3 ms·
A signed and encrypted msg shows both author and that the content was not altered - How exactly is that not applicable?
by mistrial9 5y ago
A signed and encrypted msg shows both author and that the content was not altered - How exactly is that not applicable?
- yardstick 5y agoThe op only mentioned cryptographic checks, not signed and encrypted. Even then, the signature and encryption algorithms used are important and you should still have a MAC to detect alteration of the cipher text. Hence my AEAD suggestion. Given the nature of the comms- to a device in the expanse of space- securing the transmission from malicious users seems like the last thing they should worry about. It’s more the accidental corruption of data, hence something like a CRC or simple MAC are sufficient for the circumstances. Why waste energy and CPU cycles on something you don’t actually need?