An open API service indexing awesome lists of open source software.

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.

https://github.com/systemslibrarian/crypto-lab-curve-lens

Browser-based elliptic curve demo — point addition, scalar multiplication, and live ECDH across P-256, Curve25519, and secp256k1. Real field arithmetic. No backends. No simulated math.

browser crypto-lab cryptography curve25519 ecc ecdh elliptic-curves noble-curves p-256 point-addition scalar-multiplication secp256k1 typescript visualization vite

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-timing-oracle

Browser-based timing side-channel attack demo — string comparison leakage, HMAC verification timing, RSA private key bit leakage, and cache-timing attacks with real performance.now() measurements and constant-time defenses. No backends. No simulated timing.

browser cache-timing constant-time cryptanalysis crypto-lab cryptography hmac kocher lucky-thirteen rsa security side-channel timing-attack typescript vite

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-dead-sea-cipher

Browser-based cryptographic history demo — from Atbash in Jeremiah 25:26 (~600 BCE) to AES-256-GCM (2001 CE). Every cipher, every fatal flaw, every lesson that built the next one.

aes-gcm atbash caesar-cipher cryptography frequency-analysis historical-ciphers kasiski one-time-pad vigenere-cipher webcrypto

Last synced: 01 Jun 2026

https://github.com/bradford-smith94/cs579

CS 579 Foundations of Cryptography

c cryptography

Last synced: 29 Jun 2026

https://github.com/naveenrajm7/cipherapp

basic python gui for some cryptographic techniques

cipher-algorithms cryptography

Last synced: 22 Jun 2026

https://github.com/systemslibrarian/crypto-lab-psi-gate

Browser-based Private Set Intersection demo implementing classic DH-PSI (Meadows 1986, Huberman-Franklin-Hogg 1999) over ristretto255 with RFC 9380 hash-to-curve. The primitive behind Signal contact discovery and Apple password monitoring.

contact-discovery crypto-lab cryptography ddh dh-psi diffie-hellman hash-to-curve noble-curves privacy-preserving private-set-intersection psi rfc-9380 ristretto255 secure-computation secure-multi-party-computation secure-two-party-computation signal-protocol

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-mceliece-gate

Browser-based Classic McEliece demo — the oldest post-quantum KEM (1978), binary Goppa codes, visceral 261KB public key visualization, and four-way comparison against ML-KEM, BIKE, and HQC. No backends. No simulated math.

aes-256-gcm binary-goppa browser code-based crypto-lab cryptography goppa-codes kem lattice mceliece nist post-quantum pqc typescript vite

Last synced: 01 Jun 2026

https://github.com/primetdmomega/bay-cracker

A set of tools for encryption, decryption of messages and to create new cyphers !

cryptography decryption encryption

Last synced: 25 Mar 2025

https://github.com/systemslibrarian/crypto-lab-hybrid-sign

Browser-based PQ/T composite signature demo implementing the Ed25519 + ML-DSA-65 hybrid per IETF LAMPS draft-ietf-lamps-pq-composite-sigs-16. Classical + post-quantum defense in depth for long-lived signatures.

composite-signatures crypto-lab cryptography defense-in-depth digital-signatures dilithium ed25519 hybrid-signatures ietf-draft lamps ml-dsa ml-dsa-65 noble-curves noble-post-quantum post-quantum-cryptography pq-t-hybrid tls-1-3 x509

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-model-breach

Browser-based HiAE threat model case study — AESL, Theorem 1 candidate enumeration, MITM state recovery, byte decomposition, guess-and-determine key recovery. Security claims are contracts. The threat model is the fine print. No backends. No simulated math.

aead aes algebraic-attacks browser-demo crypto-lab cryptography meet-in-the-middle security-analysis threat-modeling typescript vite

Last synced: 01 Jun 2026

https://github.com/systemslibrarian/crypto-lab-dilithium-seal

Browser-based demo of ML-DSA (CRYSTALS-Dilithium), the lattice-based post-quantum digital signature scheme standardized as NIST FIPS 204 in August 2024. Sign, verify, and seal documents — quantum-resistant.

browser-demo crypto-lab cryptography crystals-dilithium digital-signatures lattice-cryptography ml-dsa module-lwe nist-fips-204 post-quantum-cryptography typescript vite webcrypto

Last synced: 01 Jun 2026

https://github.com/devehab/cryptotools

An educational cryptography toolkit in Arabic that provides hands-on learning for various cryptographic concepts including wallet generation, encryption/decryption, hashing, and digital signatures. All operations are performed client-side for maximum privacy and security.

cryptography digital-signatures encryption-decryption encryption-decryption-tool hash-functions open-source wallet-generator

Last synced: 09 Feb 2026

https://github.com/dogukansahil/advancedbrutecipher

Advanced Brute Cipher is a simple and secure encryption tool that performs all operations locally in your browser using HTML, JavaScript, and CSS. Manage your encryption keys without relying on external CDNs.

cryptography css decryption encryption html javascript key-management local-storage python security web-application

Last synced: 13 Feb 2026

https://github.com/alvii147/jwgo

Efficient JWT creation and parsing in Go

cryptography golang jwt

Last synced: 14 Jun 2025

https://github.com/ramsyana/lorenz-chaos-encrypt

Plain Convolution Encryption as an Alternative to Overcoming the Limitations of Synchronization-Based Methods

chaos-synchronization chaos-theory cryptography encryption lorenz-system numerical-methods python secure-communication

Last synced: 09 Apr 2025

https://github.com/trinhminhtriet/vault

🔐 Decrypt and manage encrypted data with a CLI tool built using Go and Cobra framework.

cli cryptography decryption encryption go rsa security

Last synced: 09 Apr 2025

https://github.com/rub-nds/ssh-strict-kex-violations-state-learning-artifacts

Artifacts for the paper "Finding SSH Strict Key Exchange Violations by State Learning", accepted at the ACM Conference on Computer and Communications Security (CCS) 2025.

artifacts attack cryptography cve-2025-32433 cve-2025-32942 ssh statelearning strict-kex vulnerability

Last synced: 25 Jun 2026

https://github.com/audrastump/hmac-encryption

Client/server socket using HMAC for data authenticity and integrity

cryptography cybersecurity encryption-decryption

Last synced: 13 Jul 2025

https://github.com/tsovak/a-cryptographic-hash-function

A Cryptographic Hash Function

cpp cryptography hash-functions

Last synced: 02 Apr 2025

https://github.com/ntdls/ntdls.nasccl

The NetworkDLS original symmetric cipher algorithm ported to C#.

algorithms cryptography encryption symmetric-encryption

Last synced: 11 Mar 2025

https://github.com/chardoncs/minotp

Simple OTP library for Rust.

cryptography hotp one-time-password otp rust totp

Last synced: 10 Feb 2026

https://github.com/madliani/caesar-cipher

The Caesar's Cipher Encoder and Decoder

caesar-cipher cryptography ruby

Last synced: 01 Mar 2025

https://github.com/opifexm/cryptoanalyzer

Data encryption decryption program

cryptography encryption java maven

Last synced: 10 May 2026

https://github.com/projects-developer/super-cipher-project

The Super Cipher Project is a cryptographic system designed to provide ultra-high security for sensitive information. Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

btechprojects cipheralgorithm computerscienceprojects cryptography cryptoproject cybersecurity datasecurity mtechprojects securecommunication supercipher

Last synced: 11 Feb 2026

https://github.com/advanced-systems/security

This library provides classes and services for symmetric and asymmetric standard cryptographic algorithms based on the .NET cryptography system.

advanced-systems cryptography

Last synced: 14 Jan 2026

https://github.com/mokkunsuzuki-code/stage356

Stage356: Runtime Verification and Fail-Closed Execution Gate with Stage355 integrity binding, runtime decision enforcement, CI context detection, and PQC intent-only protection.

audit ci-cd cryptography cybersecurity evidence execution-gate fail-closed github-actions hash-chain integrity key-revocation key-status ml-dsa pqc qsp runtime-verification signature-verification supply-chain-security trust verification

Last synced: 23 Jun 2026

https://github.com/scarlet-oni/ransomware

A simple ransomware program that encrypts just one file

cryptography cyber-security cybersecurity openssl python python3 ransomware

Last synced: 15 Jun 2025

https://github.com/ddc/ddccryptography

Encode and Decode strings with Cryptography

cryptography ddccryptography decode decoder encode encoder python python-3 python3

Last synced: 11 Feb 2026

https://github.com/suwadith/cryptography-python

A simple Python-based one-time pad encryption implementation.

ciphertext cryptography encryption-decryption python

Last synced: 11 May 2026

https://github.com/abdo-essam/diffie-hellman-key-exchange

The code you provided appears to be an implementation of the Diffie-Hellman key exchange protocol between a client and a server. This protocol allows two parties to establish a shared secret key over an insecure channel.

client client-server cryptography diffie-hellman diffie-hellman-algorithm diffie-hellman-key server

Last synced: 15 Mar 2025

https://github.com/paulshpilsher/ed25519-key-generator

Public key generator using Edwards-curve Digital Signature Algorithm (EdDSA)

crypto cryptography eddsa eddsa25519 go golang public-key-cryptography

Last synced: 30 May 2026

https://github.com/cosmian/cloudproof_rust

The Rust Cloudproof Data protection Library

cloudproof cryptography

Last synced: 27 Feb 2026

https://github.com/adhupraba/fshare

FShare is a secure and robust file-sharing application that enables users to upload, share, and manage encrypted files.

cryptography django django-rest-framework encryption-decryption file-sharing reactjs security

Last synced: 12 Feb 2026

https://github.com/aeliot-tm/doctrine-encrypted-bundle

Doctrine Encrypted bundle permits to encrypt/decrypt separate columns of database via Doctrine column types.

ast cryptography decryption doctrine doctrine-extension doctrine-orm encryption php routines symfony-bundle

Last synced: 12 Feb 2026

https://github.com/bitcoin-evo/bitcoinevo

BitcoinEvo Core integration/staging tree

bitcoinevo c-plus-plus cryptocurrency cryptography p2p

Last synced: 03 Apr 2025

https://github.com/mthaler/cryptography

Cryptographic algorithms implemented in Rust

cryptography rust rust-library

Last synced: 09 Apr 2025

https://github.com/nikhilr612/isaacrs

No-std implementation of ISAAC PRNG

cryptography isaac isaac-64 no-std random-number-generator

Last synced: 03 Apr 2025

https://github.com/taimoorzaeem/fcrypt

A command line tool to encrypt and decrypt file using a symmetric key.

c cryptography encryption-algorithm encryption-decryption file file-encryption

Last synced: 04 Oct 2025

https://github.com/ametel01/tatsumaki

Token mixer for Starknet

cairo cryptography privacy starknet

Last synced: 28 Feb 2026

https://github.com/acestojanoski/key-forge

Effortlessly encrypt and decrypt text in an instant with our user-friendly, open-source tool.

aes aes-256 aes-256-gcm cryptography cryptography-tools decryption encryption opensource react vite

Last synced: 16 Apr 2026

https://github.com/alok-38/software-engineering-specialization

Explore a Career as a Software Engineer. Learn the basics of programming and software development

algorithms cryptography data-structures hashtable html-css-javascript java problem-solving

Last synced: 25 Mar 2025

https://github.com/egorgvo/sberbank_callback_async_cryptography

Python implementation of Sberbank signature verification using async cryptography

cryptography sberbank signature-verification

Last synced: 11 Mar 2026

https://github.com/glitchedpolygons/glitchaes.blazorwebapp

GlitchAES (say: "glitches") is a web-based (zero-knowledge, static client-side only) GUI that wraps AES-GCM.

aes cryptography decryption encryption gcm symmetric

Last synced: 14 Feb 2026

https://github.com/saikiranmatta/false-bottom

False Bottom, a deniable encryption algorithm.

cryptography deniable-encryption encryption

Last synced: 14 Feb 2026

https://github.com/projects-developer/top-cryptography-projects-with-source-code

Cryptography is the practice and study of techniques for secure communication by transforming plaintext. Top 10 Cryptography Projects Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video tutorials

aes-communication-security b-techprojects bca-projects communication computer-science-projects computerscienceprojects cryptography diffie-hellman-key-exchange final-year-projects finalyearprojects gif-malware-project m-techprojects mca-projects steganography super-cipher-projects triple-des-projects

Last synced: 07 Jan 2026

https://github.com/abhayagiri/raho

Python module for simple symmetric encryption built on cryptography

cryptography fernet python python2 python3

Last synced: 25 Mar 2025

https://github.com/ben854719/trade-transfer-workflow-optimizer

This AI portfolio tools securely analyzes asset allocation, sector exposure, and performance. Its graph compares real and predicted close prices, enhanced with sentiment indicators such as “Confident” and “Surprised.” An avatar assistant provides user guidance combining technical accuracy with intuitive explanations.

agentic-ai avatar cryptography emotion-analysis encryption gemini json langgraph langraph machine-learning-algorithms matplotlib mcp-server numpy opencv-python pandas python pytorch rs256 seaborn

Last synced: 15 Feb 2026

https://github.com/francislauriano/chatsoftex

Plataforma desenvolvida em Python que visa automatizar e agilizar o processo de avaliação de projetos de inovação tecnológica, utilizando inteligência artificial e critérios padronizados com base na Lei do Bem.

cryptography fernet firebase flask flask-jwt-extended hugging-face-transformers numpy openai pdfplumber postgresql pyjwt pymupdf-fitz pypdf2 python pytorch scikit-learn scipy spacy sqlalchemy tensorflow

Last synced: 03 Apr 2026

https://github.com/joseph-ogutu/expense-management-application

Crafted AI powered comprehensive full-stack expense management application. facilitating effortless expense tracking & management.

bootstrap channels cryptography django html javascript openai python websocket

Last synced: 16 Feb 2026

https://github.com/siterelenby/keyquorum

Shamir secret sharing daemon for distributed teams. Memory hardened, designed to prevent intercepting or handling another user's key or the secret itself, without jank or vulnerability points like shared tmux sessions.

cli cryptography cryptography-tools distributed-teams key-management linux rust secret-sharing security shamir shamir-secret-sharing

Last synced: 12 Jun 2026

https://github.com/dhruvsrikanth/communication-and-encryption-between-different-networks

A project a classmate and I undertook to better understand and develop end-to-end encryption between a client and server on a vulnerable network!

computer-networks cryptography decryption encryption end-to-end-encryption networks python

Last synced: 23 Apr 2025

https://github.com/scttnlsn/cryptopals

Cryptopals in Rust

cryptography cryptopals

Last synced: 07 Apr 2025

https://github.com/harmin-parra/x509-wrapper

Wrapper for the pyca/cryptography package to query attributes of X509 cryptographic objects in a fast and simple way

cryptography python python3 x509

Last synced: 12 Jun 2025

https://github.com/peterfritz/time

Get the current time, timezone, and a language-sensitive representation of the current time in the local timezone based on the user's IP. Create and validate signed date tokens.

cryptography date time

Last synced: 12 Jun 2025

https://github.com/projects-developer/diffie-hellman-key-exchange-algorithm-cryptography-project

This project implements the Diffie-Hellman Key Exchange Algorithm, a popular cryptographic protocol that enables two parties to establish a shared secret key over an insecure communication channel. Diffie-Hellman-Key Exchange Algorithum Project Includes Project Includes Source Code, PPT, Synopsis, Report, Documents, Base Research Paper & Video

btech-project computer-science-project cryptography diffie-hellman-key-exchange final-year-projects finalyearproject finalyearprojects key-exchange-public-key-cryptography mtechprojects private-key-cryptography secure-communication secure-key-exchange

Last synced: 01 Mar 2026

https://github.com/leotot4/zyra-crypto-wallet-mnemonic-seed-phrase-balance-checker

This repository features Zyra, a crypto wallet tool that includes functionality for checking balances using mnemonic seed phrases. It allows you to securely manage and verify cryptocurrency balances associated with various wallets.

balance balance-checker bip39 bitecoin blockchain crypto crypto-wallet cryptography ethereum hardware-wallet mnemonic mnemonic-phrase seed wallet

Last synced: 25 Mar 2025

https://github.com/alex-snd/vigener

🔓 The project is intended for convenient key recovery from the ciphertext obtained using the Vigenère cipher.

cryptography

Last synced: 29 May 2026

https://github.com/harish-balaji-b/password-manager

In developing a secure client-server model, we implement the Advanced Encryption Standard (AES) and a hashing algorithm from scratch. The AES implementation includes key expansion, key-mixing operations, and secure modes like Cipher Block Chaining (CBC). For hashing, we choose SHA-256 and ensure its resistant to common cryptographic attacks.

aes-encryption cbc cryptography pbkdf2 sha-256

Last synced: 09 Apr 2025

https://github.com/uofsc-fall-2022-math-587-001/homework5

Diffie-Hellman key exchange and ElGamal cryptosystem. Plus Shanks' algorithm for solving the discrete logarithm problem.

cryptography discrete-logarithm go latex math

Last synced: 12 May 2026

https://github.com/viveksyngh/merkletree

Merkle hash tree implementation in golang

cryptography golang merkle-proof merkle-tree

Last synced: 12 May 2026

https://github.com/jnbdz/cryptography-quickstarts

🔐 Cryptography | Quickstarts 🔐

cryptography quickstart quickstarts

Last synced: 02 Mar 2026

https://github.com/enkore/zignify

Re-implementation of OpenBSD signify(1) in Zig (first code in Zig)

crypto cryptography signify zig

Last synced: 25 Mar 2025

https://github.com/sambhu431/salt-based-encryption-and-decryption

Securely encrypt and decrypt files and folders using salt-based, password-protected methods. Protect your data from hacking, leakage, and theft.

cryptography datasecurity decryption encryption encryption-decryption fernet fernet-cryptography fernet-decryption fernet-encryption fernet-key pbkdf2 pbkdf2-hmac pythonen salt security

Last synced: 09 Apr 2025

https://github.com/filiprokita/tosha256

This is a Python script that prompts the user to enter a string of text and then calculates its SHA-256 hash using the hashlib library. The resulting hash is then printed to the console.

cryptography data-integrity hash hashing python security sha256 tosha

Last synced: 24 Mar 2025

https://github.com/hashlag/genc

Command line file encryption tool in GoLang

cryptography golang

Last synced: 12 Jul 2025

https://github.com/eroydev/bip39-rusty

Rust library for BIP-39 mnemonic system

bip39 bitcoin cryptocurrency cryptography rust

Last synced: 22 Feb 2026

https://github.com/pryority/merkle-next

WIP - I wanted to remake the example website from the Merkletree.js repo in Next.js

cryptography ethereum merkletreejs nextjs react tailwindcss

Last synced: 12 Apr 2026

https://github.com/pereirar3/cryptography-cipher

Simple and complex encryption algorithms in c++ [objective: learning] - IN UPDATE

cipher-algorithm cpp cryptography

Last synced: 04 Sep 2025

https://github.com/nvnx7/cryptopals-cryptography-cracks

Rust implementation of cracks of cryptopals challenges

challenge crypto cryptography rust

Last synced: 22 Dec 2025

https://github.com/viral32111/scrambler

A program to hide & protect messages for enhanced privacy.

c cipher cryptography encryption

Last synced: 09 Apr 2025

https://github.com/rdrahul123/books

Books must be read as deliberately and reservedly as they were written.

algorithms-and-data-structures blockchain books cryptography datastructures dbms machine-learning mongodb sql

Last synced: 12 Jun 2025

https://github.com/krisarmstrong/enigma-v300

> Complete collection of Enigma V300 option key algorithm implementations

c calculator ci-cd cpp cryptography encryption enigma fluke github-actions nettool network-testing option-keys python

Last synced: 04 Mar 2026

https://github.com/forgesworn/canary-kit

Deepfake-proof identity verification. Per-member spoken words, silent duress detection, encrypted group sync. Open protocol.

cryptography deepfake-detection duress-detection identity-verification minimal-dependencies nostr open-protocol pwa security typescript

Last synced: 01 Apr 2026

https://github.com/elamani-drawing/morseus

Morseus est une bibliothèque Rust permettant d'encoder et de décoder le texte en code Morse. Elle offre également la possibilité de jouer le code Morse en émettant des signaux sonores à l'aide du dispositif audio par défaut de votre système, ainsi que d'exporter le code Morse en fichiers audio WAV.

audio compression crates-io cryptography encoding morse morse-code rust rust-lang rustlang

Last synced: 02 Apr 2026

https://github.com/radriann21/passify

an password generator that allows to the user generate based on the options and copy the password

chakraui cryptography nextjs typescript zustand

Last synced: 12 Apr 2026

https://github.com/epicreach/tkey-web-authentication

Secure Go-based proxy server using TKey hardware for passwordless website authentication.

authentication cryptography daemon go proxy-server security-tools

Last synced: 04 Mar 2026

https://github.com/mokkunsuzuki-code/stage355

Stage355: Signature Key Status Verification and Revocation Enforcement Layer with signing-time validity checks, Stage354 ledger binding, fail-closed revoked-key rejection, and PQC intent-only protection.

audit cryptography cybersecurity ed25519 evidence fail-closed gpg key-revocation key-rotation key-status ledger ml-dsa pqc qsp signature-verification sigstore supply-chain-security transparency trust verification

Last synced: 23 Jun 2026