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: 2026-06-30 00:07:03 UTC
JSON Representation

https://github.com/lumarans30/astralsafeclient

.NET MAUI app that encrypts and decrypts an exe file.

aes-128 anti-piracy client-side cryptography http-requests maui-app

Last synced: 18 Jun 2026

https://github.com/hicsail/oracles

Useful zero-knowledge (ZK) problems constructed from real world scenarios.

cryptography zero-knowledge-proofs

Last synced: 03 Jun 2026

https://github.com/yodalightsabr/2password

2Password: A cryptography experiment

aes-256 cryptography experimental password-manager

Last synced: 10 Feb 2026

https://github.com/arec1b0/crypto-comparison

A comprehensive project comparing classical and quantum cryptography. Includes detailed explanations, code examples, and tests for various cryptographic algorithms and protocols.

aes bb84 classical-cryptography cryptography ecc grovers-algorithm qkd quantum-computing quantum-cryptography quantum-teleportation rsa

Last synced: 27 Feb 2026

https://github.com/tynes/libsigner

manage watch only bitcoin wallets with bcoin

bcoin bitcoin cryptography ledger nodejs trezor

Last synced: 08 May 2026

https://github.com/ornella-gigante/cryptosafe

A simple Java application for encrypting and decrypting messages and files using DES and RSA algorithms, featuring a user-friendly menu interface. Perfect for learning about cryptography and secure file handling.

assymetric-encryption assymetric-key-cryptography asymmetric-cryptography cipher-algorithms cryptography decipher des java java-8 rsa-cryptography

Last synced: 13 Feb 2026

https://github.com/timebertt/grypto

Understanding cryptographic algorithms by implementing them in Go :mortar_board:

cryptography golang learning-by-doing learning-exercise

Last synced: 08 Jun 2026

https://github.com/tangle-network/masp-protocol

Multi-asset shielded pool extending protocol-solidity contract system

cryptography privacy zero-knowledge

Last synced: 31 Jan 2026

https://github.com/thenaubit/crypto-password-generator

🦄 A cryptographically secure password generator!

cryptography emotionjs mantine-ui nextjs password-generator typescript

Last synced: 20 Apr 2026

https://github.com/karakun/encrypted-filechannel

Transparent encryption for java.nio.channels.FileChannel

crypto cryptography java nio security tink

Last synced: 05 Mar 2026

https://gitlab.com/hackancuba/blake2signer

Using BLAKE in keyed hashing mode to sign and verify data.

blake2 blake3 cryptography hashlib hmac python

Last synced: 15 Feb 2026

https://github.com/sgiath/secp256k1

Elixir wrapper for Bitcoin Core secp256k1 library

bitcoin cryptography elixir secp256k1

Last synced: 01 Feb 2026

https://github.com/lucadibello/virtualsafe

🔒 Crypt your directories and make your files completely unreadable!

cryptography fernet privacy-tools python security security-tool

Last synced: 06 Jun 2026

https://github.com/adamo08/encryption-decryption

This repository contains implementations of various encryption and decryption algorithms in Python. The goal is to provide simple and easy-to-understand code for educational and practical purposes.

affine-cipher algorithms caesar-cipher cryptography decryption des-cipher encryption hill-cipher python security vigenere-cipher

Last synced: 11 Feb 2026

https://github.com/primefactor-io/xchacha20-poly1305

100% RFC compliant implementations of ChaCha20-Poly1305 and XChaCha20-Poly1305

chacha20 chacha20-poly1305 cryptography cryptography-algorithms poly1305

Last synced: 01 Mar 2026

https://github.com/pieroboseta/piero-ende-coder

A powerful encryption and decryption tool that combines the Vigenère cipher, XOR encryption, and Base64 encoding to secure messages. This tool allows users to encode and decode messages using a secret key, ensuring an extra layer of security.

algorithm base64 cipher cpp cryptography data-conversion data-encoding decoder decryption encoder encryption hashing string-manipulation text-processing

Last synced: 26 Feb 2026

https://github.com/virgilsecurity/virgil-ratchet-kotlin

Virgil Security Ratchet SDK provides an implementation of the Double Ratchet algorithm, which is used by parties to exchange encrypted messages based on a shared secret key.

cryptography doubleratchet encryption perfect-forward-secrecy pfs ratchet

Last synced: 13 Feb 2026

https://github.com/vishesh-gupta/cryptology

Container for multiple Cryptography algorithms, ciphers and techniques

cryptography hashing-algorithm rsa-key-encryption secure-hash-algorithm

Last synced: 09 Feb 2026

https://github.com/aarambh-darshan/mini-blockchain

A robust, full-stack blockchain engine built in Rust. Features a custom VM for smart contracts with real gas economics, Proof-of-Work consensus, UTXO transactions, multisig wallets, and a real-time SvelteKit block explorer.

blockchain cryptography defi distributed-systems p2p proof-of-work rust smart-contracts sveltekit utxo vm web3

Last synced: 10 Feb 2026

https://github.com/powershelllibrary/crypto.aes

PowerShell module for cryptography (RSA)

aes aes-encryption aes-gcm cryptography decryption encryption powershell powershell-module

Last synced: 04 Mar 2026

https://github.com/ideal-lab5/etf

"Encryption to the Future" consensus and node

blockchain cryptography substrate timelock-encryption

Last synced: 17 Mar 2026

https://github.com/21-dot-dev/swift-bitcoinkernel

Swift package for running a Bitcoin node

bitcoin bitcoin-core bitcoin-node bitcoind blockchain c-plus-plus consensus consensus-validation cryptocurrency cryptography full-node json-rpc libbitcoinkernel p2p regtest spm swift swift-library swift-package-manager swift6

Last synced: 23 Jun 2026

https://github.com/lyang/gpg-utils

Simple Wrapper for shelling out to gpg

cryptography gnupg gpg java processbuilder

Last synced: 01 Feb 2026

https://github.com/virgilsecurity/virgil-messenger-x

A simple E2EE chat for iOS which uses Virgil Security services.

chat cryptography demo encryption end-to-end-encryption ios ios-app messenger

Last synced: 19 Jun 2026

https://github.com/youben11/psi

Playing with different Private Set Intersection protocols

cryptography privacy-preserving psi

Last synced: 25 Apr 2026

https://github.com/xu-cheng/pbc-bindings

:electric_plug: Bindings for Pairing-Based Cryptography (libpbc)

bindings cplusplus cplusplus-14 cryptography pbc python ruby swig

Last synced: 18 Apr 2026

https://github.com/ishivanshgoel/securechat

End-to-end encrypted chat application using RSA algorithm. Backend: https://github.com/ishivanshgoel/securechat-app/

bootstrap cryptography css html javascript rsa-cryptography

Last synced: 08 May 2026

https://github.com/iamnotstatic/wallet-manager

This is for managing crypto addresses and generation

bitcoin blockchain cryptocurrency cryptography ethereum

Last synced: 14 Feb 2026

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/openmined/daa.js

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

cryptography identity iot javascript

Last synced: 02 Jul 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/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/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/antonio-hickey/veil

Multi purpose cryptography tool

crypto cryptography typescipt

Last synced: 05 Oct 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/w3c/vc-di-quantum-resistant

Data Integrity Quantum Safe Cryptography Suite

cryptography data-integrity quantum vc verifiable-credentials w3c

Last synced: 29 May 2026

https://github.com/kiooku/cryptography-notebook

Cryptography Notebook is a repository containing some of the cryptographic implementations I have done for learning purposes.

assymetric-encryption commitment-schemes cryptography digital-signature double-ratchet-algorithm e2ee ggh hkdf hmac identification-scheme one-time-pad post-quantum-cryptography public-key-cryptography rsa signal x3dh zero-knowledge-proof

Last synced: 23 Apr 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/delagen/cadesplugin

CryptoPro EDS Browser plug-in typescript implementation

cadesplugin cryptography cryptopro gost3411-2012

Last synced: 16 Mar 2026

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

Module python de chiffrement avec perte

cryptography hashing

Last synced: 18 Jan 2026

https://github.com/juanbono/criptografia

Criptografia - UTN FRBA 2017

assignment criptografia-utn cryptography mugi

Last synced: 26 Mar 2025

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/jsign/zig-eth-secp256k1

A Zig libsecp256k1 wrapper with bells and whistles for Ethereum

cryptography ethereum secp256k1 zig

Last synced: 18 Mar 2025

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

about cryptography

cryptography graphein hidden secret study to-write

Last synced: 23 Jan 2026

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/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/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/geeklearningio/gl-ionic-secure-file-storage

A service using two encryption plugins to encrypt data on iOS and Android

cordova cryptography ionic security storage

Last synced: 28 Apr 2025

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/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/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/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/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/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/johnkommas/barcodereader

Barcode Generator From Entersoft SQL

barcode-generator bolt bot cryptography fastapi label-tags labels odbc pandas pillow price-tags pyodbc python slack slackbolt slackbot sqllite3 uvicorn

Last synced: 23 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/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

Last synced: 30 May 2026

https://github.com/nccgroup/pasta-curves

Provides the Pasta curves: Pallas, Vesta and their field elements Fp and Fq.

cryptography elliptic-curve-cryptography elliptic-curves

Last synced: 26 Apr 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/dajiaji/mkkey

Application-layer Key Generator supporting JWK (JSON Web Key) and PASERK (Platform-Agnostic Serialized Keys).

cryptography jose jwk jwt paserk paseto python security

Last synced: 14 Jan 2026

https://github.com/cflems/pk

Penguin's Kiss: Asynchronous Command and Control software + multi-client + encrypted + terminal emulation

c2 command-and-control cryptography penguins-kiss pk remote-shell

Last synced: 10 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/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/oversys/pypass

A password manager written in Python. Data is encrypted using AES-256-GCM and the key is derived using PBKDF2-HMAC-SHA512.

aes-256 aes-256-gcm aes-encryption aes-gcm aes256-gcm cryptography password-manager pbkdf2 pbkdf2withhmacsha512 python sha-512 sha512

Last synced: 30 Apr 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/hmxustin/pybchain

Реализация блокчейна, работающего по протоколу PoW

blockchain cryptocurrency cryptography equicoin

Last synced: 26 Jan 2026

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/makischristou/crabguard

🦀🔒 crabguard: A cli tool for end-to-end encryption for s3 storage

aes backblaze-b2 cli cloud cloud-storage crabguard cryptography encryption rclone rust rustlang s3

Last synced: 13 Mar 2026

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/aegis-aead/aegis-jasmin

An implementation of AEGIS in the Jasmin programming language.

aead aegis aegis-128x2 aegis-256x2 aegis128l aegis256 cipher cryptography jasmin

Last synced: 11 Mar 2026

https://github.com/vanhakobyan/rngcryptoservicepassgen

:barber:RNGCryptoService:barber: password generator:barber:

cryptography password password-generator rng service

Last synced: 13 Jun 2025

https://github.com/dorssel/dotnet-aes-extra

.NET Standard 2.0 implementation of AES-CTR, AES-CMAC, SIV-AES (aka AES-SIV), AES-CMAC-PRF-128 (aka PRF_AES128_CMAC), and PBKDF2-AES-CMAC-PRF-128.

aes aes-cmac aes-cmac-prf-128 aes-cmac-siv aes-ctr aes-ctr-mode aes-siv cmac cryptography dotnet dotnet-standard pbkdf2-aes-cmac-prf-128 siv siv-aes siv-mode

Last synced: 09 Apr 2025

https://github.com/makemake-kbo/macrypt

Macrypt is a research blockchain built completely from scratch.

blockchain crypto cryptocurrency cryptography csharp dotnet-cli proof-of-work

Last synced: 13 Jul 2025

https://github.com/lumarans30/astralsafeserver

AstralSafe server with Node.js

aes cryptography expressjs nodejs quantum-randomness

Last synced: 05 May 2026

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/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/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.

cipher code cryptography csharp dotnet encryption future-proof green-field kusumi library package post-quantum pqc quantum-resistant quantum-safe streaming symmetric

Last synced: 06 Feb 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/apogiatzis/powsolver

A proof of work puzzle solver for CTF challenges

challenge crypto cryptography ctf hashing pow proofofwork python solver

Last synced: 30 Aug 2025

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/jedisct1/as-crypto

api assemblyscript bindings crypto cryptography wasi wasm webassembly

Last synced: 09 May 2026

https://github.com/zeyadetman/image-textsteganography

🖼 An image steganography by converting the image into text of pixels and use the LSB to hide the ciphered text that encrypted by The Caesar cipher Algorithm (Cryptography). The project decrypt the image by loading it, converting the pixels’ digits and break the LSB.

aes caesar-cipher cipher-algorithms counteributors cryptography cs-projects decryption encryption image-steganography

Last synced: 27 Sep 2025

https://github.com/rarestype/swift-cryptography

don’t build boringssl from source

autosync cryptography swift swift-server

Last synced: 28 May 2026

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