Hello Udo and PBKDF2 users, Thanks for the PBKDF2 [1] project; it's been useful in the mongotalk project [2]. Now, I write you with a small change proposal due to some problems I have because of name conflicts with classes at Cryptography package [3] (which ConfigurationOfPBKDF2 declares as a dependency). I analyzed what are the concrete dependencies in PBKDF2 to Cryptography: - Core uses SHA1, which is in Pharo at least since Pharo 4.0 - Tests use the ByteArray>>fromHexString: method extension, which could be copied. (BTW also thanks to Christophe Demarey and collaborators for the Dependencies Analyzer, it's very useful!) Then (unless I'm missing something), PBKDF2 doesn't really need Cryptography as dependency. I can commit the changes if you agree (I see the repository is public). It works locally. Regards, MartÃn [1] http://smalltalkhub.com/#!/~UdoSchneider/PBKDF2 [2] https://github.com/pharo-nosql/mongotalk [3] http://smalltalkhub.com/#!/~Cryptography/Cryptography/