It's rather kind of lame questions, and I can't find good and clear explanation:
- In which step of Rijandel is S-box generated?
- Is the S-box reused in every round of cipher or is generated in every iteration?
- In a course-ware movie where they explained AES (class.coursera.org/crypto-preview/lecture/16) the speaker says that the S-box could be precomputed. Does that mean that the S-box could be constant?