Showing 815 open source projects for "security"

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  • 1
    Cryptol

    Cryptol

    Cryptol: The Language of Cryptography

    ...Developed by Galois, Cryptol provides a high-level mathematical syntax for describing cryptographic primitives and enables formal verification of algorithm properties. It is used in academic, research, and defense sectors to validate correctness and security through symbolic execution and model checking, ensuring critical cryptographic code is free of design flaws.
    Downloads: 12 This Week
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  • 2
    cargo-crev

    cargo-crev

    A cryptographically verifiable code review system for the cargo

    ...Build a web of trust of other reputable users to help verify the code you use. Static binaries are available from the releases page. Crev is a system for verifying the security and reliability of dependencies based on collaborative code reviews. Crev users review the source code of packages/libraries/crates and share their findings with others. Crev then uses Web of Trust to select trusted reviews and judge the reputation of projects' dependencies.
    Downloads: 8 This Week
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  • 3
    AWS Encryption SDK for Java
    The AWS Encryption SDK is a client-side encryption library designed to make it easy for everyone to encrypt and decrypt data using industry standards and best practices. It enables you to focus on the core functionality of your application, rather than on how to best encrypt and decrypt your data. The AWS Encryption SDK is provided free of charge under the Apache 2.0 license. With the AWS Encryption SDK, you define a master key provider (Java and Python) or a keyring (C, C#/.NET, and...
    Downloads: 6 This Week
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  • 4
    AWS Encryption SDK for C

    AWS Encryption SDK for C

    AWS Encryption SDK for C

    The AWS Encryption SDK for C is a client-side encryption library designed to make it easy for everyone to encrypt and decrypt data using industry standards and best practices. It uses a data format compatible with the AWS Encryption SDKs in other languages. For more information on the AWS Encryption SDKs in all languages, see the Developer Guide. We will demonstrate some simple build recipes for Linux, Mac, and Windows operating systems. These recipes assume a newly installed system with...
    Downloads: 8 This Week
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  • 5
    Ciphey

    Ciphey

    Decrypt encryptions without knowing the key or cipher

    Fully automated decryption/decoding/cracking tool using natural language processing & artificial intelligence, along with some common sense. You don't know, you just know it's possibly encrypted. Ciphey will figure it out for you. Ciphey can solve most things in 3 seconds or less. Ciphey aims to be a tool to automate a lot of decryptions & decodings such as multiple base encodings, classical ciphers, hashes or more advanced cryptography. If you don't know much about cryptography, or you want...
    Downloads: 5 This Week
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  • 6
    ShadowsocksX-NG

    ShadowsocksX-NG

    Next Generation of ShadowsocksX

    ShadowsocksX-NG is the new ShadowsocksX, a secure socks5 proxy for accessing restricted sites or services on macOS. ShadowsocksX-NG was created separately from the original implementation as there had been too much unused code and dependencies of the ss-local source code in the original that had to be maintained. As such it was difficult to update. ShadowsocksX-NG has just a copy of ss-local from Homebrew, and its GUI code has been rewritten in Swift. It now runs as a background service...
    Downloads: 20 This Week
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  • 7
    aws-encryption-sdk-cli

    aws-encryption-sdk-cli

    CLI wrapper around aws-encryption-sdk-python

    This command line tool can be used to encrypt and decrypt files and directories using the AWS Encryption SDK. If you have not already installed cryptography, you might need to install additional prerequisites as detailed in the cryptography installation guide for your operating system. Installation using a python virtual environment is recommended to avoid conflicts between system packages and user-installed packages. For the most part, the behavior of aws-encryption-cli in handling files is...
    Downloads: 3 This Week
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  • 8
    s2n-quic

    s2n-quic

    An implementation of the IETF QUIC protocol

    s2n-quic is AWS’s open-source implementation of the IETF QUIC transport protocol, written in Rust and designed for performance, security, and modern usage. QUIC is a UDP-based, multiplexed, encrypted transport layer that underpins HTTP/3 and addresses issues such as head-of-line blocking and faster handshake times compared to TCP+TLS. This library integrates with AWS’s s2n-tls or rustls for the TLS 1.3 handshake and leverages Rust’s memory and thread safety guarantees to deliver a robust implementation. ...
    Downloads: 8 This Week
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  • 9
    Cryptomator

    Cryptomator

    Multi-platform transparent client-side encryption for your cloud files

    Cryptomator is a free and open source project that offers multi-platform, transparent client side encryption of your files in the cloud. It works with just about any cloud storage service; is totally transparent so you can work with your files how you normally would; and secure with a 256-bit key length AES encryption. It’s also simple and easy to use with no need for different accounts, key management, cloud access grants or cipher configurations.
    Downloads: 8 This Week
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  • 10
    Minisign

    Minisign

    A dead simple tool to sign files and verify digital signatures

    Minisign is a lightweight command-line utility designed for generating and verifying digital signatures with a strong focus on simplicity, security, and portability. It uses the modern Ed25519 public-key cryptographic system to produce fast and compact signatures, making it well-suited for software distribution and file integrity verification. The tool is intentionally minimalistic, performing a single task efficiently without unnecessary complexity, which makes it easy to integrate into automated workflows and pipelines. ...
    Downloads: 4 This Week
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  • 11
    Constantine

    Constantine

    Modular, high-performance, zero-dependency cryptography stack

    High-performance cryptography for proof systems and blockchain protocols. This library provides a constant-time implementation of cryptographic primitives with a particular focus on cryptography used in blockchains and zero-knowledge-proof systems. The library aims to be a fast, compact and hardened library for elliptic curve cryptography needs, in particular for blockchain protocols and zero-knowledge proofs system.
    Downloads: 3 This Week
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  • 12
    libsodium

    libsodium

    A modern, portable, easy to use crypto library

    libsodium is a modern, portable, and easy-to-use cryptographic library that serves as an API-compatible fork of NaCl. Consistent behavior and formats across supported platforms. It enhances the original design with build and portability improvements, making it widely deployable across platforms for secure encryption, signatures, hashing, and key derivation. Digital signature creation and verification support. Adds extended cryptographic primitives like BLAKE2 and ChaCha20-Poly1305 beyond NaCl.
    Downloads: 7 This Week
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  • 13
    aws-encryption-sdk

    aws-encryption-sdk

    AWS Encryption SDK

    The AWS Encryption SDK is a client-side encryption library designed to make it easy for everyone to encrypt and decrypt data using industry standards and best practices. It enables you to focus on the core functionality of your application, rather than on how to best encrypt and decrypt your data. The AWS Encryption SDK is provided free of charge under the Apache 2.0 license. With the AWS Encryption SDK, you define a master key provider (Java and Python) or a keyring (C, C#/.NET, and...
    Downloads: 3 This Week
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  • 14
    Trillian

    Trillian

    A transparent, highly scalable and cryptographically verifiable data

    trillian is a transparent, cryptographically verifiable data store built on Merkle trees that provides append-only logs and verifiable key–value maps. It separates a storage layer from a verifiability layer, letting applications prove inclusion, consistency, and non-existence through compact cryptographic proofs. The system is designed for horizontal scale with gRPC APIs, enabling multiple frontends and sequencers to operate over a shared backend. Common use cases include certificate...
    Downloads: 6 This Week
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  • 15
    AWS Encryption SDK for Dafny

    AWS Encryption SDK for Dafny

    AWS Encryption SDK for Dafny

    To build, the AWS Encryption SDK requires the most up-to-date version of dafny on your PATH. In addition, this project uses the parallel verification tasks provided by the dafny.msbuild MSBuild plugin, and thus requires dotnet 3.0. The tests currently require native implementations of cryptographic primitives and other methods, so they can only be run when embedding this library into one of the compilation target languages supported by Dafny. This repo uses Duvet to directly document the...
    Downloads: 4 This Week
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  • 16
    Swift Crypto

    Swift Crypto

    Open-source implementation of a substantial portion of the API

    Swift Crypto is a cross-platform, open-source implementation that mirrors a substantial portion of CryptoKit so server and Linux/Windows ARM64 apps can share one modern crypto API. It exposes high-level, misuse-resistant primitives with Swift ergonomics while delegating to well-vetted backends under the hood. The repository maintains active releases and issue tracking for enhancements like PEM handling and ecosystem compatibility. High-level, misuse-resistant primitives and key handling....
    Downloads: 3 This Week
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  • 17
    Halite

    Halite

    High-level cryptography interface powered by libsodium

    Halite is a high-level cryptography interface that relies on libsodium for all of its underlying cryptography operations. Halite was created by Paragon Initiative Enterprises as a result of our continued efforts to improve the ecosystem and make cryptography in PHP safer and easier to implement. You can read the Halite Documentation online. Halite is released under Mozilla Public License 2.0. Commercial licenses are available from Paragon Initiative Enterprises if you wish to extend Halite...
    Downloads: 2 This Week
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  • 18
    Qtum

    Qtum

    Qtum Core Wallet

    Qtum is a decentralized blockchain project built on Bitcoin's UTXO model, with support for Ethereum Virtual Machine-based smart contracts, and secured by a proof of stake consensus model. It achieves this through the revolutionary Account Abstraction Layer which allows the EVM to communicate with Qtum's Bitcoin-like UTXO blockchain. Welcome to the Qtum Ignition Main Network. This is the main network where the tokens hold value and should be guarded very carefully. If you are testing the...
    Downloads: 3 This Week
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  • 19
    VeraCrypt

    VeraCrypt

    Open source disk encryption with strong security for the Paranoid

    VeraCrypt is a free disk encryption software brought to you by IDRIX (https://www.idrix.fr) and based on TrueCrypt 7.1a. It adds enhanced security to the algorithms used for system and partitions encryption making it immune to new developments in brute-force attacks. It also solves many vulnerabilities and security issues found in TrueCrypt. This enhanced security adds some delay ONLY to the opening of encrypted partitions without any performance impact to the application use phase. ...
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    Downloads: 4,012 This Week
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  • 20

    GnuPG for OS X / macOS

    GnuPG 2.2, 2.3 and 2.4 distributions for OS X / macOS

    This project was retired on 2025-03-30, see the documentation section.
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    Downloads: 292 This Week
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  • 21

    Ed448-Goldilocks

    A 448-bit Edwards curve

    This is an implementation of elliptic curve cryptography using the Montgomery and Edwards curves Curve25519, Ed25519, Ed448-Goldilocks and Curve448, using the Decaf / Ristretto encoding.
    Downloads: 28 This Week
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  • 22
    Msieve is a C library implementing a suite of algorithms to factor large integers. It contains an implementation of the SIQS and GNFS algorithms; the latter has helped complete some of the largest public factorizations known
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    Downloads: 120 This Week
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  • 23
    Stegcore

    Stegcore

    A cross-platform crypto-steganography toolkit

    ...Unlike basic steganography tools that hide data without encrypting it, Stegcore ensures the payload is cryptographically protected at rest. Unlike pure encryption tools, the payload isn't even visible. Designed for journalists, security researchers, red teamers, digital forensics professionals, and CTF participants.
    Downloads: 33 This Week
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  • 24
    KeyStore Explorer

    KeyStore Explorer

    Free GUI replacement for Java command-line utilities keytool/jarsigner

    KeyStore Explorer is a free GUI replacement for the Java command-line utilities keytool and jarsigner.
    Downloads: 59 This Week
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  • 25
    JSignPdf

    JSignPdf

    Add digital signatures to PDF documents - GUI and CLI, cross-platform

    JSignPdf is a free, open-source Java application for signing PDF documents with digital certificates. It provides a graphical desktop interface for everyday users and a command-line mode for scripted and server-side workflows. Supported capabilities include PKCS#12 keystores, smartcards and hardware tokens (PKCS#11), Windows keystore integration, visible signatures with custom images and positioning, timestamp authority (TSA) support, OCSP/CRL revocation checks, certification signatures,...
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    Downloads: 879 This Week
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