Hi, I need to encrypt/decrypt a string using RDL encryption.

In Delphi I use TPLockBox, but I can't compile it using FPC.

Does anyone knows a replacement for it?.

Thanks in advance,

I don't know RDL encryption, but if you can use other encryption schemes, the tiOPF2 has an encryption factory method and encryption interface which you can use. This allows you to switching the actual encryption scheme or implement others without change your code that uses encryption. tiOPF2 includes DES, Blowfish, Simple and None (handy for debugging) out of the box. The encryption code in tiOPF does not depend on any of the other tiOPF units - so is very easy to use as a stand-alone feature. Of course the code is well unit tested too.

If you are interested, see the tiEncrypt unit in the Core directory, and the tiEncryptXXX units in the Options directory. tiOPF is hosted on SourceForge.