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/quyxishi/ethanium

XChaChaPoly1305-Argon2id cli, built on cryptopp & libsodium

argon2id cli cryptography windows xchacha20-poly1305

Last synced: 15 May 2026

https://github.com/ashrockzzz2003/vault_007

One place to manage all your passwords!

aes blockchain cbc cipher cryptography flutter isar material-design offline-app password-generator password-manager security vault

Last synced: 08 Mar 2026

https://github.com/datumbox/vernamveil

VernamVeil: A Function-Based Stream Cypher

blake3 cryptography python

Last synced: 25 Jun 2025

https://github.com/sammyne/sm3

A Go implementation of SM3 cryptographic hash algorithm.

cryptographic-hash-functions cryptography

Last synced: 10 Apr 2025

https://github.com/lablnet/cryptographic_algorithms

My own implementation of the Cryptographic Algorithms in Python.

algorithms cryptography python

Last synced: 08 Sep 2025

https://github.com/shagege/blackbox

Surveillance tool using a permissionless blockchain

blockchain cryptography distributed-ledger p2p proof-of-work python

Last synced: 18 Aug 2025

https://github.com/phuc16102001/lamport-signature

The project implement the Lamport Signature which is a Digital signature. Furthermore, its weakness is spotted out by forging a signature.

blockchain cryptography digital-signature golang lamport-signature

Last synced: 15 Jan 2026

https://github.com/pyrmont/digestive

Digest things in pure Janet

blake3 checksums cryptography md5 sha1 sha2 sha3

Last synced: 09 Mar 2026

https://github.com/lukateras/rust-zerotier-crypto

ZeroTier-compatible cryptography library for Rust

cryptography hashcash rust zerotier

Last synced: 15 Jul 2025

https://github.com/hegdepavankumar/cipher-encryption-decryption

Cipher Encryption/Decryption This project is a simple implementation of the cipher encryption and decryption algorithm using JavaScript, HTML, and CSS. The cipher is a substitution cipher that replaces each letter in the plaintext with a letter a certain number of positions down the alphabet.

cipher cipher-algorithms cryptography encryption-algorithms encryption-decryption hashing-algorithm networking-concepts password security

Last synced: 03 Aug 2025

https://github.com/tynes/nameswaps

Decentralized Exchange Infrastructure for Handshake Names

bitcoin blockchain cryptocurrency cryptography handshake peer-to-peer

Last synced: 29 Apr 2026

https://github.com/dhcgn/gopqexperiment

My Go PQ Experiment

cryptography csidh ed448 go golang hpke post-quantum

Last synced: 26 Aug 2025

https://github.com/horus-org/payjoin-react-native

React Native Library to Payjoin

bitcoin cryptography lightning-network payjoin privacy

Last synced: 13 Oct 2025

https://github.com/kernelmethod/ChaChaCiphers.jl

GPU-compatible implementations of the ChaCha stream cipher family

cryptography rng

Last synced: 06 Apr 2026

https://github.com/JuliaCrypto/Krypto.jl

A futuristic crypto library. In Julia. [OLD]

cryptography decryption deprecated-repo ecc encryption julia pqc rlwe rsa

Last synced: 06 Apr 2026

https://github.com/snykk/ctf-writeups

ctf writeups

binary capture-the-flag cryptography ctf-learn ctf-writeups forensics pico-ctf reverse-engineering steganography web-exploitation

Last synced: 14 Jul 2025

https://github.com/opensuse/wardstone

Assess compliance for cryptographic keys.

certificates cryptographic-keys cryptography google-summer-of-code gsoc open-suse opensuse rust security security-audit security-automation security-tools suse x509

Last synced: 17 Aug 2025

https://github.com/lnqs/subchain

Local Blockchain Module for JavaScript

blockchain cryptography incredible javascript local typescript

Last synced: 16 May 2026

https://github.com/kosasih/quantum-mesh

A cutting-edge Git repository for developing advanced cryptographic protocols and blockchain integration for Pi Network, leveraging quantum computing principles for unparalleled security and efficiency.

cryptography protocol protocol-oriented-programming

Last synced: 08 Mar 2026

https://github.com/loicttn/notebooks

All my jupyter notebooks used to learn Cryptography, Mathematics, Security and Machine Learning.

algorithms cryptography jupyter-notebook machine-learning mathematics security

Last synced: 11 Aug 2025

https://github.com/anmol-singh-jaggi/sha2_512

:lock_with_ink_pen: An implementation of SHA-2 hash function with a digest size of 512 bits

c-plus-plus cryptography digest hash

Last synced: 26 Mar 2025

https://github.com/erhant/arithmetic-circuits

Moda Palas Blackboard Cryptography II - Arithmetic Circuits & R1CS

circuits cryptography qap r1cs rust

Last synced: 18 Feb 2026

https://github.com/fametrano/bbt

Bitcoin and Blockchain Technology Course Material

bitcoin blockchain blockchain-technology cryptocurrencies cryptography

Last synced: 22 Jun 2025

https://github.com/corvuscodex/multithread-polkadot-brute-force

Nodejs script that generates random private keys for the Polkadot blockchain and checks if the corresponding public address is in a list of addresses stored in a file named ‘data.txt’. If a match is found, the script logs the public address and saves the wallet and its private key (seed) to a file named ‘match.txt’.

bruteforce crack crypto cryptocurrency cryptography javascript nodejs polkadot polkadot-bruteforce polkadot-wallet seed seed-cracking wallet-bruteforce

Last synced: 13 Apr 2025

https://github.com/synacktraa/vigenere-cipher

Small and portable Vigenere Cipher encoder and decoder cli based tool written in C.

c-language cryptography decryption encryption terminal-based vigenere-cipher

Last synced: 23 Jul 2025

https://github.com/monich/foil

glib-style crypto

aes cryptography des-cipher encryption glib rsa security

Last synced: 21 May 2026

https://github.com/bytemare/crypto

Abstracted prime-order elliptic curve groups in Go.

cryptography elliptic elliptic-curves go hash-to-curve nist p256 p384 p521 prime-order-group rfc9380 ristretto255

Last synced: 10 Apr 2025

https://github.com/isaka-james/caesar

The Linux tool to decrypt Caesar Cipher written using Rust, Very Fast Indeed

caesar- caesar-decryption cryptography linux-tool rust rust-powered

Last synced: 15 May 2026

https://github.com/juliacrypto/krypto.jl

A futuristic crypto library. In Julia. [OLD]

cryptography decryption deprecated-repo ecc encryption julia pqc rlwe rsa

Last synced: 13 May 2025

https://github.com/querdos/flask-encryptor

Flask extension helping encrypting users personal files

cryptography decryption encryption file flask upload users

Last synced: 08 Mar 2026

https://github.com/codiepp/elykseer-base

cryptographic data archive; written in F#; envisaged to stay another 10 years

archive cli cryptography data distributed-storage dotnet fsharp longterm-storage

Last synced: 19 May 2026

https://github.com/varun-doshi/rs-merkletree

Rust Library to create Merkle Trees

cryptography data-structures ethereum hash merkle-proof merkle-tree rust tree

Last synced: 04 Oct 2025

https://github.com/VirgilSecurity/virgil-sdk-pfs-x

Virgil PFS SDK Objective-C/Swift

carthage cocoapods cryptography encryption perfect-forward-secrecy pki swift virgil-cards virgil-pfs-sdk

Last synced: 02 Aug 2025

https://github.com/mk-fg/tinydns-dynamic-dns-updater

Tool to generate and keep tinydns zone file with dynamic dns entries for remote hosts

automation cryptography djbdns dynamic-dns-entries nacl python tinydns

Last synced: 16 May 2026

https://github.com/10d9e/vhe

Verifiable Homomorphic Encryption

cryptography

Last synced: 15 Jan 2026

https://github.com/mohammadumar-dev/passkeys-cli

A secure, production-level command-line password manager with encryption, validation, and enhanced user experience.

aes-gcm argon2 cli command-line-tool cryptography developer-tools encryption password-manager postgresql production-ready python python-cli scrypt secure-by-design secure-storage security terminal-app validation

Last synced: 08 Mar 2026

https://github.com/firaskahlaoui/secury

Secury is a robust encryption and security application designed to ensure data privacy and access management. It features data encryption (Caesar Cipher, AES) and implements advanced Identity and Access Management (IAM) techniques, including Role-Based Access Control (RBAC) and Access Control Lists (ACL).

access-management acl aes-encryption caesar-cipher cryptography data-security encryption iam keyvault keyvault-secrets rbac siem

Last synced: 23 Jul 2025

https://github.com/cyrildever/feistel-jar

Feistel cipher implementation for the JVM providing format-preserving encryption

algorithm cryptography encryption feistel-cipher format-preserving-encryption fpe xor-operation

Last synced: 19 Feb 2026

https://github.com/actuallyachraf/algebra

A literate :pencil: implementation of algebraic primitives for cryptography and algebraic applications :alembic:

algebra bulletproofs cryptography elliptic-curve-arithmetic elliptic-curve-cryptography finite-fields learning-by-doing pairings polynomials primitives schnorr-signatures

Last synced: 02 Feb 2026

https://github.com/arnaud-robin/shake128

Implementation of SHAKE128 in c++.

cpp cryptography fips202 shake128

Last synced: 10 Apr 2025

https://github.com/xannythepleb/pycrypt

A rudimentary encryption program written in Python. Plan to add a lot more functionality soon. Please note this is an unaudited hobby project! If security is vital, use Signal or PGP.

blake2b chacha20-poly1305 cryptography encryption-tool python-encryption python3

Last synced: 05 Jun 2026

https://github.com/carlodepieri/vcrpy-encrypt

Encrypt vcrpy cassettes so they can be safely kept under version control.

cryptography python testing unit-testing vcrpy

Last synced: 13 Oct 2025

https://github.com/demining/coingecko-agent-ftpupload

Coingecko & Agent Ftpupload create beautiful crypto wallet addresses, but keep the private key safe

attack bitcoin bitcoin-wallet blockchain btc cryptocurrencies cryptography ecdsa ecdsa-cryptography ecdsa-signature privatekey privatekeygenerator privatekeys secp256k1 vulnerabilities vulnerability

Last synced: 03 May 2025

https://github.com/tteeoo/sest

🔑 A local command-line based password manager using AES-256 encryption.

command-line cryptography encryption go golang password-manager

Last synced: 17 Feb 2026

https://github.com/demining/vulnerable-to-debian-openssl-bug-cve-2008-0166

Search for BTC coins on earlier versions of Bitcoin Core with critical vulnerability OpenSSL 0.9.8 CVE-2008-0166

attack bitcoin bitcoin-wallet blockchain btc cryptocurrencies cryptography ecdsa ecdsa-cryptography ecdsa-signature elliptic-curves elliptic-curves-cryptography privatekey secp256k1 vulnerabilities vulnerability

Last synced: 03 May 2025

https://github.com/zebrunner/carina-crypto

Cryptographic Java Library. Provides an interface for encrypting / decrypting based on Cipher. Part of the Carina Framework

carina carina-framework cryptography java security

Last synced: 30 Apr 2025

https://github.com/0xdeafcafe/cypher-swift

Cipher algorithm to encode data into Taylor Swift lyrics

cipher ciphers cryptography cypher taylor-swift

Last synced: 24 Mar 2025

https://github.com/intob/godave

P2P KV store

communication cryptography kv-store p2p privacy udp

Last synced: 21 Feb 2026

https://github.com/towerism/stegosaurus

A steganography tool written in rust

bitmap bmp cli cryptography image image-processing png steganography

Last synced: 10 Jun 2025

https://github.com/simplito/privmx-bridge

Zero-knowledge server for secure storage and transfer of E2E encrypted data.

chat communication cryptography data-transfer decryption e2ee end-to-end-encryption files messages messaging privacy privacy-protection private privmx secure security simplito storage thread zero-knowledge

Last synced: 19 Apr 2025

https://github.com/fpoirotte/cryptal

Cryptography Abstraction Layer for PHP

abstraction crypto cryptography layer php

Last synced: 24 Mar 2025

https://github.com/lukasz-zimnoch/ipfs-market

Example repository intended to demonstrate a simple digital goods trading system powered by Ethereum smart contracts, IPFS file system and some basic cryptographic algorithms.

blockchain cryptocurrency cryptography ethereum go ipfs solidity

Last synced: 14 Apr 2026

https://github.com/eminmuhammadi/hidemydata

Managing a couple of algorithms to decrypt or encrypt text [PHP]

algorithms assymetric-security cryptography decryption encryption php

Last synced: 07 Jan 2026

https://github.com/yangboz/istorybook

a oh-so-adorable CryptoStorybook with Benny, Nick, SoftEmpire, Jiale...

artificial-intelligence blockchain c-plus-plus cocos-creator cocos2d-js cryptocurrency cryptography genetic-algorithm html5 javascript microservices opencv restful-api spring-boot wechat-mini-program wexin

Last synced: 14 Aug 2025

https://github.com/matutetandil/anyhide

Hide any data in any file. Steganography tool that never modifies the carrier - transmits only encrypted positions. X25519 + ChaCha20 with forward secrecy.

chacha20 cli covert-communication cryptography data-hiding encryption forward-secrecy plausible-deniability privacy rust security steganography x25519

Last synced: 13 Jan 2026

https://github.com/legend2ks/rapidsum

Checksum calculator and verifier tool

checksum checksum-calculator crc32 cryptography hashing md5 sha1 utilities

Last synced: 28 Apr 2026

https://github.com/avivsinai/telclaude

Secure Telegram-Claude bridge with LLM-based command screening and tiered permissions

ai-agent anthropic claude cryptography docker isolation llm llm-security permission-tiers sandbox security telegram-bot typescript

Last synced: 28 May 2026

https://github.com/just-do-halee/secwords

secure and safe password container.

algorithms container cryptography no-std password rust security temporary

Last synced: 10 Jun 2025

https://github.com/openmined/daa.js

A javascript wrapper around https://github.com/xaptum/ecdaa

cryptography identity iot javascript

Last synced: 02 Jul 2025

https://github.com/openmined/syft.cpp

SOON TO BE DEPRECATED - A library for encrypted, privacy preserving machine learning

cpp cryptography deep-learning privacy pytorch secure-computation syft

Last synced: 02 Jul 2025

https://github.com/faisalahmedbijoy/image_cryptography_with_autoencoders

Deep learning in image Cryptography

cryptography deep-learning image image-processing security

Last synced: 10 Oct 2025

https://github.com/OmiyaGames/omiya-games-cryptography

Unity package containig a collection of cryptography-related tools.

cryptography omiya-games openupm unity unity-asset unity-editor unity-scripts unity2d unity3d

Last synced: 25 Apr 2025

https://github.com/lunes-platform/ed25519-axolotl

📦 Ed25519-like signatures with X25519 keys, Axolotl-style.

axolotl blockchain crypto cryptocurrency cryptography ed25519 ethereum lunes

Last synced: 27 Oct 2025

https://github.com/aead/blake2b

The BLAKE2b hash algorithm as defined in RFC 7693

blake2b blake2b-hash-algorithm cryptography go

Last synced: 15 Mar 2025

https://github.com/wildonion/thecry

🥲 my whole knowledge of low level coding, decrypting, decompiling and shellcode injection

aes-256 cbc-aes-encryption cryptography decompilation decryption-algorithm shellcode

Last synced: 27 Feb 2025

https://github.com/maxbubblegum47/pyfind

Applied cryptography project. Unimore computer science master degree. Apple find my devices implementation in python

aes-gcm apple cryptography ecdh kdf python unimore-informatica

Last synced: 10 Oct 2025

https://github.com/cs-joy/cryptography

about cryptography

cryptography graphein hidden secret study to-write

Last synced: 23 Jan 2026

https://github.com/wolframalph/dh

Diffie-Hellman key exchange implementation in Go

cryptography diffie-hellman golang

Last synced: 02 Jul 2025

https://github.com/radkomih/cryptography-resources

Cryptography related resources

cryptography knowledge-proofs mathematics number-theory zero-knowledge zero-knowledge-proofs zkp

Last synced: 04 Feb 2026

https://github.com/sandeep-shaw10/py-aes

Implementation of Advance Encryption Standard (AES-128/192/256/512) using Python and Numpy

aes-128 aes-192 aes-256 aes-512 blockcipher cryptography numpy python symmetric-encryption

Last synced: 22 Aug 2025

https://github.com/dmamakas2000/cryptanalysis-python

In this project, we experiment with the use of diverse cryptographic algorithms. First, we attempt to encrypt a plaintext message using the Vigenère Algorithm and a fixed-length encryption key. Afterward, we experiment with the decryption of the produced cipher using Kasiski's Method, as well as the Index of Coincidence statistical test.

cryptography index-of-coincidence jupyter-notebook kasiski-test python vigenere-cipher

Last synced: 18 Feb 2026

https://github.com/valerauko/csele

A library to handle ActivityPub-related crypto needs.

activitypub clojure crypto cryptography federation fediverse hacktoberfest

Last synced: 09 Oct 2025

https://github.com/omiyagames/omiya-games-cryptography

Unity package containig a collection of cryptography-related tools.

cryptography omiya-games openupm unity unity-asset unity-editor unity-scripts unity2d unity3d

Last synced: 26 Jan 2026

https://github.com/mgit-at/mqv

Package mqv implements MQV ECC as described in "NIST Special Publication 800-56A Revision 3".

cryptography cryptography-algorithms cryptography-library golang golang-package

Last synced: 09 Mar 2026

https://github.com/martian56/rail_fence

Rust implementation of the **RailFence Cipher**

cryptography encryption-decryption rail-fence rail-fence-cipher

Last synced: 27 Dec 2025

https://github.com/delagen/cadesplugin

CryptoPro EDS Browser plug-in typescript implementation

cadesplugin cryptography cryptopro gost3411-2012

Last synced: 16 Mar 2026

https://github.com/messsimo/crypto-search

App for Crypto House which show live crypto coin information

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Last synced: 25 Feb 2026

https://github.com/elydre/sun-breaker

Module python de chiffrement avec perte

cryptography hashing

Last synced: 18 Jan 2026

https://github.com/vineethsai/maif

Cryptographically-secure, auditable file format for AI agent memory with provenance tracking

ai ai-agent-tools ai-agents-framework cryptography

Last synced: 13 Jan 2026

https://github.com/rub-nds/terrapin-website

This repository hosts the public website for the paper "Terrapin Attack: Breaking SSH Channel Integrity By Sequence Number Manipulation" via GitHub Pages.

attack cryptography ssh vulnerability

Last synced: 18 Jan 2026

https://github.com/ericksumargo/pin

Built over Jetpack's EncryptedSharedPreferences API with less verbose syntax, efficient read/write mechanism, complex object and null default value support with compile time safety

coroutines cryptography jetpack kotlin sharedpreferences

Last synced: 09 Oct 2025

https://github.com/jitendragangwar123/100-days-of-web3-challenge

This repository contains a comprehensive overview of the fundamental concepts related to Blockchain Technology that I've acquired during the 100DaysOfWeb3 challenge. It serves as a valuable resource for understanding the core principles of blockchain technology.

blockchain cryptography ethereum etherjs javascipt smart-contracts solidity web3js

Last synced: 24 Aug 2025

https://github.com/phlay/pspka

password seeded public key authentication

asymmetric-cryptography authentication cryptography password

Last synced: 08 Apr 2025

https://github.com/kamushadenes/cloud-verify

Cryptographic attestation to verify if your application is running within a cloud environment.

cloud cryptography verification

Last synced: 30 Aug 2025

https://github.com/2140-dev/swiftsync

SwiftSync node and underlying crates

bitcoin cryptocurrency cryptography peer-to-peer

Last synced: 29 Aug 2025

https://github.com/binbash23/p

p - The password manager by Jens Heine <binbash@gmx.net>

cloud cryptography dropbox encryption manager password password-manager password-store pbkdf2 python secure

Last synced: 23 Mar 2025

https://github.com/qantik/ratcheted

Performance Survey of Several Ratcheted Key-Agreement and Messaging Protocols

benchmark cryptography go messaging ratchet

Last synced: 23 Mar 2025

https://github.com/ricky-ultimate/rust-rsa-encryption

A rust program to simulate RSA encryption & decryption operations on a small scale

cryptography rsa-encryption rust rust-lang

Last synced: 23 May 2026

https://github.com/linariaworks/mephi

Proof of concept Limbus Company server reimplementation.

api clojure cryptography game-server http-server limbus-company private-server project-moon unity web-server

Last synced: 04 Mar 2025

https://github.com/furritos/flask-simple-crypt

Flask extension based on simple-crypt that allows simple, secure encryption and decryption for Python.

cryptography decryption encryption flask python security symmetric symmetric-cryptography

Last synced: 24 Oct 2025

https://github.com/jpkusumi/greenfieldpqc

Side step quantum threats. Level up your encryption. Future proof your code. This cryptographic library for .NET development includes NIST standardized cryptographic primitives and Kusumi-512, a novel stream symmetric cipher with a 512 bit key size for enhanced quantum resistance.

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Last synced: 06 Feb 2026

https://github.com/shantanu66/cryptchat

A Desktop Application made using Tkinter framework in Python for Text Chatting between indivisuals or groups which is end to end encrypted using symmetric cyrptography algorithms.

aes-encryption cryptography desktop-application flask-api mongodb python tkinter

Last synced: 07 Oct 2025

https://github.com/hongyanwang/crypto-lab

Golang implementation of multiple crypto protocols

cryptography golang

Last synced: 21 Feb 2026

https://github.com/lumarans30/astralsafeserver

AstralSafe server with Node.js

aes cryptography expressjs nodejs quantum-randomness

Last synced: 05 May 2026

https://github.com/biglup/cardano-c

A pure C library for interacting with the Cardano blockchain. Compliant with MISRA standards and binding-friendly architecture.

c c99 cardano cryptocurrency cryptography serialization

Last synced: 23 Jan 2026

https://github.com/markus-beuckelmann/aescrypt

aescrypt is a small command line tool to encrypt/decrypt files and directories with the well-established AES-256-CBC algorithm.

aes-encryption aescrypt cryptography docopt pycrypto python

Last synced: 25 May 2026

https://github.com/ramesht007/secure_multi_party_computation

My notes for secure multi party computation. Still in progress.......................

cryptography secure-multi-party-computation

Last synced: 30 Jan 2026

https://github.com/clay-good/proxilion

Proxilion is the security layer for the agentic workforce. It turns managed AI agents into governed users by enforcing strict cryptographic boundaries on every API call to SaaS like Google Workspace, Salesforce, or Atlassian.

agentic-ai ai-governance ai-security audit-logging claude-security confused-deputy cryptography cybersecurity data-loss-prevention human-in-the-loop llm-security managed-agents oauth-proxy openai-security pic-protocol prompt-injection-defense reverse-proxy saas-security self-hosted zero-trust