Terminology; a lot of alternative names for the crypto properties and functions which hold them; distinction between Keyed and unkeyed hash functions (stick to unkeyed here);
Discussion of the "Merkle-Damgård structure" that MD4/5, SHA etc follow; a diagram would be appropriate.
Hash functions constructed from block ciphers - Davies-Meyer etc. (Applied Cryptography goes into detail on these)
Hash functions used to construct other primitives; e.g. block ciphers from hash functions (e.g. SHACAL, BEAR and LION), stream ciphers (SEAL), MACs from hash functions (HMAC) and PRNGs.
Discuss recommended sizes for hash functions; quantify "hard", MD5CRK. Perhaps mention the birthday paradox?
Provide a little detail about specific, popular hash functions
Give an example of Yuval's collision attack on signing hashed messages.
History?
regarding this statement in the article, " Therefore, Alice writes down her solution, appends a random nonce, computes its hash and tells Bob the hash value (whilst keeping the solution secret)." Please clarify if Alice gives Bob the nonce in addition to the hash.
(Non technical) For some reason this article does not seem to print as a pdf from Wikipedia. I have no problem printing a pdf from my pc. Printing was tried on both Firefox and IE.
