Right now we got this message on the tour page:
Cryptography Stack Exchange is a question and answer site for software developers, mathematicians and others interested in cryptography. It's built and run by you as part of the Stack Exchange network of Q&A sites. With your help, we're working together to build a library of detailed answers to every question about cryptography.
I think the term software developers is misleading, because those tend to care more about:
- Libraries and their usage
- Implementation of their own crypto code, possibly their own design
Usually questions in this direction are marked off-topic, e.g. because they are about implementation, programming or usage of cryptographic libraries.
Although cryptographic protocols can be in the purview of software developers, most of our on-topic list in the help center are primarily adressed towards researchers / scientists in the field, who are only noted as "others" in the welcome message.
I would suggest changing the message on the tour page in a manner to reflect the scientific focus of this site