Prob a poor choice of words on my part. Verified as in "is this file completely transferred or not?" non-security critical data, I just want a general idea if

Prob a poor choice of words on my part. Verified as in "is this file completely transferred or not?" non-security critical data, I just want a general idea if its valid or the file transfer failed half way thru or the thing sending it went bonkers and just sent trash to us. Another funny file transfer use: Send me a file of data every hour. Is the non-crypto-hash new or the same old hash? If its the same old hash, those clowns sent me the same file twice, I'm supposed to get a new one. Yes I know I can dedupe "easily" but not as "easily" as sha-1. And some application layer software like MySQL can directly generate SHA1 as a function in the query. Its really quite handy sometimes!