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: 2026-07-02 00:06:57 UTC
- JSON Representation
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/primetdmomega/bay-cracker
A set of tools for encryption, decryption of messages and to create new cyphers !
cryptography decryption encryption
Last synced: 25 Mar 2025
https://github.com/animo/expo-secure-environment
Expo Module for cryptographic operations using the devices Secure Environment behind biometric authentication.
android biometry cryptography expo ios react-native secure-environments typescript
Last synced: 16 Feb 2026
https://github.com/fastroware/password-manager
Offline password manager with encrypted local storage and user-friendly interface using python.
aes cryptography desktop-app encryption foss-password-app gui offline open-source password-manager python python-gui-password-manager security tkinter
Last synced: 06 Jul 2025
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/rani-abha/cryptography_algorithms
In this repository, I've gathered a collection of cryptographic algorithms that I've learned during my college years and implemented for both learning and practical purposes.
algorithms blacklist cipher-algorithms cryptography digitalsignature firewall-rules playfair-cipher sha1-hash whitelist
Last synced: 06 Jul 2025
https://github.com/themaskedman981/sage-boolean-solver
Implementation of Boolean Arithmetic in SAGE math
Last synced: 30 May 2026
https://github.com/madliani/caesar-cipher
The Caesar's Cipher Encoder and Decoder
caesar-cipher cryptography ruby
Last synced: 01 Mar 2025
https://github.com/seniorbatleo/cryptocart
Secure chat software for your computer.
chat cryptocart cryptography messaging secure security
Last synced: 24 Jun 2026
https://github.com/make-github-pseudonymous-again/id
:performing_arts: Aurélien's public keys
cryptography public-key security
Last synced: 11 Mar 2026
https://github.com/rstacks/downunderctf2024-writeup
Writeups for the challenges I attempted at DownUnderCTF 2024.
cryptography ctf ctf-writeups forensics osint reverse-engineering web-exploitation
Last synced: 13 Apr 2026
https://github.com/mrummanhasan/cryptography
cryptography extended-euclidean-algorithm traditional-cipher
Last synced: 11 Jun 2026
https://github.com/prasunchakra/EncipherX
A simple Django-based Caesar Cipher application demonstrating basic text encryption and decryption. Currently for learning fundamental cryptographic concepts, experimenting with shift-based ciphers, and later on building upon for more advanced encryption methods.
cipher cryptography django python
Last synced: 16 Sep 2025
https://github.com/mthaler/cryptography
Cryptographic algorithms implemented in Rust
cryptography rust rust-library
Last synced: 09 Apr 2025
https://github.com/allenvox/infosec
Workspace for Information Security class
cryptography go information-security
Last synced: 12 Jun 2026
https://github.com/h0llyw00dzz/ocsp-fiber
This PKIX OCSP Fiber Framework
advanced cryptography go idiomatic-go restful-api security
Last synced: 29 May 2026
https://github.com/elamani-drawing/morseus
Morseus est une bibliothèque Rust permettant d'encoder et de décoder le texte en code Morse. Elle offre également la possibilité de jouer le code Morse en émettant des signaux sonores à l'aide du dispositif audio par défaut de votre système, ainsi que d'exporter le code Morse en fichiers audio WAV.
audio compression crates-io cryptography encoding morse morse-code rust rust-lang rustlang
Last synced: 02 Apr 2026
https://github.com/qalle2/nes-md5
Qalle's MD5 Hasher (NES)
6502 assembly cryptography homebrew md5 nes
Last synced: 16 Apr 2026
https://github.com/roydevashish/chacha20-hash-lightweight-cryptographic-hash-function-based-on-chacha20
A lightweight cryptographic hash function inspired by ChaCha20, designed for speed, simplicity, and efficiency in resource-constrained environments. Ideal for embedded systems, research, and educational purposes. Not intended for production use without further cryptanalysis.
chacha20 cryptographic-hash-functions cryptography hash-function
Last synced: 13 Jun 2026
https://github.com/alok-38/software-engineering-specialization
Explore a Career as a Software Engineer. Learn the basics of programming and software development
algorithms cryptography data-structures hashtable html-css-javascript java problem-solving
Last synced: 25 Mar 2025
https://github.com/egorgvo/sberbank_callback_async_cryptography
Python implementation of Sberbank signature verification using async cryptography
cryptography sberbank signature-verification
Last synced: 11 Mar 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/raffadndm/qbot
Telegram bot in Python
barcode-scanner cryptography python qrcode
Last synced: 05 Sep 2025
https://github.com/mochafreddo/bcrypt-benchmark
This project is designed to benchmark the performance of bcrypt hashing at different salt rounds. It helps in determining the optimal number of rounds for hashing passwords, balancing security and performance.
authentication bcrypt benchmark cryptography hashing-algorithm nodejs nodejs-security password-hashing performance-testing security
Last synced: 12 Apr 2026
https://github.com/validpay-io/validpay-react-native-sdk
Official React Native SDK for ValidPay CVCP — QR-based cryptographic document verification for mobile apps.
check-fraud cryptography document-verification mobile-sdk qr-verification react-native
Last synced: 15 Jun 2026
https://github.com/thecolonycc/attestation-envelope-spec
Cross-platform attestation envelope spec for agent-native claims. Pointer-based evidence, custodian-signed coverage metadata, sigchain over a typed witnessed claim.
agent-identity agent-security ai-agents attestation colony cryptography ed25519 json-schema provenance specification thecolony verifiable-credentials
Last synced: 24 Jun 2026
https://github.com/pedroalbanese/leacrypt
TTAK.KO-12.0223 Lightweight Encryption Algorithm (ISO/IEC 29192-2:2019) with Galois/Counter Mode (LEA-GCM)
aead cryptography golang lea symmetric-encryption
Last synced: 16 Jun 2026
https://github.com/shanthanu9/cryptopals-solutions
Solutions for Matasano Cryptopals challenges
cryptography cryptopals-challenges
Last synced: 12 Jun 2025
https://github.com/alexyer/xxxdh-js
WASM wrapper around xxxdh library implementing Extended Triple Diffie-Hellman key exchange.
cryptography diffie-hellman key-exchange-protocol
Last synced: 17 Jan 2026
https://github.com/farchanjo/merkle
Local-first MCP vault for Claude Code — LLMs hold opaque handles, operators approve every reveal, every access leaves a BLAKE3 hash. Rust 2024 / DDD + Hexagonal.
argon2id audit-log blake3 claude-code cryptography ddd ed25519 hexagonal-architecture local-first mcp model-context-protocol rust rust-2024 secrets secrets-management security spec-driven-development sqlite vault xchacha20-poly1305
Last synced: 17 Jun 2026
https://github.com/thibmeu/rfc9500
Public Key Cryptography Test Keys from RFC 9500
Last synced: 17 Apr 2026
https://github.com/lihongjie0209/sm-js-bc
SM2/SM3 cryptography TypeScript implementation based on Bouncy Castle Java - Zero dependencies, fully compatible, browser & Node.js support
bouncy-castle chinese-cryptography cryptography elliptic-curve gm-algorithm sm2 sm3 typescript
Last synced: 04 Apr 2026
https://github.com/harmin-parra/x509-wrapper
Wrapper for the pyca/cryptography package to query attributes of X509 cryptographic objects in a fast and simple way
cryptography python python3 x509
Last synced: 12 Jun 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/viveksahu26/cobra_cli
chit-chat: send encrypt and decrypt messages in your style
Last synced: 04 Jul 2025
https://github.com/sovereignbase/cryptosuite
JS/TS runtime-agnostic, quantum-safe, and agile cryptography toolkit with a declarative API for cipher messaging, message authentication, digital signatures, key agreement, and identifiers.
browser bun bytecodec crypto cryptography decryption deno encryption hmac jwk node opaque-identifiers signing sovereignbase typescript verification webcrypto
Last synced: 17 Apr 2026
https://github.com/abdulrahmans0414/securepass-generator
SecurePass Generator is a modern, user-friendly password generator built with React. Create strong, randomized passwords with customizable options like length, numbers, and special characters.
clipboard-copy cryptography frontend password-generator react securepasswords security tailwindcss user-friendly web-application
Last synced: 18 Apr 2026
https://github.com/peterfritz/time
Get the current time, timezone, and a language-sensitive representation of the current time in the local timezone based on the user's IP. Create and validate signed date tokens.
Last synced: 12 Jun 2025
https://github.com/alex-snd/vigener
🔓 The project is intended for convenient key recovery from the ciphertext obtained using the Vigenère cipher.
Last synced: 29 May 2026
https://github.com/dexcompiler/curves
Elliptic curve operations over finite fields
cryptography csharp elliptic-curve-cryptography finite-fields high-performance prime-numbers
Last synced: 04 Jun 2026
https://github.com/erik-castro/devsecurity
Colecao de 5 livros tecnicos open-source sobre seguranca de software em portugues (PT-BR): Security-Driven Development, DevSecOps, Analise de Malware, Concorrencia Segura e Criptografia Engenheira. C++17/20, CVEs documentados, 300K+ linhas.
application-security books concurrency cplusplus cryptography cybersecurity devsecops encryption fuzzing malware-analysis open-source owasp post-quantum-cryptography pt-br reverse-engineering secure-coding security thread-safety tls
Last synced: 25 Jun 2026
https://github.com/kamb-code/sha256-r19-preimage
Oracle-free preimage attack on 19-round reduced SHA-256 — paper, solver, and independent verifier
cryptanalysis cryptography cuda gpu hash-functions preimage-attack security-research sha256
Last synced: 27 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/zsoulaimane/blockchain-road
Starting Road
basic bitcoin blockchain cryptography ethereum fullstack fundamentals python roadmap sha256
Last synced: 20 Apr 2026
https://github.com/5obhan/cs01-image-steganography
Hiding Information Inside an Image using AES-CBC Encryption & Least-Significant-Bit Steganography
aes aes-256 aes-cbc aes-cbc-256 aes-cbc-encryption aes-encryption cryptography cyber-security cybersecurity encrypted-data encryption-decryption image-steganography least-significant-bit lsb-bit-manipulation lsb-steganography steganography
Last synced: 05 Aug 2025
https://github.com/ppad-tech/poly1305
The Poly1305 message authentication code
cryptography haskell mac poly1305
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/quantachain/quanta-android-core
Core Android library powering QuantaChain mobile applications, built in Rust for high-performance cryptographic operations and secure transaction handling.
Last synced: 05 Jun 2026
https://github.com/aarontsang/secure-auth-threat-detection
Backend service to maintain security.
bcrypt cryptography docker jwt-authentication postgresql postman reactjs redis salting
Last synced: 22 Apr 2026
https://github.com/goseind/kryptolearn
Krypto Learn - Grundlegende Konzepte der Kryptographie lernen und verstehen
cryptography expo javascript kryptografie react react-native
Last synced: 22 Feb 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/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/selendra/contract-registry
Selendra Contract Registry is a WASM smart contract registry writen in Rust based on ink! smart contract framwork.
cryptocurrency cryptography p2p-network payment rustlang smart-contracts token wasm
Last synced: 24 Apr 2026
https://github.com/pieroboseta/filenfile
filenfile is a Python application that securely hides and extracts files and folders within a main file of your choice using encryption and compression techniques, providing a simple and efficient way to store sensitive data discreetly.
compression cryptography data-hiding data-security file-archiving file-encryption file-security hidden-files hide lzma-compression metadata-encryption python-application python-gui python-script secure-storage tkinter
Last synced: 01 Apr 2025
https://github.com/paulopacitti/ascon-v
5️⃣ Ascon lightweight cryptographic algorithm implementation for improved performance on riscv64
allwinner allwinner-d1 ascon cryptography lightweight-cryptography risc-v riscv64
Last synced: 25 Apr 2026
https://github.com/ntdls/nasccl
NetworkDLS Algorithmic Symmetric Cipher Cryptography Library
cryptography encryption library
Last synced: 25 Apr 2026
https://github.com/imnotannamaria/python-flask-auth
Flask User Authentication and CRUD API
cryptography flask pymysql python
Last synced: 25 Apr 2026
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/lesnyrumcajs/matasanocpp
Matasano Crypto Challenge using C++
cpp cryptography cryptopals-challenges google-test
Last synced: 19 Jun 2026
https://github.com/transmute-industries/linked-data-signature-starter-kit
JSON-LD Signature Starter Kit
Last synced: 16 Jul 2025
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/badgerbloke/crypto-exchange
The fastest and most secure crypto exchange platform.
crypto cryptocurrency cryptocurrency-exchanges cryptography ethereum nextjs reactjs single-page-app smart-contracts
Last synced: 16 Mar 2025
https://github.com/acifani/cryptopals-challenges
🔒 Personal take on the cryptopals crypto challenges, in Go
cryptography cryptopals-challenges go golang
Last synced: 14 Feb 2026
https://github.com/elliotwutingfeng/balloonhashing.jl
Balloon Hashing implemented in Julia.
crypto cryptography julia julia-language kdf-algorithm key-derivation-function password password-hash
Last synced: 27 Feb 2025
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/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/thenareshofficial/password-manager
Password Manger in Python
cli-tool cmd cryptography cybersecurity-tool docker encryption-decryption github linux master-password password password-manager password-manager-cli pbkdf2 pip python python-docker python3 security-tools strong-password-generator tools
Last synced: 12 Apr 2026
https://github.com/jayagra/turbid
aes-256 cryptography encryption macos swift
Last synced: 28 Apr 2026
https://github.com/daisvke/dcrypt
dcrypt is a file encryption/decryption tool that adds a custom header to encrypted files, storing essential metadata for decryption and management of the encrypted content.
aes-128-cbc c cryptography encryption-decryption keygen
Last synced: 25 Mar 2025
https://github.com/gkbrk/r30sponge.h
Sponge function based on the Rule 30 Cellular Automaton
c c89 c99 cryptography stb stb-library
Last synced: 24 Mar 2025
https://github.com/dkxce/dixu
dkxce simple opensource free symmetric crypt algorythm (UTF8, ASCII, Win-1251)
512 cryptography dkxce encoder-decoder security text windows
Last synced: 29 Apr 2026
https://github.com/edycutjong/visor
🥽 Privacy-Blind Egress Gateway inside TEEs
cryptography egress-gateway intel-tdx nextjs privacy react rust security t3-adk tailwind tee typescript wasm
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/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/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/simonmasson/efficient-glv-curves-generation
Generation of efficient four-dimensional GLV curves with high security (256-bit)
cryptography curves elliptic glv sage
Last synced: 11 Jun 2025
https://github.com/hrichharms/rc4
RC4 implemented in C
cryptography rc4 rc4-algorithm rc4-cipher rc4-encryption
Last synced: 08 Apr 2025
https://github.com/mutkuensert/androidsignatureexample
An example Android app for generating key pairs in trusted execution environment to sign data requiring biometric authentication using Android keystore.
android androidkeystore biometric-authentication cryptography digital-signature digital-signature-algorithm dsa-algorithm ecdsa elliptic-curve keypair keystore secure-enclave security tee trusted-execution-environment
Last synced: 01 May 2026
https://github.com/magical/libargon2
fork of the argon2 reference implementation
Last synced: 24 Mar 2025
https://github.com/lokranjanp/2fa
A custom 2FA system using Python, SQL, Redis, and SMTP, featuring dynamic 6-digit OTP generation with PyOTP. Will develop it into AaaS [Authentication as a Service] .
cryptography entity-authorization flask python smtp user-authentication
Last synced: 01 May 2026
https://github.com/theoddysey/blockchain-go
A Bitcoin-like blockchain implementation in Go, demonstrating cryptographic principles, PoW consensus, UTXO transactions, wallet management, and P2P networking.
bitcoin blockchain boltdb consensus-algorithm cryptocurrency cryptography decentralized distributed-systems ecdsa golang p2p-network proof-of-work utwork wallet
Last synced: 02 May 2026
https://github.com/ivan-guerra/caesar_cipher
Caesar Cipher encrypt/decrypt/cracking utilities
caesar-cipher cryptography password-cracking
Last synced: 22 Jun 2026
https://github.com/nakedmcse/tscryptopals
TS Implementation of Cryptopals challenges
Last synced: 02 May 2026
https://github.com/mokkunsuzuki-code/stage354
Stage354: Signature Key Rotation Ledger Layer with Stage178 Assumption, Threat Model, and Guarantee Binding. Transparent key lifecycle tracking, signature key status recording, ledger chaining, and PQC migration-aware verification metadata.
audit compliance cryptography cybersecurity ed25519 evidence gpg key-lifecycle key-rotation ledger ml-dsa pqc provenance qsp signature-verification sigstore supply-chain-security transparency trust verification
Last synced: 23 Jun 2026
https://github.com/kenatsf/solidity-signature
cryptography ethereum nextjs security smart-contracts solidity
Last synced: 03 May 2026
https://github.com/filiprokita/goodpassword
GOOODPASSWORD is a password generator that uses algorithms to create strong, random passwords. With customizable length and complexity options, it helps users generate secure passwords that meet even the most stringent security requirements.
cryptography password password-generator python python3 randomness security simple
Last synced: 24 Mar 2025
https://github.com/bmeneg/lapwing
Lightweight crypto algorithms library for highly resource-constrained devices.
c clibrary cryptography embedded
Last synced: 24 Mar 2025
https://github.com/twilight-dream-of-magic/titanwallciphersspecification
TitanWall Stream Cipher & TitanWall Block Cipher Alogrithm Specification By Twilight-Dream
blockcipher cpp20 cryptography rc6 rc6-plus stream-cipher
Last synced: 09 Jun 2026
https://github.com/levongh/md5
The MD5 algorithm is a widely used hash function producing a 128-bit hash value. Although MD5 was initially designed to be used as a cryptographic hash function, it has been found to suffer from extensive vulnerabilities. It can still be used as a checksum to verify data integrity, but only against unintentional corruption.
Last synced: 03 Apr 2025
https://github.com/yashkarthik/hash_crakking
Hash texts entered.
cryptography hashing python python-3
Last synced: 10 Mar 2026
https://github.com/armintamzarian/aenigma
User-friendly AngularJS encryption module utilizing the Web Cryptography API and providing an extensible secure secret storage mechanism.
angularjs cryptography localstorage webcrypto
Last synced: 05 May 2026
https://github.com/systemslibrarian/crypto-lab-key-exchange
Browser-based key-exchange evolution — DH → ECDH → X25519 → ML-KEM → hybrid. Live discrete-log attack on toy DH, real elliptic-curve point arithmetic, and the jump from shared-exponent to encapsulation. The same idea, five generations
crypto-lab cryptography diffie-hellman ecdh hybrid-key-exchange key-exchange ml-kem post-quantum-cryptography x25519
Last synced: 09 Jun 2026
https://github.com/systemslibrarian/crypto-lab-ssh-handshake
Browser-based SSH handshake demo — real X25519 ECDH key exchange authenticated by an Ed25519 host key, known_hosts Trust-On-First-Use, MITM detection on host-key change. First contact is a leap of faith
crypto-lab cryptography ecdh ed25519 forward-secrecy host-key key-exchange known-hosts mitm ssh tofu trust-model trust-on-first-use x25519
Last synced: 09 Jun 2026
https://github.com/systemslibrarian/crypto-lab-opaque-gate
Browser-based OPAQUE aPAKE demo (RFC 9807, July 2025) — OPRF blind/evaluate/unblind, AES-256-GCM credential envelope, 3DH mutual authentication, server breach simulation. The password never touches the server. No backends. No simulated math.
3dh authenticated-key-exchange crypto-lab cryptography forward-secrecy opaque oprf pake password-authentication rfc9807
Last synced: 09 Jun 2026