Cost of brute force decryption

Perry E. Metzger perry at piermont.com
Wed Jun 5 19:55:13 PDT 1996



Everyone seems to be arguing about whether brute force decryption of
RC-40 costs "tens of thousands" or not.

The answer is it costs pennies. Literally.

See the "Big Seven" paper on why key lengths of over 80 bits are
required to read the details.

ftp://ftp.research.att.com/dist/mab/keylength.txt

Perry






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