1.bitcoin / bitcoin
Bitcoin Core integration/staging tree
+381 stars
from 90,200 · score 5.95
Trending repositories
Ranked by Attention Score: stars gained over the last 30 complete days
80 repositories by Attention Score · Oct 4, 2026 – Nov 2, 2026 (UTC)
2.openssl / openssl
General purpose TLS and crypto library
+318 stars
from 30,840 · score 5.77
3.cryptomator / cryptomator
Cryptomator for Windows, macOS, and Linux: Secure client-side encryption for your cloud storage, ensuring privacy and control over your data.
+215 stars
from 16,198 · score 5.38
4.bee-san / Ciphey
⚡ Automatically decrypt encryptions without knowing the key or cipher, decode encodings, and crack hashes ⚡
+104 stars
from 21,629 · score 4.65
5.PrivateBin / PrivateBin
A minimalist, open source online pastebin where the server has zero knowledge of pasted data. Data is encrypted/decrypted in the browser using 256 bits AES.
+93 stars
from 8,630 · score 4.54
6.monero-project / monero
Monero: the secure, private, untraceable cryptocurrency
+91 stars
from 10,879 · score 4.52
7.rustls / rustls
A modern TLS library in Rust
+78 stars
from 7,649 · score 4.37
8.jedisct1 / libsodium
A modern, portable, easy to use crypto library.
+75 stars
from 13,963 · score 4.33
9.javascript-obfuscator / javascript-obfuscator
A powerful obfuscator for JavaScript and Node.js
+58 stars
from 16,261 · score 4.08
10.sobolevn / awesome-cryptography
A curated list of cryptography resources and links.
+58 stars
from 7,130 · score 4.08
11.RsaCtfTool / RsaCtfTool
RSA attack tool (mainly for ctf) - retrieve private key from weak public key and/or uncipher data
+46 stars
from 7,159 · score 3.85
12.pyca / cryptography
cryptography is a package designed to expose cryptographic primitives and recipes to Python developers.
+42 stars
from 7,790 · score 3.76
13.KuroLabs / stegcloak
Hide secrets with invisible characters in plain text securely using passwords 🧙🏻♂️⭐
+37 stars
from 3,895 · score 3.64
14.amark / gun
An open source cybersecurity protocol for syncing decentralized graph data.
+32 stars
from 19,127 · score 3.50
15.wolfSSL / wolfssl
The wolfSSL library is a small, fast, portable implementation of TLS/SSL for embedded devices to the cloud. wolfSSL supports up to TLS 1.3 and DTLS 1.3! Update to wolfSSL 5.9.1 for the latest CVE fixes.
+30 stars
from 2,954 · score 3.43
16.TheAlgorithms / JavaScript
Algorithms and Data Structures implemented in JavaScript for beginners, following best practices.
+29 stars
from 34,252 · score 3.40
17.XRPLF / rippled
Decentralized cryptocurrency blockchain daemon implementing the XRP Ledger protocol in C++
+28 stars
from 5,213 · score 3.37
18.weidai11 / cryptopp
free C++ class library of cryptographic schemes
+22 stars
from 5,503 · score 3.14
19.Peergos / Peergos
A p2p, secure file storage, social network and application protocol
+22 stars
from 2,524 · score 3.14
20.aws / s2n-tls
An implementation of the TLS/SSL protocols
+21 stars
from 4,765 · score 3.09
21.padloc / padloc
A modern, open source password manager for individuals and teams.
+21 stars
from 2,920 · score 3.09
22.halfrost / Halfrost-Field
✍🏻 Source Code Deep Dives, System Design & Engineering Blogs | Halfrost-Field 冰霜之地：源码解析、系统设计与工程实践笔记
+20 stars
from 13,233 · score 3.04
23.lightningnetwork / lnd
Lightning Network Daemon ⚡️
+20 stars
from 8,190 · score 3.04
24.Legrandin / pycryptodome
A self-contained cryptographic library for Python
+20 stars
from 3,264 · score 3.04
25.RustCrypto / hashes
Collection of cryptographic hash functions written in pure Rust
+20 stars
from 2,266 · score 3.04
26.digitalbazaar / forge
A native implementation of TLS in Javascript and tools to write crypto-based and network-heavy webapps
+17 stars
from 5,333 · score 2.89
27.epsylon / ufonet
UFONet - Denial of Service Toolkit
+17 stars
from 2,531 · score 2.89
28.paulmillr / noble-hashes
Audited & minimal JS implementation of hash functions, MACs and KDFs.
+15 stars
from 926 · score 2.77
29.fwdai / rowel
🔑 Local-first Secrets Manager
+13 stars
from 947 · score 2.64
30.tendermint / tendermint
⟁ Tendermint Core (BFT Consensus) in Go
+12 stars
from 5,855 · score 2.56
31.mcginty / snow
A Rust implementation of the Noise Protocol Framework
+12 stars
from 1,101 · score 2.56
32.TokTok / c-toxcore
The future of online communications.
+11 stars
from 2,685 · score 2.48
33.pFarb / awesome-crypto-papers
A curated list of cryptography papers, articles, tutorials and howtos.
+10 stars
from 2,097 · score 2.40
34.paulmillr / noble-curves
Audited & minimal JS implementation of elliptic curve cryptography.
+10 stars
from 959 · score 2.40
35.jedisct1 / libhydrogen
A lightweight, secure, easy-to-use crypto library suitable for constrained environments.
+9 stars
from 785 · score 2.30
36.awnumar / memguard
Software sandbox for storage of sensitive information in memory.
+8 stars
from 2,757 · score 2.20
37.cossacklabs / themis
Easy to use cryptographic framework for data protection: secure messaging with forward secrecy and secure data storage. Has unified APIs across 14 platforms.
+8 stars
from 1,974 · score 2.20
38.libtom / libtomcrypt
LibTomCrypt is a fairly comprehensive, modular and portable cryptographic toolkit that provides developers with a vast array of well known published block ciphers, one-way hash functions, chaining modes, pseudo-random number generators, public key cryptography and a plethora of other routines.
+8 stars
from 1,791 · score 2.20
39.paulmillr / noble-ciphers
Audited & minimal JS implementation of Salsa20, ChaCha and AES
+8 stars
from 424 · score 2.20
+6 stars
from 4,105 · score 1.95
41.jonaschn / awesome-he
✨ Awesome - A curated list of amazing Homomorphic Encryption libraries, software and resources
+6 stars
from 1,257 · score 1.95
42.jedisct1 / libsodium.js
libsodium compiled to Webassembly and pure JavaScript, with convenient wrappers.
+6 stars
from 1,157 · score 1.95
43.Password4j / password4j
Java cryptographic library that supports Argon2, bcrypt, scrypt and PBKDF2 aimed to protect passwords in databases. Easy to use by design, highly customizable, secure and portable. All the implementations follow the standards and have been reviewed to perform better in the JVM.
+6 stars
from 432 · score 1.95
44.anoma / anoma
Reference implementation of Anoma
+5 stars
from 33,548 · score 1.79
45.tink-crypto / tinkArchived
Tink is a multi-language, cross-platform, open source library that provides cryptographic APIs that are secure, easy to use correctly, and hard(er) to misuse.
+5 stars
from 13,533 · score 1.79
46.volodymyrprokopyuk / go-blockchain
A foundational and practical guide for effectively learning and progressively building a blockchain from scratch in Go with gRPC
+5 stars
from 551 · score 1.79
47.cossacklabs / acra
Database security suite. Database proxy with field-level encryption, search through encrypted data, SQL injections prevention, intrusion detection, honeypots. Supports client-side and proxy-side ("transparent") encryption. SQL, NoSQL.
+4 stars
from 1,491 · score 1.61
48.tink-crypto / tink-java
Java implementation of Tink
+4 stars
from 307 · score 1.61
49.Xor-el / CryptoLib4Pascal
Crypto for Modern Object Pascal
+4 stars
from 262 · score 1.61
50.21-DOT-DEV / swift-secp256k1
Swift cryptography library for Bitcoin and Nostr. ECDSA, Schnorr, ECDH, and zero-knowledge proofs on secp256k1. Apple platforms and Linux.
+4 stars
from 157 · score 1.61
51.zama-ai / bounty-programArchived
Zama Bounty Program: Contribute to the FHE space and Zama's open source libraries and get rewarded 💰
+3 stars
from 15,218 · score 1.39
52.krzyzanowskim / CryptoSwift
CryptoSwift is a growing collection of standard and secure cryptographic algorithms implemented in Swift
+3 stars
from 10,574 · score 1.39
53.hellman / xortool
A tool to analyze multi-byte xor cipher
+3 stars
from 1,488 · score 1.39
54.google / mundane
Mundane is a Rust cryptography library backed by BoringSSL that is difficult to misuse, ergonomic, and performant (in that order).
+3 stars
from 1,083 · score 1.39
55.ektrah / nsec
A modern and easy-to-use cryptographic library for .NET based on libsodium
+3 stars
from 449 · score 1.39
56.potatosalad / erlang-jose
JSON Object Signing and Encryption (JOSE) for Erlang and Elixir
+3 stars
from 337 · score 1.39
57.depado / goploader
Easy file sharing with server-side encryption, curl/httpie/wget compliant
+3 stars
from 299 · score 1.39
58.boazeb / papervault
Paper vault for passwords and secrets
+3 stars
from 66 · score 1.39
59.pyca / pynacl
Python binding to the Networking and Cryptography (NaCl) library
+2 stars
from 1,207 · score 1.10
60.nccgroup / featherduster
An automated, modular cryptanalysis tool; i.e., a Weapon of Math Destruction
+2 stars
from 1,139 · score 1.10
61.jedisct1 / swift-sodium
Safe and easy to use crypto for iOS and macOS
+2 stars
from 554 · score 1.10
62.MHumm / DelphiEncryptionCompendium
Cryptographic library for Embarcadero Delphi and potentially for FPC as well
+2 stars
from 286 · score 1.10
63.KishanBagaria / padding-oracle-attacker
🔓 CLI tool and library to execute padding oracle attacks easily, with support for concurrent network requests and an elegant UI.
+2 stars
from 219 · score 1.10
64.cr0mll / cyberclopaedia
This is an aspiring project aimed at accumulating knowledge from the world of cybersecurity and presenting it in a cogent way, so it is accessible to as large an audience as possible and so that everyone has a good resource to learn hacking from.
+2 stars
from 206 · score 1.10
65.harrison314 / BouncyHsm
Bouncy Hsm is a software simulator of HSM and smartcard simulator with HTML UI, REST API and PKCS#11 interface.
+2 stars
from 203 · score 1.10
66.lk-geimfari / secrets.clj
A library designed to generate cryptographically strong random numbers suitable for managing data such as passwords, account authentication, security tokens, and related secrets.
+2 stars
from 99 · score 1.10
67.wavesplatform / Waves
⛓️ Reference Waves Blockchain Node (client) implementation on Scala
+1 stars
from 1,165 · score 0.69
68.RubyCrypto / rbnacl
Ruby FFI binding to the Networking and Cryptography (NaCl) library (a.k.a. libsodium)
+1 stars
from 984 · score 0.69
69.e-ago / bitcracker
BitCracker is the first open source password cracking tool for memory units encrypted with BitLocker
+1 stars
from 975 · score 0.69
70.paulmillr / noble-secp256k1
Fastest 5KB JS implementation of secp256k1 signatures and ECDH
+1 stars
from 887 · score 0.69
71.JHUISI / charm
Charm: A Framework for Rapidly Prototyping Cryptosystems
+1 stars
from 649 · score 0.69
72.paulmillr / noble-ed25519
Fastest 5KB JS implementation of ed25519 signatures
+1 stars
from 522 · score 0.69
73.awesome-algorand / awesome-algorand
⚡A curated list of awesome resources related to the Ⱥlgorand Blockchain ⛓
+1 stars
from 217 · score 0.69
74.lminuti / Delphi-OpenSSL
Delphi wrapper for OpenSSL
+1 stars
from 162 · score 0.69
75.kellyethridge / VBCorLib
The VBCorLib framework brings many of the powerful .NET classes to VB6.
+1 stars
from 136 · score 0.69
76.SSProve / ssprove
A foundational framework for modular cryptographic proofs in Coq
+1 stars
from 90 · score 0.69
77.shrec / UltrafastSecp256k1
Ultra high-performance secp256k1 ECC engine | Python, Node.js, Rust, Go, C#, Swift, Java bindings | CUDA, Metal, OpenCL GPU | ECDSA, Schnorr, FROST, MuSig2, BIP-352 | 15+ platforms
+1 stars
from 59 · score 0.69
+1 stars
from 47 · score 0.69
79.dmazzella / ucrypto
Micropython package for doing fast rsa and elliptic curve cryptography, specifically digital signatures
+1 stars
from 44 · score 0.69
80.paulmillr / micro-rsa-dsa-dh
Minimal JS implementation of older cryptography algorithms: RSA, DSA, DH.
+1 stars
from 26 · score 0.69