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/ttcong/hello-cryptography

Some hello-world examples about cryptography

cryptography pycrypto python

Last synced: 29 Mar 2025

https://github.com/heliomarpm/cryptoh

A clean and easy-to-use cryptography utility library for Node.js, built on top of the native crypto module.

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Last synced: 28 Jul 2025

https://github.com/pur3miish/antelope-ecc

A universal JavaScript ECC digital signature and key utility package for Antelope based blockchains

antelope antelopeio-blockchain blockchain-technology crypto cryptography javascript sign-transactions signature signature-generation signature-verification

Last synced: 10 Apr 2025

https://github.com/tmc/cryptopals

hack the planet

cryptography golang

Last synced: 07 Sep 2025

https://github.com/antonio-hickey/relay

Secure communication utilizing a Proof of Identity signature and encrypted messages.

cryptography messaging

Last synced: 28 Jul 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/crodriguezvega/go-knapsackcrypto

Knapsack crypto systems in Go

crypto cryptography cryptography-library go golang knapsack-crypto knapsack-encryption merkle-hellman merkle-hellman-knapsack public-key-cryptography

Last synced: 12 Apr 2025

https://github.com/abennett/cryptlog

A proof of concept for an AES-CBC-based, limited-read log appender.

aes cryptography go log

Last synced: 03 Apr 2025

https://github.com/nilsmt/periodic-encryption

Homemade package to encrypt text using the periodical table of elements and vigenere cipher

chemical-elements cryptography encryption-decryption periodic-table-of-elements python selfmade vigenere-cipher

Last synced: 19 Feb 2026

https://github.com/clats97/clatsguard

Secure your documents with this Python AES-256-GCM file encryptor featuring PBKDF2-HMAC key derivation, passphrase-based or hex key usage, and a Tkinter GUI for user-friendly encryption. Open-sourced. This project was peer reviewed by a CompTIA Security+ person.

aes256 aes256-gcm cryptography encryption encryption-decryption file-encryption python security trending

Last synced: 03 Apr 2025

https://github.com/johnbasrai/rc5-cbc

RC5 Symmetric Block Cipher in Rust

cryptography

Last synced: 28 Jul 2025

https://github.com/odhithsen/hashvault

🔐"HashVault" is an all-in-one locally installed password manager that keeps users' passwords and other sensitive information and credentials safe for all at the convenience of a single master key.

cryptography java javafx password-manager

Last synced: 02 Jan 2026

https://github.com/gianlucatruda/nis-encrypted-messaging

A demonstration of security principles for peer-to-peer communications of sensitive content.

aes-encryption cryptography messaging python3 rsa-cryptography security

Last synced: 03 Apr 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/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/unbekanntes-pferd/dco3-crypto

A Rust crate for cryptography in DRACOON - more info on DRACOON here: https://dracoon.com

cryptography dracoon openssl rust-crate rust-crypto rust-lang

Last synced: 02 Aug 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/teyckmans/gradle-tink

Gradle plugin that provides encryption support for secrets using https://github.com/google/tink.

crypto cryptography gradle java kotlin security tink

Last synced: 10 May 2026

https://github.com/darxisr/salsa20

Salsa20 encryption/decryption without libraries with GUI

cipher cryptography decryption development encryption gui open-source pyqt5 python salsa20 source-code tools

Last synced: 03 Apr 2025

https://github.com/markus28/steganography

Steganography: Encrypt and hide any data in an image, video or audiofile

cryptography python steganography

Last synced: 18 Aug 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/dhouib-mohamed/secure-network-authentication

Secure Network Authentication project focuses on establishing robust authentication and network services using OpenLDAP, SSH, Apache, OpenVPN, DNS, and Kerberos.

apache authentication cryptography dns infrastructure kerberos network-management network-security openldap openvpn ssh

Last synced: 18 May 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/mattlianje/enigma

CLI Tool ... A pure FP, M3 Enigma machine as used by the Germans from 1934-45.

cipher cryptography enigma-machine enigma-simulator functional-programming

Last synced: 28 Mar 2025

https://github.com/franneck94/rsa

RSA Algorithm implemented in Python

cryptography python rsa

Last synced: 06 Apr 2025

https://github.com/agucova/oxcrypt

A fast, memory-safe Cryptomator client written in Rust.

cryptography cryptomator filesystem fuse rust vault

Last synced: 15 May 2026

https://github.com/h0llyw00dzz/fiber2fa

This is a custom 2FA (Two-Factor Authentication) middleware for the Fiber web framework. It provides a secure and easy-to-use solution for implementing 2FA in Fiber applications. The middleware supports TOTP (Time-based One-Time Password) authentication and offers customizable configuration options.

advanced crypto cryptography fiber fiber-framework go golang idiomatic-go two-factor two-factor-authentication twofactor

Last synced: 19 Sep 2025

https://github.com/wchresta/cotary

Cotary allows you to prove that you have a document without releasing it.

cli cryptography proof simple twitter utils

Last synced: 26 Mar 2025

https://github.com/razenpok/razensoft.xxtea

A simple and fast zero-dependency cryptography cypher for Unity

cryptography csharp cypher unity unity3d xxtea

Last synced: 15 May 2026

https://github.com/priyakdey/sigil

Sigil is a minimal-dependency, lightweight and modular cryptographic library in Java, for working with JSON Object Signing and Encryption (JOSE) family of standards. It supports secure signing, encryption, key handling and encoding/decoding of JWT, JWS, JWE components.

cryptography java jose jwa jwe jwk jws jwt

Last synced: 23 Jun 2025

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

A simple program to encrypt and decrypt graphic files

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Last synced: 12 Apr 2025

https://github.com/deovaliandro/des

Simple implementation of Data Encryption Standard

cryptography des symetric-key

Last synced: 13 Apr 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/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/aeondave/cryptonite-go

Minimal, dependency-free cryptography library in Go

cryptography cypher go purego tiny

Last synced: 16 Jan 2026

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/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/swaechter/pkcs11

A purely Java based PKCS11 library based on project Panama/FFI/FFM - no JNI

cryptography iaik java pkcs11

Last synced: 23 May 2026

https://github.com/jshawl/minisign

minisign, in ruby!

cryptography ed25519 minisign signature signature-verification

Last synced: 19 Oct 2025

https://github.com/cipherdogs/ed25519_to_curve25519

Convert ed25519 keys and sign to curve25519

crypto cryptography curve25519 ed25519 rust

Last synced: 16 Aug 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/i-umairkhan/signature_validation

Validate signature using asymmetric cryptography.

cryptography ethereum javascript

Last synced: 17 May 2026

https://github.com/dannywillems/ocaml-bls12-381

Fast BLS12-381 implementation in OCaml

bls-signature bls12-381 blst cryptography fft hash-to-curve ocaml pairing pairing-cryptography poseidon rescue signatures tezos zero-knowledge

Last synced: 31 Oct 2025

https://github.com/daedalus/cryptopals

cryptopals solutions

cryptography

Last synced: 27 Mar 2025

https://github.com/buabaj/fairness-engine

a simple secure multi-party computation server to ensure input data privacy while maintaining correctness and fairness using shamir's secret sharing protocol

cryptography golang mpc shamir-secret-sharing

Last synced: 12 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/sammyne/sm4

A Go implementation of SM4 block cipher algorithm as specified by GM/T 0002-2012

block-cipher cryptography sm4

Last synced: 18 Mar 2025

https://github.com/shilongdai/passwordsaver

A password manager with high-grade encryption and authentication

cryptography encryption java password-manager password-store

Last synced: 03 Aug 2025

https://github.com/sdanielsilva/simpleimageencryptor

A versatile file encryption tool that securely encrypts and decrypts image and other file types with AES and DES algorithms, supporting multiple modes and easy key management.

aes cbc cipher cryptography cryptography-tools data-protection des ecb encryption file-encryption image-encryption iv-generation java key-management secure-file-storage security

Last synced: 04 Jun 2026

https://github.com/webceyhan/vite-chain

ViteChain - Blockchain Demo

bitcoin blockchain bootstrap cryptography css express html javascript nodejs p2p proof-of-work rest sse typescript vite vue web3 websocket

Last synced: 09 Apr 2026

https://github.com/aveygo/jsnewhope

Javascript implementation of scottwn/PyNewHope, a post-quantum cryptographic scheme

cryptography javascript key-exchange-algorithms newhope quantum quantum-computing

Last synced: 18 Mar 2025

https://github.com/CorvidLabs/ts-algochat

🔐 TypeScript implementation of AlgoChat - Encrypted messaging on Algorand

algorand blockchain chacha20-poly1305 cryptography encryption messaging typescript x25519

Last synced: 08 Mar 2026

https://github.com/czechbol/mathcrypto

A library of useful funtions used in cryptography. For learning purposes only.

cryptography euclidean-algorithm hacktoberfest mathematics number-theory prime-numbers python

Last synced: 07 Mar 2026

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

Cross platform cryptography and hashing functions

c cryptography hashing

Last synced: 04 Mar 2025

https://github.com/dolutech/cryptnote-php

A PHP library for creating encrypted, self-destructing messages with view limits and optional password protection

aes-256 cryptography encryption one-time-secret password-protection php-library secure-notes security self-destructing-messages sqlite

Last synced: 17 Jan 2026

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/danielost/sha-1

SHA-1 (Secure Hash Algorithm 1) implementation.

cryptography secure-hash-algorithm sha-1

Last synced: 13 May 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/zhongruoyu/aes

Advanced Encryption Standard (AES) in C with file encryption/decryption support.

aes cryptography encryption

Last synced: 23 Jul 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/multifactor/ssskit

Fast, small and secure Shamir's Secret Sharing library crate

cryptography shamir-secret-sharing

Last synced: 07 Apr 2026

https://github.com/varun-doshi/erasure-coding

Rust Implementation of Erasure Codes

cryptography math polynomial

Last synced: 29 Mar 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/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/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/chronosgit/javary

Javary is a secure, Java-based personal diary application built with a client-server architecture. It enables users to create, store, and retrieve encrypted diary entries over a network, ensuring privacy and data persistence.

backend client cryptography diary frontend java jdbc junit mockito networking secure server slf4j testing

Last synced: 16 Aug 2025

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

Stateless-overwrite hybrid cryptosystem for Python

cryptography hybrid-cryptosystem python

Last synced: 06 Mar 2026

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/wannaverseofficial/kmp-crypto

Common cryptography library for Kotlin Multiplatform

aes android crypto cryptography ed25519 hashing ios kmp kotlin-multiplatform rsa secure-random

Last synced: 21 May 2026

https://github.com/petrknap/php-crypto-sodium

The library that packages functional `sodium_crypt_*` into objects.

aead aes asymmetric-cryptography block-cipher chacha20 cryptography curve25519 decryption encryption php php-library poly1305 public-key-cryptography secret-key-cryptography security sodium stream-cipher symmetric-cryptography x25519 xchacha20

Last synced: 10 Jul 2025

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/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/i2rys/pssl

Powerful shuffle & unshuffle libary.

cryptography key powerful shuffle unshuffle

Last synced: 18 Sep 2025

https://github.com/roydevashish/hybrid-technique-for-image-encryption

This project implements a hybrid image encryption technique by combining asymmetric and symmetric encryption methods. It utilizes the ECC for asymmetric encryption and ChaCha20 stream cipher for symmetric encryption to achieve robust and secure image protection.

asymmetric-cryptography chacha20 cryptography ecc elliptic-curves-cryptography encryption hybrid image image-encryption image-protection python3 stream-cipher symmetric-cryptography uv

Last synced: 13 Jun 2026

https://github.com/lukinalexeyg/phpcrypt

Stand-alone version of php_sha256_crypt without any PHP dependencies

c cryptography php

Last synced: 21 Apr 2026

https://github.com/elichai/chacha20

chacha20 chacha20-poly1305 cryptography rust

Last synced: 26 Jul 2025

https://github.com/arthursudbrackibarra/t2-seguranca-de-sistemas

Trabalho 2 de Segurança de Sistemas.

cryptography java rsa security

Last synced: 22 Mar 2025

https://github.com/kurosci/qrypto

The post-quantum cryptography library in pure Rust.

crypto cryptography post-quantum post-quantum-cryptography qrypto rust

Last synced: 22 Mar 2025

https://github.com/frankodoom/crypto.net

:lock: :key: :policeman: Pasword Hashing based on System.Security.Cryptography and OBVIEX

cryptography csharp hashing-algorithm password-hash system-security

Last synced: 07 Nov 2025

https://github.com/alexruperez/cryptokitcli

Take Apple CryptoKit to the command line and perform cryptographic operations securely and efficiently.

apple cli command-line command-line-tool cryptography cryptokit security swift

Last synced: 09 Aug 2025

https://github.com/janbrohl/hashcrypto

Hash-Based Crypto Experiment

cryptography python

Last synced: 09 Sep 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/mingikang31/sift-v1.0

Cryptography Project

cryptography encryption-decryption python3

Last synced: 16 Jun 2025

https://github.com/phma/wring-twistree

Whole-message cipher and tree hash

cipher-algorithm cryptography hashing-algorithm

Last synced: 18 Feb 2026

https://github.com/iprs-dev/drand-rs

Drand client in Rust

cryptography drand random-number-generators

Last synced: 26 Mar 2025

https://github.com/max9836/sniper-cryptography

This is a command-line encryption and decryption tool leveraging military-grade encryption standards. It is lightweight, easy to use, and optimized for secure data operations.

aes-encryption command-line-tool cryptography encryption encryption-decryption encryption-tool go golang new-algorithm rsa-encryption sha-256 sha-512 sha3-256 sha3-512 shake256 xor-encryption