public string encrypt(string text, string password)
{
core c = new core();
random r = new random();
byte[] baPwd = Encoding.UTF8.GetBytes(password);
// Hash the password with SHA256
byte[] baPwdHash = SHA256Managed.Create().ComputeHash(baPwd);
byte[] baText = Encoding.UTF8.GetBytes(text);
byte[] baSalt = r.GetRandomBytes();
byte[] baEncrypted = new byte[baSalt.Length + baText.Length];
// Combine Salt + Text
for (int i = 0; i < baSalt.Length; i++)
{
baEncrypted[i] = baSalt[i];
}
for (int i = 0; i < baText.Length; i++)
{
baEncrypted[i + baSalt.Length] = baText[i];
}
baEncrypted = c.encrypt(baEncrypted, baPwdHash);
string result = Convert.ToBase64String(baEncrypted);
return(result);
}
public string decrypt(string text, string password)
{
core c = new core();
random r = new random();
byte[] baPwd = Encoding.UTF8.GetBytes(password);
// Hash the password with SHA256
byte[] baPwdHash = SHA256Managed.Create().ComputeHash(baPwd);
byte[] baText = Convert.FromBase64String(text);
byte[] baDecrypted = c.decrypt(baText, baPwdHash);
// Remove salt
int saltLength = r.GetSaltLength();
byte[] baResult = new byte[baDecrypted.Length - saltLength];
for (int i = 0; i < baResult.Length; i++)
{
baResult[i] = baDecrypted[i + saltLength];
}
string result = Encoding.UTF8.GetString(baResult);
return(result);
}
public void EncryptFile(string inputFile, string encryptedOutputFile, string password)
{
core c = new core();
byte[] bytesToBeEncrypted = File.ReadAllBytes(inputFile);
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
// Hash the password with SHA256
passwordBytes = SHA256.Create().ComputeHash(passwordBytes);
byte[] bytesEncrypted = c.encrypt(bytesToBeEncrypted, passwordBytes);
File.WriteAllBytes(encryptedOutputFile, bytesEncrypted);
}
public string decrypt(string input, string password)
{
core c = new core();
// Get the bytes of the string
byte[] bytesToBeDecrypted = Convert.FromBase64String(input);
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
passwordBytes = SHA256.Create().ComputeHash(passwordBytes);
byte[] bytesDecrypted = c.decrypt(bytesToBeDecrypted, passwordBytes);
string result = Encoding.UTF8.GetString(bytesDecrypted);
return(result);
}
public string encrypt(string input, string password)
{
core c = new core();
// Get the bytes of the string
byte[] bytesToBeEncrypted = Encoding.UTF8.GetBytes(input);
byte[] passwordBytes = Encoding.UTF8.GetBytes(password);
// Hash the password with SHA256
passwordBytes = SHA256.Create().ComputeHash(passwordBytes);
byte[] bytesEncrypted = c.encrypt(bytesToBeEncrypted, passwordBytes);
string result = Convert.ToBase64String(bytesEncrypted);
return(result);
}