#diffiehellman — Public Fediverse posts
Live and recent posts from across the Fediverse tagged #diffiehellman, aggregated by home.social.
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#cryptography #diffiehellman
Today @docta_gervais asked me to look at his article on encryption, and all of a sudden I was like: "Why the hell do we still use Diffie-Hellman?"Alice
- creates a new keypair (like DH)
- signs her public key with her long-term public key (like DH)
- sends her public key to Bob (like DH)Bob
- encrypts a random symmetric key with Alice's key (NEW)
- sends it to Alice (like DH)Alice
- decrypts the symmetric key and uses it for communication (NEW) -
#cryptography #diffiehellman
Today @docta_gervais asked me to look at his article on encryption, and all of a sudden I was like: "Why the hell do we still use Diffie-Hellman?"Alice
- creates a new keypair (like DH)
- signs her public key with her long-term public key (like DH)
- sends her public key to Bob (like DH)Bob
- encrypts a random symmetric key with Alice's key (NEW)
- sends it to Alice (like DH)Alice
- decrypts the symmetric key and uses it for communication (NEW) -
An #E2EE messaging app unaffected by #ChatControl
* App: https://chat.positive-intentions.com/
* Code: https://github.com/positive-intentions/chat
* Reddit: https://www.reddit.com/r/positive_intentionsHow it works: https://positive-intentions.com/docs/projects/chat
TLDR: I'm working on a #P2P messaging #webapp. Webapps are generally not considered secure because of the nature of serving statics over the internet. This is correct, but not a limitation of this project. (#selfhosting options: https://positive-intentions.com/blog/docker-ios-android-desktop).
As a webapp, I can provide the app with zero-installation and no-registration. The app is only using (local-only) browser storage (specifically #indexedDB). So in a P2P interaction, the traditional concept of "the cloud" is just the physical devices connected over #WebRTC. This allows for things like P2P authentication: https://positive-intentions.com/blog/security-privacy-authentication.
Future:
I'm aiming to create the most secure messaging app out there... (more than #Signal, #Simplex, #threema, #session, #deltachat, #bitchat, etc). I know I have a long way to go to get there. The UI is fairly ugly for the average user, but I think the mechanics are working as expected. I think #JavaScript is underrated in what you can do with it. I'm actively investigating improving the #encryption approach further to align to how the Signal protocol works (currently using a #DiffieHellman key-exchange).Support:
In the age of #ChatControl, I would like to keep this project #opensource, but open-source funding is not working for me. I don't want your donations (but don't let that stop you) because it isn't sustainable for a long-term project. I have so far only experienced grant-funding rejections. I have no idea what I'm doing in trying to get funding for this project, so any support/advice is appreciated. In recognition of the project in its current state not being able to get funding... (sorry) I will have to go #closedsource (which I'd like to avoid because it undermines several #cybersecurity claims I'd like to make). I don't accept collaboration on the project because this would make tough decisions like going closed-source also immoral.#privacy #security #messaging #decentralized #peer2peer #webdev #cryptography #selfhosted #FOSS #tech #infosec #developer #funding #startup
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https://youtu.be/NmM9HA2MQGI?si=CdVaPmXTlVnxXzE8
This is a (Diffie-)hell(man) of an explanation!! #encrytion #diffiehellman
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Новый кандидат в односторонние функции для криптографии и PRNG
В мире криптографии и безопасных вычислений постоянно ищутся новые, надёжные математические структуры. Традиционные подходы часто опираются на классические алгебраические группы, но что, если нестандартные операции могут предложить уникальные свойства для построения защищённых систем? В этой статье я хочу предложить вашему вниманию полилинейные функции с линейными сдвигами и рассмотреть их потенциал для обмена ключами и создания криптографических примитивов, таких как хеш-функции и генераторы псевдослучайных чисел.
https://habr.com/ru/articles/915928/
#односторонняя_функция #генератор_псевдослучайных_чисел #хешфункции #обмен_ключами #diffiehellman #prng #шифрование
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🥸 Oh, look! Another cryptographic revelation! Diffie-Hellman is dead, long live Elliptic Curve Diffie-Hellman! 🤯 Because what the world definitely needed was more #jargon masquerading as progress. 🧙♂️
https://keymaterial.net/2025/05/23/there-is-no-diffie-hellman-but-elliptic-curve-diffie-hellman/ #cryptography #DiffieHellman #EllipticCurve #technews #cybersecurity #HackerNews #ngated -
🥸 Oh, look! Another cryptographic revelation! Diffie-Hellman is dead, long live Elliptic Curve Diffie-Hellman! 🤯 Because what the world definitely needed was more #jargon masquerading as progress. 🧙♂️
https://keymaterial.net/2025/05/23/there-is-no-diffie-hellman-but-elliptic-curve-diffie-hellman/ #cryptography #DiffieHellman #EllipticCurve #technews #cybersecurity #HackerNews #ngated -
There Is No Diffie-Hellman but Elliptic Curve Diffie-Hellman
https://keymaterial.net/2025/05/23/there-is-no-diffie-hellman-but-elliptic-curve-diffie-hellman/
#HackerNews #EllipticCurveDiffieHellman #DiffieHellman #Cryptography #CyberSecurity #TechNews
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There Is No Diffie-Hellman but Elliptic Curve Diffie-Hellman
https://keymaterial.net/2025/05/23/there-is-no-diffie-hellman-but-elliptic-curve-diffie-hellman/
#HackerNews #EllipticCurveDiffieHellman #DiffieHellman #Cryptography #CyberSecurity #TechNews
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🔒 Securing Every Connection with Diffie-Hellman 🔑
At RELIANOID, trust and security are our top priorities. That’s why we’ve integrated the Diffie-Hellman key exchange protocol across all our solutions. This revolutionary cryptographic method ensures secure communication over public channels, protecting against evolving cyber threats.
Let’s build a safer digital world together! 🌐✨
#CyberSecurity #Encryption #DiffieHellman #SecureCommunication #RELIANOID
https://www.relianoid.com/blog/robust-keys-generation-for-the-highest-security/ -
#ZTE-Mobilfunk: Immer dieselben Schlüssel für Voice over WiFi | Security https://www.heise.de/news/ZTE-Mobilfunk-Immer-dieselben-Schluessel-fuer-Voice-over-WiFi-9817694.html #VoWiFi #Verschlüsselung #encryption #DiffieHellman
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🔐 Embrace Secure Communication: Exploring the Power of Diffie-Hellman Key Exchange #Cybersecurity #Encryption #DigitalPrivacy
Dive into our latest article where we unravel the intricacies of the Diffie-Hellman key exchange protocol and its significance in modern cybersecurity. #DiffieHellman #SecurityProtocols #DigitalEncryption
https://www.relianoid.com/blog/robust-keys-generation-for-the-highest-security/
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Алгоритм Diffie-Hellman: Пишем приватный мессенджер на Go
Это продолжение прошлой статьи про данный алгоритм. Где я рассказывал про возможность общения между двумя пользователями без прямого обмена ключом шифрования. Я уже описывал идею создания прозрачного Open-Source мессенджера на основе этого алгоритма и хочу представить вам его самую простую реализацию с примерами кода. Кода будет много...
https://habr.com/ru/articles/802815/
#golang #ethereum #diffiehellman #example #cryptography #fyne
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Recent ships of the human space fleet are equipped with #DiffieHellman-Drives (which enable them to exchange their position with other, far away ships without allowing outsiders to intercept) and #FloydSteinberg shields (which diffuses all incoming attacks).
Interstellar navigation was very easy after all ships computers were programmed with the #Bresenham-Algorithm.
All crew members were trained in all details of the #Kernighan-#Ritchie protocol. -
Recent ships of the human space fleet are equipped with #DiffieHellman-Drives (which enable them to exchange their position with other, far away ships without allowing outsiders to intercept) and #FloydSteinberg shields (which diffuses all incoming attacks).
Interstellar navigation was very easy after all ships computers were programmed with the #Bresenham-Algorithm.
All crew members were trained in all details of the #Kernighan-#Ritchie protocol. -
In den 1970er Jahren kam es zu einer revolutionären Idee in der Kryptografie: Wer sicher kommunizieren wollte, veröffentlichte seine Schlüssel – ein Albtraum für die NSA.
Die fabelhafte Welt der Mathematik: Der Algorithmus, der die NSA in den Wahnsinn trieb
#Kryptografie #FabelhafteMathematik #Diffie-Hellman #NSA #Cybersecurity #Algorithmus #Verschlüsselung #Zahlentheorie #Mathematik #ITTech -
In den 1970er Jahren kam es zu einer revolutionären Idee in der Kryptografie: Wer sicher kommunizieren wollte, veröffentlichte seine Schlüssel – ein Albtraum für die NSA.
Die fabelhafte Welt der Mathematik: Der Algorithmus, der die NSA in den Wahnsinn trieb
#Kryptografie #FabelhafteMathematik #Diffie-Hellman #NSA #Cybersecurity #Algorithmus #Verschlüsselung #Zahlentheorie #Mathematik #ITTech -
How many valid X25519 private keys are there?
https://crypto.stackexchange.com/questions/103673/how-many-valid-x25519-private-keys-are-there
#ellipticcurves #diffiehellman #ed25519 #x25519 -
How many valid X25519 private keys are there?
https://crypto.stackexchange.com/questions/103673/how-many-valid-x25519-private-keys-are-there
#ellipticcurves #diffiehellman #ed25519 #x25519 -
TLS 1.3 RSA is no longer supported and RSA and DH are fundamentally different?
https://crypto.stackexchange.com/questions/103559/tls-1-3-rsa-is-no-longer-supported-and-rsa-and-dh-are-fundamentally-different
#diffiehellman #publickey #rsa -
TLS 1.3 RSA is no longer supported and RSA and DH are fundamentally different?
https://crypto.stackexchange.com/questions/103559/tls-1-3-rsa-is-no-longer-supported-and-rsa-and-dh-are-fundamentally-different
#diffiehellman #publickey #rsa -
@fluffy
#PGP is generally good for securely establishing a connection and relationship, after which point #OMEMO has added benefits like #forwardSecrecy, eg. in case your key is broken they can't go forward or back though messages. Forward protected by #DiffieHellman, backward by a one-way hash function. If we remember correctly.There are a growing list of fully #FOSS projects that use PGP and OMEMO.
See the hashtag (#)InternetApplications.
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@jz
This is not really how the #DiffieHellman key exchange works, but okay.
