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: 2026-06-16 00:06:52 UTC
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https://github.com/rockingrohit9639/password-manager-mern

A Password Manager project created using the MERN stack

cryptography encryption-decryption mern mern-project password-manager safe

Last synced: 09 May 2025

https://github.com/amaitou/xorcry

Simple encryption tool designed to perform a bitwise XOR operation (XORing) on the contents of files with specific extensions in a given directory or file path. The XOR operation is executed using a user-defined key to encrypt the data.

crypter cryptography python3 ransomware xor xor-cipher

Last synced: 30 Jul 2025

https://github.com/marcoonroad/twostep

HOTP and TOTP algorithms for 2-step verification (for OCaml). :clock10: :closed_lock_with_key: :1234: :camel:

2-factor-authentication 2-step-verification authentication cryptography infosec ocaml ocaml-library one-time-password one-time-passwords security security-tools

Last synced: 07 May 2025

https://github.com/PeaceFounder/PeaceFounder.jl

Centralised E2E verifiable evoting via pseudonym braiding and history trees

cryptography evoting history-tree verificatum

Last synced: 06 Apr 2026

https://github.com/yaosiang/cryptography-course

建議開發者知道的密碼學知識

aes cryptography csprng ecc ecdsa hash kdf mac rsa typescript

Last synced: 12 Mar 2026

https://github.com/jef1056/riceteacatpanda

repo with challenge material for riceteacatpanda (2020)

ai artificial-intelligence artificial-intelligence-algorithms binary-exploitation computer-science computer-vision cryptography ctf ctf-challenges cyber-security cybersecurity data data-analysis data-analytics natural-language-processing neural-network neural-networks website

Last synced: 14 Jul 2025

https://github.com/cmeone/chia-utils

A set of JavaScript utilities to facilitate conversions for the Chia network

bech32 chia chia-blockchain chia-network cryptocurrency cryptography hashing

Last synced: 28 Jul 2025

https://github.com/stanac/EasyCrypto

Easily encrypt/decrypt data and generate/hash/validate passwords

cryptography decryption encryption password-hasher passwordgenerator random

Last synced: 04 May 2025

https://github.com/francisrstokes/aes-c

A (non-production) implementation of AES for educational purposes

advanced-encryption-standard aes c cryptography from-scratch

Last synced: 16 Mar 2026

https://github.com/onyb/littlebit

A Bitcoin library from scratch; in Python and Rust. 📦⛓️

bitcoin blockchain cryptography python rust

Last synced: 11 Apr 2025

https://github.com/mykeels/steganography

This tool lets you hide and retrieve text data to/from an image

cryptography steganography

Last synced: 14 Aug 2025

https://github.com/liquidsec/pyoracle2

A python-based padding oracle tool

cbc-mode crypto cryptography padding-oracle padding-oracle-attacks

Last synced: 30 Apr 2025

https://github.com/rahiel/id0-rsa.pub

Solutions to the security/cryptography problems at https://id0-rsa.pub

cryptography security

Last synced: 09 Jul 2025

https://github.com/propensive/gastronomy

Simple generically-derived cryptographic functions for Scala

cryptographic-digests cryptography digest encryption hash md5 scala sha2 sha256

Last synced: 17 Mar 2025

https://github.com/daira/tweedle

Generator and supporting evidence for security of the Tweedledum/Tweedledee pair of elliptic curves suitable for Halo

cryptography elliptic-curves mathematics sagemath

Last synced: 01 Feb 2026

https://github.com/tom25519/alkali

Safe Rust bindings to the Sodium cryptographic library

cryptography libsodium rust

Last synced: 17 Mar 2026

https://github.com/basilgregory/axkeystore

Secure store for your keys and passwords using your GitHub Private Repo as untrusted storage. Encryption happens at client side and no data pass through the wire unencrypted. It's just You and Your GitHub Private Repo.

argon2id cli cli-app cryptography git github keystore rust vault xchacha20-poly1305

Last synced: 01 Apr 2026

https://github.com/symbolicsoft/noiseexplorer

Online engine for reasoning about the Noise Protocol Framework.

cryptographic-protocols cryptography formal-methods formal-verification protocol-analysis protocol-verification symbolic-protocol-analysis

Last synced: 24 Apr 2026

https://github.com/cryspen/hacl-packages

The Cryspen HACL Distribution

aead cryptography decryption digest encryption formally-verified hashing hkdf hmac signatures

Last synced: 27 Mar 2026

https://github.com/adamlui/js-utils

⚡ Essential JavaScript libraries/utilities for Node.js and the web

api apis cli compiler converter cryptography css generator ip ipv4 javascript js-utils minification node npm password sass scripts scss utils

Last synced: 27 May 2026

https://github.com/KotlinCrypto/MACs

Message Authentication Code algorithms for Kotlin Multiplatform

cryptography cryptography-library hashing hashing-algorithm hashing-algorithms kotlin kotlin-multiplatform kotlin-multiplatform-library message-authentication-code

Last synced: 02 Apr 2025

https://github.com/imdea-software/homomorphic-authentication-library

HAL: A Library for Homomorphic Authentication

cryptography cryptography-library

Last synced: 23 Apr 2025

https://github.com/dryairship/online-election-manager

A cryptographically secure portal to manage online elections, created as a part of the Project Track for the course ESC101A.

client-side-cryptography cryptography elections gin-gonic golang mongodb online-election-system sjcl

Last synced: 14 Apr 2025

https://github.com/multiparty/oprf

Oblivious pseudorandom function over an elliptic curve

cryptography oblivious-hashing privacy-enhancing-technologies

Last synced: 11 Mar 2026

https://github.com/yangr0/cryptz

:lock: [ Multi Encryption / Decryption ] :unlock:

crypto cryptography ctf ctf-tools cyber-security cybersecurity decryption encryption hack hacking hacking-tool hacks pentest pentest-tool pentesting python python3 redteam security security-tools

Last synced: 12 Apr 2025

https://github.com/ironcorelabs/recrypt-wasm-binding

Bindings to be able to use recrypt-rs within a browser via WebAssembly.

cryptography proxy-re-encryption transform-encryption wasm webassembly

Last synced: 04 Feb 2026

https://github.com/aditisrinivas97/Crypto-Vinaigrette

Quantum-resistent asymmetric key generation tool for digital signatures.

cryptography digital-signature key-generation post-quantum-cryptography python rainbow-scheme security-tools uov

Last synced: 15 Nov 2025

https://github.com/aydinnyunus/python-kodlari

Python Projects

binary cryptography facebook fast-write fibonacci pascal password prime-numbers python python-3 python-library python-programming python-project python3 pythonprograms pythonproject pythonprojects sql transform weather-app

Last synced: 29 Apr 2025

https://github.com/tgalal/motoko-bitcoin

Bitcoin library for Motoko

base58 bitcoin cryptography hmac ripemd160 secp256k1

Last synced: 29 Jun 2025

https://github.com/mrdcvlsc/apa

A C++ library for big integers and dynamic precision floating-point

arbitrary-precision arbitrary-precision-arithmetic arbitrary-precision-integers big-integer big-number bigint biginteger bignum bignumber cplusplus cpp cryptography karatsuba large-integer large-number library math multi-precision multiprecision

Last synced: 23 Mar 2025

https://github.com/webankblockchain/wedpr-lab-java-sdk

Java SDK of WeDPR-Lab-Core; WeDPR即时可用场景式隐私保护高效解决方案核心算法组件通用Java SDK

blockchain crypto cryptography homomorphic-encryption mpc privacy sdk-java wedpr zkp

Last synced: 06 Jul 2025

https://github.com/p0dalirius/windows-cryptographic-and-hashing-algorithms-explained

Detailed explanation of Windows cryptographic algorithms, with examples and schemes.

cryptography windows

Last synced: 03 Sep 2025

https://github.com/covenantsql/blockchain-papers

Last synced: 09 Jul 2025

https://github.com/dsprenkels/sss-go

Go bindings for my shamir-secret-sharing library

cryptography shamir-secret-sharing

Last synced: 12 Jul 2025

https://github.com/jedisct1/simpira384

An AES-based 384 bit permutation.

aes crypto cryptography permutation

Last synced: 15 Apr 2025

https://github.com/archethic-foundation/libjs

Archethic Javascript SDK

archethic blockchain cryptography javascript transaction-chain

Last synced: 15 May 2025

https://github.com/jujuadams/sha-and-hmac

SHA and HMAC implementations for GameMaker Studio 2

crypto cryptography gamemaker gamemaker-s gms2 hmac sha

Last synced: 20 Feb 2026

https://github.com/silur/ecvrf

An elliptic curve verifiable random function

cryptography curve25519 dnssec ristretto vrf

Last synced: 16 Apr 2025

https://github.com/mk-fg/acme-cert-tool

Simple one-stop tool to manage X.509/TLS certs and all the ACME CA authorization stuff

acme-client certificates cryptography letsencrypt python security sysadmin tls tool web-pki x509

Last synced: 23 Apr 2025

https://github.com/bwesterb/argon2pure

Pure-python implementation of Argon2 – winner of the Password Hashing Competition

argon2 cryptography hashing python

Last synced: 07 May 2025

https://github.com/tankerhq/sdk-native

Tanker C++ / C encryption SDK

c c-plus-plus cryptography encryption end-to-end privacy sdk security tanker

Last synced: 09 Apr 2025

https://github.com/jasondrawdy/shellgen

Dynamic and extensible shell code generator with multiple output types which can be formatted in binary, hexadecimal, and the typical shellcode output standard.

cryptography dotnet dynamic generator library security shellcode utilities

Last synced: 22 Apr 2025

https://github.com/cyberark/slosilo

A Ruby interface to standard cryptographic primitives

conjbot-notify conjur core cryptography encryption

Last synced: 11 Mar 2026

https://github.com/andreypfau/curve25519-kotlin

A pure Kotlin/Multiplatform implementation of group operations on Curve25519.

cryptography curve25519 ed25519 edwards-curve kotlin kotlin-js kotlin-jvm kotlin-multiplatform kotlin-native montgomery-curve x25519

Last synced: 24 Apr 2025

https://github.com/tehmaze/confidentiality

:lock: Portable, secure by default cryptography

crypto cryptography cryptography-library go golang javascript javascript-library python python-library python3 ruby ruby-library

Last synced: 22 Mar 2025

https://github.com/paulveillard/cybersecurity-cryptography

A collection of awesome software, libraries, documents, books, resources and cool stuff about cryptography in Cybersecurity.

appsec aws-security azure-security bitcoin crypto cryptocurrencies cryptocurrency cryptocurrency-exchanges cryptography cyber-security cybercrime docker-security ethereum gcp-security ibm-security kubernetes-deployment nft-marketplace nfts security workload-security

Last synced: 10 Apr 2025

https://github.com/crate-crypto/clsag

Compact linkable ring signatures. A modification on MLSAG.

cryptocurrency cryptography monero ring-signature-scheme zero-knowledge

Last synced: 15 Apr 2025

https://github.com/pcw109550/my-ctf-challenges

🧩 Collection of CTF challenges written by me

blockchain cryptography ctf-challenges misc

Last synced: 10 Jul 2025

https://github.com/tomoima525/zkp-vote

Proof of concept dapp for zero-knowledge proof with Zokrates

cryptography dapp ethereum hardhat zksnarks zokrates

Last synced: 07 Apr 2025

https://github.com/juliacrypto/md5.jl

A performant, 100% native-julia MD5 implementation

cryptography hash-functions julia md5

Last synced: 13 May 2025

https://github.com/sajjon/k1

Swift wrapper around libsecp256k1 with API's like CryptoKit.

cryptography ecc ecdh ecdsa elliptic-curve-cryptography key-agreement publickey-recovery schnorr schnorr-signatures secp256k1 swift

Last synced: 30 Jan 2026

https://github.com/paritytech/bcts

TypeScript port of Blockchain Commons implementations: deterministic CBOR (dCBOR), Gordian Envelope for privacy-preserving data, Uniform Resources (UR), secret sharing (SSKR/Shamir), XID decentralized identities, provenance marks, LifeHash visual hashing, and FROST threshold signatures.

blockchain cbor cli cryptography dapps dcbor frost gordian-envelopes gstp hubert lifehash provenance-mark seedtool shamir sskr typescript uniform-resources xid

Last synced: 25 Apr 2026

https://github.com/aster-privacy/aster-mail

Cross-platform encrypted email client for Aster

cryptography email encryption end-to-end-encryption privacy

Last synced: 01 Jun 2026

https://github.com/rubo/flame

Flame is an ActionScript library that provides a number of useful UI controls, collections, cryptographic services, and utilities to work with the Flex SDK.

cryptography encryption

Last synced: 10 Feb 2026

https://github.com/htr-tech/0xtwin

Twin-Hex Cipher Encoder/Decoder

capture-the-flag cipher cipher-algorithms ciphertext cryptography ctf ctf-challenges ctf-tools hackthebox twin-cipher twin-hex

Last synced: 15 Apr 2025

https://github.com/virgilsecurity/virgil-sdk-cpp

Virgil Core SDK allows developers to get up and running with Virgil Cards Service API quickly and add end-to-end security to their new or existing digital solutions to become HIPAA and GDPR compliant and more.

cryptography encryption end-to-end-encryption gdpr hipaa pki sdk

Last synced: 04 Jul 2025

https://github.com/joshuaquek/quickencrypt

Easily generate RSA Public-Private Keypairs and use them for secure asymmetric one-way encryption and decryption! - npmjs.com/package/quick-encrypt

asymmetric-cryptography cryptography decrypt decryption encrypt encryption javascript nodejs npm-package rsa security

Last synced: 05 May 2025

https://github.com/davidbuchanan314/rc4

A python3 RC4 implementation that doesn't suck. (i.e. it's actually binary-safe...)

cryptography python python3 rc4 rc4-algorithm

Last synced: 15 Mar 2026

https://github.com/peacefounder/peacefounder.jl

Centralised E2E verifiable evoting via pseudonym braiding and history trees

cryptography evoting history-tree verificatum

Last synced: 21 Oct 2025

https://github.com/integrativesoft/crossprotecteddata

A DataProtect wrapper that uses DPAPI in Windows and AspNetCore.DataProtection in other platforms.

cryptography csharp dpapi encryption protected-data

Last synced: 11 Apr 2025

https://github.com/ChristopherBilg/ri2p

Rust implementation of the i2p client/server/router protocols

anonymity cryptography distributed encryption i2p networking p2p-clients p2p-http p2p-network rust

Last synced: 13 Jun 2025

https://github.com/yuzushioh/cryptoethereumswift

Ethereum cryptography implementations for iOS framework

blockchain cryptography ethereum

Last synced: 10 Mar 2026

https://github.com/lucaangioloni/image_steganography

Steganography applied to conceal small files inside a PNG image.

cryptography encoded-strings encoding image-steganography signal-processing

Last synced: 23 Apr 2025

https://github.com/azadkuh/qpolarssl

a thin Qt5/c++11 wrapper around fantastic mbedtls (aka polarssl) cryptographic library.

cross-platform cryptography mbedtls qt qt5

Last synced: 07 Oct 2025

https://github.com/defeo/isogenies.bib

A BibTeX collection on Isogeny-based Cryptography

cryptography elliptic-curves isogenies

Last synced: 09 Mar 2026

https://github.com/agent-receipts/obsigna

Agent Receipts — cryptographically signed audit trails for AI agent actions. Protocol spec, SDKs (Go, TypeScript, Python), and MCP proxy.

agent-receipts ai ai-agents audit cryptography ed25519 golang mcp model-context-protocol python receipts security typescript verifiable-credentials w3c-vc

Last synced: 12 Jun 2026

https://github.com/demining/dao-exploit

Cryptanalysis of the DAO exploit & Multi-Stage Attack

attack cryptanalysis crypto cryptocurrency cryptography dao ethereum ethereum-contract exploit exploit-development hacking

Last synced: 26 Jun 2025

https://github.com/christopherbilg/ri2p

Rust implementation of the i2p client/server/router protocols

anonymity cryptography distributed encryption i2p networking p2p-clients p2p-http p2p-network rust

Last synced: 14 Apr 2025

https://github.com/bocaletto-luca/files-compressor-encryption

Files-Compressor-Encryption is a Python-based tool for compressing and encrypting files, ensuring efficient storage and secure data protection. Ideal for privacy-focused applications.

compression cryptography decryption encryption encryption-decryption file-management open-source privacy python security-tools storage-optimization

Last synced: 03 Aug 2025

https://github.com/houarizegai/cryptography

Cryptography algorithms implemented in Java.

algorithms cryptography decryption encryption java symmetric

Last synced: 10 Apr 2025

https://github.com/restuwahyu13/jwt-transform

Transform your real jwt token into fake jwt token.

algorithm base64 browser cryptography decrypt encrypt hex javascript jwt jwt-transform node nodejs security security-tools typescipt typescript

Last synced: 07 May 2025

https://github.com/sebastienrousseau/password-generator

A fast, simple, and powerful open-source utility tool for generating strong, unique, and random passwords. The Password Generator supports various types of passwords including base64-encoded, memorable, and complex strong passwords.

crypto cryptography dictionary dictionary-tools generator javascript memorable-passphrases memorable-passwords nodejs npm passgen passgenerator password password-generator passwords security security-tools yeoman

Last synced: 16 Mar 2025

https://github.com/dev-aniketj/programming-books

In this Repo, you will get all the Books which is available on Internet.

algorithms architecture artificial-intelligence blockchain books cloud-computing computer-science-fundamentals cryptography data-structures data-structures-and-algorithms database-management deep-learning ebooks functional-programming game-development machine-learning mobile-app-development object-oriented-programming system-design web-development

Last synced: 04 Jan 2026

https://github.com/joaaoverona/venusscript

A dynamic, interpreted, scripting language written in Java.

ast async asynchronous compiler cryptography dynamic extensible java java-8 java-library java8 language runtime-injections script scripting scripting-engine scripting-language scripting-languages

Last synced: 14 Apr 2025

https://github.com/terl/hydride-java

Libhydrogen implemented in Java.

c cryptography encryption hash hashing java java-8 jna shared-library

Last synced: 30 Apr 2025

https://github.com/13xforever/psn-pkg-validator

Tool to check PS3 PSN PKG integrity

cryptography elliptic-curves hmac

Last synced: 05 Apr 2025

https://github.com/csivitu/ctf-write-ups

Write-ups for CTF challenges.

cryptography csivitu ctf ctf-challenges ctf-writeups cybersecurity forensics hackthebox hacktoberfest hacktoberfest2021 pwn reverse-engineering steganography web

Last synced: 01 Nov 2025

https://github.com/tougee/ed25519

Dart port of ed25519 from Go Cryptography ed25519

cryptography ed25519 eddsa

Last synced: 19 Mar 2025

https://github.com/elichai/ecc-secp256k1

Elliptic curve operations over secp256k1 *not for production*

cryptography ecdsa rust schnorr secp256k1

Last synced: 18 Mar 2025

https://github.com/SNUCP/MKTFHE

Implementation of Multi-Key TFHE [KMS22]

cryptography homomorphic-encryption mkhe multi-key-homomorphic-encryption tfhe

Last synced: 06 Apr 2026

https://github.com/karthikuj/7uring

An advanced cryptography tool for hashing, encrypting, encoding, steganography and more.

cryptography encoding encryption hashing steganalysis steganography

Last synced: 18 Mar 2025

https://github.com/arkworks-rs/ivls

Implementation of incrementally verifiable ledger system

blockchain cryptography ledger rust snark

Last synced: 26 Jun 2025

https://github.com/maymeow/maymeow.cryptography

🔐 Wrapper arround .NET Cryptography library

cryptography csharp dotnet dotnet-core dotnet-standard hacktoberfest hacktoberfest2021 nuget-package

Last synced: 12 Apr 2025

https://github.com/griffinscribe-llc/clojure-aes

Pure Clojure implementation of the Advanced Encryption Standard (AES) for encryption and decryption using 128, 192, and 256 bit keys based on FIPS Publication 197.

aes-encryption clojure cryptography

Last synced: 18 Jun 2025