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: 2026-06-23 00:06:53 UTC
- JSON Representation
https://github.com/thomasthaddeus/algorithmselector
Explore our extensive Algorithms Repository, featuring a diverse range of algorithms from computational methods to data structures, cryptographic techniques, and AI. Ideal for education, research, and practical application, each algorithm is well-documented, tested, and optimized for performance and readability.
ai algorithms computational-algorithms computer-science cryptography data-compression data-structures educational-resource game-theory graph-theory machine-learning network-flow open-source optimization python
Last synced: 01 Mar 2026
https://github.com/cryptpad/blueprints
CryptPad research & development repository
algorithms cryptography cryptpad diagrams research
Last synced: 01 Mar 2026
https://github.com/davidbuchanan314/roll13
an (unfinished) TLSv1.3 client in pure python, hand-rolled from first principles.
aes aes-gcm cryptography hmac hmac-sha256 python python3 secp256r1 sha256 tls tls13
Last synced: 22 Aug 2025
https://github.com/smaranjitghose/pyconfidentiality
Adding secrecy to your emails with RSA
cryptography email-sender python rsa smtp
Last synced: 03 Sep 2025
https://github.com/saeed0xf/black-hat-ctf
This CTF event was organised by Data Science analytics and Cyber Security club at the annual Tech Fest Prajyukttam 🎆, Assam Don Bosco University 🎓
binary-exploitation capture-the-flag cryptography ctf ctf-challenges ctf-tools digital-forensics web-exploitation website
Last synced: 01 Mar 2025
https://github.com/darconeous/msecret-rust
Tool for deriving various types of keys from known symmetric secrets.
command-line-tool cryptography ecc-cryptography key-derivation passphrase rsa-cryptography rust secret-sharing
Last synced: 19 Jan 2026
https://github.com/anvilco/node-encryption
RSA and AES Encryption helpers
aes cryptography encryption js node rsa
Last synced: 04 Jul 2025
https://github.com/sepandhaghighi/integer-squaring
Integer Squaring Algorithm
algorithm cryptographic cryptography integer-arithmetic integer-squaring multiplication product-scanning squaring
Last synced: 15 Oct 2025
https://github.com/raymondfx/uptechafrica
UpTechAfrica East Africa Blockchain Hackathon - Whistleblower Solution
blockchain cryptography whistleblowing
Last synced: 11 Mar 2025
https://github.com/dinochiesa/apigee-custompolicy-rsacrypto
This is a custom Apigee policy, implemented in Java, that performs RSA Encryption and Decryption of data or message payloads, or RSA signing of data or message payloads, or verification of such signatures.
Last synced: 10 Jun 2025
https://github.com/ntdls/talkster
Secure chat instant messaging server and client, offering multi-layered peer-to-peer encryption.
communication cryptography privacy security
Last synced: 21 Apr 2026
https://github.com/h-alice/python-ecc-keyexchange
A simple PoC for ECC key exchange in Python.
cryptography elliptic-curve-cryptography python security
Last synced: 12 Oct 2025
https://github.com/dineshssdn-867/cryptography
Although there are different methods to encrypt and decrypt messages, we'll focus on a linear algebra-based cipher, the Hill cipher, which uses a matrix as a cipher to encode a message or an image, and it's extremely difficult to break when a large matrix is used.
colab-notebook cryptography hill-cipher linear-algebra matrix-multiplication
Last synced: 26 Oct 2025
https://github.com/protdos/zyphor
Zyphor: A quantum-safe, fully anonymous chat protocol ensuring complete security and metadata protection.
anonymity chat cryptography e2ee encryption messaging metadata perfect-forward-secrecy post-quantum-cryptography privacy protocol security zero-knowledge zero-trust
Last synced: 02 Mar 2026
https://github.com/pmuens/time-lock-puzzle
Time-Lock Puzzle schemes implemented in Go and compiled to WebAssembly
cryptography encryption homomorphic-encryption homomorphic-time-lock-puzzle time-lock time-lock-puzzle
Last synced: 15 May 2025
https://github.com/mrdcvlsc/password-manager
A simple online password manager web application with demo deployed in render.com
aes better-sqlite3 cipher confidentiality cryptography css data-protection decryption encryption fastify full-stack html javascript nodejs online password-manager password-vault sqlite3 web-application
Last synced: 15 Apr 2025
https://github.com/juri/fernet
Fernet cryptography format implementation in Swift
Last synced: 12 Oct 2025
https://github.com/i-umairkhan/ecdsa_node
Transactions via ECDSA cryptography algorithm.
cryptography ecdsa-cryptography express javascript nodejs react
Last synced: 14 Apr 2026
https://github.com/jitendragangwar123/ekolance-solidity-cohort-2
This repository contains Solidity programming exercises that were discussed during the Ekolance Solidity Cohort 2. It serves as a resource for learning and practicing Solidity, a programming language used for developing smart contracts on blockchain platforms like Ethereum.
blockhain-tecnology cryptography ethereum solidity
Last synced: 07 Jan 2026
https://github.com/volhovm/ocd-tasks
Solutions for the "An Introduction to Mathematical Cryptography" textbook by Hoffstein, Pipher, Silverman
Last synced: 16 Oct 2025
https://github.com/samuel-lucas6/padme.net
A .NET implementation of PADMÉ padding.
crypto cryptography padding padme padme-padding
Last synced: 23 Jan 2026
https://github.com/tom-weatherhead/helix
An RSA encryption and uuencoding/uudecoding application from 2002.
cpp cryptography encryption rsa-encryption uudecode uuencode
Last synced: 09 Oct 2025
https://github.com/newyaroslav/crypto-json
C ++ library for JSON encryption with COMMENTS
cryptography json json-parser strip-json-comments
Last synced: 15 May 2026
https://github.com/ajlearner46/post-quantum-cryptography-signature-scheme
Implementation of Post-quantum cryptography signature protocol
cryptography cryptography-algorithms post-quantum-algorithms post-quantum-cryptography post-quantum-signature pqcrypto python signature-scheme
Last synced: 06 Jan 2026
https://github.com/ngirimana/rsa
RSA algorithm is asymmetric cryptography algorithm. Asymmetric actually means that it works on two different keys i.e. Public Key and Private Key. As the name describes that the Public Key is given to everyone and Private key is kept private.
cryptography css3 html5 network-security rsa
Last synced: 07 May 2026
https://github.com/gotz1480/bitcoin-cryptography-ecc
Study of bitcoin elliptic curve cryptography (ECC)
bitcoin cryptography ecc-cryptography elliptic-curve-cryptography
Last synced: 07 Apr 2025
https://github.com/lssandes/crypto-app
blockchain crypto cryptocurrency cryptography cryptorank rapidapi react
Last synced: 11 Feb 2026
https://github.com/tangle-network/anonima
A threshold signature oracle node.
Last synced: 14 Sep 2025
https://github.com/lovasoa/sha_hashes
Collection of sha hashes of common passwords
cracking cryptography security sha1 website whitehat
Last synced: 28 Jan 2026
https://github.com/m3dzik/libcrypto
Cryptographic utilities for Java and JavaScript
aes aes-gcm argon2 crypto cryptography curve25519 encryption hashing security x25519
Last synced: 09 Apr 2025
https://github.com/nulltea/contangle-zkcp
Universal Zero Knowledge Contingent Payments (on hold)
bitcoin cryptography ethereum payment zero-knowledge
Last synced: 19 Apr 2026
https://github.com/gunh0/whitebox_cryptanalysis
🔒 Whitebox Cryptographic Code Example
Last synced: 25 Mar 2025
https://github.com/crnobog69/polychaos
PolyChaos 🔐 | систем шифровања - encryption system
cryptography encryption encryption-decryption python secure security security-tools simple simple-app simple-project
Last synced: 06 Feb 2026
https://github.com/scar26/votesec.io
An automated voting platform based on Azure Blockchain that offers complete anonymity, instantaneous results and a plethora of other features
blockchain cosmosdb cryptography iot node-chakra solidity truffle
Last synced: 03 Mar 2026
https://github.com/amirhosein2004/secure-token
package secure-token
cryptography pypi-packages python secure-token
Last synced: 13 Apr 2026
https://github.com/virgilsecurity/virgil-ratchet-x
Virgil Security Ratchet Objective-C/Swift 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: 14 Jun 2025
https://github.com/anuja-rahul/python-datavault
Encrypt and safeguard your valuable data with this python encryption/decryption module.
aes-256 cbc-aes-encryption cryptography fernet-cryptography oops-in-python
Last synced: 19 Jun 2026
https://github.com/ironcorelabs/ironoxide-swift
IronCore Labs SDK for Swift Applications
cryptography proxy-re-encryption swift transform-encryption
Last synced: 02 Jul 2025
https://github.com/christoffercarlsson/autograph
The Autograph Protocol
authentication chacha20-poly1305 cryptography decentralization diffie-hellman ed25519 elliptic-curves freedom hkdf identity ownership privacy security verification x25519
Last synced: 18 Oct 2025
https://github.com/tommasoazz/cryptography-notes
Notes for studying, preparing homeworks and exams of the course "Cryptography" of University of Bologna, Master Degree in Computer Science (LM Informatica), A.Y. 2021/2022.
computer-science cryptography notes
Last synced: 11 Feb 2026
https://github.com/haskell-cryptography/cryptography-blake3
A wrapper around cryptography-blake3-bindings which is more Haskell-friendly
Last synced: 13 May 2026
https://github.com/mashatan/go-cryptoconditions
Crypto-Conditions in Go
cryptoconditions cryptography golang-package
Last synced: 14 Jan 2026
https://github.com/shaharashe/cryptography_modules
This repository features Python implementations of various cryptographic algorithms, including RSA, ElGamal, and Vigenère cipher. It serves as a resource for learning and experimenting with cryptographic techniques. Contributions are welcome!
algorithm algorithms cryptography decryption encryption module modules python python3 security-tools
Last synced: 02 Mar 2026
https://github.com/chase-moskal/pastesafe
open encryption web app
asymmetric-encryption crypto cryptography
Last synced: 17 Aug 2025
https://github.com/trailofbits/rfc8785.py
A pure-Python implementation of RFC8785 (JSON Canonicalization Scheme)
canonicalization cryptography json python serialization
Last synced: 15 Apr 2025
https://github.com/vaithak/birthday-paradox-simulation
A simulator of the birthday paradox problem
birthday-paradox cplusplus cryptography gnuplot graph paradox probability simulator vaithak
Last synced: 19 Oct 2025
https://github.com/hayr-hotoca/react-native-chacha20-poly1305
ChaCha20-Poly1305 encryption/decryption for React Native. Native implementations make sure it has the fastest performance.
256-bit aes android chacha20 chacha20-poly1305 chacha20poly1305 cipher cipher-algorithms cross-platform cryptography encryption encryption-algorithms ios javascript react react-native reactjs typescript
Last synced: 07 Oct 2025
https://github.com/robb-fr/cryptography-diffie-beepboop
2021 COM-401 course's at EPFL, coding homeworks. Sage kernel for Jupyter Notebook. Cryptography and Security.
capture-the-flag cryptography sagemath
Last synced: 06 Jun 2026
https://github.com/saeed0x1/black-hat-ctf
This CTF event was organised by Data Science analytics and Cyber Security club at the annual Tech Fest Prajyukttam 🎆, Assam Don Bosco University 🎓
binary-exploitation capture-the-flag cryptography ctf ctf-challenges ctf-tools digital-forensics web-exploitation website
Last synced: 04 Mar 2026
https://github.com/tankerhq/sdk-rust
Tanker client-side encryption SDK for Rust
cryptography encryption end-to-end privacy rust sdk security tanker
Last synced: 09 Apr 2025
https://github.com/davxy/cry
CRY crypto library
arithmetic bignumber cryptography mpi number-theory
Last synced: 09 Apr 2025
https://github.com/pirate-emperor/cipherx
CipherX is a verification project for Advanced Encryption Standard (AES-128) using Universal Verification Methodology (UVM). It leverages Verilog, SystemVerilog, and Python to ensure robust encryption algorithm validation, integrating comprehensive UVM components and tests.
aes-128 cryptography cryptography-algorithms dataencryption dataencryptionstandards digitaldesign encrytption hardwareverification python security testing-framework uvm verification verilog
Last synced: 26 Jan 2026
https://github.com/mobilecoinfoundation/rand
A platform abstraction layer providing a cryptographic RNG
cryptography no-std random rng
Last synced: 26 Jul 2025
https://github.com/leo-aa88/cryptography
Cryptography projects and algorithms in Python
cryptography cryptography-algorithms cryptography-library python python-cryptography python3
Last synced: 25 Aug 2025
https://github.com/fionn/secret-sharing
Shamir's secret sharing
cryptography multi-party-computation shamir-secret-sharing threshold-cryptography
Last synced: 07 Jun 2026
https://github.com/thotypous/keccak-bsv
Bluespec SystemVerilog implementation of the Keccak primitive (SHA-3)
bluespec cryptography hardware-designs keccak sha3
Last synced: 19 Mar 2026
https://github.com/uncomputable/tackling-bulletproofs
In-depth survey into what Bulletproofs are and how they work
cryptography learning mathematics pdf tutorial zero-knowledge-proof
Last synced: 19 Mar 2026
https://github.com/azlibdar/caesar-cipher
Caesar Cipher using JavaScript
caesar-cipher cipher-algorithms cryptography
Last synced: 31 Mar 2025
https://github.com/moeraorg/java-moeralib
Java library to interact with Moera decentralized social network
cryptography decentralized java java-library library maven moera social-network
Last synced: 23 Feb 2026
https://github.com/seigtm/rsa
A simple C# code that allows you to encrypt and decrypt huge numbers using the RSA algorithm.
biginteger bigintegers cryptography csharp encryption rsa rsa-algorithm rsa-cryptography rsa-encryption rsa-key-encryption
Last synced: 20 Apr 2025
https://github.com/pavelkryukov/putty-ci
PuTTY with continuous integration
cryptography putty puttygen ssh ssh-client
Last synced: 14 May 2026
https://github.com/pastesafe/pastesafe.github.io
instant web cryptography. encrypt in realtime as you type. share and decrypt ciphertext.
Last synced: 10 Mar 2026
https://github.com/crocs-muni/eacirc-utils
Utils for experiment creation and result postprocessing
automation cryptography randomness research-tool
Last synced: 31 Jan 2026
https://github.com/ntdls/secure-archive
Secure Archive is a file encryption utility that provides multiple encryption algorithms, variable compression levels, secure file delete, self-extracting archives and more.
cryptography file-management file-system private security showcase
Last synced: 27 Mar 2026
https://github.com/lvmalware/lvha256
The LV Hash Algorithm - my own cryptographic hashing algorithm
a algorithm crypto cryptographic cryptographic-hash-functions cryptographic-hashing-algorithms cryptography hash hashing implementation security
Last synced: 31 Mar 2025
https://github.com/ryanoutcome20/cryptify
A WinForms based file Encryption system.
aes cryptography csharp des filesystem tools tripledes windows windows-forms
Last synced: 25 Feb 2026
https://github.com/mateoniksic/project-encrypted-chatroom
client-server chatroom using ecdsa/x25519/sha256 algorithms (CODE) [ PYTHON ]
authentication chatroom client-server cryptography decryption ecdsa encryption exchange key-exchange-algorithms message python python3 sha256 x25519
Last synced: 05 Aug 2025
https://github.com/allouis/lamport-ots
🔏 Lamport One-Time Signatures in JavaScript 🔏
cryptography lamport ots signature
Last synced: 05 Apr 2025
https://github.com/zkdotim/zkim-file-format
Secure encrypted file format with three-layer encryption, integrity validation, and privacy-preserving search capabilities
blake3 cryptography encryption file-format privacy searchable-encryption security typescript xchacha20 zero-knowledge
Last synced: 15 Jan 2026
https://github.com/kehiy/go-secp256k1
a bitcoin libsecp256k1 binding for golang. [WIP]
binding bitcoin c cgo cryptography go golang libsecp256k1 nostr
Last synced: 02 Mar 2025
https://github.com/blackm0re/pyotp2289
A pure Python implementation of "A One-Time Password System" - RFC-2289
2289 cryptography freebsd otp password python security unix
Last synced: 21 Aug 2025
https://github.com/hpgrahsl/rhd-csflc-kafka-connect-demos
Demo Scenarios discussed in my Red Hat Developers article series
apachekafka cryptography encryption-decryption kafka kafka-connect security
Last synced: 18 Feb 2026
https://github.com/stackoverflowexcept1on/roast
Rust implementation of ROAST (Robust Asynchronous Schnorr Threshold Signatures) with cryptography by Zcash Foundation
cryptography elliptic-curves schnorr schnorr-signatures threshold-cryptography threshold-signature
Last synced: 18 Sep 2025
https://github.com/mail4metablocks/cryptographic-protocols
zksnarks,zkstarks Cryptographic protocols implementation using Rust
Last synced: 14 Jan 2026
https://github.com/swift-libp2p/swift-libp2p-crypto
Core LibP2P cryptography API for commonly used Keys, Hashes and Ciphers
cryptography libp2p multiformats
Last synced: 22 Jul 2025
https://github.com/toggio/securetokenizer
A PHP Library for Cryptographically Secure Token Generation and Management
ajax cryptography csrf csrf-attacks csrf-protection csrf-tokens javascript php random replay-attack secure sql-injection-attacks token tokenizer xss xss-detection
Last synced: 13 Apr 2025
https://github.com/cmason3/vaulty.rs
Vaulty in Rust - Encrypt/Decrypt with ChaCha20-Poly1305
chacha20-poly1305 cryptography rust-lang scrypt sha256
Last synced: 26 Jul 2025
https://github.com/mlh-fellowship/chamberofsecrets-backend
Sprint 2 Project for MLH Fellowship made by Aman Sharma, Suhani Chawla, Saumya Gandhi.
cryptography data-security digi-locker django-rest-framework docusaurus2 ethical-data harry-potter
Last synced: 01 Aug 2025
https://github.com/vsrc/playground
My personal sandboxed experimenting lab
bitcoin cryptocurrency cryptography golang
Last synced: 16 May 2026
https://github.com/aman-17/rabin-cryptosystem
Implementation of Rabin PKC in python
cryptography encryption python rabin-cryptosystem
Last synced: 20 Mar 2025
https://github.com/cmason3/vaulty.go
Vaulty in Go - Encrypt/Decrypt with ChaCha20-Poly1305
chacha20-poly1305 cryptography ecdh golang scrypt sha256 x25519
Last synced: 26 Jul 2025
https://github.com/jalaj711/go-des
GoLang implementation of DES, 3DES (128-bit key) and 3DES (192-bit key) with support for ECB, CBC, CFB and OFB modes.
3des cryptography des golang symmetric-cryptography
Last synced: 29 Jul 2025
https://github.com/kartmaan/filecrypt
Python script to encrypt and decrypt files
aes aes-128 argparse argparser command command-line cryptography cryptography-library cryptography-tools decryption encryption encryption-decryption fernet files script sha-256
Last synced: 15 Jun 2025
https://github.com/xtrendence/native-encryption
My first mobile app developed using React Native. A simple app that allows the user to use AES-256 to encrypt/decrypt data.
aes-encryption android cross-platform cryptography encryption ios mobile-app react react-native reactjs
Last synced: 08 Apr 2026
https://github.com/maxpat78/cryptopad
A simple Notepad supporting ZIP AES-256 encrypted documents, coded in Python
aes cryptography encryption notepad security text-editor zip zipfile
Last synced: 12 Apr 2025
https://github.com/shinbatsu/tryhackme-awesome
[👾] TryHackMe / tryhackme -The Comprehensive list of rooms (1000+). Ordered by popularity. Solutions, badges, points.
awesome-list cryptography cyber-security list reverse-engineering tryhackme
Last synced: 07 Sep 2025
https://github.com/ishan-surana/cryptosystems
The 𝚌𝚛𝚢𝚙𝚝𝚘𝚜𝚢𝚜𝚝𝚎𝚖𝚜 package offers a suite of classes and functions for both symmetric and asymmetric encryption, signature-verification, hashing algorithms, key exchange protocols as well as mathematical utility functions. Docs at https://cryptosystems.readthedocs.io.
asymmetric-cryptography bcrypt cryptography cryptography-algorithms cryptography-library cryptosystems gmp gmplib hashing-algorithm key-exchange-protocol mathematical-functions mathematical-utilities python-package python3 signature-verification symmetric-key-cryptography
Last synced: 09 Jul 2025
https://github.com/belajarqywok/wintrapd
crafting malware, presentation and discussion material for network and computer security courses. [ Group - 2 ]
cmake cryptography llvm-clang malware metasploit-framework win32api
Last synced: 11 Jan 2026
https://github.com/fionn/cryptopals
Attack at dawn
cryptanalysis cryptography cryptopals cryptopals-crypto-challenges matasano matasano-crypto-challenges
Last synced: 02 Mar 2025
https://github.com/anirbanbasu/paillier-crypto
Implementation of the additively homomorphic Paillier cryptosystem
cryptographic-algorithms cryptographic-library cryptography encryption-algorithms homomorphic-encryption paillier
Last synced: 24 Jun 2025
https://github.com/jadnohra/zig-crypto-bench
Crypto benchmarks: Zig vs Rust performance comparison.
benchmark cryptography perfromance rust zig
Last synced: 18 May 2026
https://github.com/cizr/digital-steganography-images
A Python-based tool for concealing confidential information within images.embed and extract data seamlessly, adding an extra layer of privacy to your images.
algorithms cryptography digitalforensics python steganography
Last synced: 22 Mar 2025
https://github.com/victorzhang2014/zrcryptographyoc
ZRCryptographyOC, a set of cryptographic methods which provides an easily way to call. It includes RSA,AES,DES,MD5,SHA1,SHA224,SHA384,SHA512 algorithms.
aes cryptography ios md5 rsa sha1 sha224 sha256 sha512
Last synced: 06 Apr 2025
https://github.com/functionally/crypto-lean4
Implementation of various cryptographic functions in Lean4
cryptography elliptic-curves lean4
Last synced: 03 Feb 2026
https://github.com/kryptokrona/kryptokrona-wallet-backend-js
Kryptokrona library in JS/TS for building decentralized private communication and payment systems.
blockchain crypto cryptocurrency cryptography decentralized distributed-systems javascript kryptokrona nodejs typescript web3 xkr
Last synced: 17 Jan 2026
https://github.com/dyslex7c/zk-election
Cryptography-driven and privacy-preserving election framework with zk-SNARKs
circom cryptography election voting voting-application zero-knowledge zkp zksnarks
Last synced: 03 Feb 2026
https://github.com/nsk89/netcrypt
simplifying socket data stream cryptography using RSA public keys and AES data encryption, using PyCryptodome cryptographic primitives
aes-encryption cryptography network-secuirty pycryptodome python python3 rsa-encryption socket-communication
Last synced: 25 Aug 2025