public static void DecryptMode(bool _retry = false)
{
if (_retry)
{
DisplayHeader("Invalid Input! Try again!");
}
else
{
DisplayHeader();
}
try
{
Key cipher = new Key();
Ciphertext ctext = new Ciphertext();
byte[] ciphertext = null;
byte[] key = null;
byte[] iv = null;
string input;
Console.Write("How would you like to input ciphertext? (FILE / TEXT): ");
input = Console.ReadLine().ToUpper();
if (input == "TEXT")
{
Console.Write("Ciphertext: ");
ciphertext = Convert.FromBase64String(Console.ReadLine());
}
else if (input == "FILE")
{
Console.WriteLine(@"Please enter the path to your ciphertext. (Ex. C:\EncrpytedText.AESTXT):");
string path = Console.ReadLine();
System.Xml.Serialization.XmlSerializer reader = new System.Xml.Serialization.XmlSerializer(typeof(Ciphertext));
System.IO.StreamReader file = new System.IO.StreamReader(path);
ctext = (Ciphertext)reader.Deserialize(file);
ciphertext = Convert.FromBase64String(ctext.CIPHERTEXTSTRING);
}
else
{
DecryptMode(true);
}
Console.Write("How would you like to input a key? (FILE / TEXT): ");
input = Console.ReadLine().ToUpper();
if (input == "TEXT")
{
Console.Write("Key: ");
key = Convert.FromBase64String(Console.ReadLine());
Console.Write("IV: ");
iv = Convert.FromBase64String(Console.ReadLine());
}
else if (input == "FILE")
{
Console.Write(@"Please enter the path to your key. (Ex. C:\MainKey.AES): ");
string path = Console.ReadLine();
System.Xml.Serialization.XmlSerializer reader = new System.Xml.Serialization.XmlSerializer(typeof(Key));
System.IO.StreamReader file = new System.IO.StreamReader(path);
cipher = (Key)reader.Deserialize(file);
key = Convert.FromBase64String(cipher.KEY);
iv = Convert.FromBase64String(cipher.IV);
}
else
{
DecryptMode(true);
}
using (AesManaged myAes = new AesManaged())
{
// TODO: Allow the text to be exported to a file.
// Decrypt the bytes to a string.
string roundtrip = DecryptStringFromBytes_Aes(ciphertext, key, iv);
DisplayHeader();
Console.Write("How would you like to output your text? (FILE / TEXT): ");
input = Console.ReadLine().ToUpper();
if (input == "TEXT")
{
Console.WriteLine("{0}", roundtrip);
}
else if (input == "FILE")
{
Console.WriteLine(@"Please enter the path to save your text. (Ex. C:\Document.txt):");
string path = Console.ReadLine();
System.IO.File.WriteAllText(path, roundtrip);
}
else
{
DecryptMode(true);
}
}
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e.Message);
}
Console.Write("Press any key to continue...");
Console.ReadKey();
OperationMode();
}
public static void EncryptMode(bool _retry = false)
{
if (_retry)
{
DisplayHeader("Invalid Input!");
}
else
{
DisplayHeader();
}
try
{
string input;
string original = null;
// TODO: Allow text to be inputed from a file
Key cipher = new Key();
Console.Write("How would you like to input the text to Encrypt? (FILE / CONSOLE): ");
input = Console.ReadLine().ToUpper();
if (input == "FILE")
{
Console.Write(@"Please enter the path to your text. (Ex. C:\TextDocument.txt): ");
original = System.IO.File.ReadAllText(Console.ReadLine());
}
else if (input == "CONSOLE")
{
Console.Write("Text to Encrypt: ");
original = Console.ReadLine();
}
else
{
EncryptMode(true);
}
byte[] key = null;
byte[] iv = null;
Console.Write("How would you like to input a key? (FILE / TEXT): ");
input = Console.ReadLine().ToUpper();
if (input == "TEXT")
{
Console.Write("Key: ");
key = Convert.FromBase64String(Console.ReadLine());
Console.Write("IV: ");
iv = Convert.FromBase64String(Console.ReadLine());
}
else if (input == "FILE")
{
Console.Write(@"Please enter the path to your key. (Ex. C:\MainKey.AES): ");
string path = Console.ReadLine();
System.Xml.Serialization.XmlSerializer reader = new System.Xml.Serialization.XmlSerializer(typeof(Key));
System.IO.StreamReader file = new System.IO.StreamReader(path);
cipher = (Key)reader.Deserialize(file);
key = Convert.FromBase64String(cipher.KEY);
iv = Convert.FromBase64String(cipher.IV);
}
else
{
EncryptMode(true);
}
// Create a new instance of the AesManaged
// class. This can generate a new key and
// initialization vector (IV).
using (AesManaged myAes = new AesManaged())
{
byte[] encrypted;
string example;
// Encrypt the string to an array of bytes.
encrypted = EncryptStringToBytes_Aes(original, key, iv);
example = Convert.ToBase64String(encrypted);
//Display the original data and the decrypted data.
DisplayHeader();
Console.Write("Where would you like to output to? (CONSOLE/FILE): ");
string line = Console.ReadLine().ToUpper();
if (line == "CONSOLE")
{
DisplayHeader();
Console.WriteLine("Cyphertext: {0}", example);
}
else if (line == "FILE")
{
DisplayHeader();
Ciphertext cyphertext = new Ciphertext();
cyphertext.CIPHERTEXTSTRING = example;
Console.Write(@"Please enter a path (Ex. C:\EncrpytedText.AESTXT): ");
string path = Console.ReadLine();
System.Xml.Serialization.XmlSerializer writer = new System.Xml.Serialization.XmlSerializer(typeof(Ciphertext));
System.IO.StreamWriter file = new System.IO.StreamWriter(path);
writer.Serialize(file, cyphertext);
file.Close();
Console.WriteLine("File successfully written to file at (" + path + ")");
}
}
}
catch (Exception e)
{
Console.WriteLine("Error: {0}", e.Message);
}
Console.Write("Press any key to continue...");
Console.ReadKey();
OperationMode();
}
