Talk:Cryptographic hash function/to do

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• 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.