Diffie-Hellman exchange for the layman
Privacy tool by Boris Reitman, a privacy activist.
Diffie-Hellman exchange for the layman launched on April 22, 2021 with 75 votes, #655 of 3,754 launches that month and more than 90% of that year's launches. The site was still online in September 2026, 5 years on.
In plain words
Diffie-Hellman exchange for the layman is an educational resource that explains the Diffie-Hellman key exchange protocol in accessible language. Designed for people without cryptography expertise, it breaks down how two parties can establish a secure shared secret over an insecure channel. The resource makes this complex mathematical concept understandable to general audiences interested in learning how modern encryption foundations work.
written from the facts on this page · September 2026
From the sources
I am an advocate of private communication and I have made this tool to encourage it. Use it to establish a 44-character password that you can use to encrypt further communication. For an introduction, read my article Diffie-Hellman for the Layman . By exchanging special non-confidential codes you can agree with another person on a confidential password. This form allows you to do it. The page resets on every refresh and nothing is saved. Keep it open until you are finished. For example, if your goal is to establish a new password with another person, then do not close this page until you get it. Use the "Save Backup" feature to store page's state in a file. If you have saved a backup file…from borisreitman.com
Does a similar job
all alternatives →
filippo.io/mlkem768 – Post-Quantum Cryptography for the Go Ecosystem2024 · words.filippo.io · ▲315filippo.io/mlkem768 is a pure-Go implementation of the post-quantum key exchange mechanism ML-KEM-768 optimized for correctness and readability.
A password manager using Keybase for encryption and storage2017 · github.com · ▲172A secret manager backed by Keybase and KBFS. Contribute to kbsecret/kbsecret development by creating an account on GitHub.
FractalCrypt 2.0 – free deniable encryption cryptoarchiver2021 · github.com · ▲128Free cross-platform deniable encryption cryptoarchiver - GitHub - zorggomat/FractalCryptGUI: Free cross-platform deniable encryption cryptoarchiver
1Password Developer Tools2022 · 1password.com · ▲105Develop faster, eliminate complexity, protect your secrets
Cryptic – A sensible secret management toolkit and Go library2016 · github.com · ▲93A sensible secret management toolkit (and Go library) for admins and programmers - domodwyer/cryptic
GDH – Generalized Diffie-Hellman key exchange Java implementation2017 · github.com · ▲8Generalized Diffie-Hellman key exchange Java library built on top of the Vert.x framework - maxamel/GDH
More life & fun this month
the category →
A free city-building game in your browser. You are the mayor. You know what the city needs. Now get it past the zoning board, the neighbors, the appeals court and the next election.
Life & fun · 2d ago · permit.petercai.com
- IV
Life & fun · 14d ago · tanzaniaeducationproject.org
Turn a phone, tablet or TV into a sign. Type a message and it fills the screen: welcome signs, timers, Wi-Fi passwords and more. No app, no account, free.
Life & fun · 15d ago · bigwords.page
Play a free virtual guitar online with your keyboard or by touch. Slow songs down and see every chord, string and strum. Acoustic, classic, electric and bass.
Life & fun · 9d ago · guitoro.com
Carrier settings from iPhone, Pixel and Galaxy firmware, decoded and compared: APNs, VoLTE, 5G and Wi-Fi Calling per carrier, and what each build changed.
Life & fun · 13d ago · carrierexplode.com
Life & fun · 23d ago · space.bl2.net
Source: Show HN post ↗
Launched alongside, April 2021
the whole month →
Build your landing page with these 100+ tools
Growth · 2021 · landingpage.fyi
- PFPDFs from HTML▲742
Life & fun · 2021 · pdf.math.dev