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/namecoin/certinject

Inject certificates into Windows CryptoAPI trust store, with EKU and name constraints.

certificates cryptoapi cryptography hacktoberfest name-constraints privacy security tls windows x509

Last synced: 27 Jan 2026

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/cryptpad/blueprints

CryptPad research & development repository

algorithms cryptography cryptpad diagrams research

Last synced: 01 Mar 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/leo-aa88/bitcoin-cryptography-ecc

Study of bitcoin elliptic curve cryptography (ECC)

bitcoin cryptography ecc-cryptography elliptic-curve-cryptography

Last synced: 10 May 2026

https://github.com/cosmian/cloudproof_flutter

The Flutter API library to Cosmian Cloudproof Encryption

android cloud cloudproof cryptography dart flutter ios

Last synced: 01 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/loneicewolf/compact-caesar-cipher

ciphers classical classical-ciphers crypto cryptography loneicewolf

Last synced: 23 Jan 2026

https://github.com/rpj/poo-attest

Proof-of-Ownership attestation tool via commitment schemes

commitment-schemes cryptography ownership

Last synced: 29 Mar 2025

https://github.com/danieltoader/php-crypttor

A simple php library to deal with encrypting and decrypting strings using OpenSSL or MCrypt

crypt cryptography decrypt encrypt mcrypt openssl php-crypt php-library

Last synced: 01 Sep 2025

https://github.com/sorah/xaes_gcm

Ruby implementation of XAES-256-GCM, an extended-nonce AEAD built on AES-256-GCM

cryptography ruby xaes-256-gcm

Last synced: 28 May 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/dineshssdn-867/cryptography

Although there are different methods to encrypt and decrypt messages, we'll focus on a linear algebra-based cipher, the Hill cipher, which uses a matrix as a cipher to encode a message or an image, and it's extremely difficult to break when a large matrix is used.

colab-notebook cryptography hill-cipher linear-algebra matrix-multiplication

Last synced: 26 Oct 2025

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/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/emperororokusaki/shai

A cryptography library focused on simplicity, performance, and rock-solid security

cryptography

Last synced: 12 Jun 2025

https://github.com/ishan-surana/federanet

Federated Multimodal Cyberattack classification model on social media messages (utilizing blockchain and quantum key cryptography). Blockchain server at https://cyberattack-blockchain.onrender.com/. Model interaction link below.

bb84-protocol blockchain convolutional-neural-networks cryptography federated-learning flask html-css-js information-security machine-learning multimodality natural-language-processing proof-of-authority streamlit zero-knowledge-proof

Last synced: 10 May 2026

https://github.com/jasonqsy/serpent

Serpent cipher in the AES contest.

aes-cipher cryptography

Last synced: 25 May 2026

https://github.com/mk-fg/ca-certificates-whitelist-filter

Tool to filter system-wide trusted Web PKI TLS Certificate Authorities in linux distros on a whitelist-basis

certificates cryptography linux python security sysadmin tls tool trust web-pki x509

Last synced: 10 May 2026

https://github.com/ableinc/polysecrets

A completely randomized order of secrets; built with security in mind.

application-security cryptography encryption jwt jwt-token password password-generator polysecrets secrets security security-tools server-security signing signing-certificates

Last synced: 29 Mar 2025

https://github.com/lucianoscarpaci/atmega328p

🔒 Embedded Crypto Projects with Arduino board.

aes arduino arduino-projects atmega328p cryptography haskell nix

Last synced: 10 May 2026

https://github.com/pactus-project/python-sdk

Python-SDK for Pactus Blockchain

blockchain bls bls12-381 cryptography ed25519 grpc pactus python rpc sdk web3

Last synced: 15 Apr 2025

https://github.com/prongbang/aes_ctr

AES CTR - Counter Flutter plugin.

aes-ctr aes-ctr-mode cryptography decryption encryption flutter

Last synced: 04 Jan 2026

https://github.com/sourish-kanna/side-projects

These are my other side projects which are not that big for a dedicated repository

ascii cesar-cipher cesar-cypher cryptography encryption java python side-project

Last synced: 11 May 2026

https://github.com/victor-0x29a/basethor

Simple cryptography based in to Base64.

cryptography java

Last synced: 16 Mar 2025

https://github.com/pranjalgautam11/data-protection-using-steganography-and-cryptography

This menu driven program ensure the steganography and cryptography of the files.

cryptography encryption-decryption steganography twofish

Last synced: 12 May 2026

https://github.com/projects-developer/steganography-project

Steganography is the practice of hiding secret information within a non-secret message, image, or other medium. Steganography Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

btechprojects computerscienceprojects cryptography cybersecurity dataencryption datahiding digitalforensics informationsecurity mtechprojects secretcommunication steganalysis steganography steganography-project

Last synced: 06 Feb 2026

https://github.com/enjeck/cryptoalgovisualizer

Visualizations of various cryptography algorithms

algorithms cryptography visualization

Last synced: 24 Oct 2025

https://github.com/guppster/ark-nim

A Nim library simplifying connection to the ARK blockchain

blockchain cryptography nim

Last synced: 25 May 2026

https://github.com/netesf13d/crypto-stuff

Python implementation of some common cryptographic primitives

aes cryptography keccak

Last synced: 14 May 2026

https://github.com/k4yt3x/multihasher

cryptography hash python

Last synced: 30 May 2026

https://github.com/nethermindeth/eth-pairings-bindings

C# bindings for the eth_pairings library

cryptography eip-1962 pairings

Last synced: 12 Jul 2025

https://github.com/onlycodergod/crypto-beta

🛡learn and watch how crypto work in Go

const crypto cryptography golang-library hash key privatekey sha

Last synced: 12 Jan 2026

https://github.com/hirotoshioi/cryptopals-in-js

Working on http://cryptopals.com/ challenges

cryptography cryptopals javascript

Last synced: 16 Mar 2025

https://github.com/ilyakotsar/e2ee-js

End-to-End Encrypted Chat You Can Trust

chat cryptography diffie-hellman-algorithm encryption end-to-end-encryption messenger

Last synced: 18 Mar 2025

https://github.com/qalle2/md5-algo

MD5 implementation in Python

command-line cryptography md5 python3

Last synced: 28 May 2026

https://github.com/umstek/magnum-cipher

Proof-of-concept Product Cipher using cryptography classics (CS3052 Computer Security - Assignment)

cryptography encryption-algorithm product-cipher substitution-permutation-network

Last synced: 11 Jun 2025

https://github.com/outspace/vigdec

vigdec aka heartbreaker – tool that breaks Vigenère cipher without knowing the key.

breaker cryptography decryption decryptor substitution-cipher vigenere vigenere-cipher vigenere-cipher-algorithm vigenere-decoder

Last synced: 25 Oct 2025

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

satunna is a WIP reproducible pseudo-random code execution hashing algorithm

crypto cryptography hash hashing-algorithm salt salting virtual-machine

Last synced: 03 Jul 2025

https://github.com/kestra-io/plugin-crypto

cryptography kestra pgp plugin

Last synced: 25 Oct 2025

https://github.com/randombit/botan-ocaml

OCaml binding for botan crypto library

botan cryptography ocaml

Last synced: 25 Mar 2025

https://github.com/alexruzin/cryptog

A cryptographic wrapper library for the Go programming language

aes-encryption cryptography rsa-encryption

Last synced: 21 Nov 2025

https://github.com/trashhalo/saltpack

node wrapper of saltpack library

cryptography keybase saltpack

Last synced: 11 Jan 2026

https://github.com/ardatetikbey/ruby-kriptografi-101

Ruby programlama dilinde şifreleme hakkında doküman

cryptography ruby sifreleme

Last synced: 06 Jul 2025

https://github.com/simplyyan/w7dth

A Go library for easy, fast, lightweight and effective encryption.

criptografia cryptography cryptography-algorithms cryptography-library cryptography-tools decryption encryption framework go golang golang-library lib libraries library w7dth

Last synced: 01 Apr 2025

https://github.com/iboudhaine/rsa-encryption-and-in-practice

Implementation and exploration of RSA encryption, including its security properties, practical applications, and real-world use cases. A class project to learn and experiment with cryptographic principles

cryptographic-algorithms cryptography cryptography-project encryption python rsa secure-communication security

Last synced: 25 Oct 2025

https://github.com/dianpermana/cryptography

Cryptography: Encryption and Decryption as part of Security Test ( JavaScript + Groovy + .Jar File )

aes-encryption-decryption base64-encoding comp128 crc-algorithms crypto cryptography des-encryption-decryption hash hmac jmeter jwt rc4-algorithm smartcard

Last synced: 24 Mar 2025

https://github.com/mayank-02/simplified-des

Implementation of a simplified version of the DES algorithm

cryptography data-encryption-standard educational python simplified-data-encryption-standard simplified-des

Last synced: 16 Mar 2025

https://github.com/ppad-tech/sha256

Pure Haskell SHA-256, HMAC-SHA256

cryptography hashing haskell sha2 sha256

Last synced: 03 Jul 2025

https://github.com/cebem1nt/keeper

Keeper is a python password manager with git synchronization between multiple devices.

argparse cryptography encryption fernet-cryptography password-generator password-manager password-store python3 terminal-based terminal-tool termux

Last synced: 03 Feb 2026

https://github.com/abstractionslab/c5dec

C5-DEC (Common Criteria for Cybersecurity, Cryptography, Clouds – Design, Evaluation and Certification) part of the CyFORT project: a suite of methods and CAD tools dealing with the creation and evaluation of secure IT systems according to the CC standards, capturing SSDLC, V&V, and our cyber-physical system security assessment method

asciimatics bootstrap cad common-criteria cryptography cybersecurity devsecops doorstop flask git openproject pandoc project-management python3 quarto resource-management secure-software ssdlc system-security-risk-assessment threat-modelling

Last synced: 06 Jan 2026

https://github.com/opendream/vanityssh-rust

VanitySSH-Rust is a Rust-based project designed to generate SSH keys with customizable prefixes or patterns. It emphasizes performance and security, leveraging Rust's strengths for efficient cryptographic operations and minimal resource usage.

cryptography key-generation rust ssh vanity-key

Last synced: 16 Jan 2026

https://github.com/rafael-santiago/zacarias

Password manager with kernel mode powers (FreeBSD, Windows and Linux)

aes-encryption argon2 crypto cryptography cypherpunks databaseless device-driver freebsd gcm infosec kernel-module linux minimalistic out-of-the-box password-generator password-manager privacy-tools strong-cryptography suckless windows

Last synced: 06 May 2026

https://github.com/harsh-ps-2003/haikyu

A Bitcoin miner simulation

bitcoin cryptography sqlite

Last synced: 25 Feb 2026

https://github.com/retr0kr0dy/ghostschat

Chat and file transfer securely, 🛡️ embrace anonymity, and unleash your inner cyber ninja! 🥷💻💾

aes annonymized chat coding cryptography development file-transfer python rsa secured-communication security

Last synced: 16 Jun 2026

https://github.com/emrekybs/samurai

Samurai is a lightening fast CPU friendly Hash Cracker

cryptography hash hashcrack hashcracker hashcracking md5 md5-hash

Last synced: 04 Jul 2025

https://github.com/umitkrkmz/chaotic_audio_steganography

Official Python implementation of "Secure Audio Steganography using Vectorized LSB and Chaos-Based Encryption" (DOI: 10.64470/elene.2025.12).

audio-processing chaos-theory chaotic-maps cryptography image-encryption lsb-steganography pyside6 python research-paper steganography

Last synced: 13 Jan 2026

https://github.com/phayes/decryptpem

Decrypts encrypted PEM files and blocks. Provides (optional) TTY prompt for input for password.

crypto cryptography decrypt dek golang password pem

Last synced: 24 Jan 2026

https://github.com/arkorty/rustcm-cli

UTF-8 Text Cipher using XChaCha20-Poly1305

chacha20-poly1305 cli cryptography rust

Last synced: 24 Jan 2026

https://github.com/insipx/rsa

RSA Algorithm Implemented in Rust

crypto-class cryptography demonstration example rsa university university-assignment

Last synced: 15 May 2025

https://github.com/alvarogzp/poodle-challenge

Cryptographic challenge

challenge cryptography man-in-the-middle mitm poodle python ssl-handshake sslv3

Last synced: 13 Jun 2026

https://github.com/magical/keccak

The Keccak hash function (SHA-3)

cryptography

Last synced: 10 Jan 2026

https://github.com/jenson073/factorization_algorithms

This project was designed as a simple exploration of RSA algorithm vulnerabilities, particularly focusing on the factorization problem. It's an excellent example of how web technologies can be applied to explore and demonstrate cryptographic concepts.

cryptography factorization information-security rsa

Last synced: 14 Mar 2025

https://github.com/spectre7651/crypta

Reasonably Good Encryption and Decryption Software (Python 3)

cryptography cybersecurity encryption python3

Last synced: 05 Jun 2026

https://github.com/umstek/enigma

A generalized software model of the Enigma electro-mechanical rotor cipher machines used by Germans in WWII.

cryptography enigma visual-basic world-war2

Last synced: 30 Jan 2026

https://github.com/samuel-lucas6/covertpadding

An implementation of the Covert Encryption randomised padding scheme.

crypto cryptography encryption padding purb

Last synced: 27 Mar 2025

https://github.com/mohamed/pysss

A Python implementation of Shamir's secret sharing algorithm

computer-security cryptography

Last synced: 14 Jan 2026

https://github.com/harshil748/pylockv2

PyLockv2 is a secure password manager application built using Python and Tkinter. It allows users to store and manage their passwords securely, with features such as password encryption, email verification, and password reset using a special sentence.

cryptography cybersecurity hashing-passwords python3 smtp

Last synced: 25 Feb 2026

https://github.com/fa7ad/bad-ciphers

A collection of bad ciphers

cryptography hacktoberfest hacktoberfest2023

Last synced: 21 Jan 2026

https://github.com/kzorin52/funnycryptor

[poc] Ransomware in pure C#

cryptography poc ransomware rsa rsa-cryptography rsa-encryption

Last synced: 13 Jul 2025

https://github.com/projects-developer/triple-des-project-image-security-by-triple-des

This project aims to provide a secure way to transmit and store images using the Triple Data Encryption Standard (Triple DES) algorithm Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

btechprojects computer-science-projects computerscienceprojects cryptography decryption digital-rights-management encryption final-year-project finalyearproject finalyearprojects image-security mtechprojects secure-image-storage secure-image-transmission triple-des

Last synced: 07 Feb 2026

https://github.com/jitendragangwar123/cryptography

This Repository have some basic Cryptographic Algorithms and other basic concepts which is used in Blockchain Technology.

cryptography javascript

Last synced: 07 May 2026

https://github.com/anseki/grunt-gnirts

Obfuscate string literals in JavaScript code.

cryptography gnirts grunt-gnirts grunt-plugins gruntplugin javascript literal mangle obfuscate obfuscated obfuscation obfuscator password secret security string

Last synced: 08 Mar 2026

https://github.com/projects-developer/cyber-security-final-year-projects-github

Cyber threat detection using machine learning is a proactive approach to cybersecurity that involves training machine learning algorithms. Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

b-techprojects bcaprojects computer comupterscienceproject cryptography cyber-security final-project final-year-project m-techprojects machine-learning mcaprojects

Last synced: 07 Feb 2026

https://github.com/reddinton95/custom-plugin-backend

🚀 Master backend development with a structured, self-paced learning platform featuring 7 specialized agents and over 1000 code examples.

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Last synced: 08 May 2026

https://github.com/alichtman/decodecaesar

Intelligent Caesar-Cipher Cracking

caesar-cipher cryptography decryption frequency-analysis

Last synced: 07 Apr 2025

https://github.com/zkportal/aleo-oracle-sdk-go

Golang client SDK for Aleo Oracle

aleo backend blockchain cryptography decentralized oracle zero-knowledge

Last synced: 31 Jan 2026

https://github.com/alexlaurence/psyauth

🔐A crypto protocol system that plants an authentication token inside a user's implicit memory to unconsciously learn sensitive information that is robust against torture/coercion

biometric-authentication cryptography memory-game psychology-experiments security

Last synced: 10 Oct 2025

https://github.com/oritwoen/vusi

ECDSA signature vulnerability analysis library and CLI

bitcoin cryptography ecdsa nonce-reuse private-key-recovery rust security vulnerability-detection

Last synced: 01 Feb 2026

https://github.com/mkontani/cert-tool-extension

chrome-extension cryptography

Last synced: 07 Feb 2026

https://github.com/inferadb/ledger

InferaDB Ledger — distributed database purpose-built for authorization.

access-control audit-log authorization blockchain cryptography database distributed-systems fine-grained-access-control grpc immutable-ledger inferadb permissions rebac rust storage zanzibar

Last synced: 14 Jun 2026

https://github.com/sip-protocol/sip-protocol

Shielded Intents Protocol - The Privacy Standard for Web3

blockchain cross-chain cryptography defi intents near-protocol nextjs privacy privacy-preserving sdk stealth-addresses typescript web3 zcash zero-knowledge-proofs

Last synced: 16 Jun 2026

https://github.com/dilbwagsingh/electronic-voting

A simple yet secure online voting app

cryptography expressjs mongo nodejs reactjs

Last synced: 16 Jan 2026

https://github.com/irby/secrets-sharing-tool

A C#/.NET Core API and Angular client application designed to help users securely distribute short-session one-time secrets.

cryptography security

Last synced: 21 Apr 2026

https://github.com/h0llyw00dzz/csr-generator

The CSR Generator is a Go package that provides functionality for generating Certificate Signing Requests (CSRs) and private keys. It simplifies the process of creating CSRs with specified common names and Subject Alternative Names (SANs).

cryptography go idiomatic-go pki-tools pkix security-tools ssl-certificates