/// <exception cref="CryptographicException">The value of the <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.Mode" /> parameter is not <see cref="F:System.Security.Cryptography.CipherMode.ECB" />, <see cref="F:System.Security.Cryptography.CipherMode.CBC" />, or <see cref="F:System.Security.Cryptography.CipherMode.CFB" />.</exception>
public static string Encrypt(string inputText, ISymCryptKey cryptKey)
{
if (inputText == null)
{
throw new ArgumentNullException("inputText");
}
if (cryptKey == null)
{
throw new ArgumentNullException("cryptKey");
}
using (var rijndaelCipher = new RijndaelManaged())
{
var plainText = Encoding.Unicode.GetBytes(inputText);
using (ICryptoTransform encryptor = rijndaelCipher.CreateEncryptor(cryptKey.Key, cryptKey.Salt))
using (var memoryStream = new MemoryStream())
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainText, 0, plainText.Length);
cryptoStream.FlushFinalBlock();
var cipherBytes = memoryStream.ToArray();
return Convert.ToBase64String(cipherBytes);
}
}
}
/// <exception cref="CryptographicException">The value of the <see cref="P:System.Security.Cryptography.SymmetricAlgorithm.Mode" /> parameter is not <see cref="F:System.Security.Cryptography.CipherMode.ECB" />, <see cref="F:System.Security.Cryptography.CipherMode.CBC" />, or <see cref="F:System.Security.Cryptography.CipherMode.CFB" />.</exception>
/// <exception cref="ArgumentNullException"><paramref name="s" /> is null. </exception>
/// <exception cref="FormatException">The length of <paramref name="s" />, ignoring white-space characters, is not zero or a multiple of 4. -or-The format of <paramref name="s" /> is invalid. <paramref name="s" /> contains a non-base-64 character, more than two padding characters, or a non-white space-character among the padding characters.</exception>
public static string Decrypt(string inputText, ISymCryptKey cryptKey)
{
if (inputText == null)
{
throw new ArgumentNullException("inputText");
}
if (cryptKey == null)
{
throw new ArgumentNullException("cryptKey");
}
using (var rijndaelCipher = new RijndaelManaged())
{
var encryptedData = Convert.FromBase64String(inputText);
using (ICryptoTransform decryptor = rijndaelCipher.CreateDecryptor(cryptKey.Key, cryptKey.Salt))
using (var memoryStream = new MemoryStream(encryptedData))
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
{
var plainText = new byte[encryptedData.Length];
int decryptedCount = cryptoStream.Read(plainText, 0, plainText.Length);
return Encoding.Unicode.GetString(plainText, 0, decryptedCount);
}
}
}
/// <summary>
/// The decrypt.
/// </summary>
/// <param name="InputText">
/// The input text.
/// </param>
/// <param name="cryptKey">
/// The crypt Key.
/// </param>
/// <returns>
/// The decrypt.
/// </returns>
public static string Decrypt(string InputText, ISymCryptKey cryptKey)
{
using (var rijndaelCipher = new RijndaelManaged())
{
byte[] encryptedData = Convert.FromBase64String(InputText);
using (ICryptoTransform decryptor = rijndaelCipher.CreateDecryptor(cryptKey.Key, cryptKey.Salt))
{
using (var memoryStream = new MemoryStream(encryptedData))
{
using (var cryptoStream = new CryptoStream(memoryStream, decryptor, CryptoStreamMode.Read))
{
var plainText = new byte[encryptedData.Length];
int decryptedCount = cryptoStream.Read(plainText, 0, plainText.Length);
return(Encoding.Unicode.GetString(plainText, 0, decryptedCount));
}
}
}
}
}
/// <summary>
/// The encrypt.
/// </summary>
/// <param name="inputText">
/// The input text.
/// </param>
/// <param name="cryptKey">
/// The crypt Key.
/// </param>
/// <returns>
/// The encrypt.
/// </returns>
public static string Encrypt(string inputText, ISymCryptKey cryptKey)
{
using (var rijndaelCipher = new RijndaelManaged())
{
byte[] plainText = Encoding.Unicode.GetBytes(inputText);
using (ICryptoTransform encryptor = rijndaelCipher.CreateEncryptor(cryptKey.Key, cryptKey.Salt))
{
using (var memoryStream = new MemoryStream())
{
using (var cryptoStream = new CryptoStream(memoryStream, encryptor, CryptoStreamMode.Write))
{
cryptoStream.Write(plainText, 0, plainText.Length);
cryptoStream.FlushFinalBlock();
byte[] cipherBytes = memoryStream.ToArray();
return(Convert.ToBase64String(cipherBytes));
}
}
}
}
}
