Timeline for An alternative for /dev/urandom
Current License: CC BY-SA 4.0
11 events
| when toggle format | what | by | license | comment | |
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| Sep 26, 2019 at 19:58 | comment | added | user10216038 | @a CVn - That's true, but a good whole disk encryption will do that as part of its initialization anyway. Although I have seen substandard encryptors that fail to do that. In any case, the OP didn't indicate subsequent use beyond wiping. | |
| Sep 23, 2019 at 12:05 | comment | added | user | @user10216038 A legitimate use case for overwriting with random data rather than with zeroes is to pre-fill a disk that will subsequently be used to store encrypted data. As long as TRIM isn't subsequently used, doing so makes it much more difficult to know which parts of the disk holds data of interest to an attacker. | |
| Sep 23, 2019 at 0:45 | comment | added | user10216038 | dev/zero is much faster and your data will be just as wiped. Is there a reason you need random? | |
| Sep 23, 2019 at 0:43 | history | edited | Z.T. | edit tags for relevance | |
| Sep 23, 2019 at 0:00 | history | tweeted | twitter.com/StackSecurity/status/1175922763690893312 | ||
| Sep 22, 2019 at 17:37 | answer | added | Z.T. | timeline score: 4 | |
| Sep 22, 2019 at 17:01 | history | migrated | from crypto.stackexchange.com (revisions) | ||
| Sep 22, 2019 at 17:01 | comment | added | Ella Rose | Welcome to crypto.stackexchange - We have a sister site, namely information security stackexchange. crypto.stackexchange is more or less about how the guts and theorems of the internals of cryptographic algorithms work, and security.stackexchange includes higher-level security concerns. This question appears to be more appropriate for security.stackexchange - Allow me to migrate this there for you. | |
| Sep 22, 2019 at 16:32 | comment | added | kelalaka | If you fear from your data on your harrdisk (not SSD) will be read by forensic the cheapest option is destroying it. If you want to reuse it, overwrite it with any data many times or perform full disk encryption! | |
| Sep 22, 2019 at 13:03 | comment | added | Paul Uszak | I don't think that this can be answered effectively unless you say why you want to "overwrite my harddisk with random data". Forensic data recovery can be defeated by any repeat overwrites. Writing zeros will kill all viruses. So they are both equal and not equal, depending. If you're discarding any type disc, physically destroy it. And of course non of this applies to SSD or hybrid drives anyway. | |
| Sep 22, 2019 at 11:16 | history | asked | dev_new | CC BY-SA 4.0 |