This example shows how you can use C# to encrypt and decrypt strings using a salt key to protect the data.
This type of encryption is called symmetric-key encryption, which means that the string can only be decrypted if the other party has the correct key.
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using System; using System.Security.Cryptography; using System.Text; public static class Encryption { public static string Encrypt(string input, string key) { byte[] inputArray = UTF8Encoding.UTF8.GetBytes(input); TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider(); tripleDES.Key = UTF8Encoding.UTF8.GetBytes(key); tripleDES.Mode = CipherMode.ECB; tripleDES.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tripleDES.CreateEncryptor(); byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length); tripleDES.Clear(); return Convert.ToBase64String(resultArray, 0, resultArray.Length); } public static string Decrypt(string input, string key) { byte[] inputArray = Convert.FromBase64String(input); TripleDESCryptoServiceProvider tripleDES = new TripleDESCryptoServiceProvider(); tripleDES.Key = UTF8Encoding.UTF8.GetBytes(key); tripleDES.Mode = CipherMode.ECB; tripleDES.Padding = PaddingMode.PKCS7; ICryptoTransform cTransform = tripleDES.CreateDecryptor(); byte[] resultArray = cTransform.TransformFinalBlock(inputArray, 0, inputArray.Length); tripleDES.Clear(); return UTF8Encoding.UTF8.GetString(resultArray); } } |
