RJCrypt rj = new RJCrypt();

string password = "eUCX6V54eTr?C8M";  // The password to encrypt the data with
string plaintext = "Text"; // The string to encrypt

// Encrypt the string
string ciphertext = rj.Encrypt(plaintext, password, RJCrypt.Common.KeySize.Aes256);

// Decrypt the string
plaintext = rj.Decrypt(ciphertext, password, RJCrypt.Common.KeySize.Aes256);

string password = "eUCX6V54eTr?C8M";  // The password to encrypt the data with
string plaintext = "Text"; // The string to encrypt

// Encrypt the string
string aeCiphertext = rj.Encrypt(plaintext, password, RJCrypt.Common.KeySize.Aes256);

// Decrypt the string
plaintext = rj.Decrypt(aeCiphertext, password, RJCrypt.Common.KeySize.Aes256);

string password = "eUCX6V54eTr?C8M";            // The password to encrypt the file with
string plaintextFile = @"D:\Photo.png";         // The file to encrypt
string ciphertextFile = @"D:\ProtectedFiles";   // The encrypted file (extension unnecessary)

// Encrypt the file
rj.Encrypt(plaintextFile, ciphertextFile, password, RJCrypt.Common.KeySize.Aes256);

// Decrypt the file
rj.Decrypt(ciphertextFile, plaintextFile, password, RJCrypt.Common.KeySize.Aes256);

// The HashIterations setting is used in several places throughout the lib,
// with Rijndael.Encrypt being just one of them. After making this change,
// any future calls to Rijndael.Encrypt will make use of this new value
Settings.HashIterations = 25000;

// To reset all the settings to their default values
Settings.Reset();