Formalities:
  cover.pdf: Salsa20 cover sheet. (Item A.)
  robustness.pdf: Salsa20 robustness statement. (Item B2.)
  ip.pdf: Salsa20 intellectual-property statement. (Item D.)
  README: this file.

Core documents:
  spec.pdf: Salsa20 specification. (Item B1.)
  security.pdf: Salsa20 security. (Item B3.)
  design.pdf: Salsa20 design. (Items B4 and B5.)
  speed.pdf: Salsa20 speed. (Items B6 and B7.)

Test implementation (items C1, C2):
  ecrypt-config.h: Copied from ECRYPT Stream Cipher project.
  ecrypt-machine.h: Copied from ECRYPT Stream Cipher project.
  ecrypt-portable.h: Copied from ECRYPT Stream Cipher project.
  ecrypt-sync.h: Mostly copied from ECRYPT Stream Cipher project.
  ecrypt.c: Encryption and decryption.
  bigtest.c: Prints a few checksums of many test results, e2d22467 etc.

Attached paper:
  bruteforce-20050425.pdf: Understanding brute force.