Re: Data integrity check in CIPE - Please explain me the necessityor benefit of a larger checksum.
"Eric M. Hopper" <[email protected]>
| Newsgroups | gmane.comp.encryption.cipe |
|---|---|
| Organization | Omnifarious Software |
| Message-ID | <[email protected]> |
On Mon, 2003-09-29 at 05:34, Hans Steegers wrote: > ** ip-packets contain a CRC-16 over the header only, > ** tcp contains a CRC-16 over header and data + sequence / ack numbers, > ** udp datagrams contain a CRC-16 over data and header. They do not use CRC-16, they use a checksum. This does make the packets harder to modify, but how much harder? Can you give me a specific bound on how hard it would be to modify the packet? Without such a specific bound, I'm forced to conservatively assume that it's no harder than if those checksums aren't there. Have fun (if at all possible), -- There's an excellent C/C++/Python/Unix/Linux programmer with a wide range of other experience and system admin skills who needs work. Namely, me. http://www.omnifarious.org/~hopper/resume.html -- Eric Hopper <[email protected]>
signature.asc
(application/pgp-signature, 185 B)
-----BEGIN PGP MESSAGE----- Version: GnuPG v1.2.1 (GNU/Linux) iD8DBQA/eFzsjtsvlOwvazYRAhQqAKDhnUvWFgLofyzyF/ueleoyQjaHbACeKcv7 msRi+mTPcEt0eHXUbsFUjao= =Mz6c -----END PGP MESSAGE-----