4 ms·
"can you (easily) recover the data" This rules out encryption+key-deletion as erasure because while you may not be able to (easily) recover the data, someone w
by Oomroo 9y ago
"can you (easily) recover the data"
This rules out encryption+key-deletion as erasure because while you may not be able to (easily) recover the data, someone with more computing power could (now or in the future)
What about old magnetic disks and tape backups ? Even if you erase them they could possibly be recovered by someone else with the right resources
- Thiez 9y agoThere literally isn't enough energy in the solar system to run a counter from 0 to 2^256. Computers may still get faster for some time, but in the absence of new cryptographic weaknesses, 256 bit symmetric encryption can be considered to be safe from brute-force attacks forever. There is some trick using quantum computers that could help, but doubling the key size counters that, putting your encryption beyond the reach of brute-force once again.