public static string Encrypt(string plainText, string pass)
{
string initVector = INIT_VECTOR_ENCRYPT_DECRYPT;
// Before encrypting data, we will append plain text to a random
// salt value, which will be between 4 and 8 bytes long (implicitly
// used defaults).
RijndaelEnhanced rijndaelKey =
new RijndaelEnhanced(pass, initVector);
//Console.WriteLine(String.Format("Plaintext : {0}\n", plainText));
// Encrypt the same plain text data 10 time (using the same key,
// initialization vector, etc) and see the resulting cipher text;
// encrypted values will be different.
return rijndaelKey.Encrypt(plainText);
}
public static bool EncryptFile(string pathFile, string pass)
{
string initVector = INIT_VECTOR_ENCRYPT_DECRYPT; // must be 16 bytes
// Before encrypting data, we will append plain text to a random
// salt value, which will be between 4 and 8 bytes long (implicitly
// used defaults).
RijndaelEnhanced rijndaelKey =
new RijndaelEnhanced(pass, initVector);
//Console.WriteLine(String.Format("Plaintext : {0}\n", plainText));
// Encrypt the same plain text data 10 time (using the same key,
// initialization vector, etc) and see the resulting cipher text;
// encrypted values will be different.
//return
if (!File.Exists(pathFile))
{
return false;
}
try
{
// Reading the content of the file into an array of bytes.
byte[] content = File.ReadAllBytes(pathFile);
byte[] EncryptContent = rijndaelKey.EncryptToBytes(content);
File.WriteAllBytes(pathFile, EncryptContent);
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
return false;
}
return true;
}
public static string Descrypt(string cipherText, string pass)
{
string initVector = INIT_VECTOR_ENCRYPT_DECRYPT;
RijndaelEnhanced re = new RijndaelEnhanced(pass, initVector);
return re.Decrypt(cipherText);
}
public static bool DescryptFile(string pathFile, string pass, out MemoryStream stream)
{
string initVector = INIT_VECTOR_ENCRYPT_DECRYPT;
RijndaelEnhanced re = new RijndaelEnhanced(pass, initVector);
if (!File.Exists(pathFile))
{
stream = null;
return false;
}
try
{
// Reading the content of the file into an array of bytes.
byte[] content = File.ReadAllBytes(pathFile);
byte[] DecryptContent = re.DecryptToBytes(content);
//byte[] buffer = new byte[DecryptContent.Length];
// File.WriteAllBytes("test.xml", EncryptContent);
stream = new MemoryStream(DecryptContent);
// Crazy debug
// StreamReader sr = new StreamReader(stream);
// File.WriteAllText("test1.xml", sr.ReadToEnd());
}
catch (Exception ex)
{
Console.WriteLine(ex.ToString());
stream = null;
return false;
}
return true;
}
