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: 2026-06-29 00:07:02 UTC
JSON Representation

https://github.com/ktauchathuranga/inline-cryptography-toolkit

A Visual Studio Code extention for encrypt, decrypt, and hash text Inline.

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Last synced: 13 Feb 2026

https://github.com/ajay-dhangar/project_crypto

Live Previews

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Last synced: 12 Feb 2026

https://github.com/ornella-gigante/cryptosafe

A simple Java application for encrypting and decrypting messages and files using DES and RSA algorithms, featuring a user-friendly menu interface. Perfect for learning about cryptography and secure file handling.

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Last synced: 13 Feb 2026

https://github.com/micchickenburger/cryptotools

A versatile cryptographic tool for data hashing, encryption, decryption, digital signing, password security, and secure random number generation, entirely in the browser.

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Last synced: 13 Feb 2026

https://github.com/timebertt/grypto

Understanding cryptographic algorithms by implementing them in Go :mortar_board:

cryptography golang learning-by-doing learning-exercise

Last synced: 08 Jun 2026

https://github.com/powershelllibrary/crypto.aes

PowerShell module for cryptography (RSA)

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Last synced: 04 Mar 2026

https://github.com/virgilsecurity/virgil-ratchet-kotlin

Virgil Security Ratchet 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: 13 Feb 2026

https://github.com/berkekaragoz/experimental-media-platform

My coding tryouts combined in a media platform concept. Next.js, GraphQL, FaunaDB, styled-components and more...

cryptography faunadb graphql nextjs styled-components

Last synced: 02 May 2026

https://github.com/vishesh-gupta/cryptology

Container for multiple Cryptography algorithms, ciphers and techniques

cryptography hashing-algorithm rsa-key-encryption secure-hash-algorithm

Last synced: 09 Feb 2026

https://github.com/zunainaliazam/pixcrypt---image-security-suite

PixCrypt - A simple implementation of image encryption/decryption using AES Algorithm in client side JS.

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Last synced: 30 Apr 2026

https://github.com/aarambh-darshan/mini-blockchain

A robust, full-stack blockchain engine built in Rust. Features a custom VM for smart contracts with real gas economics, Proof-of-Work consensus, UTXO transactions, multisig wallets, and a real-time SvelteKit block explorer.

blockchain cryptography defi distributed-systems p2p proof-of-work rust smart-contracts sveltekit utxo vm web3

Last synced: 10 Feb 2026

https://github.com/tynes/libsigner

manage watch only bitcoin wallets with bcoin

bcoin bitcoin cryptography ledger nodejs trezor

Last synced: 08 May 2026

https://github.com/hicsail/oracles

Useful zero-knowledge (ZK) problems constructed from real world scenarios.

cryptography zero-knowledge-proofs

Last synced: 03 Jun 2026

https://github.com/pieroboseta/piero-ende-coder

A powerful encryption and decryption tool that combines the Vigenère cipher, XOR encryption, and Base64 encoding to secure messages. This tool allows users to encode and decode messages using a secret key, ensuring an extra layer of security.

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Last synced: 26 Feb 2026

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

A simple E2EE chat for iOS which uses Virgil Security services.

chat cryptography demo encryption end-to-end-encryption ios ios-app messenger

Last synced: 19 Jun 2026

https://github.com/lyang/gpg-utils

Simple Wrapper for shelling out to gpg

cryptography gnupg gpg java processbuilder

Last synced: 01 Feb 2026

https://github.com/hirako2000/polybius-square-cipher

Some Polybius Square Cipher visualisation

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Last synced: 16 Feb 2026

https://github.com/xu-cheng/pbc-bindings

:electric_plug: Bindings for Pairing-Based Cryptography (libpbc)

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Last synced: 18 Apr 2026

https://github.com/ideal-lab5/etf

"Encryption to the Future" consensus and node

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Last synced: 17 Mar 2026

https://github.com/tangle-network/masp-protocol

Multi-asset shielded pool extending protocol-solidity contract system

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Last synced: 31 Jan 2026

https://github.com/sgiath/secp256k1

Elixir wrapper for Bitcoin Core secp256k1 library

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Last synced: 01 Feb 2026

https://github.com/lucadibello/virtualsafe

🔒 Crypt your directories and make your files completely unreadable!

cryptography fernet privacy-tools python security security-tool

Last synced: 06 Jun 2026

https://github.com/youben11/psi

Playing with different Private Set Intersection protocols

cryptography privacy-preserving psi

Last synced: 25 Apr 2026

https://github.com/primefactor-io/xchacha20-poly1305

100% RFC compliant implementations of ChaCha20-Poly1305 and XChaCha20-Poly1305

chacha20 chacha20-poly1305 cryptography cryptography-algorithms poly1305

Last synced: 01 Mar 2026

https://github.com/lumarans30/astralsafeclient

.NET MAUI app that encrypts and decrypts an exe file.

aes-128 anti-piracy client-side cryptography http-requests maui-app

Last synced: 18 Jun 2026

https://github.com/siddhpant/junior-inctf-2017-writeup

Writeups for Junior InCTF 2017

android binary-exploitation cryptography ctf ctf-challenges ctf-solutions ctf-writeups forensics reverse-engineering trivia web-exploitation

Last synced: 29 Apr 2026

https://github.com/21-dot-dev/swift-bitcoinkernel

Swift package for running a Bitcoin node

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Last synced: 23 Jun 2026

https://gitlab.com/hackancuba/blake2signer

Using BLAKE in keyed hashing mode to sign and verify data.

blake2 blake3 cryptography hashlib hmac python

Last synced: 15 Feb 2026

https://github.com/monich/foil

glib-style crypto

aes cryptography des-cipher encryption glib rsa security

Last synced: 21 May 2026

https://github.com/virgilsecurity/virgil-keyknox-javascript

Keyknox SDK allows developers to communicate with Virgil Keyknox Service to upload, download, and synchronize encrypted sensitive data (private keys) between different devices.

cryptography data-sharing keyknox sdk

Last synced: 09 May 2025

https://github.com/ntdls/blowfish

A BlowFish C++ implementation.

blowfish cryptography

Last synced: 15 Feb 2026

https://github.com/arad-afzali/aes-file-encryptor-decryptor

AES-File-Encryptor is a Python-based application that provides a user-friendly graphical interface for encrypting and decrypting files or texts using the Advanced Encryption Standard (AES). This tool is designed to help users secure their files or texts by generating encryption keys, and encrypting or decrypting them when needed.

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Last synced: 20 Jan 2026

https://github.com/tramires/cose-w

WebAssembly COSE RFC 8152 library to encode/decode COSE messages in JS.

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Last synced: 07 May 2025

https://github.com/lowleveldesign/powercrypto

PowerShell module with various commands to encode/encrypt/print byte arrays.

cryptography powershell

Last synced: 01 Aug 2025

https://github.com/r3li4nt/aescrypter

Encrypt and Decrypt files with Advanced Encryption Standard.

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Last synced: 09 Mar 2026

https://github.com/virgilsecurity/demo-nexmo-chat-android

A simple Web application that demonstrates how the end-to-end encryption works in chat messaging use case. The application uses Nexmo as a messaging provider.

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Last synced: 09 May 2025

https://github.com/diptochakrabarty/voice-encryption

Use Sockets and Encryption Algorithms for cryptography project

cryptography encryption hashing-algorithm rsa rsa-cryptography

Last synced: 01 Aug 2025

https://github.com/ancientlore/hashsrv

A web service that performs hashing, encryption, encoding, and compression.

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Last synced: 06 May 2025

https://github.com/miraclx/libeaes-js

Enhanced simultaneous compression + encryption prototype with NodeJS

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Last synced: 28 Oct 2025

https://github.com/gavincarr/go-slip39

A SLIP-0039 library for Go.

bitcoin cryptography go slip39

Last synced: 31 Jul 2025

https://github.com/lablnet/cryptographic_algorithms

My own implementation of the Cryptographic Algorithms in Python.

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Last synced: 08 Sep 2025

https://github.com/knightchaser/cryptography

A programmatic resource for cryptography (Gachon CPS + Personal)

algorithm cryptography implementation resource snippet

Last synced: 03 Aug 2025

https://github.com/littleli/paillier4j

Simple Paillier cryptosystem library

cryptography homomorphic-encryption paillier property-based-testing

Last synced: 15 May 2026

https://github.com/phuc16102001/lamport-signature

The project implement the Lamport Signature which is a Digital signature. Furthermore, its weakness is spotted out by forging a signature.

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Last synced: 15 Jan 2026

https://github.com/yangboz/bitcoin-puzzles

The place for Bitcoin related puzzles!

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Last synced: 02 Apr 2025

https://github.com/soreing/des-cpp-encrypt

Simple DES encryption library for C++

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Last synced: 05 Apr 2025

https://github.com/pprattis/Advanced-Encryption-Standard-for-credit-card-number

A script in Python that encrypts and decrypts a credit card number with AES.

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Last synced: 28 Sep 2025

https://github.com/kernelmethod/ChaChaCiphers.jl

GPU-compatible implementations of the ChaCha stream cipher family

cryptography rng

Last synced: 06 Apr 2026

https://github.com/substrate-system/keys

Create and store asymmetric keys with the webcrypto API in the browser

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Last synced: 28 Sep 2025

https://github.com/martinpaljak/cdoc4j

Java library for handling CDOC 1.0/1.1/2.0 files with AES-256 GCM and RSA or ECC

aes-256 aes-gcm cdoc cryptography encryption java xml

Last synced: 14 Apr 2025

https://github.com/cyrildever/crumbl-js

Secure data storage with trusted third-parties to use in Javascript environment

cryptography data-masking javascript-library signing-trusted storage-api typescript-library

Last synced: 26 Aug 2025

https://github.com/cyrildever/crumbl-hoster

Easy hosting server for the Crumbl platform

cryptography data-masking javascript-library signing-trusted storage-api typescript-library

Last synced: 10 Apr 2025

https://github.com/JuliaCrypto/Krypto.jl

A futuristic crypto library. In Julia. [OLD]

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Last synced: 06 Apr 2026

https://github.com/cyanheads/toolkit-mcp-server

A Model Context Protocol server providing LLM Agents with system utilities and tools, including IP geolocation, network diagnostics, system monitoring, cryptographic operations, and QR code generation.

cryptography developer-tools geolocation llm llm-agent mcp model-context-protocol networking system-utilities typescript

Last synced: 28 Mar 2025

https://github.com/ashubly25/cryptography

My Work consists of Diffie-Hellman-Fibonacci, Hashing and XOR Cipher

cryptography

Last synced: 26 Mar 2025

https://github.com/pelock/stringencrypt-vscode-extension

Encrypt and hide plain text strings & file contents within your source code in a secure & encrypted form with the help of a polymorphic engine, generating random-looking decryption code every time.

cryptography encryption file-encryption polymorphic-engine security string-encoding string-encryption string-generator

Last synced: 30 Jul 2025

https://github.com/Signal-K/Prof

Prof, from the icelandic word for tests: automated unit tests for the Star Sailors ecosystem

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Last synced: 11 May 2025

https://github.com/danieldidiobalsamo/sha256_golang

Go SHA-256 from-scratch implementation

cryptography go hasing sha256

Last synced: 11 Apr 2025

https://github.com/alisianoi/lyra2-java

Subset of Lyra2 password hashing

cryptography hash-algorithm password

Last synced: 05 Apr 2025

https://github.com/arda-guler/bingallery

Encode your files into RGB images and decode them back.

command-line-tool cryptography decoder decoding encoder encoding proof-of-concept

Last synced: 14 Sep 2025

https://github.com/dedis/fixbuf

Fixed length binary encoding of arbitrary structures in Go

cryptography encoding fixed-length golang

Last synced: 21 Sep 2025

https://github.com/virgilsecurity/virgil-sdk-pfs-x

Virgil PFS SDK Objective-C/Swift

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Last synced: 21 Aug 2025

https://github.com/tannerdsilva/swiftbcrypt

Swift package wrapping the OpenWall BCrypt hashing algorithm

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Last synced: 19 Feb 2026

https://github.com/ali2210/wizdwarf

(:tada:) WzDwarf is a decentralized molecular application interface

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Last synced: 11 Sep 2025

https://github.com/haizzz/lockbox

Double click to encrypt / decrypt a folder

cryptography encryption hacktoberfest python python3

Last synced: 06 Apr 2025

https://github.com/darshan-kc/python-caesar-cipher

A substitution cipher that shifts letters by a fixed number of positions

cryptography python3

Last synced: 10 Apr 2025

https://github.com/firaskahlaoui/secury

Secury is a robust encryption and security application designed to ensure data privacy and access management. It features data encryption (Caesar Cipher, AES) and implements advanced Identity and Access Management (IAM) techniques, including Role-Based Access Control (RBAC) and Access Control Lists (ACL).

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Last synced: 23 Jul 2025

https://github.com/n3m/cryptext

Cryptographic SHA256-AES-Wrapped Passphrase Text Encoder and Decoder

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Last synced: 12 Jan 2026

https://github.com/jpvitan/marsa

A Python library that lets you experiment with the mathematics of the Rivest–Shamir–Adleman (RSA) cryptosystem.

cryptography number-theory pypi python rsa

Last synced: 07 Apr 2026

https://github.com/rtmigo/dmk_py

Experimental encryption app

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Last synced: 10 Jul 2025

https://github.com/mohammadumar-dev/passkeys-cli

A secure, production-level command-line password manager with encryption, validation, and enhanced user experience.

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Last synced: 08 Mar 2026

https://github.com/smirnovvad/shasum

shasum implemented in rust

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Last synced: 10 Apr 2025

https://github.com/michel-leonard/c-rho

The Pollard's Rho algorithm for 64/128 bits Integer Factorization in pure C.

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Last synced: 20 Sep 2025

https://github.com/darshan-kc/python-vigenere-cipher

Vigenere Ciphere using python

cryptography python3

Last synced: 14 Aug 2025

https://github.com/togatech/tenvoy

PGP, NaCl, and PBKDF2 in node.js and the browser (hashing, random, encryption, decryption, signatures, conversions), used by TogaTech.org

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Last synced: 28 Jul 2025

https://github.com/arnaud-robin/shake128

Implementation of SHAKE128 in c++.

cpp cryptography fips202 shake128

Last synced: 10 Apr 2025

https://github.com/nicknaso/cryptoppjs

Node.js native addons for cryptopp

cplusplus crypto cryptography javascript native-module nodejs

Last synced: 17 Feb 2026

https://github.com/mortendahl/pond

Experimental library for deep learning on encrypted data

cryptography deep-learning machine-learning secure-computation

Last synced: 15 Jan 2026

https://github.com/johndoe31415/padding-oracle-helper

PKCS#7 CBC padding oracle command line interface helper

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Last synced: 08 Apr 2026

https://github.com/lvmalware/ztunnel

Secure End-To-End Encrypted tunnels using zig

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Last synced: 28 Jul 2025

https://github.com/cyrildever/feistel-jar

Feistel cipher implementation for the JVM providing format-preserving encryption

algorithm cryptography encryption feistel-cipher format-preserving-encryption fpe xor-operation

Last synced: 19 Feb 2026

https://github.com/varun-doshi/rs-merkletree

Rust Library to create Merkle Trees

cryptography data-structures ethereum hash merkle-proof merkle-tree rust tree

Last synced: 04 Oct 2025

https://github.com/VirgilSecurity/virgil-sdk-pfs-x

Virgil PFS SDK Objective-C/Swift

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Last synced: 02 Aug 2025

https://github.com/0xnu/qrme

qrme is a quantum-resistant encrypted machine learning system designed to protect sensitive data and models against potential threats from quantum computing.

cryptography large-language-model large-language-models llm llms post-quantum-cryptography