public string EncryptWithSessionB64(string text)
{
byte[] IV = m_sessionIV;
byte[] encMessage = SCSC_AES.Encrypt(text, m_sessionPassword, ref IV);
byte[] im = new byte[IV.Length + encMessage.Length];
//Copy from IV to output, IV size bytes (must be 32)
Array.Copy(IV, im, IV.Length);
Array.Copy(encMessage, 0, im, IV.Length, encMessage.Length);
return(Convert.ToBase64String(im));
}
public string DecryptWithSessionB64(string encryptedB64)
{
byte[] encrypted = Convert.FromBase64String(encryptedB64);
byte[] IV = new byte[16];
byte[] encryptedWOIV = new byte[encrypted.Length - 16];
//Copy from encrypted to IV, IV size bytes (must be 32)
Array.Copy(encrypted, IV, 16);
//Copy from encrypted to encryptedWOIV[32], encrypted size bytes - IV size bytes (must be 32)
Array.Copy(encrypted, 16, encryptedWOIV, 0, encrypted.Length - 16);
return(SCSC_AES.Decrypt(encryptedWOIV, m_sessionPassword, IV));
}
public static string GetAESKeyB64(string password = "")
{
if (String.IsNullOrEmpty(password))
{
return(Convert.ToBase64String(SCSC_AES.GetSessionKey()));
}
else
{
return(Convert.ToBase64String(sha256_hash(password)));
}
}
//AES256 with key from SHA256 of user's password used for encrypt/decrypt user data
public string DecryptUserDataB64(string encryptedB64)
{
byte[] encrypted = Convert.FromBase64String(encryptedB64);
return(SCSC_AES.Decrypt(encrypted, m_shaPassword, m_shaUser));
}
//AES256 with key from SHA256 of user's password used for encrypt/decrypt user data
public string EncryptUserDataB64(string text)
{
return(Convert.ToBase64String(SCSC_AES.Encrypt(text, m_shaPassword, ref m_shaUser)));
}