Top 23 C Cryptography Projects
-
-
website - https://libsodium.org/
-
Scout APM
Scout APM: A developer's best friend. Try free for 14-days. Scout APM uses tracing logic that ties bottlenecks to source code so you know the exact line of code causing performance issues and can get back to building a great product faster.
-
cjdns
An encrypted IPv6 network using public-key cryptography for address allocation and a distributed hash table for routing.
I was really excited for a moment, because I thought this was cjdns https://github.com/cjdelisle/cjdns.
-
I would be interested in the other SSL implementations:
- https://github.com/awslabs/s2n
- https://boringssl.googlesource.com/boringssl
Are these subpar implementations or there are other reasons not to use these?
-
If you want to see a real implemention of arbitrary sized integer math, mbedTLS is a great example:
https://github.com/ARMmbed/mbedtls/blob/development/library/...
All of the ECC code in that library relies on this code, which can be accelerated by dedicated hardware.
-
On a side note in case anyone was curious I came across that code reading through someone's AES in C implementation on github found here: https://github.com/kokke/tiny-AES-c
-
Project mention: 'include' statement directive keyword is missing from OpenSSL_8.1p1 | reddit.com/r/MacOS | 2021-09-26
That feature seems to have been added in 8.2 https://github.com/openssh/openssh-portable/commit/c2bd7f74b0e0f3a3ee9d19ac549e6ba89013abaf
-
-
Project mention: Tox: Decentralized and Encrypted Instant Messaging | news.ycombinator.com | 2021-10-05
It links to a bug report discussion where one of the developers states that they don't understand the security properties of tox very well[1].
I find that worrying.
-
Themis
Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.
Now, the real world work starts. We introduce interns to the world of popular cryptographic libraries, help them to make their first OSS contributions, and let them practice with our cryptographic library Themis which provides a high-level crypto API on 14 languages.
-
wolfssl
The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3!
Project mention: 5 horrific techniques that will make your co-developers really hate your code | reddit.com/r/programming | 2021-07-01Ugh. No kidding.
-
Thankfully, you can just use minisign instead (and age for encryption). Don't use gpg.
-
LibTomCrypt
LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining modes, pseudo-random number generators, public key cryptography and a plethora of other routines.
Project mention: What is the difference between sha512 and sha512_256? | reddit.com/r/cryptography | 2021-04-24The open source library libtomcrypto has two separate implementations of sha512. What is the difference between these implementations? Which is the version that would be most typically used?
-
swift-crypto
Open-source implementation of a substantial portion of the API of Apple CryptoKit suitable for use on Linux platforms.
Project mention: [HELP WANTED] Big number computation in Swift for RSA implementation | reddit.com/r/swift | 2021-08-22This doesn’t exactly answer your question, but you could always use swift-crypto for RSA.
-
LibreSSL
LibreSSL Portable itself. This includes the build scaffold and compatibility layer that builds portable LibreSSL from the OpenBSD source code. Pull requests or patches sent to [email protected] are welcome.
Project mention: [gentoo-dev] [News review] LibreSSL support discontinued | reddit.com/r/Gentoo | 2021-01-03On the plus side they have Ed25519, on the negative side we don't have BLAKE2 or X25519, etc.
-
PyNaCl Argon2i
-
bcrypt is a library and algorithm which we used above. This is the same code which is used by passlib and there's not really a reason to use this low-level library.
-
brainflayer
A proof-of-concept cracker for cryptocurrency brainwallets and other low entropy key alogrithms.
For fun, read about brainflayer https://github.com/ryancdotorg/brainflayer
-
Project mention: Problem: Can't verify Firo wallet keys. 'keys.gnupg.net' appears down | reddit.com/r/FiroProject | 2021-10-10
From the (I believe official) firo.org site on the download page (https://firo.org/get-firo/download/) the link to the public key (http://keys.gnupg.net/pks/lookup?op=vindex&fingerprint=on&search=0x1290A1D0FA7EE109) is not working and in fact all of "keys.gnupg.net" appears down.
-
bitcracker
BitCracker is the first open source password cracking tool for memory units encrypted with BitLocker
Project mention: Who is behind "Thegrideon Software" (specializing in brute-force tools)? | reddit.com/r/sysadmin | 2021-10-15So I decided to buy it, since I think 30 bucks is a fair price, even though it might just be a fancy wrapper for the open source bitcracker (I can't be bothered to create my own dictionary files and BitLocker Password is really easy with this).
-
-
Note that if you have untrusted input, you may want to use a defensive option for hashing involving a private key, such as SipHash[1]. Otherwise, an attacker who knows your hash functions can just pre-generate a large number of colliding elements and reduce your hash function to a linked list; given enough attacker-controlled elements, this can effectively amount to a DoS attack[2].
[1] https://github.com/veorq/SipHash
[2] https://www.aumasson.jp/siphash/siphashdos_29c3_slides.pdf
-
libhydrogen
A lightweight, secure, easy-to-use crypto library suitable for constrained environments.
Project mention: Ask HN: Are there small alternatives to libsodium/NaCL | news.ycombinator.com | 2021-08-31Are you possibly thinking of libhydrogen?
-
Project mention: Signal Adds a Payments Feature–With a Privacy-Focused Cryptocurrency | news.ycombinator.com | 2021-04-06
Index
What are some of the best open-source Cryptography projects in C? This list will help you:
| Project | Stars | |
|---|---|---|
| 1 | OpenSSL | 16,665 |
| 2 | libsodium | 9,603 |
| 3 | cjdns | 4,718 |
| 4 | s2n | 4,005 |
| 5 | mbedTLS | 3,188 |
| 6 | Tiny AES128 in C | 2,754 |
| 7 | openssh-portable | 1,614 |
| 8 | c-toxcore | 1,589 |
| 9 | Themis | 1,361 |
| 10 | wolfssl | 1,295 |
| 11 | minisign | 1,291 |
| 12 | LibTomCrypt | 1,163 |
| 13 | swift-crypto | 1,109 |
| 14 | LibreSSL | 1,054 |
| 15 | PyNacl | 813 |
| 16 | Bcrypt | 791 |
| 17 | brainflayer | 643 |
| 18 | firo | 584 |
| 19 | bitcracker | 504 |
| 20 | Swift-Sodium | 429 |
| 21 | SipHash | 408 |
| 22 | libhydrogen | 314 |
| 23 | wickr-crypto-c | 307 |
Are you hiring? Post a new remote job listing for free.
