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: 2026-07-01 00:06:48 UTC
JSON Representation

https://github.com/scar26/votesec.io

An automated voting platform based on Azure Blockchain that offers complete anonymity, instantaneous results and a plethora of other features

blockchain cosmosdb cryptography iot node-chakra solidity truffle

Last synced: 03 Mar 2026

https://github.com/gunh0/whitebox_cryptanalysis

🔒 Whitebox Cryptographic Code Example

cryptography security wbc

Last synced: 25 Mar 2025

https://github.com/channeladam/opaque.net

DON'T STORE PASSWORDS! This is a .NET 5 / Core implementation of the OPAQUE protocol - a 2021 successor to the Secure Remote Password (SRP) protocol. OPAQUE is an Asymmetric Password Authenticated Key Exchange (aPAKE) protocol that provides password authentication and mutually authenticated key exchange in a client-server setting without relying on PKI and without disclosing passwords to servers or other entities other than the client machine.

cryptography dotnet5 dotnetcore dotnetstandard opaque pake

Last synced: 10 Oct 2025

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/pastesafe/pastesafe.github.io

instant web cryptography. encrypt in realtime as you type. share and decrypt ciphertext.

cryptography web-app

Last synced: 10 Mar 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/daniel-boll/zealot

Be Hideous Before Zeal Cease Zealotry.

cryptography decryption encryption study study-group study-project

Last synced: 10 Oct 2025

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/copyleftdev/tls_info

cli tool to check TLS version , and cypher

cryptography golang security-tools tls-cipher

Last synced: 31 May 2026

https://github.com/defeo/hdr

My habilitation thesis

computer-algebra cryptography elliptic-curves finite-fields isogenies number-theory post-quantum-cryptography

Last synced: 19 Mar 2026

https://github.com/hobbyquaker/passwd-file

Node.js Password File CLI Tool and Lib :closed_lock_with_key:

cli cryptography file hash login nodejs password pbkdf2 salt security sha512

Last synced: 24 Apr 2026

https://github.com/jcbritobr/libnacl

Rust wrapper API for libnacl - https://nacl.cr.yp.to/

api cryptography nacl wrapper-api

Last synced: 14 Oct 2025

https://github.com/insektdotbin/doxbox

📦 DoxBox will help you learn to make tools for cybersecurity purposes using Python 3.

cpp cryptography cybersecurity cybersecurity-education hacking hacking-tool information-gathering javascript python

Last synced: 28 Feb 2026

https://github.com/alierpm/cryptohub

This project is based on Coinranking API: The simplest API for Cryptocurrency Prices - Real-Time & Historical - Crypto Market Data - Coins - Exchanges and Bing News Search API:An AI service from Microsoft Azure that turns any app into a news search resource.

bitcoin blockchain crypto cryptocurrency cryptocurrency-exchanges cryptography ethereum newsapi

Last synced: 07 May 2026

https://github.com/blagojeblagojevic/sha256

SHA256 as a header library

c cryptography header-only sha2 sha256 sha256-hash

Last synced: 14 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/obaskly/anonymouschat

Secure Anonymous Chat

chat cryptography end-to-end-encryption flask python rsa

Last synced: 19 Jan 2026

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

Java library to interact with Moera decentralized social network

cryptography decentralized java java-library library maven moera social-network

Last synced: 23 Feb 2026

https://github.com/romainbou/ise2ee

Is it End-to-end Encrypted?

cryptography encryption messaging

Last synced: 14 Oct 2025

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

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

authentication cryptography pdf verification web3

Last synced: 23 Jun 2026

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

Port of libhogweed to Unikraft

cryptography library unikraft

Last synced: 20 Jun 2026

https://github.com/oliverbutler/steggy

Written in Rust, features a simple cli and a client-side webapp

cli cryptography rust steganography

Last synced: 12 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/jahlives/openssl_encrypt

Post-quantum hybrid encryption with chained KDF architecture. Supports ML-KEM, Kyber, Argon2, Balloon, RandomX. CLI + GUI included.

cryptography encryption hash-chaining kdf-chaining post-quantum python security steganography

Last synced: 01 Apr 2026

https://github.com/proafxin/lattices

This is the lecture series on Lattices given by Oded Regev.

cryptography lattice mathematics

Last synced: 06 Mar 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/cfcs/ocaml-poly1305

MirageOS-friendly bindings to Poly1305 C-stubs from WireGuard

cryptography mirageos ocaml poly1305

Last synced: 17 Apr 2026

https://github.com/5n00py/soft-aes

Software implementation of the AES cipher with related modes of operations

aes aes-128 aes-192 aes-256 aes-cbc aes-cmac aes-ecb cryptography cryptography-library cybersecurity pkcs7 rust-crypto rust-cryptography-library

Last synced: 02 Apr 2026

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/embetrix/satobox

Satobox is an open-source Yocto-based, privacy-focused and secure bitcoin full node solution designed for embedded linux devices.

anonymity bitcoin bitcoin-node bitcoin-wallet cryptocurrency cryptography embedded hardware-wallet linux raspberry-pi security toronionproxy wallets yocto yocto-layer

Last synced: 18 Apr 2026

https://github.com/timthedev07/cipher.py

Python ciphers

cipher cryptography python

Last synced: 18 Jun 2026

https://github.com/banyc/chatter

An End-to-End Intranet IM with Message Encryption. __Download link:

cryptography dotnet end-to-end-encryption instant-messaging intranet windows

Last synced: 30 Apr 2026

https://github.com/codewithreelofficial/tiny-blockchain-using-nodejs-chapter-1

bitcoin blockchain blockchain-technology crypto cryptocurrency cryptography nodejs

Last synced: 03 May 2026

https://github.com/vaithak/birthday-paradox-simulation

A simulator of the birthday paradox problem

birthday-paradox cplusplus cryptography gnuplot graph paradox probability simulator vaithak

Last synced: 19 Oct 2025

https://github.com/juri/fernet

Fernet cryptography format implementation in Swift

cryptography fernet swift

Last synced: 12 Oct 2025

https://github.com/antonmeep/system_random

Minimal Ada library to retrieve random data from system sources

cryptography random security

Last synced: 23 Feb 2026

https://github.com/haskell-cryptography/cryptography-blake3

A wrapper around cryptography-blake3-bindings which is more Haskell-friendly

blake3 cryptography haskell

Last synced: 13 May 2026

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/outspace/bachelor_thesis

My bachelor thesis

cryptography differential-cryptanalysis dstu7624

Last synced: 18 Mar 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/azlibdar/caesar-cipher

Caesar Cipher using JavaScript

caesar-cipher cipher-algorithms cryptography

Last synced: 31 Mar 2025

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/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/virgilsecurity/virgil-ratchet-x

Virgil Security Ratchet Objective-C/Swift 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: 14 Jun 2025

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/samuel-lucas6/padme.net

A .NET implementation of PADMÉ padding.

crypto cryptography padding padme padme-padding

Last synced: 23 Jan 2026

https://github.com/scarlet-oni/lock-talk

Console messenger between client and server using TLS 1.3 protocol to encrypt messages

console cryptography cyber-security cybersecurity messaging messanger python python3

Last synced: 13 Feb 2026

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/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/spiretechnology/go-jwt

JSON Web Token library in Go

authentication cryptography jwt sessions verification

Last synced: 31 Jan 2026

https://github.com/tacitusxi/leskodex

LeskoDEX is a DEX with a decentralized orderbook and a custom ERC-20 ESKO token. Each user can connect to the DEX via Metamask and trade the ETH/ESKO pair. A custom chart for technical analysis is available.

crypto cryptocurrency cryptocurrency-exchanges cryptography currency dapp defi erc-20 eth ethereum smart-contracts solidity solidity-dapps solidity-language token

Last synced: 26 Oct 2025

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/crocs-muni/eacirc-utils

Utils for experiment creation and result postprocessing

automation cryptography randomness research-tool

Last synced: 31 Jan 2026

https://github.com/harryr/stegive

Steganographic encrypted archive

archive cryptography encryption steganography

Last synced: 27 Oct 2025

https://github.com/cizr/hill-adn-cryptography-bridging-classical-ciphers-with-dna-based-encryption

The Hill-ADN Cryptography project combines Hill cipher methods with DNA encryption, offering a novel approach for improved data security. It includes binary to DNA conversion, amino acid translation, and Hill cipher encryption, with the decryption process addressing genetic code ambiguity challenges.

bioinformatics cryptography data-security dna encryption-decryption genetic-algorithms genetic-code hill-cipher

Last synced: 07 Oct 2025

https://github.com/stevehjohn/security

Various useful classes for information security

cryptography csharp dotnet shamir

Last synced: 28 Apr 2026

https://github.com/xornet-sl/gosss

Shamir split/combine files/strings. Tool and library

cryptography go shamir

Last synced: 23 Jan 2026

https://github.com/jitendragangwar123/ekolance-solidity-cohort-2

This repository contains Solidity programming exercises that were discussed during the Ekolance Solidity Cohort 2. It serves as a resource for learning and practicing Solidity, a programming language used for developing smart contracts on blockchain platforms like Ethereum.

blockhain-tecnology cryptography ethereum solidity

Last synced: 07 Jan 2026

https://github.com/m3dzik/libcrypto

Cryptographic utilities for Java and JavaScript

aes aes-gcm argon2 crypto cryptography curve25519 encryption hashing security x25519

Last synced: 09 Apr 2025

https://github.com/shurlinet/go-clatter

Post-quantum Noise protocol framework for Go. NQ, PQ (ML-KEM), Hybrid, DualLayer handshakes. ML-DSA-65 + SLH-DSA signing (FIPS 203/204/205). 90 patterns, 18 SLH-DSA param sets (SHA2/SHAKE/BLAKE3). Verified against Rust Clatter + NIST ACVP vectors.

blake3 cryptography digital-signatures fips-205 go golang kem key-exchange ml-dsa ml-dsa-65 ml-kem noise noise-protocol post-quantum pqc pqnoise quantum-resistant slh-dsa slhdsa x25519

Last synced: 29 Jun 2026

https://github.com/ntdls/secure-archive

Secure Archive is a file encryption utility that provides multiple encryption algorithms, variable compression levels, secure file delete, self-extracting archives and more.

cryptography file-management file-system private security showcase

Last synced: 27 Mar 2026

https://github.com/hayr-hotoca/react-native-chacha20-poly1305

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

256-bit aes android chacha20 chacha20-poly1305 chacha20poly1305 cipher cipher-algorithms cross-platform cryptography encryption encryption-algorithms ios javascript react react-native reactjs typescript

Last synced: 07 Oct 2025

https://github.com/aadityaa2606/cryptography-and-network-security

Contains multiple cryptographic encryption algorithms with TCP client server model

client-server cryptography encryption-algorithms encryption-decryption

Last synced: 29 Oct 2025

https://github.com/mashatan/go-cryptoconditions

Crypto-Conditions in Go

cryptoconditions cryptography golang-package

Last synced: 14 Jan 2026

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

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

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

Last synced: 10 Feb 2026

https://github.com/pauldreik/lemac

C++ implementation of the lemac hash by Augustin Bariant

cryptography hashing

Last synced: 21 Jun 2026

https://github.com/marekyggdrasil/website

Marek Narozniak's personal website with computer science / numerics / quantum physics tutorials.

computer-science cryptography optimization optimization-algorithms quantum-computing quantum-mechanics

Last synced: 18 Mar 2026

https://github.com/raymondfx/uptechafrica

UpTechAfrica East Africa Blockchain Hackathon - Whistleblower Solution

blockchain cryptography whistleblowing

Last synced: 11 Mar 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/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/victorzhang2014/zrcryptographyoc

ZRCryptographyOC, a set of cryptographic methods which provides an easily way to call. It includes RSA,AES,DES,MD5,SHA1,SHA224,SHA384,SHA512 algorithms.

aes cryptography ios md5 rsa sha1 sha224 sha256 sha512

Last synced: 06 Apr 2025

https://github.com/allouis/lamport-ots

🔏 Lamport One-Time Signatures in JavaScript 🔏

cryptography lamport ots signature

Last synced: 05 Apr 2025

https://github.com/embetrix/meta-pqc

OpenEmbedded/Yocto layer dedicated to Post-Quantum Cryptography, providing integration and testing of quantum-safe cryptographic algorithms for embedded linux systems.

crypto-agility cryptography embedded-linux embedded-systems openembedded post-quantum-cryptography python security yocto

Last synced: 24 Feb 2025

https://github.com/encryptex/chainex

A tool to create temporary encrypted messages

base64 cryptography datetime expiration python

Last synced: 02 Mar 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/hubenchang0515/cryptography

Cryptography Hash Algorithm - 消息摘要算法库

cryptography md5 sha sha2

Last synced: 25 Jan 2026

https://github.com/blackm0re/pyotp2289

A pure Python implementation of "A One-Time Password System" - RFC-2289

2289 cryptography freebsd otp password python security unix

Last synced: 21 Aug 2025

https://github.com/vaultie/teddybear

🧸 JS/TS/Rust library for verifiable credentials and common cryptographic operations

client-side-encryption cryptography javascript jwe jws jwt rust typescript verifiable-credentials wasm

Last synced: 13 May 2025

https://github.com/demindiro/nora_ssh

Pure Rust async library for SSH servers and clients

async async-rust cryptography encryption rust ssh ssh-client ssh-server

Last synced: 01 Apr 2025

https://github.com/guilherme-marcello/steganos-bmp

Toolkit to cipher&hide a message in a bitmap image file and recover

assembly-x86 bmp-image cryptography steganography system-call

Last synced: 16 May 2026

https://github.com/alokmenghrajani/five_thousand_needles

Five thousand randomly placed needles

art cryptography hardware-security-module

Last synced: 20 Mar 2025

https://github.com/priyanshujain/crypto

A simplified crypto module using go crypto library

aes cryptography hmac rsa sha

Last synced: 16 Jun 2025

https://github.com/aatxe/hacl-rs

Rusty bindings for HACL*, a formally verified cryptographic library written in F*.

cryptography security verified-primitives

Last synced: 27 Mar 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/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/swift-libp2p/swift-libp2p-crypto

Core LibP2P cryptography API for commonly used Keys, Hashes and Ciphers

cryptography libp2p multiformats

Last synced: 22 Jul 2025

https://github.com/descent098/diffie-hellman

A very simple implementation and explanation of the Diffe-Helmen Key Exchange

cryptography diffie-hellman diffie-hellman-exchange education learning

Last synced: 05 Apr 2025

https://github.com/yrotak/d-1

D-1 is an open source symmetric encryption algorithm

crypto cryptography d-1 done encryption encryption-algorithms encryption-decryption symetric-key

Last synced: 28 Jun 2026

https://github.com/bytemare/hash2curve

Go implementation of RFC 9380 - Hashing to Elliptic Curves

cryptography ecc elliptic-curves go golang hash hash-to-curve rfc9380 secp256k1

Last synced: 10 Apr 2025

https://github.com/Projects-Developer/Top-10-BCA-Final-Year-Projects

The top 10 BCA final year projects include e-commerce website development, online survey and feedback systems, web scraping and data mining. Top 10 BCA Projects .Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials.

bca-project bca-projects blockchain btech-projects computer-science-projects computerscienceprojects cryptography final-year-projects finalyearprojects machine-learning machinelearning malware-projects mca-projects mtech-projects research-paper-project web-develpment