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: 2026-06-23 00:06:53 UTC
- JSON Representation
https://github.com/hemanthh17/da2-cryptography-vit
Blum Blum Shub and RC4 Python Scripts. Blum Blum Shub is a PRF which is responsible to generate random numbers. RC4 is a stream cipher encryption algorithm.
cryptography python3 random-number-generators stream-cipher
Last synced: 15 Mar 2025
https://github.com/trinetra110/stegoaes
A Python-based steganography tool that hides AES-encrypted messages in images using the Least Significant Bit (LSB) technique. Supports secure encoding and decoding with OpenCV and PyCryptodome.
Last synced: 01 Sep 2025
https://github.com/kyrylr/distributedlab
Solutions to the exercises of the Distributed Lab
Last synced: 07 Apr 2025
https://github.com/rayniel95/ecdsa-node
My solution to week 1 project of Alchemy University.
alchemy-university blockchain cryptography docker express nextjs react reactjs web3
Last synced: 11 Apr 2026
https://github.com/farfarfun/funsecret
加密和安全工具包 - 提供加密、解密和安全相关功能
cryptography encryption farfarfun python secret security
Last synced: 05 Mar 2026
https://github.com/ikcede/js-one-time-pad
A simple one-time pad class built in Javascript
crypto cryptography javascript
Last synced: 29 May 2026
https://github.com/paolino/keri-lean
Lean 4 formalization of KERI protocol invariants
cryptography formal-verification keri lean4 theorem-proving
Last synced: 05 Mar 2026
https://github.com/rmnblm/papers
📄 Published papers.
blockchain cryptography distributed-systems paper science-research
Last synced: 04 Jan 2026
https://github.com/danielost/sp-box
S-box/p-box implementation
block-ciphers cryptography p-box s-box
Last synced: 12 Jul 2025
https://github.com/moosesue/gcd
Standard GCD algorithm in Python and Rust
cryptography cryptography-algorithms gcd number-theory python rust rust-lang
Last synced: 30 Apr 2026
https://github.com/vobst/ctf-hireme
Solution for NERD's HireMe.c challenge.
cryptography ctf-writeups interview-questions nintendo reverse-engineering
Last synced: 30 Jun 2025
https://github.com/oanderoficial/bitcoin-cli-script
Ferramenta em C, que é um utilitário para o bitcoin-cli. Com o Bitcoin-cli Script você terá mais agilidade em obter informações da blockchain utilizando o seu node.
bitcoin bitcoin-cli blockchain blockchain-technology cryptography linux node
Last synced: 17 Apr 2026
https://github.com/tnmyk/localblockchain
Centralized and local imitation of blockchain technology using Javascript.
blockchain cryptography javascript
Last synced: 26 May 2026
https://github.com/hvalfangst/rsa
RSA made from scratch using the underlying mathematical concepts for sake of demonstration
cryptography github-actions python rsa
Last synced: 17 Apr 2026
https://github.com/akagi1/online-bcrypt-generator
Yet another online bcrypt generator.
bcrypt cryptography encryption generator javascript webpack
Last synced: 17 Apr 2026
https://github.com/vasilievsv/hw.pki-on-box
Educational PKI server on Radxa Zero (Linux) + STM32H750 TRNG via USB HID. SELinux + eBPF isolation. Python daemon. ISO 26262 ASIL A (educational).
buildroot cryptography ebpf embedded-linux iso26262 pki radxa selinux-policy-lang stm32 trng
Last synced: 12 Apr 2026
https://github.com/primefactor-io/lhtlp
Implementation of the Linearly-Homomorphic Time-Lock Puzzle scheme
cryptography cryptography-algorithms homomorphic-cryptography-scheme homomorphic-encryption homomorphic-encryption-library time-lock time-lock-puzzle
Last synced: 15 May 2025
https://github.com/albovo/ctf-writeups
Here you can find some of the writeups of the ctfs I've played so far.
cryptography ctf-writeups network-security pwn python reverse-engineering scripting web-security
Last synced: 17 Apr 2026
https://github.com/pmuens/cryptolab
R&D environment to study Cryptography so we can roll our own eventually
cryptography cryptography-algorithms ecdh ecdsa elliptic-curve-cryptography elliptic-curves learning-with-errors post-quantum-cryptography
Last synced: 15 May 2025
https://github.com/andrewrgarcia/aesus
Word-based AES-256 encryption tool in Rust — for secrets too stylish for gibberish.
aes aes256 cli cryptography encryption passphrase privacy rust security tools
Last synced: 20 Jan 2026
https://github.com/ocdbytes/secp256k1_bitcoin
This is the cryptography algorithm used in bitcoin to generate public and private keys. Bitcoin uses SECP256k1 C-language library to use this encryption in the Bitcoin operating system.
bitcoin cryptography rsa-cryptography secp256k1
Last synced: 18 Apr 2026
https://github.com/stzyium/saltforge
A simple Python password security system using cryptographic concepts like salting, hashing, and PBKDF2.
cryptography hashing hashlib password-security python python-project salting sha256 sha256-hash
Last synced: 24 Oct 2025
https://github.com/copyleftdev/seccure-edi
Post-quantum encryption for EDI files. Kyber-1024 + XChaCha20-Poly1305.
cli cryptography edi encryption kyber post-quantum rust security
Last synced: 13 Jan 2026
https://github.com/omarbazaraa/security_des_mac
Implementation of DES and MAC algorithms.
authentication cryptography decryption des-cipher encryption mac security
Last synced: 10 May 2026
https://github.com/maemresen/encrypted-data-sender
An example project that simulates, sending and receiving encrypted data between two end-point.
cryptography encryption java security
Last synced: 10 May 2026
https://github.com/rub-nds/ssh-client-signatures-artifacts
Artifacts for the paper "On the Security of SSH Client Signatures", accepted at the ACM Conference on Computer and Communications Security (CCS) 2025.
cryptography cve-2024-31497 github gitlab launchpad measurement public-keys ssh ssh-client
Last synced: 11 May 2026
https://github.com/UofSC-Fall-2022-Math-587-001/homework8
A bit about distribution of primes and Pollard's p-1 test
cryptography go latex math pollard-p-1 prime-numbers
Last synced: 07 May 2025
https://github.com/randika00/aes-encryption-decryption
Encryption and Decryption using AES (Advanced Encryption Standards)
aes aes-encryption cryptography decryption encryption
Last synced: 20 Apr 2026
https://github.com/virgilsecurity/demo-e2ee-android
A simple Android application that demonstrates how the end-to-end encryption (E2EE) works.
android cryptography demo demo-app encryption end-to-end-encryption key-management public-key-cryptography
Last synced: 21 Apr 2026
https://github.com/bch-team-pro/bch-wallet
Bitcoin Cash (BCH) – securely send, receive, and store BCH with full control over your private keys. Works on Windows, Linux, and macOS, with support for hardware wallets, QR codes, and transaction tracking. No registration required—ideal for desktop-focused users.
bch bch-coin bch-electrum-wallet bch-wallet bitcoin-cash bitcoin-wallet crypto crypto-wallet cryptography electrum electrum-bitcoin-cash electrum-cash electum-bch non-custodial web3
Last synced: 21 Apr 2026
https://github.com/kodzonko/sdex-enrypted-communicator
Mobilna aplikacja webowa komunikatora szyfrującego wiadomości metodą SDEx z funkcją skrótu BLAKE3.
blake3 cryptography sdex secure-communication secure-messaging secure-messenger
Last synced: 15 May 2025
https://github.com/separatrixxx/crypto_labs_6_sem
👓 Laboratory work for the 6th semester of MAI on cryptography
cryptography matplotlib numpy python
Last synced: 21 Apr 2026
https://github.com/umstek/classiccryptolib
Classical Cryptography in Modern Code
cipher cryptography encryption
Last synced: 22 Apr 2026
https://github.com/nullisxyz/keycard
Blazing-fast Keycard SDK and CLI in Rust
cryptography ethereum keycard rust smartcard
Last synced: 15 May 2025
https://github.com/rr-cmd/des_algorithm
Simple Java project for encrypting and decrypting using DES cryptography algorithm
cryptography dataencryptionstandards java
Last synced: 22 Aug 2025
https://github.com/telkomdev/pycrypsi
Python custom crypto utility that wraps the pycryptodome module to make life easier (Digest, Cipher, HMAC, RSA, RSA Digital Signature)
cryptography hash python rsa telkomdev
Last synced: 05 Jun 2026
https://github.com/uofsc-fall-2022-math-587-001/homework5
Diffie-Hellman key exchange and ElGamal cryptosystem. Plus Shanks' algorithm for solving the discrete logarithm problem.
cryptography discrete-logarithm go latex math
Last synced: 12 May 2026
https://github.com/paulshpilsher/ethereum-cryptography
Ethereum Cryptography
blockchain cryptography ethereum web3
Last synced: 23 Apr 2026
https://github.com/teawithsand/crypka
Crypka makes writting apps that use cryptography easier
crypto cryptography encryption encryption-decryption-library
Last synced: 23 Apr 2026
https://github.com/soenneker/soenneker.cryptography.ed25519
A lightweight C# library providing utilities for verifying Ed25519 digital signatures using public keys
cryptography csharp dotnet ed25519 ed25519util signing util verification verify
Last synced: 24 Apr 2026
https://github.com/thesupercd/rainbow_table_builder
A high performance CUDA-based GPU accelerated Rainbow-Table maker, written in C++ without any external libraries or dependencies needed.
cpp cryptography cuda hash-table hashing parallel-processing rainbow-table sha3 sha3-512 uuid
Last synced: 12 May 2026
https://github.com/loneicewolf/py-snippets
Useful snippets in Python3 (mainly Jupyter)
cipher ciphers cryptography decryption encryption python3 snippets
Last synced: 15 May 2025
https://github.com/ashu11-a/ashcrypt
Files protected with encryption
aes aes-256 aes-cipher aes-encryption aes-gcm asynchronous-crypto buffer crypto crypto-library crypto-tools cryptography encryption gcm node-aes node-crypto nodejs pbkdf2 stream-encryption typescript
Last synced: 24 Apr 2026
https://github.com/redx94/quantumblockchainautomation
A revolutionary initiative combining Quantum Computing and Blockchain Technology to establish a secure, decentralized system for quantum-powered data integrity. This project pioneers the fusion of advanced quantum randomness with blockchain's immutability, ensuring unmatched reliability and security for distributed data processes
blockchain blockchain-immutability cryptography data-integrity decentralization distributed-systems ethereum flask-dashboard ganache ibm-quantum-experience qiskit quantum quantum-blockchain-fusion quantum-randomness quantum-security quatum-cryptography smart-contracts zeromq
Last synced: 24 Apr 2026
https://github.com/arec1b0/blockchain-on-java
A Java-based blockchain implementation featuring Proof of Work (PoW) and Proof of Stake (PoS) consensus mechanisms.
blockchain cryptography decentralized java proof-of-stake proof-of-work
Last synced: 04 Apr 2025
https://github.com/swamikannan/revisiting-python
Building projects based on libraries such as Turtle and tkinter to brush up on non-ML skills
coffee-machine cryptography customtkinter etch-a-sketch password password-manager-app password-manager-ui python3 tkinter-gui tkinter-python turtle
Last synced: 06 Jun 2026
https://github.com/jurshsmith/vaultstream
High-Performance Distributed Digital Signature System
cryptography ecdsa-key-pair golang jetstream nats-streaming postgresql
Last synced: 25 Apr 2026
https://github.com/samarjit98/security-lab
Some popular cryptographic algorithms.
c cpp cryptography des-encryption encryption-decryption gmp number-theory
Last synced: 25 Apr 2026
https://github.com/toxic-whitelgnd/matrice_cryptography
A simple math Project based on Matrices-Cryptography by using python-numpy
cryptography math-problem matrices numpy python3
Last synced: 25 Apr 2026
https://github.com/domamaric/srs
Python solutions for laboratory exercises for Computer Security course at FER.
cryptography cryptography-algorithms password-manager passwords
Last synced: 11 Jun 2026
https://github.com/hemantksingh/blockchain
A simple blockchain that doesn't use proof-of-work
Last synced: 30 Mar 2025
https://github.com/tykoth/cryptopsy
Encryption/Decryption tests.
command-line cryptography cryptojs testing
Last synced: 26 Apr 2026
https://github.com/sami-bre/cryptosystems
A small command line tool that can encrypt and decrypt text with 3 different algorithms: the affine, transposition and RSA ciphers.
affine-cipher cryptography rsa-encryption transposition-cipher
Last synced: 28 Mar 2025
https://github.com/pikulet/encryption-oracle-padding-oracle
padding oracle attack, encryption oracle
cryptography padding-oracle-attacks pkcs
Last synced: 04 Oct 2025
https://github.com/jchambers/java-noise
A Java implementation of the Noise Protocol Framework
cryptography java noise noise-protocol noise-protocol-framework security
Last synced: 26 Apr 2026
https://github.com/0xm4rk1h/human-collapse
A Minecraft modpack focused on technology and automation, with the goal of uncovering the truth. Obtaining the “Tome of Knowledge” grants you a book containing clues to discover that truth, and you will need to use cryptography and steganography to achieve it.
cryptography minecraft modpack steganography
Last synced: 07 Jun 2026
https://github.com/uofsc-fall-2022-math-587-001/homework12
Elliptic curve cryptography
cryptography ecdsa elliptic-curve-cryptography elliptic-curve-diffie-hellman elliptic-curve-elgamal go latex math
Last synced: 09 May 2026
https://github.com/161chihuahuas/equihash
⛏️ native equihash solver and verifier
client-puzzle cryptocurrency cryptography equihash khovratovich nodejs proof-of-work zcash
Last synced: 27 Apr 2026
https://github.com/l0g0rhythm/cryptoolsec
Secure Python CLI & GUI tool for efficient file/stream encryption & decryption (AES-256-GCM, streaming I/O). Supports passwords (Argon2id+Salt) or key files. Built for security and automation
aes aes-256 aes-gcm argon2 argon2id authenticated-encryption cli cross-platform cryptography decryption encryption file-encryption gui kdf pyside6 python python3 qt6 security streaming
Last synced: 27 Apr 2026
https://github.com/cluena/password-manager
cryptography password-manager python
Last synced: 07 Jun 2026
https://github.com/davidalgis/filescrypter
Simple python tool for encrypting and decrypting files. For more secure information sharing/storage.
aes cryptography encryption-decryption python
Last synced: 28 Apr 2026
https://github.com/televisionninja/caesar-cipher
Simple caesar cipher encrypting, decrypting, and brute forcing functions
brute-force caesar-cipher cryptography
Last synced: 28 Apr 2026
https://github.com/zacharytamas/rsa-server
A simple Node.js server for storing and verifying public keys.
Last synced: 28 Apr 2026
https://github.com/thenareshofficial/file-encryptions
File encryption and decryption Tool in python
algorithm cmd command-line-tool cryptography cybersecurity-tool decryption docker docker-image encryption file-encryption-python github hashing pip python python-decrypt python-docker python-encryption python3 requirements tool
Last synced: 28 Apr 2026
https://github.com/below/cgjprofilelib
The cgjprofile Library
cryptography provisioning-profiles swift swift-package-manager
Last synced: 28 Apr 2026
https://github.com/gbennnn/stegcrypt
StegCrypt is a lightweight steganography tool for securely embedding and extracting hidden messages within digital images.
cryptography decryption encription flask image-encryption python secret steganography
Last synced: 28 Apr 2026
https://github.com/cepdnaclk/e16-4yp-implementation-of-lightweight-cryptographic-algorithms
This project aims to implement and analyse NIST Lightweight cryptography competition finalist algorithms. Lightweight cryptographic algorithms are designed to be run on resource-constrained IoT devices.
computer-security cryptography iot
Last synced: 14 May 2026
https://github.com/lukechilds/og-zkp
Prove your Bitcoin OG status in zero-knowledge
bitcoin cryptography risc-zero risc0 risc0-zkvm zero-knowledge zkp
Last synced: 08 Jun 2026
https://github.com/solidiquis/ether
Symmetric key encryption command-line utility.
command-line command-line-tool cryptography rust
Last synced: 28 May 2026
https://github.com/joaoiacillo/vault-guard
A script utility for encrypting and decrypting Obsidian vaults.
cryptography gpg obsidian pgp security
Last synced: 29 Apr 2026
https://github.com/kozlm/lyra2
Lyra2 password hashing algorithm implementation in Java
cryptography java junit lyra2 maven password-hashing phs
Last synced: 29 Apr 2026
https://github.com/edycutjong/silo
🛡️ Zero-knowledge whistleblower drop shielding source identity inside secure enclaves.
cryptography express intel-tdx nextjs privacy tee verifiable-credentials whistleblower
Last synced: 21 Jun 2026
https://github.com/avivijay19/hash-generator
Hash generator is a crypto based android application which works on different hashing algorithms.
android cryptography kotlin kotlin-android
Last synced: 29 Apr 2026
https://github.com/rbourgeat/ft_ssl_md5
You will recode part of the OpenSSL program, specifically the MD5 Hashing Algorithm.
42born2code 42cursus 42paris 42projects 42school cryptography ssl
Last synced: 23 Jun 2026
https://github.com/tarranprior/postbox
📫 Postbox is a lightweight encryption tool which allows users to generate key pairs, exchange public keys, encrypt and decrypt messages, and communicate securely over SMTP using RSA. Built with C#.
console cryptography csharp dotnet encryption smtp
Last synced: 30 Apr 2026
https://github.com/pavan-m060/capstone_project
🔐 Encryption & Decryption Web App A simple Flask-based web application that implements Caesar and Transposition ciphers for secure text encryption and decryption. Includes file handling support and a user-friendly local HTML interface for seamless interaction.
ceaser-cipher cryptography decryption encryption filehandling flask python transposition-cipher webapplication
Last synced: 30 Apr 2026
https://github.com/c14it0n/torgeforge
🔥 Generador de alto rendimiento de direcciones .onion v3 personalizadas para Tor con interfaz interactiva
cli-tool cryptography ed25519 hidden-service onion privacy rust security tor vanity-address
Last synced: 13 Jun 2026
https://github.com/ar-io/ar-io-mlflow
MLflow plugin for verifiable ML provenance, anchored to ar.io
ar-io arweave cryptography mlflow mlops provenance verification
Last synced: 13 Jun 2026
https://github.com/aulanchik/decryptor
Code Cipher challenge
axios cryptography javascript nodejs
Last synced: 30 Apr 2026
https://github.com/autodidaddict/nkeys-hs
Haskell library for encoding and decoding ed25519 keys for the NATS ecosystem
cryptography ed25519 nats nkeys
Last synced: 14 Jun 2026
https://github.com/suprim-corp/kit-backend-base-java
Reusable Java backend toolkit — UUID, JSON, crypto, exception, web & gRPC (dev.suprim)
backend cryptography exception-handling grpc java java-library json maven spring-boot utilities
Last synced: 24 Jun 2026
https://github.com/jose-compu/vdf-rs
An implementation of Verifiable Delay Functions in Rust
crypto cryptography cryptography-library rs rust vdf verifiable-delay-functions
Last synced: 16 Jun 2026
https://github.com/alle-bartoli/enigmatik
Secure password generator
cryptography enigma localhost password password-generator rust rustlang terminal terminal-app terminal-based
Last synced: 02 May 2026
https://github.com/rezameerr/ecc-framework
Elliptic Curve Cryptography (ECC) Framework, ECC, ECDH(E), ECDSA, EC ElGamal, ECIES, HMAC
argon2 blake2 cryptocurrency cryptography digest digital-signature ecc ecdh ecdhe ecdsa ecies elgamal elliptic-curve-cryptography elliptic-curves hmac kdf key-agreement keypair-generator symmetric-encryption twofish
Last synced: 17 Oct 2025
https://github.com/nakedmcse/tscryptopals
TS Implementation of Cryptopals challenges
Last synced: 02 May 2026
https://github.com/jadsongmatos/cryptopals
attacks challenges ciphers cryptography decryption encryption hashes security
Last synced: 11 May 2026
https://github.com/mokkunsuzuki-code/stage355
Stage355: Signature Key Status Verification and Revocation Enforcement Layer with signing-time validity checks, Stage354 ledger binding, fail-closed revoked-key rejection, and PQC intent-only protection.
audit cryptography cybersecurity ed25519 evidence fail-closed gpg key-revocation key-rotation key-status ledger ml-dsa pqc qsp signature-verification sigstore supply-chain-security transparency trust verification
Last synced: 23 Jun 2026
https://github.com/ilovenooodles/classic-crypto
Web based Classic cryptography
Last synced: 02 May 2026
https://github.com/hexylena/poem-code
"The poem code is a simple, and insecure, cryptographic method which was used during World War II by the British Special Operations Executive (SOE) to communicate with their agents in Nazi-occupied Europe." - Wikipedia
cryptography historical-cipher
Last synced: 22 Aug 2025
https://github.com/gauravg-20/elliptics
cryptography encryption-algorithms encryption-decryption
Last synced: 14 Aug 2025
https://github.com/ralvarezdev/go-crypto
TOTP, bcrypt and rand functions for Golang projects
bcrypt cryptography go go-bcrypt go-cryptography go-jwt-authentication go-lib go-library go-package go-rand golang
Last synced: 17 Jun 2026
https://github.com/simonbetton/easydoge-km
Production-ready Dogecoin key-management SDK for Rust, Swift, Kotlin, Expo, and CLI/TUI.
cryptography dogecoin expo kotlin react-native rust swift wallet
Last synced: 09 Jun 2026
https://github.com/robertoaleman/ra-ultimate-cipher-analyzer
RA Ultimate Cipher Analyzer is a web-based tool designed to analyze encrypted files and suggest the encryption algorithm used based on statistical properties and known patterns.
aes aes-128 aes-256 aes-encryption algorithms code-analysis cryptography cypher rsa rsa-cryptography rsa-decryption rsa-encryption
Last synced: 18 Feb 2026
