Adam Back personal blog
NSA's Backdoor Key from Lotus Notes (2002)
Before the US crypto export regulations were finally disolved the export version of Lotus Notes used to include a key escrow / backdoor feature called differential cryptography. The idea was that they got permission to export 64 bit crypto if 24 of those bits were encrypted for the NSA's public key. The NSA would then…
- Points
- 564
- HN comments
- 391
- Submissions
- 4
- Cited by
- 9 commenters
Security & PrivacyHistory & Retro Computing2019
On Hacker News
| Submitted | Title on HN | Points | Comments |
|---|---|---|---|
| Dec 22, 2019 | NSA's Backdoor Key from Lotus Notes (2002) by Lammy | 564 | 87 |
| Jun 8, 2013 | NSA's Backdoor Key from Lotus Notes by EthanHeilman | 442 | 85 |
| Sep 18, 2023 | NSA Backdoor Key from Lotus-Notes (1997) by hosteur | 344 | 168 |
| Mar 30, 2015 | NSA's Backdoor Key from Lotus Notes by yuhong | 281 | 51 |
Cited in comments
Linked from 10 Hacker News comments by 9 different people, from Apr 2013 to Sep 2026.
Most recent:
- thataccount · Sep 9, 2026
- selcuka · Jun 17, 2025
- WhereIsTheTruth · Sep 18, 2023
- lsb · Apr 22, 2020
- filleokus · Jan 14, 2020
- finid · Aug 23, 2016
