert.ToBase64String(result);
+                    }
+                }
+            }
+        }
+
+
+        public static string EncryptString(string text, string keyString)
+        {
+            var t = Encoding.UTF8.GetBytes(text);
+            var result = Convert.ToBase64String(t);
+            return result;
+        }
+
+        public static string DecryptString(string cipherText, string keyString)
+        {
+            var textAsBytes = Convert.FromBase64String(cipherText);
+            var result = Encoding.UTF8.GetString(textAsBytes);
+            return result;
+        }
+    }
+}