Initial phone conversation, then an interview with HR and the CEO, then gave a presentation to 6 current employees on a topic of my choice, finally an informal tech test was done - it was stressed that this wasn't a pass or fail, it was an indication of current skill levels.
Interview questions [1]
Question 1
What is the difference between asymmetrical and symmetrical encryption?
I applied online. The process took 2 weeks. I interviewed at ATSEC Information Security Corp (Austin, TX)
Interview
An online multiple choice assessment covering network protocols and cryptographic concepts. Then an onsite interview with a technical and behavioral portion assessing your knowledge of networking protocols and cryptographic concepts. Finally I had to give a presentation on a topic of my choice, followed by an extensive questioning session on cryptography in general, reviewing cryptographic algorithms in python and C, and various other topics.
Interview questions [1]
Question 1
Given an RSA cryptosystem, what is it called when the owner of a private key calculates m^d mod N