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/cmason3/vaulty

Vaulty in Python - Encrypt/Decrypt with ChaCha20-Poly1305

chacha20-poly1305 crypto cryptography ecdh ecies eddsa encryption-tool python scrypt

Last synced: 26 Jul 2025

https://github.com/p3t3r67x0/vigenere_cipher

Simple programm to encrypt or decrypt a vigenere cipher text. This tool might be handy for some CTF games.

crypto cryptography ctf ctf-tools python vigenere-cipher

Last synced: 21 Jul 2025

https://github.com/synacktraa/vigenere-cipher

Small and portable Vigenere Cipher encoder and decoder cli based tool written in C.

c-language cryptography decryption encryption terminal-based vigenere-cipher

Last synced: 23 Jul 2025

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

Verifiable Homomorphic Encryption

cryptography

Last synced: 15 Jan 2026

https://github.com/erhant/arithmetic-circuits

Moda Palas Blackboard Cryptography II - Arithmetic Circuits & R1CS

circuits cryptography qap r1cs rust

Last synced: 18 Feb 2026

https://github.com/notadminn/ethwallethunter

EthWalletHunter generates random Ethereum wallets, checks their transaction history and balance, and logs "interesting" wallets with activity or balance. It's optimized for performance with multithreading and system resource monitoring. Intended for educational and research purposes only.

address-checker brute-force cryptography ethereum ethereum-api ethereum-tools mnemonic mnemonic-cracker mnemonic-generator password-cracker private-key wallet-cracker wallet-generator

Last synced: 10 Jul 2025

https://github.com/ashrockzzz2003/vault_007

One place to manage all your passwords!

aes blockchain cbc cipher cryptography flutter isar material-design offline-app password-generator password-manager security vault

Last synced: 08 Mar 2026

https://github.com/actuallyachraf/algebra

A literate :pencil: implementation of algebraic primitives for cryptography and algebraic applications :alembic:

algebra bulletproofs cryptography elliptic-curve-arithmetic elliptic-curve-cryptography finite-fields learning-by-doing pairings polynomials primitives schnorr-signatures

Last synced: 02 Feb 2026

https://github.com/manelli/ex_bcrypt

Elixir wrapper for the OpenBSD bcrypt password hashing algorithm

bcrypt cryptography elixir password security

Last synced: 20 Jun 2025

https://github.com/sfuhrm/saphir-hash

Cryptographic message digest algorithms as a Java library with standard JCA adapters

crypto crypto-library cryptography cryptography-library cryptohash digest hash hashing hashing-algorithms java library md5 messagedigest ripemd160 sha1 sha2 sha256 tiger

Last synced: 05 Oct 2025

https://github.com/hegdepavankumar/cipher-encryption-decryption

Cipher Encryption/Decryption This project is a simple implementation of the cipher encryption and decryption algorithm using JavaScript, HTML, and CSS. The cipher is a substitution cipher that replaces each letter in the plaintext with a letter a certain number of positions down the alphabet.

cipher cipher-algorithms cryptography encryption-algorithms encryption-decryption hashing-algorithm networking-concepts password security

Last synced: 03 Aug 2025

https://github.com/phayes/fdh-rs

Full Domain Hash library for rust

blind-signatures cryptography full-domain-hash hash

Last synced: 17 Mar 2026

https://github.com/bytemare/crypto

Abstracted prime-order elliptic curve groups in Go.

cryptography elliptic elliptic-curves go hash-to-curve nist p256 p384 p521 prime-order-group rfc9380 ristretto255

Last synced: 10 Apr 2025

https://github.com/kosasih/quantum-mesh

A cutting-edge Git repository for developing advanced cryptographic protocols and blockchain integration for Pi Network, leveraging quantum computing principles for unparalleled security and efficiency.

cryptography protocol protocol-oriented-programming

Last synced: 08 Mar 2026

https://github.com/ocdbytes/keylogger-python

Keylogger made with python including mailing and encryption services to get the user info and keylogs in a formated way.

cryptography encryption executable keylogger python3

Last synced: 19 Mar 2025

https://github.com/slowli/secret-tree

Hierarchical secret derivation with Blake2b and RNGs

cryptography key-derivation

Last synced: 22 Mar 2025

https://github.com/tynes/nameswaps

Decentralized Exchange Infrastructure for Handshake Names

bitcoin blockchain cryptocurrency cryptography handshake peer-to-peer

Last synced: 29 Apr 2026

https://github.com/xscriptorcode/xkyber_crypto

xKyberCrypto post-quantum encryption solutions in flutter based on the Kyber algorithm.

crypto cryptography cryptography-algorithms dart-package flutter-crypto kyber kyber-algorithm library post-quantum-cryptography public-key-encryption security xkyber

Last synced: 11 Apr 2025

https://github.com/sc0vu/js-keccak-tiny

Keccak tiny emscripten binding in javascript, including SHA-3/Keccak/Shake hash function.

cryptography hash keccak keccak-tiny sha3 shake wasm webassembly

Last synced: 13 Apr 2025

https://github.com/opensuse/wardstone

Assess compliance for cryptographic keys.

certificates cryptographic-keys cryptography google-summer-of-code gsoc open-suse opensuse rust security security-audit security-automation security-tools suse x509

Last synced: 17 Aug 2025

https://github.com/dstein64/lc4

An implementation of ElsieFour (Alan Kaminsky 2017).

cryptography elsie-four lc4

Last synced: 20 Mar 2025

https://github.com/datumbox/vernamveil

VernamVeil: A Function-Based Stream Cypher

blake3 cryptography python

Last synced: 25 Jun 2025

https://github.com/mbarkt3sto/mb-security-dll

A DLL library for (C#.NET ) helping you to Encrypt & Decrypt data

0x0b byte-array cryptography cryptography-library csharp csharp-library decrypt-data decryption-model dll-library dotnet dotnet-library encrypted-data encryption-operation information-security initialization-vector mb-security-dll

Last synced: 09 Jul 2025

https://github.com/cedws/ki-keyring

Utility for ejecting/injecting sets of obfuscated public keys from/into WizardGraphicalClient binaries

cryptography go reverse-engineering

Last synced: 05 May 2025

https://github.com/juliacrypto/krypto.jl

A futuristic crypto library. In Julia. [OLD]

cryptography decryption deprecated-repo ecc encryption julia pqc rlwe rsa

Last synced: 13 May 2025

https://github.com/anmol-singh-jaggi/sha2_512

:lock_with_ink_pen: An implementation of SHA-2 hash function with a digest size of 512 bits

c-plus-plus cryptography digest hash

Last synced: 26 Mar 2025

https://github.com/sug0/git-signify

Harness the power of signify(1) to sign arbitrary git objects

cryptography git openbsd rust security signature signify

Last synced: 07 May 2025

https://github.com/codiepp/elykseer-base

cryptographic data archive; written in F#; envisaged to stay another 10 years

archive cli cryptography data distributed-storage dotnet fsharp longterm-storage

Last synced: 19 May 2026

https://github.com/viniciusfinger/python-blockchain

Exploring the foundational concepts of blockchain with this simple Python implementation. This project demonstrates the core principles of blockchain, including mining, nonce, SHA-256 hashing, and proof of work. 🧱⛓️

blockchain blockchain-technology cryptocurrency cryptography proof-of-work python

Last synced: 12 Apr 2025

https://github.com/shagege/blackbox

Surveillance tool using a permissionless blockchain

blockchain cryptography distributed-ledger p2p proof-of-work python

Last synced: 18 Aug 2025

https://github.com/64/kaiser

Classical cryptanalysis tool

caesar-cipher cipher classical-cipher classical-cryptography crypto cryptography rust

Last synced: 06 May 2025

https://github.com/malisha4065/basic-cryptography

Basic Cryptography Concepts

cryptography hashing javascript nodejs

Last synced: 02 May 2026

https://github.com/jsign/kzg-ceremony-test-vectors

Ethereum KZG ceremony test vectors using the reference implementation

cryptography ethereum kzg powers-of-tau

Last synced: 04 Apr 2025

https://github.com/corvuscodex/multithread-polkadot-brute-force

Nodejs script that generates random private keys for the Polkadot blockchain and checks if the corresponding public address is in a list of addresses stored in a file named ‘data.txt’. If a match is found, the script logs the public address and saves the wallet and its private key (seed) to a file named ‘match.txt’.

bruteforce crack crypto cryptocurrency cryptography javascript nodejs polkadot polkadot-bruteforce polkadot-wallet seed seed-cracking wallet-bruteforce

Last synced: 13 Apr 2025

https://github.com/quyxishi/ethanium

XChaChaPoly1305-Argon2id cli, built on cryptopp & libsodium

argon2id cli cryptography windows xchacha20-poly1305

Last synced: 15 May 2026

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

Feistel cipher implementation in Python for format-preserving encryption

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

Last synced: 09 Oct 2025

https://github.com/sdrapkin/securitydriven.winter

Cloud-Scale Cryptography.

aead aes-gcm cryptography gcm streaming

Last synced: 13 Apr 2025

https://github.com/battleoverflow/encrypt-it

🔐 Simple password generator offering various encryption methods.

cryptography encoding encryption python

Last synced: 15 Jun 2025

https://github.com/cuhsat/spritz.c

Spritz cipher implementation in ANSI C.

algorithm ansi-c c cryptography spritz

Last synced: 12 Apr 2025

https://github.com/cflems/pk

Penguin's Kiss: Asynchronous Command and Control software + multi-client + encrypted + terminal emulation

c2 command-and-control cryptography penguins-kiss pk remote-shell

Last synced: 10 Jan 2026

https://github.com/kiooku/cryptography-notebook

Cryptography Notebook is a repository containing some of the cryptographic implementations I have done for learning purposes.

assymetric-encryption commitment-schemes cryptography digital-signature double-ratchet-algorithm e2ee ggh hkdf hmac identification-scheme one-time-pad post-quantum-cryptography public-key-cryptography rsa signal x3dh zero-knowledge-proof

Last synced: 23 Apr 2025

https://github.com/mgit-at/mqv

Package mqv implements MQV ECC as described in "NIST Special Publication 800-56A Revision 3".

cryptography cryptography-algorithms cryptography-library golang golang-package

Last synced: 09 Mar 2026

https://github.com/delagen/cadesplugin

CryptoPro EDS Browser plug-in typescript implementation

cadesplugin cryptography cryptopro gost3411-2012

Last synced: 16 Mar 2026

https://github.com/jedisct1/as-crypto

api assemblyscript bindings crypto cryptography wasi wasm webassembly

Last synced: 09 May 2026

https://github.com/linariaworks/mephi

Proof of concept Limbus Company server reimplementation.

api clojure cryptography game-server http-server limbus-company private-server project-moon unity web-server

Last synced: 04 Mar 2025

https://github.com/lukasz-zimnoch/ipfs-market

Example repository intended to demonstrate a simple digital goods trading system powered by Ethereum smart contracts, IPFS file system and some basic cryptographic algorithms.

blockchain cryptocurrency cryptography ethereum go ipfs solidity

Last synced: 14 Apr 2026

https://github.com/fpoirotte/cryptal

Cryptography Abstraction Layer for PHP

abstraction crypto cryptography layer php

Last synced: 24 Mar 2025

https://github.com/nmrr/nitrokeyhsm-cheatsheet

A cheat sheet of PKCS11 command to use Nitrokey HSM 2 (or other PKCS11 HSM)

cryptography hardware-security-module hsm pkcs11 smartcard

Last synced: 03 Jan 2026

https://github.com/intob/godave

P2P KV store

communication cryptography kv-store p2p privacy udp

Last synced: 21 Feb 2026

https://github.com/ltonetwork/seasalt

NaCl compatible cryptography library using Bouncy Castle (Java)

cryptography java

Last synced: 14 Jan 2026

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

Zero-knowledge server for secure storage and transfer of E2E encrypted data.

chat communication cryptography data-transfer decryption e2ee end-to-end-encryption files messages messaging privacy privacy-protection private privmx secure security simplito storage thread zero-knowledge

Last synced: 19 Apr 2025

https://github.com/dmamakas2000/cryptanalysis-python

In this project, we experiment with the use of diverse cryptographic algorithms. First, we attempt to encrypt a plaintext message using the Vigenère Algorithm and a fixed-length encryption key. Afterward, we experiment with the decryption of the produced cipher using Kasiski's Method, as well as the Index of Coincidence statistical test.

cryptography index-of-coincidence jupyter-notebook kasiski-test python vigenere-cipher

Last synced: 18 Feb 2026

https://github.com/legend2ks/rapidsum

Checksum calculator and verifier tool

checksum checksum-calculator crc32 cryptography hashing md5 sha1 utilities

Last synced: 28 Apr 2026

https://github.com/aegis-aead/aegis-jasmin

An implementation of AEGIS in the Jasmin programming language.

aead aegis aegis-128x2 aegis-256x2 aegis128l aegis256 cipher cryptography jasmin

Last synced: 11 Mar 2026

https://github.com/omiyagames/omiya-games-cryptography

Unity package containig a collection of cryptography-related tools.

cryptography omiya-games openupm unity unity-asset unity-editor unity-scripts unity2d unity3d

Last synced: 26 Jan 2026

https://github.com/towerism/stegosaurus

A steganography tool written in rust

bitmap bmp cli cryptography image image-processing png steganography

Last synced: 10 Jun 2025

https://github.com/chardoncs/libpgfe

Experimental cryptographic & OTP library

base-encoding cryptographic-library cryptography hash hotp otp otp-library sha totp

Last synced: 12 Mar 2025

https://github.com/elydre/sun-breaker

Module python de chiffrement avec perte

cryptography hashing

Last synced: 18 Jan 2026

https://github.com/ericksumargo/pin

Built over Jetpack's EncryptedSharedPreferences API with less verbose syntax, efficient read/write mechanism, complex object and null default value support with compile time safety

coroutines cryptography jetpack kotlin sharedpreferences

Last synced: 09 Oct 2025

https://github.com/lunes-platform/ed25519-axolotl

📦 Ed25519-like signatures with X25519 keys, Axolotl-style.

axolotl blockchain crypto cryptocurrency cryptography ed25519 ethereum lunes

Last synced: 27 Oct 2025

https://github.com/0xdeafcafe/cypher-swift

Cipher algorithm to encode data into Taylor Swift lyrics

cipher ciphers cryptography cypher taylor-swift

Last synced: 24 Mar 2025

https://github.com/dorssel/dotnet-aes-extra

.NET Standard 2.0 implementation of AES-CTR, AES-CMAC, SIV-AES (aka AES-SIV), AES-CMAC-PRF-128 (aka PRF_AES128_CMAC), and PBKDF2-AES-CMAC-PRF-128.

aes aes-cmac aes-cmac-prf-128 aes-cmac-siv aes-ctr aes-ctr-mode aes-siv cmac cryptography dotnet dotnet-standard pbkdf2-aes-cmac-prf-128 siv siv-aes siv-mode

Last synced: 09 Apr 2025

https://github.com/leplusorg/docker-crypt

Multi-platform Docker container with utilities to cipher/decipher/sign data (gnupg, openssl, age, jose, xmlsec...).

cipher crypto cryptography decipher decrypt decryption digital-signature docker docker-image dockerfile encrypt encryption encryption-decryption hmac

Last synced: 11 Jun 2026

https://github.com/jpkusumi/greenfieldpqc

Side step quantum threats. Level up your encryption. Future proof your code. This cryptographic library for .NET development includes NIST standardized cryptographic primitives and Kusumi-512, a novel stream symmetric cipher with a 512 bit key size for enhanced quantum resistance.

cipher code cryptography csharp dotnet encryption future-proof green-field kusumi library package post-quantum pqc quantum-resistant quantum-safe streaming symmetric

Last synced: 06 Feb 2026

https://github.com/ringsnetwork/whitepaper

This repo is about whitepapers of rings network, you can find tex sources and compiled files here.

crypto cryptography dht paper pos

Last synced: 18 Jan 2026

https://github.com/ricky-ultimate/rust-rsa-encryption

A rust program to simulate RSA encryption & decryption operations on a small scale

cryptography rsa-encryption rust rust-lang

Last synced: 23 May 2026

https://github.com/avivsinai/telclaude

Secure Telegram-Claude bridge with LLM-based command screening and tiered permissions

ai-agent anthropic claude cryptography docker isolation llm llm-security permission-tiers sandbox security telegram-bot typescript

Last synced: 28 May 2026

https://github.com/valerauko/csele

A library to handle ActivityPub-related crypto needs.

activitypub clojure crypto cryptography federation fediverse hacktoberfest

Last synced: 09 Oct 2025

https://github.com/aead/blake2b

The BLAKE2b hash algorithm as defined in RFC 7693

blake2b blake2b-hash-algorithm cryptography go

Last synced: 15 Mar 2025

https://github.com/dedipresta/scala-crypto

Dependency free implementation of cryptographic hash functions for Scala and Scala.js

cryptography scala scalajs sha256

Last synced: 14 Jan 2026

https://github.com/cosmian/mpc_join

CipherCompute: Blind Join for Confidential Data Science and Federated Learning using MPC

confidential-computing cryptography distributed-computing multiparty-computation

Last synced: 15 Apr 2025

https://github.com/wildonion/thecry

🥲 my whole knowledge of low level coding, decrypting, decompiling and shellcode injection

aes-256 cbc-aes-encryption cryptography decompilation decryption-algorithm shellcode

Last synced: 27 Feb 2025

https://github.com/shantanu66/cryptchat

A Desktop Application made using Tkinter framework in Python for Text Chatting between indivisuals or groups which is end to end encrypted using symmetric cyrptography algorithms.

aes-encryption cryptography desktop-application flask-api mongodb python tkinter

Last synced: 07 Oct 2025

https://github.com/w3c/vc-di-quantum-resistant

Data Integrity Quantum Safe Cryptography Suite

cryptography data-integrity quantum vc verifiable-credentials w3c

Last synced: 29 May 2026

https://github.com/damianmorozov/examplecrypt

Examples of crypting algorithms

crypto cryptography

Last synced: 30 Oct 2025

https://github.com/lumarans30/astralsafeserver

AstralSafe server with Node.js

aes cryptography expressjs nodejs quantum-randomness

Last synced: 05 May 2026

https://github.com/radkomih/cryptography-resources

Cryptography related resources

cryptography knowledge-proofs mathematics number-theory zero-knowledge zero-knowledge-proofs zkp

Last synced: 04 Feb 2026

https://github.com/vineethsai/maif

Cryptographically-secure, auditable file format for AI agent memory with provenance tracking

ai ai-agent-tools ai-agents-framework cryptography

Last synced: 13 Jan 2026

https://github.com/nccgroup/pasta-curves

Provides the Pasta curves: Pallas, Vesta and their field elements Fp and Fq.

cryptography elliptic-curve-cryptography elliptic-curves

Last synced: 26 Apr 2025

https://github.com/markus-beuckelmann/aescrypt

aescrypt is a small command line tool to encrypt/decrypt files and directories with the well-established AES-256-CBC algorithm.

aes-encryption aescrypt cryptography docopt pycrypto python

Last synced: 25 May 2026

https://github.com/qantik/ratcheted

Performance Survey of Several Ratcheted Key-Agreement and Messaging Protocols

benchmark cryptography go messaging ratchet

Last synced: 23 Mar 2025

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

Multi purpose cryptography tool

crypto cryptography typescipt

Last synced: 05 Oct 2025

https://github.com/messsimo/crypto-search

App for Crypto House which show live crypto coin information

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Last synced: 25 Feb 2026

https://github.com/cs-joy/cryptography

about cryptography

cryptography graphein hidden secret study to-write

Last synced: 23 Jan 2026

https://github.com/hongyanwang/crypto-lab

Golang implementation of multiple crypto protocols

cryptography golang

Last synced: 21 Feb 2026

https://github.com/yds12/guarakapa

Password manager for the terminal.

cli command-line cryptography password password-manager rust terminal tui

Last synced: 10 Apr 2025

https://github.com/hmxustin/pybchain

Реализация блокчейна, работающего по протоколу PoW

blockchain cryptocurrency cryptography equicoin

Last synced: 26 Jan 2026

https://github.com/makemake-kbo/macrypt

Macrypt is a research blockchain built completely from scratch.

blockchain crypto cryptocurrency cryptography csharp dotnet-cli proof-of-work

Last synced: 13 Jul 2025

https://github.com/OmiyaGames/omiya-games-cryptography

Unity package containig a collection of cryptography-related tools.

cryptography omiya-games openupm unity unity-asset unity-editor unity-scripts unity2d unity3d

Last synced: 25 Apr 2025

https://github.com/2140-dev/swiftsync

SwiftSync node and underlying crates

bitcoin cryptocurrency cryptography peer-to-peer

Last synced: 29 Aug 2025

https://github.com/tteeoo/sest

🔑 A local command-line based password manager using AES-256 encryption.

command-line cryptography encryption go golang password-manager

Last synced: 17 Feb 2026

https://github.com/binbash23/p

p - The password manager by Jens Heine <binbash@gmx.net>

cloud cryptography dropbox encryption manager password password-manager password-store pbkdf2 python secure

Last synced: 23 Mar 2025

https://github.com/carlodepieri/vcrpy-encrypt

Encrypt vcrpy cassettes so they can be safely kept under version control.

cryptography python testing unit-testing vcrpy

Last synced: 13 Oct 2025

https://github.com/demining/coingecko-agent-ftpupload

Coingecko & Agent Ftpupload create beautiful crypto wallet addresses, but keep the private key safe

attack bitcoin bitcoin-wallet blockchain btc cryptocurrencies cryptography ecdsa ecdsa-cryptography ecdsa-signature privatekey privatekeygenerator privatekeys secp256k1 vulnerabilities vulnerability

Last synced: 03 May 2025

https://github.com/oversys/pypass

A password manager written in Python. Data is encrypted using AES-256-GCM and the key is derived using PBKDF2-HMAC-SHA512.

aes-256 aes-256-gcm aes-encryption aes-gcm aes256-gcm cryptography password-manager pbkdf2 pbkdf2withhmacsha512 python sha-512 sha512

Last synced: 30 Apr 2025

https://github.com/wolframalph/dh

Diffie-Hellman key exchange implementation in Go

cryptography diffie-hellman golang

Last synced: 02 Jul 2025

https://github.com/zeyadetman/image-textsteganography

🖼 An image steganography by converting the image into text of pixels and use the LSB to hide the ciphered text that encrypted by The Caesar cipher Algorithm (Cryptography). The project decrypt the image by loading it, converting the pixels’ digits and break the LSB.

aes caesar-cipher cipher-algorithms counteributors cryptography cs-projects decryption encryption image-steganography

Last synced: 27 Sep 2025

https://github.com/xannythepleb/pycrypt

A rudimentary encryption program written in Python. Plan to add a lot more functionality soon. Please note this is an unaudited hobby project! If security is vital, use Signal or PGP.

blake2b chacha20-poly1305 cryptography encryption-tool python-encryption python3