private void Save(FileInfo file)
{
byte[] usernameBytes = Encoding.Unicode.GetBytes(Username);
byte[] passwordBytes = new byte[SecureStringHelper.GetSecureStringByteCount(Password, Encoding.Unicode)];
SecureStringHelper.SecureStringToBytes(Password, passwordBytes, 0, Encoding.Unicode);
try
{
byte[] entropy = GenerateEntropy();
byte[] protectedUsernameBytes = ProtectedData.Protect(usernameBytes, entropy, DataProtectionScope.CurrentUser);
byte[] protectedPasswordBytes = ProtectedData.Protect(passwordBytes, entropy, DataProtectionScope.CurrentUser);
var template = new CredentialsExportTemplate()
{
Entropy = Convert.ToBase64String(entropy),
ProtectedUsername = Convert.ToBase64String(protectedUsernameBytes),
ProtectedPassword = Convert.ToBase64String(protectedPasswordBytes),
};
JsonHelper.Serialize(template, file);
}
finally
{
SecureStringHelper.DestroySecureByteArray(passwordBytes);
}
}
private void Load(FileInfo file)
{
CredentialsExportTemplate template = JsonHelper.Deserialize <CredentialsExportTemplate>(file);
byte[] entropy = Convert.FromBase64String(template.Entropy);
byte[] protectedUsernameBytes = Convert.FromBase64String(template.ProtectedUsername);
byte[] protectedPasswordBytes = Convert.FromBase64String(template.ProtectedPassword);
byte[] usernameBytes = ProtectedData.Unprotect(protectedUsernameBytes, entropy, DataProtectionScope.CurrentUser);
byte[] passwordBytes = ProtectedData.Unprotect(protectedPasswordBytes, entropy, DataProtectionScope.CurrentUser);
try
{
username = Encoding.Unicode.GetString(usernameBytes);
password = SecureStringHelper.SecureStringFromBytes(passwordBytes, Encoding.Unicode);
}
finally
{
SecureStringHelper.DestroySecureByteArray(passwordBytes);
}
}
