- [crypto-algorithms](https://github.com/B-Con/crypto-algorithms) - Basic implementations of standard cryptography algorithms, like AES and SHA-1.
- [libgcrypt](http://directory.fsf.org/wiki/Libgcrypt) - Cryptographic library developed as a separated module of GnuPG.
- [libsodium](https://github.com/jedisct1/libsodium) - Modern and easy-to-use crypto library.
- [libtomcrypt](https://github.com/libtom/libtomcrypt) - Fairly comprehensive, modular and portable cryptographic toolkit.
- [libVES.c](https://github.com/vesvault/libVES.c) - End-to-end encrypted sharing via cloud repository, secure recovery through a viral network of friends in case of key loss.
- [milagro-crypto-c](https://github.com/apache/incubator-milagro-crypto-c) - Small, self-contained and fast open source crypto library. It supports RSA, ECDH, ECIES, ECDSA, AES-GCM, SHA2, SHA3 and Pairing-Based Cryptography.
- [monocypher](https://monocypher.org) - small, portable, easy to use crypto library inspired by libsodium and TweetNaCl.
- [NaCl](https://nacl.cr.yp.to/) - High-speed library for network communication, encryption, decryption, signatures, etc.
- [OpenSSL](https://github.com/openssl/openssl) - TLS/SSL and crypto library.
- [PolarSSL](https://tls.mbed.org/) - PolarSSL makes it trivially easy for developers to include cryptographic and SSL/TLS capabilities in their (embedded) products, facilitating this functionality with a minimal coding footprint.
- [RHash](https://github.com/rhash/RHash) - Great utility for computing hash sums.
- [themis](https://github.com/cossacklabs/themis) - High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption). Ported on many languages and platforms, suitable for client-server infastructures.
- [tiny-AES128-C](https://github.com/kokke/tiny-AES128-C) - Small portable AES128 in C.
- [wolfSSL](https://github.com/wolfSSL/wolfssl) - Small, fast, portable implementation of TLS/SSL for embedded devices to the cloud.
- [xxHash](https://github.com/Cyan4973/xxHash) - Extremely fast hash algorithm.
### C++
- [Botan](https://botan.randombit.net/) - Cryptography library written in `C++11`.
- [cryptopp](https://github.com/weidai11/cryptopp) - Crypto++ Library is a free C++ class library of cryptographic schemes.
- [HElib](https://github.com/shaih/HElib) - Software library that implements homomorphic encryption (HE).
- [libsodium-net](https://github.com/adamcaudill/libsodium-net) - Secure cryptographic library, port of libsodium for .NET.
- [Microsoft .NET Framework Cryptography Model](https://docs.microsoft.com/en-us/dotnet/standard/security/cryptography-model) - The .NET Framework implementations of many standard cryptographic algorithms.
- [PCLCrypto](https://github.com/AArnott/PCLCrypto) - Provides cryptographic APIs over algorithms implemented by the platform, including exposing them to portable libraries.
- [clj-crypto](https://github.com/macourtney/clj-crypto/) - Wrapper for Bouncy Castle.
- [pandect](https://github.com/xsc/pandect) - Fast and easy-to-use Message Digest, Checksum and HMAC library for Clojure.
- [secrets.clj](https://github.com/lk-geimfari/secrets.clj) - A Clojure library designed to generate cryptographically strong random numbers suitable for managing data such as passwords, account authentication, security tokens, and related secrets.
### Common Lisp
- [crypto-shortcuts](https://github.com/Shinmera/crypto-shortcuts) - Collection of common cryptography functions.
- [ironclad](http://method-combination.net/lisp/ironclad/) - Collection of common crypto shortcuts.
- [trivial-ssh](https://github.com/eudoxia0/trivial-ssh) - SSH client library for Common Lisp (Built on libssh2).
### Delphi
- [DelphiEncryptionCompendium](https://github.com/winkelsdorf/DelphiEncryptionCompendium/releases) - Cryptographic library for Delphi.
- [LockBox](https://sourceforge.net/projects/tplockbox/) - LockBox 3 is a Delphi library for cryptography.
- [SynCrypto](https://github.com/synopse/mORMot/blob/master/SynCrypto.pas) - Fast cryptographic routines (hashing and cypher), implementing AES, XOR, RC4, ADLER32, MD5, SHA1, SHA256 algorithms, optimized for speed.
- [TForge](https://bitbucket.org/sergworks/tforge) - TForge is open-source crypto library written in Delphi, compatible with FPC.
### Elixir
- [cipher](https://github.com/rubencaro/cipher) - Elixir crypto library to encrypt/decrypt arbitrary binaries.
- [cloak](https://github.com/danielberkompas/cloak) - Cloak makes it easy to use encryption with Ecto.
- [comeonin](https://github.com/elixircnx/comeonin) - Password authorization (bcrypt) library for Elixir.
- [elixir-rsa](https://github.com/trapped/elixir-rsa) - `:public_key` cryptography wrapper for Elixir.
- [elixir_tea](https://github.com/keichan34/elixir_tea) - TEA implementation in Elixir.
- [ex_crypto](https://github.com/ntrepid8/ex_crypto) - Elixir wrapper for Erlang `:crypto` and `:public_key` modules. Provides sensible defaults for many crypto functions to make them easier to use.
- [exgpg](https://github.com/rozap/exgpg) - Use gpg from Elixir.
- [pot](https://github.com/yuce/pot) - Erlang library for generating one time passwords compatible with Google Authenticator.
- [siphash-elixir](https://github.com/zackehh/siphash-elixir) - Elixir implementation of the SipHash hash family.
### Erlang
- [crypto](http://erlang.org/doc/apps/crypto/) - Functions for computation of message digests, and functions for encryption and decryption.
- [public_key](http://erlang.org/doc/man/public_key.html) - Provides functions to handle public-key infrastructure.
### Go
- [crypto](https://golang.org/pkg/crypto/) - Official Website Resources.
- [asmCrypto](https://github.com/vibornoff/asmcrypto.js/) - JavaScript implementation of popular cryptographic utilities with performance in mind.
- [bcrypt-Node.js](https://github.com/shaneGirish/bcrypt-Node.js) - Native implementation of bcrypt for Node.js.
- [cifre](https://github.com/openpeer/cifre) - Fast crypto toolkit for modern client-side JavaScript.
- [closure-library](https://github.com/google/closure-library/tree/master/closure/goog/crypt) - Google's common JavaScript library.
- [cryptico](https://github.com/wwwtyro/cryptico) - Easy-to-use encryption system utilizing RSA and AES for JavaScript.
- [crypto-js](https://github.com/brix/crypto-js) - JavaScript library of crypto standards.
- [cryptojs](https://github.com/gwjjeff/cryptojs) - Provide standard and secure cryptographic algorithms for Node.js.
- [forge](https://github.com/digitalbazaar/forge) - Native implementation of TLS in JavaScript and tools to write crypto-based and network-heavy webapps.
- [IronNode](https://docs.ironcorelabs.com/ironnode-sdk/overview) - Transform encryption library, a variant of proxy re-encryption, for encrypting to users or groups, and easily adding strong data controls to Node.js apps.
- [IronWeb](https://docs.ironcorelabs.com/ironweb-sdk/overview) - Transform encryption library, a variant of proxy re-encryption, for easily managing end-to-end encryption securely in the browser.
- [javascript-crypto-library](https://github.com/clipperz/javascript-crypto-library) - JavaScript Crypto Library provides web developers with an extensive and efficient set of cryptographic functions.
- [js-nacl](https://github.com/tonyg/js-nacl) - Pure-JavaScript High-level API to Emscripten-compiled libsodium routines.
- [jsencrypt](https://github.com/travist/jsencrypt) - JavaScript library to perform OpenSSL RSA Encryption, Decryption, and Key Generation.
- [JShashes](https://github.com/h2non/jshashes) - Fast and dependency-free cryptographic hashing library for Node.js and browsers (supports MD5, SHA1, SHA256, SHA512, RIPEMD, HMAC).
- [jsrsasign](https://github.com/kjur/jsrsasign) - The 'jsrsasign' (RSA-Sign JavaScript Library) is an opensource free cryptography library supporting RSA/RSAPSS/ECDSA/DSA signing/validation.
- [jsThemis](https://github.com/cossacklabs/themis/wiki/Nodejs-Howto) - JavaScript wrapper on Themis. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
- [libsodium.js](https://github.com/jedisct1/libsodium.js) - libsodium compiled to pure JavaScript, with convenient wrappers.
- [libVES.js](https://github.com/vesvault/libVES) - End-to-end encrypted sharing via cloud repository, secure recovery through a viral network of friends in case of key loss.
- [milagro-crypto-js](https://github.com/apache/incubator-milagro-crypto-js) - MCJS is a standards compliant JavaScript cryptographic library with no external dependencies except for the random seed source. Compatible for Node.js and browser. It supports RSA, ECDH, ECIES, ECDSA, AES-GCM, SHA2, SHA3, Pairing-Based Cryptography and New Hope.
- noble - high-security, easily auditable set of contained cryptographic libraries and tools. Zero dependencies each.
- [node.bcrypt.js](https://github.com/ncb000gt/node.bcrypt.js) - bcrypt for Node.js.
- [OpenPGP.js](https://github.com/openpgpjs/openpgpjs) - OpenPGP implementation for JavaScript.
- [PolyCrypt](https://github.com/polycrypt/polycrypt) - Pure JS implementation of the WebCrypto API.
- [rusha](https://github.com/srijs/rusha) - High-performance pure-javascript SHA1 implementation suitable for large binary data, reaching up to half the native speed.
- [Bouncy Castle](https://www.bouncycastle.org/java.html) - All-purpose cryptographic library. JCA provider, wide range of functions from basic helpers to PGP/SMIME operations.
- [Flexiprovider](http://www.flexiprovider.de/) - Powerful toolkit for the Java Cryptography Architecture.
- [GDH](https://github.com/maxamel/GDH) - Generalized Diffie-Hellman key exchange Java library for multiple parties built on top of the Vert.x framework.
- [Google Keyczar](https://github.com/google/keyczar) - Easy to use, yet safe encryption framework with key versioning.
- [Google Tink](https://github.com/google/tink) - A small crypto library that provides a safe, simple, agile and fast way to accomplish some common crypto tasks.
- [Java Themis](https://github.com/cossacklabs/themis/wiki/Java-and-Android-Howto) - Java/Android wrapper on Themis. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
- [jbcrypt](http://www.mindrot.org/projects/jBCrypt/) - jBCrypt is an implementation the OpenBSD Blowfish password hashing
algorithm.
- [Keycloak](https://github.com/keycloak/keycloak) - Open Source Identity and Access Management For Modern Applications and Services.
- [keywhiz](https://github.com/square/keywhiz) - A system for distributing and managing secrets.
- [Password4j](https://github.com/Password4j/password4j) - A Java user-friendly cryptographic library for hashing and checking passwords with different Key derivation functions (KDFs) and Cryptographic hash functions (CHFs).
- [Project Kalium](http://abstractj.github.io/kalium/) - Java binding to the Networking and Cryptography (NaCl) library with the awesomeness of libsodium.
- [scrypt](https://github.com/wg/scrypt) - Pure Java implementation of the scrypt key derivation function and a JNI interface to the C implementations, including the SSE2 optimized version.
- [securitybuilder](https://github.com/tersesystems/securitybuilder) - Fluent Builder API for JCA/JSSE objects.
### Julia
- [Crypto.jl](https://github.com/danielsuo/Crypto.jl) - Library that wraps OpenSSL, but also has pure Julia implementations for reference.
- [MbedTLS.jl](https://github.com/JuliaWeb/MbedTLS.jl) - Wrapper around the mbed TLS and cryptography C libary.
- [Nettle.jl](https://github.com/staticfloat/Nettle.jl) - Julia wrapper around nettle cryptographic hashing/
encryption library providing MD5, SHA1, SHA2 hashing and HMAC functionality, as well as AES encryption/decryption.
- [ObjC Themis](https://github.com/cossacklabs/themis/wiki/Objective-C-Howto) - ObjC wrapper on Themis for iOS and macOS. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
- [ObjectivePGP](https://github.com/krzyzanowskim/ObjectivePGP) - ObjectivePGP is an implementation of OpenPGP protocol for iOS and macOS. OpenPGP is the most widely used email encryption standard.
- [RNCryptor](https://github.com/RNCryptor/RNCryptor) - CCCryptor (AES encryption) wrappers for iOS and Mac.
### PHP
- [halite](https://paragonie.com/project/halite) - Simple library for encryption using `libsodium`.
- [libsodium-laravel](https://github.com/scrothers/libsodium-laravel) - Laravel Package Abstraction using `libsodium`.
- [PHP Encryption](https://github.com/defuse/php-encryption) - Library for encrypting data with a key or password in PHP.
- [PHP Themis](https://github.com/cossacklabs/themis/wiki/PHP-Howto) - PHP wrapper on Themis. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
- [TCrypto](https://github.com/timoh6/TCrypto) - TCrypto is a simple and flexible PHP 5.3+ in-memory key-value storage library.
### Python
- [bcrypt](https://github.com/pyca/bcrypt) - Modern password hashing for your software and your servers.
- [charm](https://github.com/JHUISI/charm) - Framework for rapidly prototyping cryptosystems.
- [Crypto-Vinaigrette](https://github.com/aditisrinivas97/Crypto-Vinaigrette) - Quantum resistant asymmetric key generation tool for digital signatures.
- [cryptography](https://cryptography.io/en/latest/) - Python library which exposes cryptographic recipes and primitives.
- [cryptopy](https://sourceforge.net/projects/cryptopy/) - Pure python implmentation of cryptographic algorithms and applications.
- [django-cryptography](https://github.com/georgemarshall/django-cryptography) - Easily encrypt data in Django.
- [hashids](https://github.com/davidaurelio/hashids-python) - Implementation of [hashids](http://hashids.org) in Python.
- [paramiko](http://www.paramiko.org/) - Python implementation of the SSHv2 protocol, providing both client and server functionality.
- [Privy](https://github.com/ofek/privy) - An easy, fast lib to correctly password-protect your data.
- [pycryptodome](https://github.com/Legrandin/pycryptodome) - Self-contained Python package of low-level cryptographic primitives.
- [PyElliptic](https://github.com/yann2192/pyelliptic) - Python OpenSSL wrapper. For modern cryptography with ECC, AES, HMAC, Blowfish.
- [pynacl](https://github.com/pyca/pynacl) - Python binding to the Networking and Cryptography (NaCl) library.
- [pythemis](https://github.com/cossacklabs/themis/wiki/Python-Howto) - Python wrapper on Themis. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
### R
- [rscrypt](https://github.com/rstudio/rscrypt) - Package for a collection of scrypt cryptographic functions.
### Ruby
- [bcrypt-ruby](https://github.com/codahale/bcrypt-ruby) - Ruby binding for the OpenBSD bcrypt() password hashing algorithm, allowing you to easily store a secure hash of your users' passwords.
- [RbNaCl](https://github.com/cryptosphere/rbnacl) - Ruby binding to the Networking and Cryptography (NaCl) library.
- [Ruby Themis](https://github.com/cossacklabs/themis/wiki/Ruby-Howto) - Ruby wrapper on Themis. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
### Rust
- [dalek cryptography](https://github.com/dalek-cryptography/) - Fast yet safe mid-level API for ECC, Bulletproofs, and more.
- [mundane](https://github.com/google/mundane) - is a Rust cryptography library backed by BoringSSL that is difficult to misuse, ergonomic, and performant.
- [proteus](https://github.com/wireapp/proteus) - Axolotl protocol implementation, without header keys, in Rust.
- [recrypt](https://github.com/IronCoreLabs/recrypt-rs) - A pure-Rust library that implements cryptographic primitives for building a multi-hop Proxy Re-encryption scheme, known as Transform Encryption.
- [ring](https://github.com/briansmith/ring) - Safe, fast, small crypto using Rust & BoringSSL's cryptography primitives.
- [rust-crypto](https://github.com/DaGenix/rust-crypto) - Mostly pure-Rust implementation of various cryptographic algorithms.
- [rust-openssl](https://github.com/sfackler/rust-openssl) - OpenSSL bindings for Rust.
- [rustls](https://github.com/ctz/rustls) - Rustls is a new, modern TLS library written in Rust.
- [sodiumoxide](https://github.com/dnaq/sodiumoxide) - Sodium Oxide: Fast cryptographic library for Rust (bindings to libsodium).
- [suruga](https://github.com/klutzy/suruga) - TLS 1.2 implementation in Rust.
- [webpki](https://github.com/briansmith/webpki) - Web PKI TLS X.509 certificate validation in Rust.
### Scala
- [recrypt](https://github.com/IronCoreLabs/recrypt) - Transform encryption library for Scala.
- [scrypto](https://github.com/input-output-hk/scrypto) - Cryptographic primitives for Scala.
- [tsec](https://github.com/jmcardon/tsec) - A type-safe, functional, general purpose security and cryptography library.
### Swift
- [CryptoSwift](https://github.com/krzyzanowskim/CryptoSwift) - Crypto related functions and helpers for Swift implemented in Swift programming language.
- [IDZSwiftCommonCrypto](https://github.com/iosdevzone/IDZSwiftCommonCrypto) - Wrapper for Apple's [CommonCrypto](https://opensource.apple.com/source/CommonCrypto/) library written in Swift.
- [OpenSSL](https://github.com/Zewo/OpenSSL) - Swift OpenSSL for macOS and Linux.
- [SweetHMAC](https://github.com/jancassio/SweetHMAC) - Tiny and easy to use Swift class to encrypt strings using HMAC algorithms.
- [Swift-Sodium](https://github.com/jedisct1/swift-sodium) - Swift interface to the Sodium library for common crypto operations for iOS and macOS.
- [SwiftSSL](https://github.com/SwiftP2P/SwiftSSL) - Elegant crypto toolkit in Swift.
- [SwiftThemis](https://github.com/cossacklabs/themis/wiki/Swift-Howto) - Swift wrapper on Themis for iOS and macOS. High level crypto library for storing data (AES), secure messaging (ECC + ECDSA / RSA + PSS + PKCS#7) and session-oriented, forward secrecy data exchange (ECDH key agreement, ECC & AES encryption).
