1.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.
Ranked by Attention Score: stars gained over the last 180 complete days
23 repositories by Attention Score · May 10, 2026 – Nov 5, 2026 (UTC)
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.
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
The password hash Argon2, winner of PHC
A native implementation of TLS in Javascript and tools to write crypto-based and network-heavy webapps
A self-contained cryptographic library for Python
CryptoSwift is a growing collection of standard and secure cryptographic algorithms implemented in Swift
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.
A lightweight, secure, easy-to-use crypto library suitable for constrained environments.
A tiny (18.5 kB gzip), zero-dependency, Javascript library to perform OpenSSL RSA Encryption, Decryption, and Key Generation.
Library and command line tool to detect SHA-1 collision in a file
Cryptographic Primitive Code Generation by Fiat
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.
pure-python ECDSA signature/verification and ECDH key agreement
[DEPRECATED] Stanford Javascript Crypto Library
ObjectivePGP is an open-source library for iOS and macOS that provides developers with tools for implementing OpenPGP encryption and decryption, digital signing, and signature verification in their applications, thereby enhancing security and data integrity.
LockBox3 is a Delphi and C++Builder library for cryptography.
Common Lisp system for parsing and generating bcrypt password hashes