Eugen Leitl wrote: >Is there any point in compressing the video before running it through a >cryptohash?
No. (assuming you're talking about lossless compression) In general, any invertible transformation neither adds or subtracts entropy, and hence is extremely unlikely to make any difference to the performance of the hash function (assuming SHA-1 is cryptographically secure, which it is currently believed to be). Lossless compression is just one special kind of invertible transformation. --------------------------------------------------------------------- The Cryptography Mailing List Unsubscribe by sending "unsubscribe cryptography" to [EMAIL PROTECTED]
