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/clats97/vigenerecracker
A simple python script that will crack the classical implementation of the Vigenere Cipher. It uses a word-list to brute force the correct key and NLTK to identify English words / sentences.
cipher cipher-algorithms ciphers cracking cryptography vigenere vigenere-cipher vigenere-cipher-algorithm
Last synced: 26 Oct 2025
https://github.com/lorransutter/intro-bc-security-practices
Labs for BCDV1002 - Intro to Blockchain - Security Practices
blockchain cryptography ethersjs security security-practices smart-contracts solidity
Last synced: 02 Apr 2026
https://github.com/enkore/zignify
Re-implementation of OpenBSD signify(1) in Zig (first code in Zig)
crypto cryptography signify zig
Last synced: 25 Mar 2025
https://github.com/mauricelambert/customcrypto
This package implements tools to build your custom cipher
cipher cryptography encryption pypi-package python3
Last synced: 04 Jul 2025
https://github.com/seigr-lab/seigrtoolsetcrypto
Post-classical cryptographic engine with entropy-regenerative architecture
alpha cryptographic-algorithms cryptography data-security encryption entropy hashing libraryb privacy python python3 research security seigr self-sovereign
Last synced: 07 Jun 2026
https://github.com/filiprokita/tosha256
This is a Python script that prompts the user to enter a string of text and then calculates its SHA-256 hash using the hashlib library. The resulting hash is then printed to the console.
cryptography data-integrity hash hashing python security sha256 tosha
Last synced: 24 Mar 2025
https://github.com/zukardex/zeryto
Zeryto- an amateur cryptosystem experiment
Last synced: 28 Oct 2025
https://github.com/latticearc/latticearc
Hybrid Post-Quantum Cryptography Library for Rust - Secure transition to Quantum-Safe Encryption.
aws-lc aws-lc-rs cryptography encryption fips hybrid-encryption ml-dsa ml-kem post-quantum post-quantum-cryptography pqc rust tls tls13
Last synced: 27 May 2026
https://github.com/csharper63/client_encryption_file_system
This repository contains a client that interacts with a server API to create account, upload/share files and folders with other users with E2EE.
authentication cryptography drive end-to-end-encryption
Last synced: 06 Feb 2026
https://github.com/basedwon/crpdo
A unified cryptographic library integrating diverse modules to provide robust and versatile cryptographic solutions for Node.js and the browser.
cryptography encryption hashing tweetnacl
Last synced: 29 Aug 2025
https://github.com/yermakovsa/erc6492-go
Go library for Ethereum signature verification with EOA, EIP-1271, and ERC-6492 support.
cryptography eip-1271 erc-6492 ethereum go go-ethereum golang signatures wallets web3
Last synced: 01 Jun 2026
https://github.com/hazae41/sha1
SHA-1 adapter for WebAssembly and JS implementations
browser cryptography hashing javascript noble sha1 typescript webassembly
Last synced: 16 Mar 2026
https://github.com/xm0onh/stateviz.dev
Interactive visualization playground for blockchain data structures. Learn how blockchains organize and store data through hands-on exploration and visual experimentation.
algorithms blockchain cryptography data-structures educational ethereum merkle-trie playground
Last synced: 12 Apr 2026
https://github.com/omarbazaraa/security_rsa
Implementation of the RSA algorithm.
algorithms cryptography decryption encryption number-theory rsa-cryptography security
Last synced: 04 Sep 2025
https://github.com/eroydev/bip39-rusty
Rust library for BIP-39 mnemonic system
bip39 bitcoin cryptocurrency cryptography rust
Last synced: 22 Feb 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/abhishekjain12/string-cryptography-method-1
Key Method using JAVA
Last synced: 23 Mar 2025
https://github.com/potreic/write-up-tpw-ctf-2024
CTF walkthrough solutions: web exploits (XXE Injection), binary overflows, cracking ciphers, and detecting in digital forensics. Break challenges & cat data.txt | grep flags! 🎯
binary-exploitation capture-the-flag cryptography cybersecurity digital-forensics web-exploitation
Last synced: 06 Feb 2026
https://github.com/kseen715/double-ratchet
Implementation of Double Ratchet encryption algorithm
cryptography double-ratchet encryption
Last synced: 30 Jan 2026
https://github.com/rmnblm/papers
📄 Published papers.
blockchain cryptography distributed-systems paper science-research
Last synced: 04 Jan 2026
https://github.com/selvam-18/riverside-hospitals
Final Sem project in the field of Cyber Security
aes-256 cryptography ejs javascript medical-field npm rsa
Last synced: 06 May 2026
https://github.com/aditya-giri/cryptopals
My solutions to the Matasano Challenges in Cryptography.
cryptography cryptopals matasano matasano-cryptopals-challenges
Last synced: 19 Sep 2025
https://github.com/dheurtev/cryptopyutils
A high-level Python3 cryptography library using cryptography
administration cryptography development python python-3 python3
Last synced: 23 Apr 2025
https://github.com/luqastw/passtw
passtw is a Python-based random password generator + encrypted local vault, using AES‑128 encryption and a cryptographic key.
cli cryptography password password-generator python security security-tools terminal
Last synced: 17 Mar 2026
https://github.com/yehezkiel1086/crypto-docs
Everything about Cryptography mainly written in Python and Shell scripts
bash cryptography ctf python3 security shell
Last synced: 15 Apr 2026
https://github.com/nickylogan/kryptograf
A POC of encryption algorithms
cryptography javascript reactjs
Last synced: 07 May 2026
https://github.com/zhongruoyu/sha2
An implementation of the SHA-2 hash algorithms.
cryptography hash sha256 sha512
Last synced: 18 Jun 2026
https://github.com/ianacaburian/generate-key-file
Ports juce_KeyGeneration::generateKeyFile() to node.
auth cmake cpp20 cryptography juce keyfile nodejs npm rsa typescript
Last synced: 15 Mar 2025
https://github.com/piotrpsz/crypto
Implementation of encryption algorithms in c++17
3-way blowfish cpp17 cryptography gost
Last synced: 17 May 2025
https://github.com/abd-mohsen/iss-project
final project for "Information security systems" course
cryptography encryption-decryption information-security
Last synced: 16 Mar 2025
https://github.com/aws/amazon-s3-encryption-client-python
Client-side encryption for S3 using the boto3 SDK
aws aws-s3 boto3 client-side-encryption cryptography s3
Last synced: 29 May 2026
https://github.com/zeraphie/passwordgen
Simple class for cryptographically strong secure password generation
composer cryptographic cryptography javascript keyspace password password-generator passwordgen php
Last synced: 06 May 2026
https://github.com/sug0/bbs-accum
Rust implementation of the accumulator commitment scheme described in https://eprint.iacr.org/2025/2081
accumulator commitment-schemes cryptography rust
Last synced: 01 Jun 2026
https://github.com/atticusrussell/hwsw-crypto-xilinx-template
Template for using Xilinx Vivado and SDK with CMPE-661 (HWSW Crypto) projects in a version control friendly way.
cmpe661 cryptography hwsw-crypto version-control vivado xilinx xilinx-sdk xilinx-vivado zybo
Last synced: 07 Feb 2026
https://github.com/m-torhan/securechat
Secure chat using double ratchet algorithm.
Last synced: 25 Feb 2026
https://github.com/giatraskon/overthewire-wargames-solutions
Solutions for OverTheWire wargames, each wargame has its own directory containing Bash scripts for each level's commands.
bash-scripting binary-exploitation capture-the-flag cryptography cybersecurity ethical-hacking overthewire overthewire-bandit overthewire-behemoth overthewire-krypton overthewire-leviathan overthewire-maze overthewire-narnia overthewire-natas overthewire-solution overthewire-utumno penetration-testing security-challenges wargames web-security
Last synced: 31 Mar 2025
https://github.com/viral32111/scrambler
A program to hide & protect messages for enhanced privacy.
c cipher cryptography encryption
Last synced: 09 Apr 2025
https://github.com/ankit-chaubey/ciph
Fast, streaming file encryption for large media files and cloud uploads using modern cryptography.
aes chacha20 cloud-security cryptography encryption-decryption file-encryption
Last synced: 07 Feb 2026
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/kyrylr/distributedlab
Solutions to the exercises of the Distributed Lab
Last synced: 07 Apr 2025
https://github.com/archethic-foundation/bls_ex
archethic bls cryptography elixir
Last synced: 20 Jan 2026
https://github.com/ia/crypto
crypto means cryptography
base64 challenges cryptography perl xor
Last synced: 11 Feb 2026
https://github.com/tchello45/nimbus-encryption
An e2ee toolkit for the web in early stage development
Last synced: 08 May 2026
https://github.com/systemslibrarian/crypto-lab-shor
Browser-based Shor's algorithm simulation — modular exponentiation period finding, QFT probability distribution, continued fractions, factor extraction. The reason RSA, ECC, and Diffie-Hellman need replacing. No backends. No simulated shortcuts — the number theory is real.
browser-demo crypto-lab cryptography integer-factorization period-finding post-quantum quantum-computing quantum-fourier-transform rsa shors-algorithm
Last synced: 01 Jun 2026
https://github.com/samuel-lucas6/hkdf.net
A .NET implementation of HKDF, with support for SHA256, SHA384, and SHA512.
cryptography hash hkdf hmac hmac-sha256 hmac-sha384 hmac-sha512 kdf key-derivation key-derivation-function key-exchange key-exchange-protocol sha256 sha384 sha512
Last synced: 27 Mar 2025
https://github.com/systemslibrarian/crypto-lab-grover
Browser-based Grover's algorithm simulation — amplitude amplification, oracle phase kickback, inversion-about-mean diffusion, probability oscillation. AES-128 weakened to 2^64. AES-256 survives at 2^128. The fix is doubling key length. No backends. No simulated shortcuts.
aes amplitude-amplification browser-demo crypto-lab cryptography grovers-algorithm post-quantum quantum-computing symmetric-cryptography
Last synced: 01 Jun 2026
https://github.com/tatemsoft/cryptr
A simple shell utility for encrypting and decrypting files using OpenSSL.
aes-256 aes-encryption bash bash-script cryptography decryption encryption openssl shell-script
Last synced: 08 May 2026
https://github.com/systemslibrarian/crypto-lab-hawk
Browser-based educational demo of HAWK — the only lattice-based candidate in NIST's Round 2 Additional Signatures process. Integer-only arithmetic, discrete Gaussian sampling over Z with fixed tables, no rejection loop. Side-by-side with Falcon and ML-DSA.
constant-time crypto-lab cryptography digital-signatures discrete-gaussian-sampling falcon hawk hawk-signatures integer-only lattice-cryptography lattice-isomorphism-problem lattice-signatures ml-dsa module-lip nist-additional-signatures nist-round-2 post-quantum-cryptography
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-noise-pipe
Browser-based Noise Protocol Framework demo — NN, XX, IK, and IKpsk2 handshake patterns with real X25519 arithmetic, live transport encryption, and a WireGuard deep dive. No backends. No simulated math.
aes-256-gcm browser crypto-lab cryptography forward-secrecy handshake hkdf key-agreement noise-protocol secure-channel signal-protocol typescript vite wireguard x25519
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-bcrypt-forge
Browser-based bcrypt deep-dive — anatomy, cost factor benchmarking, timing-safe verification, and a real-world breach simulation. Part of the crypto-lab suite.
argon2 bcrypt blowfish browser-crypto cost-factor crypto-lab cryptography password-hashing password-security rainbow-table security timing-attack typescript vite web-security
Last synced: 01 Jun 2026
https://github.com/mrchristensen/aes
Simple Advanced Encryption Standard (AES) implementation that can generate 128, 192, and 256 bit keys.
aes-encryption computer-security cryptography
Last synced: 26 Aug 2025
https://github.com/systemslibrarian/crypto-lab-iron-serpent
Browser-based demo of Serpent-256, the AES finalist with the largest security margin — featuring encrypt/decrypt, round comparison visualization, and live performance benchmarks
aes-finalist argon2id block-cipher browser-demo crypto-lab cryptography hmac javascript serpent symmetric-encryption
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-dead-sea-cipher
Browser-based cryptographic history demo — from Atbash in Jeremiah 25:26 (~600 BCE) to AES-256-GCM (2001 CE). Every cipher, every fatal flaw, every lesson that built the next one.
aes-gcm atbash caesar-cipher cryptography frequency-analysis historical-ciphers kasiski one-time-pad vigenere-cipher webcrypto
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-rsa-forge
Browser-based RSA demo — textbook RSA, OAEP, PSS signatures, and live attacks including small exponent, Bleichenbacher PKCS#1 v1.5 oracle, and padding oracle. Real WebCrypto operations. No backends. No simulated math.
asymmetric-encryption attacks bleichenbacher browser crypto-lab cryptography padding-oracle pkcs1 post-quantum public-key-cryptography rsa rsa-oaep rsa-pss typescript vite
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-ratchet-wire
Browser-based demo of the Double Ratchet Algorithm — the cryptographic protocol powering Signal, WhatsApp, and Google Messages. Live conversation with forward secrecy, break-in recovery, and key compromise simulation.
aes-gcm browser-demo crypto-compare cryptography double-ratchet forward-secrecy hkdf key-exchange messaging-protocol post-quantum-ready signal-protocol typescript vite x25519
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/cipher-museum
Interactive virtual museum exploring 2,500 years of cryptography — 37 ciphers in 10 exhibit halls with live demos, cryptanalysis tools, and connections to modern & post-quantum systems.
caesar-cipher ciphers cryptanalysis cryptography education enigma historical-cryptography vigenere-cipher
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-patron-shield
Browser-based demo of two-server Information-Theoretic Private Information Retrieval (IT-PIR) — applied to library catalog privacy. Because patrons deserve mathematical guarantees, not just policy promises.
crypto-compare cryptography information-theoretic-security library-privacy pir private-information-retrieval xor
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-lattice-fault
Browser-based lattice PQC implementation attack demo — NTT power analysis (ML-KEM CPA), rejection sampling fault bypass (ML-DSA key recovery), KyberSlash timing side-channel, faulty KECCAK seed injection. Mathematical security ≠ implementation security. No backends. Simulated attacks.
crypto-lab cryptography dilithium fault-injection kyber kyberslash ml-dsa ml-kem ntt post-quantum power-analysis side-channel timing-attack
Last synced: 01 Jun 2026
https://github.com/systemslibrarian/crypto-lab-dilithium-seal
Browser-based demo of ML-DSA (CRYSTALS-Dilithium), the lattice-based post-quantum digital signature scheme standardized as NIST FIPS 204 in August 2024. Sign, verify, and seal documents — quantum-resistant.
browser-demo crypto-lab cryptography crystals-dilithium digital-signatures lattice-cryptography ml-dsa module-lwe nist-fips-204 post-quantum-cryptography typescript vite webcrypto
Last synced: 01 Jun 2026
https://github.com/devehab/cryptotools
An educational cryptography toolkit in Arabic that provides hands-on learning for various cryptographic concepts including wallet generation, encryption/decryption, hashing, and digital signatures. All operations are performed client-side for maximum privacy and security.
cryptography digital-signatures encryption-decryption encryption-decryption-tool hash-functions open-source wallet-generator
Last synced: 09 Feb 2026
https://github.com/samuel-lucas6/ctx.net
Chan and Rogaway's fully committing AEAD construction using ChaCha20-Poly1305 and BLAKE2b-160.
aead blake2 blake2b chacha20 chacha20-poly1305 chacha20poly1305 committing-aead crypto cryptography key-committing poly1305
Last synced: 27 Mar 2025
https://github.com/denisbytes/zig-jks
Pure Zig implementation of Java KeyStore (JKS) encoder/decoder. Read/write JKS files with zero dependencies. Compatible with Java's keytool.
certificate cryptography java-keystore jks keystore security zig
Last synced: 19 Jun 2026
https://github.com/a-s-russo/eleventh-hour-mystery
Decipher the paragraph of ciphertext in 'The Eleventh Hour: A Curious Mystery' by Graeme Base at the end of the book using a Caesar cipher
Last synced: 29 May 2026
https://github.com/gatanegro/unify-theory
unifies spacetime, matter, and forces in Oscilatorry Field
com cryptography dynamic math nonlinear-dynamics novel oscillatory physics theory unified
Last synced: 15 Mar 2025
https://github.com/lepresk/pki-infrastructure
Three-tier PKI in Node.js — Root CA, Intermediate CA, signing certificates, chain verification, and document signing
certificate-authority cryptography nodejs pki typescript x509
Last synced: 16 Jun 2026
https://github.com/advaith7joshi/project-nexus
Simplified demonstration of blockchain workflow
blockchain blockchain-technology crypto cryptocurrency cryptography finance
Last synced: 12 Jun 2025
https://github.com/naveenrajm7/cipherapp
basic python gui for some cryptographic techniques
cipher-algorithms cryptography
Last synced: 22 Jun 2026
https://github.com/atropinetears/atropinetears.github.io
My personal site to not only demonstrate my web design / web development skills, but also to list out my blog posts, projects, resources, and other information.
0xsilene blog cryptography github-io github-pages security web web-design web-development website
Last synced: 27 Feb 2026
https://github.com/lazula/cryptopals
A collection of solutions for the challenges at cryptopals.com in C89
Last synced: 08 Jul 2025
https://github.com/xdv/divvy-wallet
Divvy Wallet Generator
cryptocurrency cryptography divvy secret test-vectors xdv
Last synced: 16 Jan 2026
https://github.com/chardoncs/minotp
Simple OTP library for Rust.
cryptography hotp one-time-password otp rust totp
Last synced: 10 Feb 2026
https://github.com/salrashid123/mcbn
Multiparty Consent Based Networks (MCBN)
cryptography pki tls trusted-computing
Last synced: 22 Aug 2025
https://github.com/smallstep/pem-key-wrap
🔐 Wrap PEM files using RSAES-OAEP with SHA-256 + AES-KWP
Last synced: 27 Feb 2026
https://github.com/stevemats/hashgenerator
The how to generate hashes using hashlib module in python.
cryptography hashlib hashlib-library python
Last synced: 22 Jun 2026
https://github.com/4l3x777/ecdsa
Elliptic Curve Digital Sign Algorithm [PrimeField]
big-numbers cryptography diffie-hellman digital-signature elliptic-curve-cryptography nist prime-fields
Last synced: 26 Aug 2025
https://github.com/frankrichardhall/huddle01-testnet-airdrop-bot
A Node.js-based automation script that helps you join Huddle01 rooms with multiple wallet accounts at once to earn testnet participation points efficiently.
airdrop automation blockchain cryptography evm google-meet meet node testnet
Last synced: 22 Aug 2025
https://github.com/ddc/ddccryptography
Encode and Decode strings with Cryptography
cryptography ddccryptography decode decoder encode encoder python python-3 python3
Last synced: 11 Feb 2026
https://github.com/sajad-net/handybar
Base64 encoder and decoder extension
base64 base64-decoding base64-encoding chrome-extension cryptography css html javascript javascript-base64 javascript-cryptography json webbrowser-extension
Last synced: 11 Apr 2026
https://github.com/cosmian/cloudproof_rust
The Rust Cloudproof Data protection Library
Last synced: 27 Feb 2026
https://github.com/aeliot-tm/doctrine-encrypted-bundle
Doctrine Encrypted bundle permits to encrypt/decrypt separate columns of database via Doctrine column types.
ast cryptography decryption doctrine doctrine-extension doctrine-orm encryption php routines symfony-bundle
Last synced: 12 Feb 2026
https://github.com/purarue/plus1
A symmetric substitution cipher used to obfuscate code that I'd rather not be indexed.
Last synced: 30 Mar 2025
https://github.com/realabbas/offline-blockchain-transaction-signing-private-wallet
A private offline wallet for signing incoming transaction from web interface
cryptography offline public-private-key qrcode signing transaction wallet
Last synced: 29 May 2026
https://github.com/ametel01/tatsumaki
Token mixer for Starknet
cairo cryptography privacy starknet
Last synced: 28 Feb 2026
https://github.com/moeenn/go-token
Generate crypto-random strings (i.e. tokens) of any length
crypto-random-string cryptography go golang token
Last synced: 11 Mar 2026
https://github.com/daleroberts/asd-coin
Playing with the ASD Commemorative Coin
Last synced: 05 Jan 2026
https://github.com/nunees/trabalho_rsa_unip
Implementação do algoritmo RSA básico.
cryptography python rsa-cryptography
Last synced: 20 Mar 2025
https://github.com/l1asis/vault-tar
AES-256-GCM file and directory encryption CLI with chunked streaming, configurable compression, and output splitting.
aes-256-gcm archiving cli compression cryptography directory-encryption encryption file-encryption pbkdf2 privacy python security
Last synced: 14 Feb 2026
https://github.com/adelmofilho/tenispolar
Implementation ZENIT-POLAR substitution cipher method of encryption
cryptography r-package r-programming
Last synced: 31 Mar 2025
https://github.com/kevincharm/blstoise
BLS12-381 + pairings + RFC9380 + BLS sigs
Last synced: 28 Feb 2026
https://github.com/ben854719/trade-transfer-workflow-optimizer
This AI portfolio tools securely analyzes asset allocation, sector exposure, and performance. Its graph compares real and predicted close prices, enhanced with sentiment indicators such as “Confident” and “Surprised.” An avatar assistant provides user guidance combining technical accuracy with intuitive explanations.
agentic-ai avatar cryptography emotion-analysis encryption gemini json langgraph langraph machine-learning-algorithms matplotlib mcp-server numpy opencv-python pandas python pytorch rs256 seaborn
Last synced: 15 Feb 2026
https://github.com/emrekayik/ekode
EKODE, metni resim üzerinde saklamak için kullanılan bir algoritmadır.
Last synced: 17 May 2026
https://github.com/siterelenby/keyquorum
Shamir secret sharing daemon for distributed teams. Memory hardened, designed to prevent intercepting or handling another user's key or the secret itself, without jank or vulnerability points like shared tmux sessions.
cli cryptography cryptography-tools distributed-teams key-management linux rust secret-sharing security shamir shamir-secret-sharing
Last synced: 12 Jun 2026
https://github.com/dubniczky/trustless-authentication
Secure authentication protocol without sending or storing the password
authentication cryptography password protocol
Last synced: 31 Mar 2025
https://github.com/gabrielmajeri/crypto-data-structures
Data structures in Rust for cryptocurrencies and blockchain-related technologies
blockchain cryptocurrency cryptography merkle-tree
Last synced: 08 Apr 2025
https://github.com/projects-developer/diffie-hellman-key-exchange-algorithm-cryptography-project
This project implements the Diffie-Hellman Key Exchange Algorithm, a popular cryptographic protocol that enables two parties to establish a shared secret key over an insecure communication channel. Diffie-Hellman-Key Exchange Algorithum Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video
btech-project computer-science-project cryptography diffie-hellman-key-exchange final-year-projects finalyearproject finalyearprojects key-exchange-public-key-cryptography mtechprojects private-key-cryptography secure-communication secure-key-exchange
Last synced: 01 Mar 2026
https://github.com/girish1729/openssl-cheatsheet
OpenSSL command line toolkit cheatsheet
command-line cryptography openssl
Last synced: 19 Mar 2026
https://github.com/qorri-di/convert-tools
Convert Tools for Document, Image, Video and File
and convert cryptography document file for image pdf pdf-converter pdf-document pdf-generation pdf-viewer steganography tools video
Last synced: 20 Mar 2026