Life & fun · alternatives · 2026

24 alternatives to An interactive tutorial on symmetric encryption

symmetric encryption, speck, block modes, brute-force, nonce reuse

Below are 24 products that do a similar job, ranked by how close each is in meaning and then by launch-day votes. An interactive tutorial on symmetric encryption launched in 2022; newer entries below may have overtaken it.

1. 1
   Re/code Decode - Y Combinator's Sam Altman▲92

   and the internet of things and Google

   2015 · serve.castfire.com · its alternatives →

2. 2
   Flippy Bit And The Attack Of The Hexadecimals▲78

   Bitwise operations and conversions to hexadecimals

   2016 · flippybitandtheattackofthehexadecimalsfrombase16.com · its alternatives →

3. 3
   FractalCrypt 2.0 – free deniable encryption cryptoarchiver▲128

   Free cross-platform deniable encryption cryptoarchiver - GitHub - zorggomat/FractalCryptGUI: Free cross-platform deniable encryption cryptoarchiver

   2021 · github.com · its alternatives →

4. 4
   BlockScore▲106

   The intelligent ID verification system

   2014 · plaid.com · its alternatives →

5. 5
   StealthDrop – Anonymous crypto airdrops using zero-knowledge proofs▲105

   Hi HN, We (myself, Adhyyan1252 and yush_g) are undergrad students that hacked out this side project last month during Hack Lodge[1] (the ideas and many of the underlying circuits for which came from the 0xPARC community[2])! We’re extremely excited to share this new primitive. Besides the technical challenges building this project that folks here would find interesting (fixing the ZK proof compiler, modifying nodeJS V8 params etc.), we think this is a very novel use case for ZK tech, and ECDSA inside ZK-SNARKs is a starting point that unlocks many other ideas! :D A summarized version of our…

   2022 · github.com · its alternatives →

6. 6
   NuFHE: A GPU implementation of fully homomorphic encryption in Python▲8

   NuCypher fully homomorphic encryption (NuFHE) library implemented in Python - nucypher/nufhe

   2018 · github.com · its alternatives →

7. 7AE
   Algebraic — Effortless macOS file encryption, integrated with Finder.▲7

   2022 · algebraic.cc · its alternatives →

8. 8
   crype – diffable/syncable encryption for files or shell pipes▲5

   2014 · code.ivysaur.me · its alternatives →

9. 9
   Public-Key Cryptography▲2

   IACR Conference on Practice and Theory (PKC 2016)

   2016 · namecheap.com · its alternatives →

10. 10
    Secure end-to-end client sessions and API calls using crypto key pairs▲9

    Hello. I made this project as an experiment in using key cryptography for user identity in a client server model, and for some future peer to peer projects that I am working on. I am looking for feedback, please let me know what you think. Also, Merry Christmas to HN! :-)

    2022 · github.com · its alternatives →

11. 11CA
    Certera – A central validation server for Let's Encrypt certificates▲8

    2019 · docs.certera.io · its alternatives →

12. 12
    Crypto 101▲13

    An introductory course on cryptography for programmers

    2014 · crypto101.io · its alternatives →

13. 13HI
    "Have I Been Pwned” with homomorphic encryption▲5

    2023 · passwords.blyss.dev · its alternatives →

14. 14OT
    On the security of the Linux disk encryption LUKS▲31

    In the past few days, there have been uncertainties and concerns about the LUKS (“Linux Unified Key Setup”) disk encryption, which is widely used on Linux. We publish our assessment of this here.

    2023 · dys2p.com · its alternatives →

15. 15
    The Mathematics of Secrets▲3

    Cryptography from Caesar Ciphers to Digital Encryption

    2017 · amazon.com · its alternatives →

16. 16
    RSA encryption explained with demo in Google Colab▲5

    2020 · colab.research.google.com · its alternatives →

17. 17WT
    Web Tunnels – Passwordless authentication for the web▲6

    2024 · pico.sh · its alternatives →

18. 18NG
    NSA-grade encryption and anonymization for health and financial data▲9

    2018 · nukleosome.com · its alternatives →

19. 19FG
    Freenet Ghost Keys: Anonymous, Verifiable Identities▲6

    2024 · freenet.org · its alternatives →

20. 20
    Dharma▲7

    An open protocol for borrowing/lending cryptoassets

    2018 · dharma.io · its alternatives →

21. 21
    Crypto data from multiple exchanges to multiple storage systems-Updated▲8

    2021 · github.com · its alternatives →

22. 22
    PyBV – A Python Implementation of the BV Homomorphic Encryption Scheme▲9

    DEPRECATED- see https://github.com/OpenMined/OpenMined or https://github.com/OpenMined/PySyft - iamtrask/PyBV

    2017 · github.com · its alternatives →

23. 23
    AES-256 brute force using structured logic (UUIDs and xy = x/y rule)▲11

    I’ve been experimenting with structured logic as a way to frame search spaces — not in an academic way, just as a personal project. I wanted to know: what happens if you initialize a brute-force run with a simple equality like xy = x / y? Not as a filter, just as a logical ignition point. I used AES-256-CBC encrypted files with UUID passwords and tested against a 1 million UUID space. It cracked it in under 40 seconds. Then I scaled it to a 1 billion UUID range, and it still found the key without issue. This isn’t a crypto tool, and I’m not trying to solve any cryptographic problems.…

    2025 · github.com · its alternatives →

24. 24OS
    Open-source, MIT JavaScript crypto library behind Skiff Mail▲8

    2023 · npmjs.com · its alternatives →

Ranked by how close each launch is in meaning, then by votes. Prices were read from each product’s own site when checked and can change. Refine with your own description →