public static byte[] EncryptText(string inputText, string password)
{
ReaderWriterLockSlim locker = new ReaderWriterLockSlim();
try
{
locker.EnterReadLock();
byte[] encryptedBytes = System.Text.Encoding.UTF8.GetBytes(inputText);
byte[] passwordToByteArray = System.Text.Encoding.UTF8.GetBytes(password);
passwordToByteArray = SHA256.Create().ComputeHash(passwordToByteArray);
byte[] encryptedByteArray = AES.GetEncryptedByteArray(encryptedBytes, passwordToByteArray);
return(encryptedByteArray);
}
catch (Exception)
{
return(null);
}
finally
{
locker.ExitReadLock();
}
}
public static string EncryptFile(string inputFile, string outputFile, string password, bool base64Encoding = false, bool localOutput = false)
{
ReaderWriterLockSlim locker = new ReaderWriterLockSlim();
try
{
locker.EnterReadLock();
byte[] encryptedBytes = File.ReadAllBytes(inputFile);
byte[] passwordToByteArray = System.Text.Encoding.ASCII.GetBytes(password);
//hash the password with sha256
passwordToByteArray = SHA256.Create().ComputeHash(passwordToByteArray);
byte[] encryptedByteArray = AES.GetEncryptedByteArray(encryptedBytes, passwordToByteArray);
string writeAt = !string.IsNullOrEmpty(outputFile) ? outputFile : inputFile;
if (base64Encoding)
{
string base64 = System.Convert.ToBase64String(encryptedByteArray, Base64FormattingOptions.None);
File.WriteAllText(writeAt, base64, Encoding.UTF8);
string encryptoSettingsFileName = "encrypto.settings";
if (RuntimeInformation.IsOSPlatform(OSPlatform.Windows))
{
string encryptoSettingsPath = string.Empty;
if (localOutput)
{
encryptoSettingsPath = Path.Combine(Path.GetDirectoryName(inputFile), encryptoSettingsFileName);
}
else
{
var encryptoPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.ApplicationData), "encrypto");
if (!Directory.Exists(encryptoPath))
{
Directory.CreateDirectory(encryptoPath);
}
encryptoSettingsPath = Path.Combine(encryptoPath, encryptoSettingsFileName);
}
MappingModel mapping = new MappingModel();
mapping.original = inputFile;
mapping.encrypted = outputFile;
string content = JsonConvert.SerializeObject(mapping);
File.WriteAllText(encryptoSettingsPath, content); // %AppData%/encrypto/encrypto.settings
}
if (RuntimeInformation.IsOSPlatform(OSPlatform.Linux) || RuntimeInformation.IsOSPlatform(OSPlatform.OSX))
{
string encryptoSettingsPath = string.Empty;
if (localOutput)
{
encryptoSettingsPath = Path.Combine(Path.GetDirectoryName(inputFile), encryptoSettingsFileName);
}
else
{
var encryptoPath = Path.Combine(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile), ".encrypto");
if (!Directory.Exists(encryptoPath))
{
Directory.CreateDirectory(encryptoPath);
}
encryptoSettingsPath = Path.Combine(encryptoPath, encryptoSettingsFileName);
}
MappingModel mapping = new MappingModel();
mapping.original = inputFile;
mapping.encrypted = outputFile;
string content = JsonConvert.SerializeObject(mapping);
File.WriteAllText(encryptoSettingsPath, content); // ~/.encrypto/encrypto.settings
}
}
else
{
File.WriteAllBytes(writeAt, encryptedByteArray);
}
return("encryption succeeded");
}
catch (Exception)
{
return("encryption failed");
}
finally
{
locker.ExitReadLock();
}
}
