Cryptography
Cryptography, or cryptology is the practice and study of techniques for secure communication in the presence of adversarial behavior. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages.
- GitHub: https://github.com/topics/cryptography
- Wikipedia: https://en.wikipedia.org/wiki/Cryptography
- Last updated: 2026-07-15 00:06:57 UTC
- JSON Representation
https://github.com/chrishubert/password-manager-crypt
๐ Secure, zero-dependency cryptographic library for password managers with universal runtime support (Node.js, CloudFlare Workers, Browsers)
browser cloudflare-workers cryptography encryption nodejs password-manager security typescript webcrypto zero-knowledge
Last synced: 17 May 2026
https://github.com/madhurimarawat/codeculture-daily
A daily programming challenge repository where fun meets learning! With 39 challenges over 39 days, it helps coders enhance skills through practical tasks and interview prep. While maintenance is paused, contributions are welcome, and future expansions are planned to keep learning ongoing.
beginner-friendly code-repository cryptography daily-problems daily-progaramming intemediate-questions java javascript non-tech-questions official-solutions personality-development problem-of-the-day programming-contest python soft-skills tech-questions technologies tools website-deploy winner-announcement
Last synced: 10 Apr 2026
https://github.com/varun-doshi/relliptic
Finite Field Elliptic Curves in rust
cryptography elliptic-curves rust zk
Last synced: 20 Jul 2025
https://github.com/harmon758/the-cryptopals-crypto-challenges
The Cryptopals (Matasano) Crypto Challenges
crypto cryptography cryptopals cryptopals-challenges cryptopals-crypto-challenges matasano matasano-crypto-challenges matasano-cryptopals-challenge matasano-cryptopals-challenges
Last synced: 17 Mar 2025
https://github.com/constantiner/cram-md5-digest-js
CRAM-MD5 digester implementation in JavaScript
base64 client-server client-side cryptography digester hash javascript library md5
Last synced: 28 Mar 2025
https://github.com/thehashiramasenju/dag-livestocx
๐พ LivestocX: Revolutionizing LiveStock Asset finances through blockchain | Farmers tokenize assets, investors fund globally | Built for BlockDAG Hackathon 2025
backend blockchain blockchain-technology blockdag blockdagtestnet cryptocurrency cryptography dapp decentralized ethereum ethereum-blockchain ethersjs front-end-development primordial reactjs solidity vercel vercel-deployment webapp
Last synced: 09 Apr 2026
https://github.com/sharif-minhaz/one-time_pad_algo-otm
One Time Pad algorithm (OTP) is a symmetric key type algorithm which means that the key used to perform encryption and decryption is the same key
Last synced: 23 Jun 2025
https://github.com/simon-greatrix/sec-prng
Secure random number generation
cryptography java prng security
Last synced: 12 Jan 2026
https://github.com/ibnaleem/cipherlock
๐ Encrypt Your Files and Directories
cipher cipher-algorithms cryptography encryption encryption-algorithms encryption-decryption encryption-tool file-encryption
Last synced: 08 Jul 2025
https://github.com/lancern/enigma
Enigma machine emulator and its crack procedure on modern computers
cryptography enigma enigma-machine rust
Last synced: 02 Jul 2026
https://github.com/sebastienrousseau/cmn
A Rust library for accessing a collection of mathematical and cryptographic constants
avogadro boltzmann constants cryptography data-structures development-tools euler gamma golden-ratio hash mathematics pi planck rust silver-ratio squareroot tau
Last synced: 28 Mar 2025
https://github.com/rdner/uncrypticated
cryptography in Go made easy as it should be
Last synced: 15 Dec 2025
https://github.com/stripedpajamas/cryptopals-resources
resources to help solve cryptopals challenges without spoiling anything
cryptography cryptopals cryptopals-challenges cryptopals-crypto-challenges help information infosec links resource
Last synced: 19 Jan 2026
https://github.com/nezutero/crypty
abstraction on built in crypto modules
aes-encryption crypto cryptography des-encryption encryption go golang rsa rsa-cryptography rsa-encryption
Last synced: 17 Mar 2025
https://github.com/darxisr/salsa20
Salsa20 encryption/decryption without libraries with GUI
cipher cryptography decryption development encryption gui open-source pyqt5 python salsa20 source-code tools
Last synced: 03 Apr 2025
https://github.com/olucascruz/securechat_frontend
Frontend de aplicaรงรฃo web de chat com criptografia
chat cryptography react reactjs vite
Last synced: 16 May 2026
https://github.com/andersoncarrilho/sha256_elip
SHA256 and RIPMED160
bitcoin bitcoin-wallet cryptography cryptography-algorithms eliptic hash160 privatkeys ripmd160 sha256 sha256-crypt sha256-hash
Last synced: 07 Mar 2026
https://github.com/fardinkamal62/pixenc
Encrypt image by manipulating pixels
cryptography encryption go golang image manipulation pixels python security
Last synced: 21 Apr 2026
https://github.com/megrxu/cryptopals
Solutions for crypto challenges in crablang.
algorithms crypto cryptography rust
Last synced: 27 Mar 2025
https://github.com/ubgo/crypt
Batteries-included Go cryptography library: AES-256-GCM & ChaCha20-Poly1305 authenticated encryption, argon2id/bcrypt password hashing, HMAC & Ed25519 signing, HKDF, key rotation, KMS envelope encryption, and secure random โ safe defaults, stdlib-only, byte-for-byte interop with the TypeScript crypt-ts.
aead aes-gcm argon2 bcrypt chacha20-poly1305 cryptography ed25519 encryption envelope-encryption go golang hkdf hmac key-rotation password-hashing security
Last synced: 05 Jul 2026
https://github.com/ubgo/crypt-ts
TypeScript / Node.js cryptography library: AES-256-GCM & ChaCha20-Poly1305 authenticated encryption, HMAC & Ed25519 signing, HKDF, key rotation, time-locked tokens, and X25519 sealed-box โ safe defaults over node:crypto, zero deps, dual ESM+CJS, byte-for-byte interop with the Go crypt.
aead aes-gcm authenticated-encryption chacha20-poly1305 crypto cryptography ed25519 encryption esm hkdf hmac key-rotation nodejs security typescript webhook-signing
Last synced: 05 Jul 2026
https://github.com/anshvaid4/python
This repo is for those who want to get idea how tools in cyber security domain are created. I will add more codes shortly.
cryptography information-security python3 rpa-robots security
Last synced: 27 Mar 2025
https://github.com/petrknap/php-crypto-sodium
The library that packages functional `sodium_crypt_*` into objects.
aead aes asymmetric-cryptography block-cipher chacha20 cryptography curve25519 decryption encryption php php-library poly1305 public-key-cryptography secret-key-cryptography security sodium stream-cipher symmetric-cryptography x25519 xchacha20
Last synced: 10 Jul 2025
https://github.com/dannweeeee/zk-encode
Coding Bootcamp about ZK Proof Theory and Building
cairo cryptography modular-arithmetic rust zk-proofs zk-snarks
Last synced: 06 Sep 2025
https://github.com/10d9e/rs-fast-merkle
Rust Implementation of Streaming Merkle Root, Proof, and Verify (single leaf) from Luke Champine's paper: Streaming Merkle Proofs within Binary Numeral Trees
cryptography merkleproof merkletree rust
Last synced: 22 Jul 2025
https://github.com/maymeow/php-cryptography
๐ Cryptographic library for PHP
cryptography hacktoberfest hacktoberfest2021 php php-library
Last synced: 26 Jun 2025
https://github.com/remiblancher/post-quantum-pki
Quantum-Safe X.509 PKI with PQC & Hybrid Certificates in Go
certificate-authority certificates circl composite-certificates crypto-agility cryptography golang hybrid-certificates ml-dsa ml-kem nist pkcs11 pki post-quantum-cryptography pqc qpki quantum-safe slh-dsa tls x509
Last synced: 27 Jan 2026
https://github.com/sandeep-shaw10/cshb-model
This project aims to develop a secure and efficient model for end-to-end encrypted data transfer between a client and server, with a focus on promoting data integrity via hybrid blockchain
aes-512 blockchain cryptography cshb cshb-model end-to-end-encryption hybrid-blockchain steganography
Last synced: 06 Apr 2025
https://github.com/mrshankly/erlang-paillier
NIF bindings for the libpaillier cryptographic library
cryptography erlang homomorphic-encryption paillier
Last synced: 18 May 2026
https://github.com/christian-doucette/code_breaker
Cryptography web app with encryption and automatic decryption functions for various ciphers. Built with Flask.
Last synced: 11 Apr 2026
https://github.com/yaronkoresh/shual
Shual is a fibonacci based cryptography toolset.
cryptography encryption-decryption hash javascript padding
Last synced: 07 May 2025
https://github.com/crownedgrouse/preach
[WIP] Phi base Random Encoder Aimed for Cryptography Hardening
Last synced: 06 Apr 2025
https://github.com/hanzopgp/steganography
Cryptography project.
cryptography jupyter-notebook steganography university
Last synced: 29 May 2026
https://github.com/fbielejec/zksnarks-notes
notes & explorations of various zero knowledge protocols
cryptography elliptic-curves pairings snarks zero-knowledge
Last synced: 12 Jan 2026
https://github.com/hamarshehmhmd/passgenerator
PassGen is a simple command-line password generator written in Python. It allows users to customize password criteria by toggling lowercase and uppercase letters, digits, and special characters on and off. PassGen uses the secrets module to generate cryptographically secure random passwords of variable length.
command-line cryptography password-generator python security
Last synced: 29 Mar 2025
https://github.com/h5law/vinegar
A Golang library for creating and using Vigenere Ciphers
cryptography encryption-decryption vigenere vigenere-cipher vigenere-cipher-algorithm
Last synced: 17 Mar 2025
https://github.com/jakubvojvoda/rsa-cryptography
Simple RSA implementation using GMP
cpp cryptography decryption encryption gmp rsa
Last synced: 14 May 2025
https://github.com/shgysk8zer0/jscrypt
Cryptographic modules implemented in JavaScript (I.E. SubtleCrypto API)
aes aes256 crypto cryptography ecmascript2015 es6 es6-modules javascript jscrypt jwk nodejs npm phpcrypt rsa spki subtlecrypto subtlecrypto-api webcryptoapi
Last synced: 08 May 2026
https://github.com/openzebra/argon2.pure.js
A pure TypeScript/JavaScript implementation of the Argon2
argon2 argon2id cryptography hash hashing password-hash
Last synced: 07 Mar 2026
https://github.com/gcarreno/go-randomx
A Go wrapper of RandomX
consensus consensus-algorithm cryptocurrencies cryptocurrency cryptography go golang pow proof-of-work randomx
Last synced: 09 Jul 2025
https://github.com/ramesht007/shamir_secret_sharing
Implementing Shamir's Secret Sharing in Python
Last synced: 04 Jul 2026
https://github.com/agucova/oxcrypt
A fast, memory-safe Cryptomator client written in Rust.
cryptography cryptomator filesystem fuse rust vault
Last synced: 15 May 2026
https://github.com/gianlucatruda/nis-encrypted-messaging
A demonstration of security principles for peer-to-peer communications of sensitive content.
aes-encryption cryptography messaging python3 rsa-cryptography security
Last synced: 03 Apr 2025
https://github.com/abennett/cryptlog
A proof of concept for an AES-CBC-based, limited-read log appender.
Last synced: 03 Apr 2025
https://github.com/clats97/clatsguard
Secure your documents with this Python AES-256-GCM file encryptor featuring PBKDF2-HMAC key derivation, passphrase-based or hex key usage, and a Tkinter GUI for user-friendly encryption. Open-sourced. This project was peer reviewed by a CompTIA Security+ person.
aes256 aes256-gcm cryptography encryption encryption-decryption file-encryption python security trending
Last synced: 03 Apr 2025
https://github.com/razenpok/razensoft.xxtea
A simple and fast zero-dependency cryptography cypher for Unity
cryptography csharp cypher unity unity3d xxtea
Last synced: 15 May 2026
https://github.com/john-lin/crypt
A simple CLI tool for Encrypt/Decrypt files.
Last synced: 18 May 2026
https://github.com/gcarreno/go-randomhash
A Go implementation of RandomHash
consensus consensus-algorithm cryptocurrencies cryptocurrency cryptography go golang pow proof-of-work random-hash randomhash
Last synced: 09 Jul 2025
https://github.com/nikhil25803/pyfidelius
Python SDK for Fidelius CLI, a tool designed for ECDH cryptography.
Last synced: 20 Jan 2026
https://github.com/priyakdey/sigil
Sigil is a minimal-dependency, lightweight and modular cryptographic library in Java, for working with JSON Object Signing and Encryption (JOSE) family of standards. It supports secure signing, encryption, key handling and encoding/decoding of JWT, JWS, JWE components.
cryptography java jose jwa jwe jwk jws jwt
Last synced: 23 Jun 2025
https://github.com/ashutoshvarma/cryptopals
Challenges from https://cryptopals.com/
aes cryptography cryptopals rust
Last synced: 23 Jul 2025
https://github.com/ahmedemad242/secure-shared-file-storage
Project aims to create a secure platform for file sharing using File Transfer Protocol (FTP) and hybrid cryptography. The project involves building an FTP server and client application in Python, as well as implementing multiple cipher encryption to protect the transferred files
cryptography encryption ftp python
Last synced: 04 Apr 2025
https://github.com/dolutech/cryptnote-php
A PHP library for creating encrypted, self-destructing messages with view limits and optional password protection
aes-256 cryptography encryption one-time-secret password-protection php-library secure-notes security self-destructing-messages sqlite
Last synced: 17 Jan 2026
https://github.com/virtualox/get-randomhex
Adjustable Random Hex String Generator.
cryptography function hex hexadecimal powershell powershell-scripting powershell-scripts random-key-generator rngcryptoserviceprovider
Last synced: 08 Apr 2026
https://github.com/isakruas/ecdp
The Elliptic Curve Data Protocol (ECDP) is a P2P communication protocol for decentralized networks, utilizing elliptic curve cryptography (ECC) for encryption, ECDSA for message authentication, and Diffie-Hellman key exchange for secure sessions. It operates over TCP and UDP.
cryptography data-security decentralized-networks diffie-hellman-key-exchange ecdsa elliptic-curve-cryptography encryption message-authentication peer-to-peer protocol secure-communication session-initialization tcp udp
Last synced: 06 May 2025
https://github.com/bkawk/bit-flip
Polymer1 Web Component for generating a random hexadecimal or binary string, of a specified length.
bitcoin crypto cryptography polymer webcomponents
Last synced: 15 May 2026
https://github.com/daim-nickel-penny/elixir
BlockChain based simple DAPP
blockchain-technology cryptography javascript
Last synced: 18 Jul 2025
https://github.com/onlyf0ur/c-hashcracker
A simple and hyperfast HashCracker written in C.
Last synced: 17 Mar 2025
https://github.com/azeemmirza/fortuna
Fortuna is a PRNG; it generates cryptographically secure pseudorandom numbers on a computer. It can also be used as a real random number generator, accepting random inputs from analog random sources. Designed by Niels Ferguson and Bruce Schneier.
cryptography psuedo-random random-number-generators
Last synced: 19 Mar 2026
https://github.com/samdney/research-sites
List of useful websites for math, algebra, number theory, cryptography, online security and privacy research.
algebra archive computer-science cryptography help latex list math mathematics maths number-theory reprint research tools webiste
Last synced: 22 May 2026
https://github.com/roydevashish/hybrid-technique-for-image-encryption
This project implements a hybrid image encryption technique by combining asymmetric and symmetric encryption methods. It utilizes the ECC for asymmetric encryption and ChaCha20 stream cipher for symmetric encryption to achieve robust and secure image protection.
asymmetric-cryptography chacha20 cryptography ecc elliptic-curves-cryptography encryption hybrid image image-encryption image-protection python3 stream-cipher symmetric-cryptography uv
Last synced: 13 Jun 2026
https://github.com/virgilsecurity/virgil-keyknox-kotlin
KeyKnox SDK allows developers to communicate with the Virgil Keyknox Service to upload, download, and synchronize encrypted sensitive data (private keys) between user's devices.
cryptography data-sharing keyknox sdk
Last synced: 23 Jul 2025
https://github.com/envoy-vc/nillion-tools
A developer-centric toolkit that simplifies building on the Nillion network.
components-react cryptography key-management nilion-nada nillion npm-package toolkit
Last synced: 30 Oct 2025
https://github.com/developpeurpascal/idb-keys-generator
A simple generator of numbers lists or arrays in different programming languages.
cryptographic-algorithms cryptography cryptography-tools delphi delphi-app developer-tool developer-tools firemonkey firemonkey-applications
Last synced: 20 Jan 2026
https://github.com/varun-doshi/erasure-coding
Rust Implementation of Erasure Codes
Last synced: 29 Mar 2025
https://github.com/fpoirotte/cryptal-tomcrypt
An implementation of the Cryptography Abstraction Layer based on the tomcrypt PHP extension
cryptal crypto cryptography libtomcrypt php tomcrypt
Last synced: 03 Apr 2025
https://github.com/velipso/staticvault
Encrypt, host, and share files on a static website
browser-app cli-tool cryptography encryption file-encryption frontend javascript nodejs privacy secure-storage self-hosted static-site vault web-security zero-knowledge
Last synced: 22 Jul 2025
https://github.com/arthursudbrackibarra/t2-seguranca-de-sistemas
Trabalho 2 de Seguranรงa de Sistemas.
cryptography java rsa security
Last synced: 22 Mar 2025
https://github.com/lancejpollard/hash
Hashing Function Theory
cryptography group-theory hash-functions mathematics papers
Last synced: 03 Jul 2026
https://github.com/yazatamorph/pinkdf2
Gleam bindings to fast_pbkdf2 NIF for PBKDF2 (Password-Based Key Derivation Function 2) on Erlang.
Last synced: 10 Apr 2025
https://github.com/factomproject/java-identitykeys
Allows you to implement Factom identity keys in Java.
blockchain-technology cryptography digital-identity factom factom-blockchain public-key-cryptography
Last synced: 29 Jun 2026
https://github.com/botsuniverse/cryptrooper
Cryptrooper is a module that can encode and decode your text with a given key.
crypt cryptography decode encode python python3
Last synced: 29 Mar 2025
https://github.com/markus28/steganography
Steganography: Encrypt and hide any data in an image, video or audiofile
cryptography python steganography
Last synced: 18 Aug 2025
https://github.com/jordanwelsman/jutils
A Python package of useful tools and utilities.
averages calculators converters cryptography datastructures exceptions formatting language logic pipelining python sorters timers utilities
Last synced: 22 May 2026
https://github.com/verkush/lockboxpro
The LockBoxPro is an advanced software solution designed to facilitate the creation and evaluation of cryptographic algorithms.
cryptography electronjs generator
Last synced: 20 Jan 2026
https://github.com/ergl/sss
Basic Shamir's Secret Sharing
cryptography pony-language shamir shamir-secret-sharing
Last synced: 06 Feb 2026
https://github.com/minapecheux/medusa
A small encoding/decoding Python lib.
Last synced: 02 Nov 2025
https://github.com/zhongruoyu/aes
Advanced Encryption Standard (AES) in C with file encryption/decryption support.
Last synced: 23 Jul 2025
https://github.com/cryptimeleon/android-demo
An example project with instructions on how to use cryptimeleon on android.
android android-app cryptography mcl pairing
Last synced: 12 Jan 2026
https://github.com/CorvidLabs/ts-algochat
๐ TypeScript implementation of AlgoChat - Encrypted messaging on Algorand
algorand blockchain chacha20-poly1305 cryptography encryption messaging typescript x25519
Last synced: 08 Mar 2026
https://github.com/milan-sedivy/confidential_multi_vote_system
This project demonstrates principles of a protocol outlined in my master thesis. The protocol is a superset of the Practical Multi-Candidate Election System (Baudron et. al 2001). It focuses on allowing the user to vote for multiple choices and to have multiple votes (an example of a shareholder meeting is implemented here)
anonymity cryptography end-to-end-encryption homomorphic-encryption privacy voting-application
Last synced: 06 Dec 2025
https://github.com/deovaliandro/des
Simple implementation of Data Encryption Standard
Last synced: 13 Apr 2025
https://github.com/ecies/py-demo
A simple fastapi eciespy web backend demo
cryptography ecies fastapi python3 secp256k1 webdemo
Last synced: 12 Apr 2025
https://github.com/crodriguezvega/go-knapsackcrypto
Knapsack crypto systems in Go
crypto cryptography cryptography-library go golang knapsack-crypto knapsack-encryption merkle-hellman merkle-hellman-knapsack public-key-cryptography
Last synced: 12 Apr 2025
https://github.com/buabaj/fairness-engine
a simple secure multi-party computation server to ensure input data privacy while maintaining correctness and fairness using shamir's secret sharing protocol
cryptography golang mpc shamir-secret-sharing
Last synced: 12 Apr 2025
https://github.com/dk14/mega-peers
A p2p fact sharing network
cryptography oracle p2p p2p-exchange p2p-network trading wolfram
Last synced: 22 May 2026
https://github.com/divshekhar/decipher
Breaking transposition cipher using metaheuristic algorithms
cryptanalysis cryptography dpso-algorithm genetic-algorithm geneticalgorithm jaya-algorithm mpso-algorithm pso-algorithm transposition-cipher
Last synced: 02 Nov 2025
https://github.com/joshmcguigan/cryptopals
Rust implementation of the cryptopals crypto challenges
challenges challenges-solved cryptography cryptopals cryptopals-challenges cryptopals-crypto-challenges
Last synced: 02 Jul 2025
https://github.com/samuel-lucas6/daence.net
A .NET implementation of ChaCha-Daence.
aead chacha20 crypto cryptography daence hchacha20 poly1305 siv xchacha20
Last synced: 27 Mar 2025
https://github.com/tuokri/UnrealScript-FCrypto
Pure UnrealScript SSL/TLS implementation and cryptography utilities based on BearSSL. Work in progress.
bearssl block-cipher cryptography decryption ecdh ecdhe encryption hkdf hmac https-client sha-1 udk ue3 unreal-engine-3 unrealscript xxtea
Last synced: 11 Mar 2025
https://github.com/t1ltxz-gxd/vaultkey
vaultkey is an open-source Rust library for generating secure, customizable passwords. It supports various character sets and lengths, providing cryptographically secure random passwords for any use case. Contributions are welcome to improve and expand the library.
cryptography key-generation open-source password-generation password-manager random-password rust rust-crate rust-library secure-random security
Last synced: 21 Jun 2025
https://github.com/dhouib-mohamed/secure-network-authentication
Secure Network Authentication project focuses on establishing robust authentication and network services using OpenLDAP, SSH, Apache, OpenVPN, DNS, and Kerberos.
apache authentication cryptography dns infrastructure kerberos network-management network-security openldap openvpn ssh
Last synced: 18 May 2026
https://github.com/varun-doshi/modc
Rust Library for Finite Field Arithmetic
Last synced: 10 Jun 2026
https://github.com/intricate/paseto-haskell
A Haskell implementation of PASETO (Platform-Agnostic Security Tokens).
cryptography haskell jwt paseto security token
Last synced: 10 Apr 2025
https://github.com/iwas-coder/cryrsa
RSA key creator, extractor and compute tool. Useful to process keys with small modulus and try to factorize them.
asymmetric-cryptography cryptography private-key-cryptography public-key-cryptography rsa
Last synced: 20 Jul 2025
https://github.com/liblor/applied_cryptography_ethz
Applied Cryptography Lab @ ETHZ
applied-cryptography cryptography ethz lab
Last synced: 12 Jun 2025
https://github.com/hsbc/encryption-helper-python
A Python CLI application for generating RSA public and private key pairs.
automation cryptography data-protection devops-tools encryption hsbc key-generation key-management open-source poetry-python public-key python python-rsa python-rsa-key-pairs-public-key-private-key rsa security
Last synced: 14 Jul 2025
https://github.com/erhant/enigma-machine
An Enigma Machine in TypeScript.
cryptography enigma-machine typescript
Last synced: 04 Jun 2026
https://github.com/radlikewhoa/supernatural
Substitution Permutation Network exercise for the Cryptography and Security module (krysi) at the FHNW.
Last synced: 26 Jun 2025