public static (string encryptedValue, Key publicKey, Key secretKey) EncryptString(string firstPrime, string secondPrime, string str)
{
var(publicKey, secretKey) = RSAKeysGenerator.GetKeys(firstPrime, secondPrime);
var data = Encoding.ASCII.GetBytes(str ?? string.Empty).Select(x => (int)x).ToArray();
var encrypted = Encrypt(data, publicKey.Exponent, publicKey.Module);
return(string.Join(":", encrypted), publicKey, secretKey);
}
public static (string newPath, Key publicKey, Key secretKey) EncryptFile(string path, string firstPrime, string secondPrime)
{
if (!File.Exists(path))
{
throw new FileNotFoundException("File does not exist.");
}
var file = File.ReadLines(path);
var(publicKey, secretKey) = RSAKeysGenerator.GetKeys(firstPrime, secondPrime);
var encrypted =
file.Select(x => Encoding.ASCII.GetBytes(x).Select(b => (int)b))
.Select(x => string.Join(":", Encrypt(x, publicKey.Exponent, publicKey.Module)));
File.WriteAllLines(path + ".enc", encrypted);
return(path + ".enc", publicKey, secretKey);
}