1.openssl / openssl
General purpose TLS and crypto library
- cryptography
- openssl
- encryption
- tls
- ssl
- decryption
+1,298 stars
from 29,885 · score 7.17
Trending repositories
Ranked by Attention Score: stars gained over the last 180 complete days
38 repositories by Attention Score · May 8, 2026 – Nov 3, 2026 (UTC)
2.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.
+467 stars
from 6,583 · score 6.15
+456 stars
from 13,583 · score 6.12
4.BLAKE3-team / BLAKE3
the official Rust and C implementations of the BLAKE3 cryptographic hash function
+349 stars
from 6,158 · score 5.86
5.pyca / cryptography
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
- python
- cryptography
+285 stars
from 7,547 · score 5.66
6.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
+187 stars
from 2,797 · score 5.24
7.P-H-C / phc-winner-argon2
The password hash Argon2, winner of PHC
+145 stars
from 5,254 · score 4.98
+106 stars
from 5,417 · score 4.67
+101 stars
from 4,921 · score 4.62
10.bitcoin-core / secp256k1
Optimized C library for EC operations on curve secp256k1
+97 stars
from 2,405 · score 4.58
11.brix / crypto-js
JavaScript library of crypto standards.
+93 stars
from 16,306 · score 4.54
12.RustCrypto / hashes
Collection of cryptographic hash functions written in pure Rust
- cryptographic-hash-functions
- blake2
- gost
- streebog
- groestl
- md2
- +13 more
+91 stars
from 2,197 · score 4.52
13.lestrrat-go / jwx
Complete implementation of JWx (Javascript Object Signing and Encryption/JOSE) technologies for Go. #golang #jwt #jws #jwk #jwe
- jwt
- jwe
- jws
- jwk
- go
- golang
- +1 more
+84 stars
from 2,360 · score 4.44
+77 stars
from 4,708 · score 4.36
15.digitalbazaar / forge
A native implementation of TLS in Javascript and tools to write crypto-based and network-heavy webapps
- crypto
- cryptography
- x509
- message-digest
- aes
- asn1
- +14 more
+75 stars
from 5,275 · score 4.33
16.Legrandin / pycryptodome
A self-contained cryptographic library for Python
- cryptography
- security
- python
+71 stars
from 3,215 · score 4.28
17.krzyzanowskim / CryptoSwift
CryptoSwift is a growing collection of standard and secure cryptographic algorithms implemented in Swift
- swift
- aes
- cryptography
- commoncrypto
- cryptoswift
- md5
- +7 more
+64 stars
from 10,514 · score 4.17
+57 stars
from 4,056 · score 4.06
19.phpseclib / phpseclib
PHP Secure Communications Library
+55 stars
from 5,549 · score 4.03
+53 stars
from 5,923 · score 3.99
21.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
+50 stars
from 1,751 · score 3.93
+49 stars
from 7,756 · score 3.91
23.B-Con / crypto-algorithms
Basic implementations of standard cryptography algorithms, like AES and SHA-1.
+49 stars
from 2,005 · score 3.91
24.pallets / itsdangerous
Safely pass trusted data to untrusted environments and back.
- python
- security
- hmac
- serialization
- itsdangerous
- pallets
+47 stars
from 3,093 · score 3.87
25.tink-crypto / tinkArchived
Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.
- cryptography
- java
- cpp
- go
- objc
- crypto
- +2 more
+40 stars
from 13,496 · score 3.71
26.travist / jsencrypt
A tiny (18.5 kB gzip), zero-dependency, Javascript library to perform OpenSSL RSA Encryption, Decryption, and Key Generation.
+36 stars
from 6,770 · score 3.61
27.ankane / lockbox
Modern encryption for Ruby and Rails
- encryption
- activerecord
- activestorage
- carrierwave
- mongoid
- libsodium
+25 stars
from 1,586 · score 3.26
28.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
+24 stars
from 1,959 · score 3.22
+18 stars
from 11,188 · score 2.94
+18 stars
from 3,856 · score 2.94
31.QuipNetwork / hashsigs-solidity
Solidity contracts implementing hash based post quantum signatures
+13 stars
from 11,192 · score 2.64
32.kjur / jsrsasign
CAUTION: END OF SUPPORT ON 14 AUG 2026. The 'jsrsasign' (RSA-Sign JavaScript Library) is an opensource free cryptography library supporting RSA/RSAPSS/ECDSA/DSA signing/validation, ASN.1, PKCS#1/5/8 private/public key, X.509 certificate, CRL, OCSP, CMS SignedData, TimeStamp, CAdES and JSON Web Signature/Token in pure JavaScript.
- asn1
- x509
- certificate
- crl
- ocsp
- timestamp
- +11 more
+12 stars
from 3,357 · score 2.56
33.dchest / tweetnacl-js
Port of TweetNaCl cryptographic library to JavaScript
- crypto
- javascript
- authentication
- signature
- elliptic-curves
- secretbox
- +9 more
+10 stars
from 1,913 · score 2.40
34.signalapp / libsignal-protocol-javaArchived
The repository host gives no description.
+10 stars
from 1,835 · score 2.40
35.google / highwayhashArchived
Fast strong hash functions: SipHash/HighwayHash
+7 stars
from 1,597 · score 2.08
36.bitwiseshiftleft / sjcl
[DEPRECATED] Stanford Javascript Crypto Library
+6 stars
from 7,181 · score 1.95
37.QuipNetwork / hashsigs-ts
Hash-based signatures in typescript, WOTS+
+5 stars
from 11,177 · score 1.79
38.QuipNetwork / hashsigs-py
The repository host gives no description.
+5 stars
from 11,169 · score 1.79