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/circa10a/l33tcrypto

Cryptography for the most l33t haxx0rs

cryptography encoder-decoder hacktoberfest

Last synced: 02 Oct 2025

https://github.com/megrxu/cryptopals

Solutions for crypto challenges in crablang.

algorithms crypto cryptography rust

Last synced: 27 Mar 2025

https://github.com/lancejpollard/hash

Hashing Function Theory

cryptography group-theory hash-functions mathematics papers

Last synced: 28 Oct 2025

https://github.com/developpeurpascal/idb-keys-generator

A simple generator of numbers lists or arrays in different programming languages.

cryptographic-algorithms cryptography cryptography-tools delphi delphi-app developer-tool developer-tools firemonkey firemonkey-applications

Last synced: 20 Jan 2026

https://github.com/stripedpajamas/cryptopals-resources

resources to help solve cryptopals challenges without spoiling anything

cryptography cryptopals cryptopals-challenges cryptopals-crypto-challenges help information infosec links resource

Last synced: 19 Jan 2026

https://github.com/devpro-software/licensify

Go Library for Digital License Signatures & Verification

cryptography digital-signature go golang library license license-management rsa software-licensing

Last synced: 18 Mar 2025

https://github.com/ibnaleem/cipherlock

🔐 Encrypt Your Files and Directories

cipher cipher-algorithms cryptography encryption encryption-algorithms encryption-decryption encryption-tool file-encryption

Last synced: 08 Jul 2025

https://github.com/jacob-c-smith/crypto

Cross platform cryptography and hashing functions

c cryptography hashing

Last synced: 04 Mar 2025

https://github.com/tomerh2001/git-crypt-pipe

Decrypts git-crypt encrypted repositories in Bitbucket Pipelines.

bitbucket bitbucket-pipeline cryptography git git-crypt pipe

Last synced: 03 Mar 2025

https://github.com/chubek/mathcord

Discord Math Bot using Custom-Made Shunting Yard (WIP), Custom-Made SHA-512, Custom-Made ED25519

cryptography cryptography-algorithms discord discord-bot ed25519 edwards-curve edwards25519 go golang golang-bot golang-discord sha-512

Last synced: 15 May 2026

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

This framework provides Crypto API to separate VirgilSDK from concrete Crypto implementation

carthage cocoapods crypto cryptography ios macos virgil

Last synced: 16 May 2026

https://github.com/amculin/php-vigenere-cipher

Simple implementation of Vigenere Cipher algorithm in PHP, also implement modification to support alpha-numeric characters

classical-cryptography cryptography php php82 php83 vigenere-cipher

Last synced: 07 Jun 2026

https://github.com/whyvl/fuzzyibe

A Haskell implementation of Fuzzy Identity Based Encryption modified to work over asymmetric bilinear pairing

cryptography haskell identity-based-encryption

Last synced: 13 Jun 2025

https://github.com/franneck94/rsa

RSA Algorithm implemented in Python

cryptography python rsa

Last synced: 06 Apr 2025

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

Validate signature using asymmetric cryptography.

cryptography ethereum javascript

Last synced: 17 May 2026

https://github.com/flucium/hsum

hsum is a simple cli tool that compute the hash digest

cryptography hash hsum rust security sha2 sha3

Last synced: 18 Mar 2025

https://github.com/hoangtran0410/chat-3des

Online Chat Application, encrypt data using TripleDES + RSA

chat-application cryptography des-crypto javaswing rsa socket-java triple-des tripledes

Last synced: 27 Mar 2025

https://github.com/bdr-pro/blockchain_maker

this is your ultimate toolkit for building, validating, and managing a blockchain in Rust.

blockchain cryptocurrency cryptography rust

Last synced: 15 Mar 2025

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

Noir ZK circuits for SIP Protocol - Funding, Validity, Fulfillment proofs

barretenberg blockchain cross-chain cryptography halo2 near-protocol noir privacy rust solana zero-knowledge-proofs zk-snarks zksnark

Last synced: 07 Mar 2026

https://github.com/p-sira/hycrypt

Stateless-overwrite hybrid cryptosystem for Python

cryptography hybrid-cryptosystem python

Last synced: 06 Mar 2026

https://github.com/shgysk8zer0/jscrypt

Cryptographic modules implemented in JavaScript (I.E. SubtleCrypto API)

aes aes256 crypto cryptography ecmascript2015 es6 es6-modules javascript jscrypt jwk nodejs npm phpcrypt rsa spki subtlecrypto subtlecrypto-api webcryptoapi

Last synced: 08 May 2026

https://github.com/zaidmukaddam/securitymobileapp

This project is a demonstration of some cryptography algorithms using Flutter Framework.

aes cryptography encryption rsa

Last synced: 18 Jun 2025

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

Virgil Pythia SDK allows developers to communicate with Virgil Pythia Service and implement Pythia protocol in order to generate a BrainKey.

brainkey cryptography encryption pythia pythia-sdk sdk virgil-pythia

Last synced: 09 May 2025

https://github.com/gat786/cryptography

Python scripts for the basic crytography techniques that are taught in our college

ciphers cryptography python3

Last synced: 17 Mar 2025

https://github.com/deadblackclover/wots-rs

Implementation of the Winternitz One-time Signature Scheme made using Rust

crypto cryptography one-time-signatures rust wots

Last synced: 15 Jan 2026

https://github.com/hanzopgp/steganography

Cryptography project.

cryptography jupyter-notebook steganography university

Last synced: 29 May 2026

https://github.com/osiris-unnefer/rsa_utils

RSA private key with N & P and Q

attack cryptography ctf decryption factorisation rsa rsa-algorithm rsa-cryptography rsa-decryption

Last synced: 29 Mar 2025

https://github.com/krutonium/arbitarycompression

"Compresses" Arbitrary files using MD5 cryptography. In theory, one can fully recover all the data, if they throw enough CPU power at it.

actually-terrible compression cryptography md5

Last synced: 10 Apr 2025

https://github.com/aliabbascheema/cryptographic_and_authentication

This project demonstrates the practical implementation and comparison of cryptographic techniques and authentication protocols Kerberos and OAuth 2.0 in cloud environments.

aes-encryption cryptography jinja2 kerberos-authentication matplotlib oauth2 performance-testing requests requests-oauthlib

Last synced: 03 Apr 2025

https://github.com/alphaolomi/cryptography-algorithms

A collection of curated cryptography algorithms

algorithms algorithms-and-data-structures cryptography cryptography-algorithms hacktoberfest python rsa-cryptography wiener-attack

Last synced: 18 Jun 2025

https://github.com/botsuniverse/cryptrooper

Cryptrooper is a module that can encode and decode your text with a given key.

crypt cryptography decode encode python python3

Last synced: 29 Mar 2025

https://github.com/2kabhishek/pycipher

Cipher algorithms with Python 🐍🔏

algorithm cipher cryptography library python tdd unittest

Last synced: 28 Oct 2025

https://github.com/lann/devcrypt

Encrypt your development secrets

cryptography env secrets

Last synced: 18 Mar 2025

https://github.com/jshawl/minisign

minisign, in ruby!

cryptography ed25519 minisign signature signature-verification

Last synced: 19 Oct 2025

https://github.com/sharif-minhaz/one-time_pad_algo-otm

One Time Pad algorithm (OTP) is a symmetric key type algorithm which means that the key used to perform encryption and decryption is the same key

cryptography one-time-pad

Last synced: 23 Jun 2025

https://github.com/hubert-kniola/diffi-hellman-algorithm

Algorithm based on the calculation of discrete logarithms in finite bodies

cryptography csharp diffie-hellman-algorithm

Last synced: 12 Apr 2025

https://github.com/go-compile/rome

The Elliptic and Edward Curve cryptography library built for multi-curve use. Unified crypto interface for ECDSA, EdDSA, ECIES and ECDH. NIST Curves, Brainpool, Ed25519, Ed448.

crypto cryptography ecdh ecdsa ecies ed25519 edwards-curve elliptic-curves encrypt multi-curve p521

Last synced: 15 Apr 2025

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

JavaScript library designed to work in browser environment, used by PrivMX communication channels.

communication cryptography end-to-end-encryption privacy web zero-knowledge

Last synced: 09 Apr 2026

https://github.com/jakubvojvoda/rsa-cryptography

Simple RSA implementation using GMP

cpp cryptography decryption encryption gmp rsa

Last synced: 14 May 2025

https://github.com/keyan/e2e_voting

Simulated end-to-end verifiable secure election protocol

cryptography elections voting

Last synced: 03 Apr 2025

https://github.com/virtualox/get-randomhex

Adjustable Random Hex String Generator.

cryptography function hex hexadecimal powershell powershell-scripting powershell-scripts random-key-generator rngcryptoserviceprovider

Last synced: 08 Apr 2026

https://github.com/hubert-kniola/blumblumshubgenerator

BlumBlumSnub Generator - Random Bit Array with 4 prepared tests

bbs cryptography generator

Last synced: 07 Sep 2025

https://github.com/hubert-kniola/digitalsignature

Simple program to verify signature created by RSA cryptography algorithm

cryptography ed25519 rsa

Last synced: 12 Apr 2025

https://github.com/travishorn/diceware-js

Cryptographically-secure electronic implementation of the Diceware Passphrase method in JavaScript.

crypto cryptography diceware passphrase password security

Last synced: 27 Mar 2025

https://github.com/moeraorg/python-moeralib

Python library to interact with Moera decentralized social network

cryptography decentralized library moera python python-library python3 social-network

Last synced: 05 Jan 2026

https://github.com/lgraubner/secure-passphrase

Small PWA for generating secure passphrases

cryptography passphrase password password-generator secure

Last synced: 11 Jan 2026

https://github.com/serviejs/keycrypt

Data encryption and decryption for rotating credentials and algorithms

cryptography encryption rotating-credentials

Last synced: 09 Nov 2025

https://github.com/snowkelus/reave

Reave - DOSS (Developer Open-Source Software) is a Cryptography Network-based Framework (CNF) for PHP, Which uses Fingerprints, Message Block Cipher, and Asymmetric / Symetric Cryptography, PATs (Personal Access Token) for Messages / IMs (Session-based) and Page View Algorithms..

cryptography framework snowkelus

Last synced: 02 Feb 2026

https://github.com/erthium/diary-a

A simple logbook for Linux machines

cpp cpp17 cryptography diary gcc linux linux-installation logbook makefile openssl qt qt6 rsa

Last synced: 13 Apr 2026

https://github.com/danielost/sha-1

SHA-1 (Secure Hash Algorithm 1) implementation.

cryptography secure-hash-algorithm sha-1

Last synced: 13 May 2025

https://github.com/HK-Transfield/python-quantum-key-exchange-simulator

A simple program to simulate a Quantum Key Exchange (QKE) algorithm, written in Python3.

cryptography encryption python python3 quantum-computing quantum-key-distribution symmetric-cryptography symmetric-encryption symmetric-key-cryptography xor-cipher xor-encryption

Last synced: 12 Aug 2025

https://github.com/koh-gt/multiply

A powershell script to multiply large numbers, showing all digits.

128-bit 256-bit 512-bit 64-bit base2 bignum cryptography ecdsa multiply octal powershell quaternary seximal ternary

Last synced: 18 Mar 2025

https://github.com/presidentbeef/ruby_crypto_examples

Examples of cryptography operations using Ruby's standard library.

cryptography elliptic-curve-cryptography openssl public-key-cryptography public-key-encryption rsa-cryptography ruby

Last synced: 11 Jul 2025

https://github.com/tmc/cryptopals

hack the planet

cryptography golang

Last synced: 07 Sep 2025

https://github.com/deovaliandro/des

Simple implementation of Data Encryption Standard

cryptography des symetric-key

Last synced: 13 Apr 2025

https://github.com/tywil04/passwordmanager

Simple PasswordManager written using Go and Svelte. Its simple and insecure and it was created as part of a college assignment.

aes-256-cbc college college-project computer-science cryptography email email-alias gin-gonic golang gpl3 insecure pbkdf2 svelte svelte-kit

Last synced: 18 Jan 2026

https://github.com/yanboishere/Trade.with-SuperTrend.parameter

OKX API to confirm the process of appearance and disappearance of upper or lower limit lines for the super trend parameters in crypto trading pairs in TraderView, and perform multiple buying and selling transactions based on this parameter index.｜对于crypto交易对中 TraderView中的超级趋势参数出现以及消失上限线或下限线前后过程进行确认从而根据该参数指标的出现进行多次合约做多&做空开仓买卖（使用OKX api）

bitcoin blockchain bot btc crypto cryptocurrency cryptography numpy okx okx-api okx-sdk okx-v5 python talib trade trade-bot tradebot

Last synced: 22 Oct 2025

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

Golang Implementation of Streaming Merkle Root, Proof, and Verify (single leaf) from Luke Champine's paper

cryptography merkleproof merkletree

Last synced: 12 Apr 2025

https://github.com/mgoyal98/e2ee-adapter

A plug-and-play TypeScript package providing End-to-End Encryption (E2EE) middleware for Express.js and NestJS applications using hybrid encryption (AES-CBC + RSA).

aes-cbc cryptography e2ee encryption end-to-end-encryption express hybrid-encryption key-exchange middleware nestjs no-code-e2ee plug-and-play rsa secure-communication security typescript zero-config

Last synced: 16 Aug 2025

https://github.com/khoinguyen2k/int3213-crytography

Java code to illustrate how cryptography work

cryptography elliptic-curve-cryptography uet

Last synced: 06 Mar 2025

https://github.com/cartory/encoderr-web

🔐 Crypto Final Project - Encoderr

cryptography decoding encoding javascript uagrm webpack

Last synced: 11 May 2026

https://github.com/jscarle/cryptoextensions.net

Useful Cryptography Extensions

crypto cryptography csharp dotnet

Last synced: 16 Aug 2025

https://github.com/gabrioliv/octave-crypto-scripts-general

Scripts of Cryptography Concepts compatible with GNU Octave.

crypto cryptography gnu-octave learning mathematical-programming mathematics number-theory octave octave-scripts programming testing

Last synced: 15 May 2026

https://github.com/robcyberlab/pixel-crypt-engine

🖼️Pixel Crypt Engine🛡️

crypto-engine cryptography cybersecurity cybersecurity-tools data-protection data-security digital-privacy hashing image-encryption image-security security-tools steganography

Last synced: 31 Mar 2025

https://github.com/definetlynotai/cryptoxide

Special Rust mini library to define your own cryptography hashes

cryptography custom customizable library mini rust side-project

Last synced: 21 Jul 2025

https://github.com/alanruno/mxd

MXD — Post-Quantum Blockchain with one-way bridge to BNB Smart Chain. Hybrid Ed25519 + Dilithium5 (FIPS 204 ML-DSA-87) at the address, transaction, and consensus layers.

agpl-3 blockchain bnb-bridge bnb-chain consensus cryptography dilithium5 fips-204 ml-dsa-87 post-quantum

Last synced: 24 May 2026

https://github.com/redreaper420/reversible-image-censorship-tool

Primitive encryption and decryption scripts for PNG images.

censorship cryptography image image-manipulation numpy pillow png python steganography

Last synced: 17 May 2026

https://github.com/twilight-project/quisquis-rust

Library for privacy-preserving cryptocurrency accounts and transactions.

bulletproofs cryptography privacy quisquis zero-knowledge

Last synced: 20 Feb 2026

https://github.com/csnp/qramm-tls-analyzer

TLS/SSL security analyzer for quantum readiness assessment and CNSA 2.0 compliance

cbom cnsa cryptography golang post-quantum-cryptography pqc quantum-computing security security-scanner ssl tls

Last synced: 13 Jan 2026

https://github.com/ayoub-aberbach/complex_it

Complex it - Complex Passwords Generator

cryptography css javascript reactjs

Last synced: 23 Mar 2025

https://github.com/hubtou/ngc

N-grams count

command-line-tool cryptoanalysis cryptography frequency-analysis learning-python learning-unix pnu-project python shell tools unix utilities

Last synced: 31 Mar 2025

https://github.com/daim-nickel-penny/elixir

BlockChain based simple DAPP

blockchain-technology cryptography javascript

Last synced: 18 Jul 2025

https://github.com/brenoepics/rsa-hex-gen

Generate an RSA key pair in hexadecimal format.

asymmetric cryptography encryp hex pair-generator rsa

Last synced: 27 Mar 2025

https://github.com/harmon758/the-cryptopals-crypto-challenges

The Cryptopals (Matasano) Crypto Challenges

crypto cryptography cryptopals cryptopals-challenges cryptopals-crypto-challenges matasano matasano-crypto-challenges matasano-cryptopals-challenge matasano-cryptopals-challenges

Last synced: 17 Mar 2025

https://github.com/moul/otp

One-Time Pad utility

conference cryptography one-time-pad otp xor

Last synced: 07 May 2025

https://github.com/mveytsman/cryptopals

Doing cryptopals in Elixir LiveBook

cryptography cryptopals-crypto-challenges elixir livebook

Last synced: 18 May 2026

https://github.com/theoddysey/ceaser-cipher-python

Ceaser Cipher Encryption using Python

ceaser-cipher cryptography encryption-decryption python

Last synced: 26 Mar 2025

https://github.com/tuokri/UnrealScript-FCrypto

Pure UnrealScript SSL/TLS implementation and cryptography utilities based on BearSSL. Work in progress.

bearssl block-cipher cryptography decryption ecdh ecdhe encryption hkdf hmac https-client sha-1 udk ue3 unreal-engine-3 unrealscript xxtea

Last synced: 11 Mar 2025

https://github.com/volkansah/encode-and-decode-php8

This guide provides examples of how to encrypt and decrypt files using PHP's Sodium extension, which offers modern cryptographic functions.

crypto cryptography decryption encryption php php8 security sodium

Last synced: 18 Aug 2025

https://github.com/drwheelicus/encoderize

Turn your text into a cryptographic masterpiece

actions cli cryptography image-generation package pytest python svg visualization

Last synced: 30 Apr 2025

https://github.com/fsmaxb/public-keys

A collection of my public keys.

cryptography gpg keychain pgp ssh

Last synced: 18 Mar 2026

https://github.com/rdner/uncrypticated

cryptography in Go made easy as it should be

cryptography security

Last synced: 15 Dec 2025

https://github.com/nezutero/crypty

abstraction on built in crypto modules

aes-encryption crypto cryptography des-encryption encryption go golang rsa rsa-cryptography rsa-encryption

Last synced: 17 Mar 2025

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