static void Demo2()
{
// SUMMARY: encrypt and decrypt string with a static parameters
// create the plain text to be encrypted
string PlainText = "The quick brown fox jumped over the lazy dog.";
// empty salt to hold the value generated by encryption
string SaltText;
// need to assign a static password provider implemntation
Aes256EncryptionProvider.PasswordProvider = new AppSettingPasswordProvider();
// encrypt the plain texd to cipher text, returning the generated salt
string CipherText = Aes256EncryptionProvider.Encrypt(PlainText, out SaltText);
// decrypt the cipher texdt back into plain text
string PlainText2 = Aes256EncryptionProvider.Decrypt(CipherText, SaltText);
Console.WriteLine("DEMO #2");
Console.WriteLine("=======================");
Console.WriteLine("\nPlainText: {0}", PlainText);
Console.WriteLine("\nSalt: {0}", SaltText);
Console.WriteLine("\nCipherText: {0}", CipherText);
Console.WriteLine("\nPlainText2: {0}", PlainText2);
Console.WriteLine();
}
static void Demo1()
{
// SUMMARY: encrypt and decrypt string with explicit settings
// create the plain text to be encrypted
string PlainText = "The quick brown fox jumped over the lazy dog.";
// create a password, iterations and salt size
string Password = "******";
int Iterations = 11202;
int SaltSize = 128;
// empty salt to hold the value generated by encryption
string SaltText;
// encrypt the plain texd to cipher text, returning the generated salt
string CipherText = Aes256EncryptionProvider.Encrypt(PlainText, out SaltText, Password, Iterations, SaltSize);
// decrypt the cipher texdt back into plain text
string PlainText2 = Aes256EncryptionProvider.Decrypt(CipherText, SaltText, Password, Iterations, SaltSize);
Console.WriteLine("DEMO #1");
Console.WriteLine("=======================");
Console.WriteLine("\nPlainText: {0}", PlainText);
Console.WriteLine("\nIterations: {0}", Iterations.ToString("G"));
Console.WriteLine("\nSaltSize: {0}", SaltSize.ToString("G"));
Console.WriteLine("\nSalt: {0}", SaltText);
Console.WriteLine("\nCipherText: {0}", CipherText);
Console.WriteLine("\nPlainText2: {0}", PlainText2);
Console.WriteLine();
}
/// <summary>
/// Encrypts a secret string, returning an auto-generated salt.
/// Static PasswordProvider, Iterations and SaltSize are internally applied.
/// </summary>
/// <param name="PlainText">String containing the text to be encrypted.</param>
/// <param name="SaltText">SaltText converted to a string. This value is generated in the function and passed out.</param>
/// <returns>Encrypted cipher converted to a string.</returns>
public static string Encrypt(string PlainText, out string SaltText)
{
// ValidateStaticInitialization();
return(Aes256EncryptionProvider.Encrypt(PlainText, out SaltText,
Aes256EncryptionProvider.PasswordProvider.GetPassword(),
Aes256EncryptionProvider.Iterations,
Aes256EncryptionProvider.SaltSize));
}
public static string Decrypt(string CipherText, string SaltText)
{
// ValidateStaticInitialization();();
return(Aes256EncryptionProvider.Decrypt(CipherText, SaltText,
Aes256EncryptionProvider.PasswordProvider.GetPassword(),
Aes256EncryptionProvider.Iterations,
Aes256EncryptionProvider.SaltSize));
}
static void Demo3()
{
// SUMMARY: encrypt and decrypt object using a memory stream
// create and populate a serializable demo object
DemoObject DemoObject = new DemoObject()
{
SomeName = "Test Name",
SomeInteger = 99999
};
DemoObject.SomeDictionary.Add("Test1", 1);
DemoObject.SomeDictionary.Add("Test2", 2);
DemoObject.SomeDictionary.Add("Test3", 3);
// empty salt will be generated by encryption
string SaltText;
// need to assign a static password provider implemntation
Aes256EncryptionProvider.PasswordProvider = new AppSettingPasswordProvider();
// create a stream to hold the cipher generated by encryption
MemoryStream TargetCipherStream = new MemoryStream();
// encrypt the demo object into the stream. return the generated salt.
Aes256EncryptionProvider.EncryptObject(TargetCipherStream, DemoObject, out SaltText);
// convert the cipher to a string (not really needed, but good for visuaization
string CipherText = Convert.ToBase64String(TargetCipherStream.ToArray());
// create a new stream and load the cipher
MemoryStream SourceCipherStream = new MemoryStream(Convert.FromBase64String(CipherText));
// decrypt the stream to an object and cast as a demo object
// we'll compare the serializations of original and decrypted demo objects, below
DemoObject DecryptedDemoObject = (DemoObject)Aes256EncryptionProvider.DecryptObject(SourceCipherStream, SaltText);
Console.WriteLine("DEMO #3");
Console.WriteLine("=======================");
Console.WriteLine("\nDemoObject: {0}", new JavaScriptSerializer().Serialize(DemoObject));
Console.WriteLine("\nSalt: {0}", SaltText);
Console.WriteLine("\nCipherText: {0}", CipherText);
Console.WriteLine("\nDemoObject2: {0}", new JavaScriptSerializer().Serialize(DecryptedDemoObject));
Console.WriteLine();
}
static void Demo4()
{
// SUMMARY: encrypt and decrypt object to file
// create and populate a serializable demo object
DemoObject DemoObject = new DemoObject()
{
SomeName = "Test Name",
SomeInteger = 99999
};
DemoObject.SomeDictionary.Add("Test1", 1);
DemoObject.SomeDictionary.Add("Test2", 2);
DemoObject.SomeDictionary.Add("Test3", 3);
// set the file path where the encrypted binary data will be stored
string FilePath = @"C:\Temporary\cipher.bin";
// empty salt will be generated by encryption
string SaltText;
// need to assign a static password provider implemntation
Aes256EncryptionProvider.PasswordProvider = new AppSettingPasswordProvider();
// create the file stream
FileStream TargetCipherStream = new FileStream(FilePath, FileMode.Create);
// encrypt the demo object into the file stream. return the generated salt.
Aes256EncryptionProvider.EncryptObject(TargetCipherStream, DemoObject, out SaltText);
// create another file stream (same path) as the source of the cipher
FileStream SourceCipherStream = new FileStream(FilePath, FileMode.Open);
// decrypt the stream to an object and cast as a demo object
// we'll compare the serializations of the original and decrypted demo objects, below
DemoObject DecryptedDemoObject = (DemoObject)Aes256EncryptionProvider.DecryptObject(SourceCipherStream, SaltText);
Console.WriteLine("DEMO #4");
Console.WriteLine("=======================");
Console.WriteLine("\nDemoObject: {0}", new JavaScriptSerializer().Serialize(DemoObject));
Console.WriteLine("\nSalt: {0}", SaltText);
Console.WriteLine("\nCipherText: Look in the file \"{0}\"", FilePath);
Console.WriteLine("\nDemoObject2: {0}", new JavaScriptSerializer().Serialize(DecryptedDemoObject));
Console.WriteLine();
}
