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/simplito/linked-pm

A simple web application which encrypts your private messages (Java Script client-side encryption) and converts them into clickable links and QR-codes.

application cryptography qrcode web

Last synced: 04 Mar 2025

https://github.com/zgsolucoes/zg-data-guard

ZG Data Guard is a centralized tool designed to streamline and secure the management of multiple databases across various environments. It simplifies administration by providing a unified platform to handle database ecosystems, technologies, instances, predefined roles, databases, users, and access control. All secured through JWT-protected API.

access-management clusters-management cryptography database-management docker go go-chi godotenv golang golang-migrate jwt-auth keycloak postgresql rest-api swagger2 swaggo testify users-management

Last synced: 28 Jan 2026

https://github.com/projects-developer/github-major-projects-with-source-code

GitHub major projects Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

bcaproject btechproject computerscienceproject cryptography finalyear finalyearproject machine-learning malware malware-project mcaproject mtechproject project

Last synced: 18 Feb 2026

https://github.com/omarbaylee/vaultkey

vaultkey is an open-source Rust library for generating secure, customizable passwords. It supports various character sets and lengths, providing cryptographically secure random passwords for any use case. Contributions are welcome to improve and expand the library.

aeonvault capsulekey cryptography future-ai key-generation knowledge-preservation open-source password-manager random-password rust rust-crate rust-library time-capsule vaultkey

Last synced: 11 Jul 2025

https://github.com/pedroalbanese/gostsum

Parallel GOST R 34.11-94 CryptoPro hashsum command

cryptography gost gost94 hashsum

Last synced: 23 Jun 2026

https://github.com/karthickajan/cipherkit

77 free browser-based developer tools — AES, SHA, JWT, Base64, JSON, Regex, Diff, QR and more. 100% client-side. No login. No tracking.

aes base64 client-side cryptography developer-tools diff-checker hashing javascript json-formatter jwt-decoder no-tracking offline open-source privacy regex rsa utilities web-tools

Last synced: 30 Apr 2026

https://github.com/skyf0l/ncenc

Netcat wrapper to encrypt network traffic with openssl.

bash cryptography encryption nc netcat network network-encryption openssl pentest pentest-tool pentesting reverse-shell rsa

Last synced: 26 Apr 2026

https://github.com/hayr-hotoca/flutter_chacha20_poly1305

ChaCha20-Poly1305 encryption/decryption for Flutter. Native implementations make sure it has the fastest performance.

android chacha20 chacha20-poly1305 chacha20poly1305 cipher cipher-algorithms cross-platform cryptography cryptography-algorithms dart encryption encryption-algorithms flutter ios key

Last synced: 02 May 2026

https://github.com/constantin9845/trivium-encoder

Trivium stream cipher implementation with cryptographically secure IV and Key generator.

cryptography csprng trivium

Last synced: 31 Jul 2025

https://github.com/jimmygizmo/zerotools

Applications, tools and modules written in best-practice Python, Java, Javascript, C and Perl for personal projects, enterprise projects or education.

asyncio autobahn bookmark cryptography encryption ios java perl pexpect python recursive ruby swift tcl tk wamp

Last synced: 11 Apr 2026

https://github.com/azmisahin/azmisahin-software-cryptography-steganography-net

Crypto-Steganography: A condition in which the information contained in a readable data is not understood by the unwanted parties; Methods of converting a file, message, image, or video by hiding it in a file, message, image, or video.Crypto-Steganography: A condition in which the information contained in a readable data is not understood by the unwanted parties; Methods of converting a file, message, image, or video by hiding it in a file, message, image, or video.

audio bit byte char color cryptography cs decoder decoding encoder encryption int picture pixel steganography string studio text video visual

Last synced: 29 Mar 2025

https://github.com/benwoo1110/cryptography-gui

Simple visualisation for basic string cryptography algorithms

algorithms cryptography cryptography-gui pygame python3 string-cryptography-algorithms visualisation

Last synced: 31 Mar 2026

https://github.com/loneicewolf/cryptography

Encryption implemented in various languages. like AES and Serpent, more coming.

aes c cascade-encryption cipher cpp cryptography openssl rijndael serpent

Last synced: 08 Mar 2026

https://github.com/alhonaut/zkp-grpc-server

Chaum-Pederson Zero-Knowledge Proof in Rust with gRPC and Docker

cryptography grpc rust

Last synced: 03 May 2026

https://github.com/w3c/identity-web-impact

This document proposes an overview of Digital Identities on the Web and an analysis through different use cases of the systemic impact on both the market side and the human side, as well as the role that Web standardization may play in managing that impact

cryptography identity spice threat-modeling verifiable-credentials

Last synced: 11 Jul 2025

https://github.com/gusandrioli/small-aes

Simple text and PDF encrypter/hasher CLI application.

aes cryptography golang

Last synced: 15 Jan 2026

https://github.com/charlot-dedjinou/best-flag

Best Flag is an exciting project that will put your cryptographic and steganographic skills to the test. The aim is to discover a secret message hidden in the “best_flag” file, using different encryption algorithms.

cryptography express expressjs flag mongodb react reactjs steganography tailwind tailwindcss

Last synced: 11 Apr 2026

https://github.com/unclerus/regnupg

Python GnuPG wrapper

cryptography gnupg gpg python

Last synced: 03 Apr 2025

https://github.com/unikraft/lib-libhogweed

Port of libhogweed to Unikraft

cryptography library unikraft

Last synced: 20 Jun 2026

https://github.com/egorkhaklin/polaris-id

National identity-token reference implementation. Post-quantum signing, zero-knowledge defaults, compulsion-resistant by construction.

anti-coercion audit-log cryptography flask identity identity-management merkle-tree mfa plonky2 post-quantum-cryptography postgresql rust snark swarm-intelligence webauthn zero-knowledge-proofs

Last synced: 10 Jun 2026

https://github.com/mewmix/sm4-xts-openssl

openssl sm4-xts & aes-xts 256 implementations for testing

aes-256 c cryptography disk-encryption openssl sm4

Last synced: 07 Jun 2026

https://github.com/vishalshenoy2002/file-encrypter

Keep your files safe by encrypting it 🙂

cryptography encrpytion file-encryption file-encryption-python file-encryptor safe security

Last synced: 18 Jun 2026

https://github.com/rusq/gonss3

Subset of Mozilla NSS enough to decrypt firefox passwords

3des 3des-cbc asn1-der cryptography deciphering decryption firefox password pkcs5

Last synced: 31 Mar 2025

https://github.com/dylan-lang/hash-algorithms

Cryptographic hash functions for Dylan

cryptography dylan-lang hash hashing

Last synced: 03 Feb 2026

https://github.com/loneicewolf/ciphers-python

Cypher, Cipher, Cyphers, Ciphers, cryptography, encryption, obfuscation, enciphering, deciphering - in python3

alphabet cipher cryptography encryption jupyter-notebooks python substitution-cipher

Last synced: 23 Apr 2025

https://github.com/christoffercarlsson/autograph

The Autograph Protocol

authentication chacha20-poly1305 cryptography decentralization diffie-hellman ed25519 elliptic-curves freedom hkdf identity ownership privacy security verification x25519

Last synced: 18 Oct 2025

https://github.com/piotrpsz/gost

GOST algorithm implemented in Go

cryptography go gost

Last synced: 17 May 2025

https://github.com/crocs-muni/eacirc-utils

Utils for experiment creation and result postprocessing

automation cryptography randomness research-tool

Last synced: 31 Jan 2026

https://github.com/theduardomaciel/cryptosia-web

A platform for generating public and private keys that work in sync, ensuring simplified security of sensitive messages through RSA encryption.

c cryptography emscripten nextjs react rsa rsa-cryptography tailwindcss wasm webassembly

Last synced: 12 Apr 2026

https://github.com/lucabonamino/crypto-vdf

Cryptocurrency and Cryptographic blockchain Verifiadle Delay Functions project

cli cryptocurrency cryptography pietrzark-vdf python verifiable-delay-functions wesolowski-vdf

Last synced: 27 Dec 2025

https://github.com/rzubek/easy-cryptography

Easy, simple C# API for common cryptography operations. Wraps built-in .NET crypto libraries, but with simplified API using safe defaults. Single C# file, no extra dependencies.

crypto cryptography csharp csharp-library dotnet dotnet-core dotnet-standard dotnetcore encryption security

Last synced: 14 May 2026

https://github.com/r1b/cryptography

Self-study in cryptosystems

block-ciphers cryptography key-exchange-algorithms rust stream-ciphers

Last synced: 08 Apr 2025

https://github.com/ntdls/talkster

Secure chat instant messaging server and client, offering multi-layered peer-to-peer encryption.

communication cryptography privacy security

Last synced: 21 Apr 2026

https://github.com/buhman/cryptio

file-like interface for authenticated encryption

aes-gcm authenticated-encryption cryptography encryption-library

Last synced: 18 Aug 2025

https://github.com/b0oml/monoalphabetic-solver

Web interface for performing monoalphabetic substitution

cryptography substitution-cipher webapp

Last synced: 10 Feb 2026

https://github.com/8hantanu/cryp2o

Watermark based image encryption

cryptography dct rsa

Last synced: 11 Aug 2025

https://github.com/delthas/libsilence-java

Lightweight API for the Silence protocol

cryptography java-8 silence sms smssecure textsecure

Last synced: 06 Jun 2026

https://github.com/ajlearner46/post-quantum-cryptography-signature-scheme

Implementation of Post-quantum cryptography signature protocol

cryptography cryptography-algorithms post-quantum-algorithms post-quantum-cryptography post-quantum-signature pqcrypto python signature-scheme

Last synced: 06 Jan 2026

https://github.com/rahmatagungj/toke

TOKE (Two Original Key Encryption) is a security method through encryption of data in the form of numbers and characters, this system uses a mathematical algorithm that can be used to secure certain messages. This service can convert ordinary messages in human language and files into more secure data.

algorithms cryptography decryption encryption

Last synced: 25 Feb 2026

https://github.com/kareemmoneeam/fota

This repository hosts the Firmware Over-The-Air (FOTA) system developed as part of a graduation project at Cairo University. The FOTA system enables secure, efficient, remote updates for embedded systems in smart vehicles, enhancing functionality, safety, and user experience, with strong automotive cybersecurity measures.

aes-encryption bootloader cryptography django embedded embedded-c embedded-systems esp32 firmware firmware-over-the-air graduation-project hc05-module mobileapp secureboot stm32

Last synced: 31 Jan 2026

https://github.com/cupcakearmy/occulto

Isomorphic encryption library that works both in the browser and node.

aes crypto crypto-library cryptography easy-to-use hash high-level node node-crypto typescript

Last synced: 15 Apr 2025

https://github.com/lmriccardo/needham-schroeder-verification

Project for the Formal Methods In Software Development course at the University of "La Sapienza" in Master in Computer Science A.A. 2021/2022

cryptography murphi needham-schroeder nusmv-model-checker spin verification

Last synced: 23 Aug 2025

https://github.com/defucc/hashkeys

Reactive Noble cryptography for p2p identity

composable cryptography encryption js noble-curves signing vue

Last synced: 20 Jan 2026

https://github.com/thotypous/keccak-bsv

Bluespec SystemVerilog implementation of the Keccak primitive (SHA-3)

bluespec cryptography hardware-designs keccak sha3

Last synced: 19 Mar 2026

https://github.com/ishanoshada/spiral-cipher

A spiral cipher implementation for text encryption and decryption

cipher crypto cryptography encryption pypi python security spiral spiral-cipher

Last synced: 18 Feb 2026

https://github.com/uncomputable/tackling-bulletproofs

In-depth survey into what Bulletproofs are and how they work

cryptography learning mathematics pdf tutorial zero-knowledge-proof

Last synced: 19 Mar 2026

https://github.com/asc8384/simple-cryptography

Simple cryptographic implementation, including TinyJambu, Grain-128AEAD, Fridrich, etc.

crypto cryptography encryption tinyjambu

Last synced: 23 Aug 2025

https://github.com/robb-fr/cryptography-diffie-beepboop

2021 COM-401 course's at EPFL, coding homeworks. Sage kernel for Jupyter Notebook. Cryptography and Security.

capture-the-flag cryptography sagemath

Last synced: 06 Jun 2026

https://github.com/mtumilowicz/cryptography-hsm-workshop

Introduction into pkcs11 and integrations with hsm using softhsm.

cryptography cryptography-concepts cryptography-course cryptography-tools hardware-security-module hsm pkcs11 pkcs11-tool pkcs11interop-implement softhsm workshop workshop-materials

Last synced: 25 Feb 2026

https://github.com/raymondfx/uptechafrica

UpTechAfrica East Africa Blockchain Hackathon - Whistleblower Solution

blockchain cryptography whistleblowing

Last synced: 11 Mar 2025

https://github.com/marcode24/criptografia-rsa

🔐 This is a cryptography project testing, using RSA criptography

cryptography css html html-css-javascript html5-css3 javascript multer nodejs rsa rsa-cryptography

Last synced: 11 Apr 2026

https://github.com/erhant/cryptopals-go

Cryptopals cryptography challenges in Go.

cryptography cryptopals ctf go

Last synced: 07 Jun 2026

https://github.com/skyf0l/discrete-logarithm

Fast discrete logarithm solver in Rust

cryptography discrete-logarithm number-theory

Last synced: 11 Oct 2025

https://github.com/agu3rra/pykeys

Securely store and use your API keys

api coding cryptography key secure token

Last synced: 16 Jan 2026

https://github.com/eqoty-labs/kryptools

Kotlin multiplatorm crypto tools: AES-SIV, Axlsign, AES256-GCM, Bech32, Secp256k1

crypto cryptography kotlin kotlin-android kotlin-js kotlin-jvm kotlin-library kotlin-multiplatform kotlin-native

Last synced: 02 Feb 2026

https://github.com/thomasdesr/minisign-action

Github action to sign and verify minisign/signify signatures

crypto cryptography github-actions gpg minisign pgp signify

Last synced: 05 Jan 2026

https://github.com/shreyansh26/secure-voting-application

Secure Voting Protocols using RSA

cryptography rsa secure-voting voting-system

Last synced: 22 Jun 2026

https://github.com/helcsnewsxd/cbmc-analysis-report

Technical report on CBMC (C Bounded Model Checker) - Software Engineering II course project - Computer Science @ FAMAF (UNC)

bounded-model-checking cbmc cryptography ctf-writeup famaf formal-verification software-engineering static-analysis university-project

Last synced: 02 Jul 2025

https://github.com/darconeous/msecret-rust

Tool for deriving various types of keys from known symmetric secrets.

command-line-tool cryptography ecc-cryptography key-derivation passphrase rsa-cryptography rust secret-sharing

Last synced: 19 Jan 2026

https://github.com/gotz1480/bitcoin-cryptography-ecc

Study of bitcoin elliptic curve cryptography (ECC)

bitcoin cryptography ecc-cryptography elliptic-curve-cryptography

Last synced: 07 Apr 2025

https://github.com/gotz1480/cryptography

Cryptography projects and algorithms in Python

cryptography cryptography-algorithms cryptography-library python python-cryptography python3

Last synced: 07 Apr 2025

https://github.com/dev-sire/algopython

This repository serves as a comprehensive collection of Python code related to data structures, algorithms, and cryptography. It includes solutions to daily LeetCode problems and various cryptographic implementations

cryptography dsa-algorithm leetcode-python python3

Last synced: 10 Apr 2025

https://github.com/saahen-sriyan-mishra/camouflage-shield

A full stack windows form application for sensitive image storing in encrypted format using symmetric key cryptography, and user data storing/securing using hash algorithms.

3des-encryption aes-encryption base64-encoding cryptography csharp cybersecurity des-encryption-decryption encryption hashing-passwords image-processing md5-hash rc2-encryption rijndael-algorithm sha1-hash sha256-hash sha384-hash sha512-hash windows-form-application

Last synced: 07 May 2025

https://github.com/amirhosein2004/secure-token

package secure-token

cryptography pypi-packages python secure-token

Last synced: 13 Apr 2026

https://github.com/tcfw/ocs

An Open Cryptography Standard

certificate certificates crypto cryptography go golang ipfs pki public-crypto security tls

Last synced: 29 Apr 2026

https://github.com/angelobattaglia/gematro

A cryptographic calculator (Written by Saun Virroco)

cryptography steganography

Last synced: 08 Jun 2026

https://github.com/i-umairkhan/ecdsa_node

Transactions via ECDSA cryptography algorithm.

cryptography ecdsa-cryptography express javascript nodejs react

Last synced: 14 Apr 2026

https://github.com/demining/private-key-debug

Private key Debug: Incorrect generation of private keys, system vulnerabilities and errors in calculating the order of the elliptic curve secp256k1 threats to the Bitcoin ecosystem

bitcoin bitcoin-wallet crypto cryptocurrency cryptography ecc elliptic-curve-cryptography privatekey secp256k1 vulnerability

Last synced: 01 May 2026

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

Variable-length Expansion Pass function. ( i.e. short password to long hashed password )

algorithms cryptography expansion hash no-std password

Last synced: 10 Jun 2025

https://github.com/mobilecoinfoundation/rand

A platform abstraction layer providing a cryptographic RNG

cryptography no-std random rng

Last synced: 26 Jul 2025

https://github.com/trailofbits/rfc8785.py

A pure-Python implementation of RFC8785 (JSON Canonicalization Scheme)

canonicalization cryptography json python serialization

Last synced: 15 Apr 2025

https://github.com/alvarogarciapiz/pycipherhub

Conjunto de cifradores desarrollados en Python

cifrador criptografia-basica cryptography cypher python

Last synced: 15 Mar 2025

https://github.com/pmuens/time-lock-puzzle

Time-Lock Puzzle schemes implemented in Go and compiled to WebAssembly

cryptography encryption homomorphic-encryption homomorphic-time-lock-puzzle time-lock time-lock-puzzle

Last synced: 15 May 2025

https://github.com/dinochiesa/apigee-custompolicy-rsacrypto

This is a custom Apigee policy, implemented in Java, that performs RSA Encryption and Decryption of data or message payloads, or RSA signing of data or message payloads, or verification of such signatures.

apigee cryptography rsa

Last synced: 10 Jun 2025

https://github.com/sudiptab2100/cryptographicalgorithms

Implementation of Cryptographic Algorithms of course Modern Cryptography(CSC049P1M) offered in IIT Jammu.

aes-encryption affine-cipher ceaser-cipher cryptoanalysis cryptoanalysis-algorithms cryptography des-encryption diffie-hellman-key grain-stream-cipher hill-cipher rc4-algorithm rc4-cipher rc4-encryption rsa-cryptography rsa-encryption substitution-cipher vigenere-cipher

Last synced: 07 Jul 2025

https://github.com/meyiapir/cryptograph

This is a simple console application for encrypting files using AES, written in Python.

aes aes-encryption cryptography file-encryption python python3

Last synced: 09 Jun 2026

https://github.com/alaouimehdi1995/encryption-decryption-algorithm

Algorithm that encrypt and decrypt data (text) with algorithm based on random keys

crypt cryptography decoder decoding decrypt decrypt-data decryption encoding encrypted encrypted-data encryption

Last synced: 06 Mar 2025

https://github.com/anuja-rahul/python-datavault

Encrypt and safeguard your valuable data with this python encryption/decryption module.

aes-256 cbc-aes-encryption cryptography fernet-cryptography oops-in-python

Last synced: 19 Jun 2026

https://github.com/qtumproject/qtool

Qtool is a cli command, a JSON RPC api and a golang package that provides crypto functionalities specific for qtum blockchain

bitcoin cryptography ecdsa qtum

Last synced: 28 Apr 2025

https://github.com/newyaroslav/crypto-json

C ++ library for JSON encryption with COMMENTS

cryptography json json-parser strip-json-comments

Last synced: 15 May 2026

https://github.com/davidbuchanan314/roll13

an (unfinished) TLSv1.3 client in pure python, hand-rolled from first principles.

aes aes-gcm cryptography hmac hmac-sha256 python python3 secp256r1 sha256 tls tls13

Last synced: 22 Aug 2025

https://github.com/loneicewolf/compact-caesar-cipher

ciphers classical classical-ciphers crypto cryptography loneicewolf

Last synced: 23 Jan 2026

https://github.com/miguelzacca/vigenere-encoder

Vigenere cipher encoder/decoder. (npm package)

cipher crypto cryptography decode encode encoder npm npm-module npm-package package vigenere vigenere-cipher

Last synced: 15 Feb 2026

https://github.com/yashraj-n/legitly

A simple PDF Signing and verifying website. Made in Next.js

authentication cryptography pdf verification web3

Last synced: 13 Nov 2025

https://github.com/tankerhq/sdk-ruby

Tanker client-side encryption SDK for Ruby

cryptography encryption end-to-end privacy ruby sdk security tanker

Last synced: 09 Apr 2025

https://github.com/ph4r05/zipstream

ZIP archive tampering on the fly library

cryptography java man-in-the-middle research tampering zip-stream

Last synced: 15 Mar 2025

https://github.com/schultz-is/go-threefish

An implementation of the Threefish block cipher entirely in go with no external dependencies.

block-cipher block-ciphers crypto cryptography threefish

Last synced: 15 Apr 2026

https://github.com/ngirimana/rsa

RSA algorithm is asymmetric cryptography algorithm. Asymmetric actually means that it works on two different keys i.e. Public Key and Private Key. As the name describes that the Public Key is given to everyone and Private key is kept private.

cryptography css3 html5 network-security rsa

Last synced: 07 May 2026

https://github.com/M3DZIK/rust-crypto-utils

Cryptography Utils for Rust

crypto crypto-library cryptography hash hmac jsonwebtoken jwt rust rust-crate rust-lang rust-language rustlang

Last synced: 13 May 2025

https://github.com/clach04/jenc-py

Python package for jenc/Markor decryption/encryption

aes aes-256 aes-encryption aes-gcm-encryption aes256-gcm cryptography decryption encryption encryption-decryption gcm java jenc markor pbkdf2withhmacsha512 python

Last synced: 09 Feb 2026

https://github.com/susumuota/nostrain

Nostr client library with no strain.

client cryptography nodejs nostr protocol relay sns social-media social-network typescript vite

Last synced: 08 May 2026

https://github.com/jasondrawdy/autoarchiver

An advanced and flexible auto-archiving tool that allows the archiving of both individual files and entire directories using set intervals.

application archiving automation backup cryptography dotnet encoding security utilities windows

Last synced: 08 May 2026

https://github.com/amaitou/sectools

Welcome to the SecTools repository, a curated collection of penetration testing tools designed exclusively for educational purposes. This repository aims to provide a responsible and ethical environment for learning penetration testing techniques within legal boundaries.

cryptography cybersecurity hashing malware-development penetration-testing-tools python3 reverse-shell