4 ms·
These algorithms are pretty weak but can still be used for securing the communications with current phones.
by aliasEli 5y ago
These algorithms are pretty weak but can still be used for securing the communications with current phones.
- daveguy 5y agoIf the security level is artificially limited to 40 bits as the article suggests, then it is not good for securing any communications. It was relatively easy to crack DES-56 at rest before the turn of the century. A teraflop machine can defeat 40 bit encryption on the order of seconds. Edit: fixed the incorrect "RSA-56" encryption. Thanks graderjs.
- graderjs 5y agoI think you might mean DES-56, or RC5, but not RSA.
- jhgb 5y agoI imagine that technically RSA-56 would be easy to crack as well.
- axoltl 5y agoTo be fair you could probably break 56 bit RSA with a pen and paper.
- graderjs 5y agoPen and paper? I doubt it. You're welcome to try (show working ;p ;) xx) here's a sample RSA-56 problem I created for you: 39551945224675453 (56-bit semiprime)
- daveguy 5y agoYes, good catch. I did mean DES-56. I got the encryption name confused with the company that issued the challenge. The RSA algorithm is completely different.
- meepmorp 5y agoAlso, note, GEA-2 doesn't seem to have the same kind of key weakening. I have no idea about the relative prevalence and configurability of those algorithms in the wild, though.