Search Results for "digital signatures"
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Showing 63 open source projects for "digital signatures"
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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. ... -
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LibreSign
Nextcloud app to sign PDF documents
Simplify your digital signatures and document management safely and efficiently. Beyond offering agility and security in digital signatures and document management, LibreSign features functionalities that adapt to the specific needs of your organization. Keep your documents secure with end-to-end encryption and multi-factor authentication, ensuring protection throughout the electronic document signing process. -
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DSS
Creation, extension and validation of advanced electronic signatures
Digital Signature Service, creation, extension, and validation of advanced electronic signatures. -
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0install
the core 0install package
0install is a decentralized, cross-platform software installation system that allows developers to publish programs directly from their websites. It supports features like shared libraries, automatic updates, and digital signatures, providing a secure and flexible alternative to traditional package managers. 0install is designed to complement existing systems, ensuring that packages do not interfere with those provided by the operating system. -
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libsodium
A modern, portable, easy to use crypto library
...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. -
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ObjectivePGP
ObjectivePGP is an open-source library for iOS and macOS
ObjectivePGP is an open-source library for OpenPGP encryption, decryption, signing, and verification in Objective-C and Swift. It enables developers to add PGP-based security to iOS and macOS apps. -
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libsodium.js
libsodium compiled to Webassembly and pure JavaScript
libsodium.js is a JavaScript and WebAssembly port of the widely used libsodium cryptographic library, providing modern, high-level cryptographic functions for secure application development in web and Node.js environments. It exposes a comprehensive set of APIs for encryption, decryption, hashing, digital signatures, and key exchange, all designed to be safe and easy to use without requiring deep cryptographic expertise. The library leverages WebAssembly for improved performance, enabling near-native execution speeds within browsers and JavaScript runtimes. It is designed to prevent common cryptographic mistakes by offering secure defaults and abstractions that reduce the risk of misuse. libsodium.js is particularly useful for building secure web applications, messaging systems, and privacy-focused tools that require client-side encryption. ... -
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GnuPG
Complete and free implementation of the OpenPGP standard
...It uses a hybrid cryptographic approach combining symmetric encryption for performance with public-key cryptography for secure key exchange and identity verification. The software allows users to encrypt files and messages, create digital signatures, and manage cryptographic keys, making it a foundational tool for privacy-focused workflows. Because it is open source and licensed under the GNU GPL, GnuPG can be freely audited, modified, and redistributed, which has contributed to its adoption in security-sensitive environments. It is primarily command-line driven but can be integrated into email clients, messaging tools, and graphical front-ends for broader usability. -
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Gnosis Safe Contracts
Gnosis Safe allows secure management of blockchain assets
The most trusted platform to manage digital assets on Ethereum. Access the most recent version of the Safe directly in your browser. Download the Safe as a static desktop application for Windows, MacOS or Linux. Conveniently manage your digital assets on the go. Fully customize how you manage your company crypto assets, with the option to require a predefined number of signatures to confirm transactions. -
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Vanilla.PDF
Cross-platform SDK for creating and modifying PDF documents
...The SDK offers full cross-platform support including Windows, Linux, macOS, and Android, with builds available for major compilers and architectures. Vanilla.PDF supports advanced PDF features such as adding CMS (PKCS#7) digital signatures, modifying content streams and metadata, and working with encryption and permissions based on standard PDF security models. It includes tools for parsing PDF internals like cross-reference tables and objects, providing fine-grained document analysis capabilities. The project is unit-tested with continuous integration pipelines, supporting sanitizers for enhanced code quality and stability. -
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OpenSign
🔥 The free & Open Source DocuSign alternative
The premier open source document signing solution (DocuSign alternative). Welcome to OpenSign, the premier open source docusign alternative - document e-signing solution designed to provide a secure, reliable and free alternative to commercial esign platforms like DocuSign, PandaDoc, SignNow, Adobe Sign, Smartwaiver, SignRequest, HelloSign & Zoho sign. Our mission is to democratize the document signing process, making it accessible and straightforward for everyone. -
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LibPDF
A modern PDF library for TypeScript
LibPDF-js/core is a modern, TypeScript-first PDF processing library that provides a comprehensive toolkit for parsing, modifying, and generating PDF documents with a clean, intuitive API designed to handle real-world files safely and robustly. Unlike many existing JavaScript PDF libraries, it emphasizes lenient parsing that can gracefully handle malformed structures and fallback strategies where typical parsers fail, making it useful for production environments that encounter unpredictable... -
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Monero
Secure, Private Digital Currency
Monero is a secure, private, untraceable cryptocurrency. It is decentralized-- dependent on a distributed peer-to-peer consensus network where every transaction is cryptographically secured. With Monero you are your own bank, you control your funds and can spend safely. No one else can see your balances, track your transfers or any other transactions unless you allow them to. Monero uses ring signatures, ring confidential transactions, and stealth addresses making it absolutely private... -
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PDF4QT
Open source PDF editor
...Users can preview these applications in the screenshots section of this webpage. Basic browsing and lots of other functionalities, such as encryption, reading a document, verification of digital signatures, editing of annotations, searching for text using regular expressions, drawing pages into an image, and much more. Several plug-ins are available. -
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Detect It Easy
Program for determining types of files for Windows, Linux and MacOS
...The tool offers both a graphical user interface as well as a command-line interface, allowing flexible use across environments (desktop, servers, automation). Its detection engine is signature-based, but also includes heuristics that help when signatures are missing or obfuscated. This helps when analyzing packed, compressed, or partially corrupted files. -
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DocuSeal
Open source DocuSign alternative
...All email messages sent via DocuSeal are customizable. With our step-by-step form users have a smooth signing experience on small mobile screens. Also, you can upload documents and request signatures directly from your device. -
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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, and PDF encryption. ... -
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GopenPGP V3
A high-level OpenPGP library
GopenPGP V3 is a high-level OpenPGP cryptographic library developed by ProtonMail that provides a user-friendly API for common encryption and signing operations in Go, abstracting the complexity of the underlying OpenPGP standards and golang crypto primitives. This library lets developers perform key generation, message encryption and decryption, digital signing, and signature verification with straightforward functions that hide much of the boilerplate and nuance typically required when working directly with OpenPGP implementations. Built on top of a forked version of the Go crypto library, gopenpgp supports current OpenPGP RFC standards and includes examples for working with password-based encryption and PGP keys, as well as detached and inline signatures. -
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...This application provides a convenient way to apply digital signatures, enabling you to validate the document's authenticity and verify the signer's identity.
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Trexo PDF Signer is a professional-grade, open-source application designed for creating legally binding digital signatures on PDF documents. Built with enterprise security standards in mind, it provides seamless integration with hardware security modules (HSM), software certificates, and native platform keystores.
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Digital Signer (a PDF Signing software)
Digital Signature & eSigning software. Bulk PDF signing. Sign all Page
...Key Features Sign PDFs with Hardware Devices: Ensuring the highest level of security. Digital Signature Certificates (DSC): Apply digital signatures using DSCs, Smart Cards, providing a secure and legally binding way to authenticate your documents. Your Privacy, Our Priority Protect Your Data with Complete Confidence. Our software is designed to keep your information 100% secure. Unlike cloud-based solutions, there’s no need to share your private or confidential files with unknown servers. ... -
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Open source libraries and utilities to support using digital signatures for Amateur radio QSL information.
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p7s-universal-viewer
Free P7S Viewer for Windows - Open and extract .p7s files easily
...Key features: - Open .p7s files instantly - View signature details (issuer, subject, timestamp) - Extract embedded files (PDF, XML, images, documents) - Simple and lightweight interface - No technical knowledge required This tool is ideal for users who receive signed email attachments or work with digital signatures and need a fast and easy way to access the real content inside .p7s files. Works on Windows systems and is completely free to use. -
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noosphere
Noosphere is a protocol for thought; let's discover it together
Noosphere is a decentralized protocol and SDK for creating, linking, and sharing personal knowledge in a trustless and offline-friendly environment. Developed by the Subconscious Network team, it allows users to publish content to IPFS-backed identity graphs, effectively creating a decentralized version of digital notetaking and collaboration. With support for identity, replication, and versioning, Noosphere aims to give users ownership and portability over their digital thoughts. It’s... -
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mendelson OFTP2
Implementation of the OFTP2 protocol (RFC 5024)
The mendelson OFTP2 is a JAVA-based open source OFTP2 solution. It contains a logging- and configuration UI and supports encryption, digital signatures, message compression, TLS, certificate exchange, message routing, mail notification
