1.openssl / openssl
General purpose TLS and crypto library
- cryptography
- openssl
- encryption
- tls
- ssl
- decryption
+328 stars
from 30,855 · score 5.80
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
11 repositories by Attention Score · Oct 5, 2026 – Nov 3, 2026 (UTC)
+76 stars
from 13,963 · score 4.34
3.Mbed-TLS / mbedtls
An open source, portable, easy to use, readable and flexible TLS library, and reference implementation of the PSA Cryptography API. Releases are on a varying cadence, typically around 3 - 6 months between releases.
+76 stars
from 6,974 · score 4.34
4.wolfSSL / 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 and DTLS 1.3! Update to wolfSSL 5.9.1 for the latest CVE fixes.
- ssl
- tls
- cryptography
- security
- openssl
- tls13
- +14 more
+29 stars
from 2,955 · score 3.40
5.P-H-C / phc-winner-argon2
The password hash Argon2, winner of PHC
+22 stars
from 5,377 · score 3.14
+19 stars
from 4,766 · score 3.00
7.bitcoin-core / secp256k1
Optimized C library for EC operations on curve secp256k1
+18 stars
from 2,484 · score 2.94
+12 stars
from 5,010 · score 2.56
9.B-Con / crypto-algorithms
Basic implementations of standard cryptography algorithms, like AES and SHA-1.
+11 stars
from 2,043 · score 2.48
10.libtom / 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.
- libtomcrypt
- cryptography
- c
- encryption
+10 stars
from 1,791 · score 2.40
11.cossacklabs / themis
Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.
- cryptography-library
- cryptography
- security
- golang
- ios
- swift
- +14 more
+8 stars
from 1,975 · score 2.20