Search Results for "signature verification"
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Showing 48 open source projects for "signature verification"
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Python Slack SDK
Slack Developer Kit for Python
...It provides modular packages for Slack APIs, allowing developers to use only the capabilities they need while still keeping the pieces compatible with each other. The SDK covers the Web API, incoming webhooks, Socket Mode, OAuth, Audit Logs, SCIM, RTM, Block Kit models, and request signature verification. It is useful for bots, workflow tools, internal automations, admin dashboards, notifications, onboarding assistants, and Slack-native business applications. Developers can use it to send messages, respond to events, verify requests, manage app authorization, and integrate Slack into Python services. The project is especially helpful for teams that want a maintained, first-party Python interface instead of manually building every Slack API request. -
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libsodium
A modern, portable, easy to use crypto library
...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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OpenSign
The free & Open Source 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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Standard Webhooks
The Standard Webhooks specification
Standard Webhooks is a community-driven specification and set of open-source tools designed to make webhooks consistent, secure, and interoperable across providers. The project defines strict guidelines covering aspects like signature formats, headers, timestamps, replay protection, and forward compatibility. It includes reference implementations for signature verification and signing across multiple languages such as Python, JavaScript/TypeScript, Go, Rust, Ruby, PHP, C#, Java, and Elixir, along with additional community SDKs. The initiative is guided by a technical steering committee with members from companies like Zapier, Twilio, Mux, ngrok, Supabase, Svix, and Kong. ... -
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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. Hybrid signatures streamline negotiation processes, offering flexibility in... -
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DocuSeal
Open source DocuSign alternative
Open source document filling and signing. DocuSeal is an open-source platform that provides secure and efficient digital document signing and processing. Create PDF forms to have them filled and signed online on any device with an easy-to-use, mobile-optimized web tool. Use embeddable code snippets to seamlessly implement the document signing workflows directly on your website or app. Build fillable document forms using our pixel-perfect HTML API, reducing the time for creating personalized... -
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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... -
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DSIG Verification Tool
Verify digitally signed content based on W3C XMLSignature standard
Starting July 2026, StrongKey will start distributing new releases of its open-source software with digital signatures using the W3C XMLSignature (DSIG) standard. This project distributes CLI and GUI versions of software that can verify the signed package containing the content, signature and certificate chain. -
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GnuPG
Complete and free implementation of the OpenPGP standard
GnuPG (GNU Privacy Guard) is a widely used free software encryption system that implements the OpenPGP standard to provide secure communication and data protection across multiple platforms. 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... -
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OpenCorePkg
OpenCore bootloader
...It includes Apple-specific UEFI drivers, utilities for macOS installation support, and shared libraries used across Acidanthera projects. Apple disk image loading support. Apple keyboard input aggregation. Apple PE image signature verification. Apple UEFI secure boot supplemental code. Audio management with screen reading support. Basic ACPI and SMBIOS manipulation. -
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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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tfenv
Terraform version manager
Terraform version manager inspired by rbenv. The trust-tfenv directive means that verification uses a copy of the Hashicorp OpenPGP key found in the tfenv repository. Skipping that directive means that the Hashicorp key must be in the existing default trusted keys. By default, console output from tfenv does not print a date stamp or log severity. Some variables allow you to pass a string containing a command that will be executed using eval in order to produce a prefix to each console output... -
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bitcoinj
A library for working with Bitcoin
bitcoinj is a library for working with the Bitcoin protocol. It can maintain a wallet, send/receive transactions without needing a local copy of Bitcoin Core and has many other advanced features. It's implemented in Java but can be used from any JVM compatible language, examples in Python and JavaScript are included. Highly optimized lightweight simplified payment verification (SPV) mode. In this mode, only a small part of the blockchain is downloaded, making bitcoin suitable for usage on... -
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Cloudflare Worker JWT
Lightweight JWT implementation with no dependencies for Cloudflare
cloudflare-worker-jwt is a JavaScript library for handling JSON Web Tokens (JWTs) inside Cloudflare Workers. It enables authentication, token validation, and signature verification for serverless applications. -
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PDF4QT
Open source PDF editor
PDF4QT is open source PDF editor based on Qt framework. It contains a C++ library, applications for viewing/editing PDF documents, and a command line tool. PDF4QT is an open-source PDF editor for Windows/Linux. It is a modern solution for viewing/editing/rendering PDF documents, for users and developers alike. For developers, there is a C++ library and a command line tool for use in scripts. For users, there are four applications offering many features. The project is hosted on Github and... -
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AWS SigV4 Library
AWS library to sign AWS HTTP requests with Signature Version 4
The AWS SigV4 Library is a standalone library for generating authorization headers and signatures according to the specifications of the Signature Version 4 signing process. Authorization headers are required for authentication when sending HTTP requests to AWS. This library can optionally be used by applications sending direct HTTP requests to AWS services requiring SigV4 authentication. This library has no dependencies on any additional libraries other than the standard C library. ... -
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LibPDF
A modern PDF library for TypeScript
...The library offers full read and write manipulation, including support for encryption with RC4 and modern AES cipher suites, form filling and flattening, digital signature creation and verification, page merging/splitting, rich text extraction with layout information, and font embedding with subsetting. -
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pic-standard
Local protocol for safe agentic AI. Intent + impact + verifiable
...Before any high-impact tool call, the agent must submit an Action Proposal (schema + verifier): - explicit intent - impact classification (read / write / money / irreversible / privacy / etc.) - provenance sources with trust levels (untrusted → trusted via verification) - claims backed by verifiable evidence (SHA-256 file hashes or Ed25519 signatures) If trust/evidence is insufficient, it fails closed and blocks the action. Current version features: - Deterministic Hash Evidence verification (SHA-256) - Signature evidence (Ed25519) - Keyring expiry + revocation - CLI keys - MCP and LangGraph integrations - Comprehensive tests, examples, and documentation -
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Agentic Commerce Protocol (ACP)
Interaction model for connecting buyers to complete purchases
ACP is an open, draft specification for letting buyers, their AI agents, and businesses complete purchases through a standardized interaction model. It’s maintained by OpenAI and Stripe and licensed under Apache-2.0, with the goal of being easy to adopt alongside a merchant’s existing commerce stack rather than replacing it. The repository organizes the spec as human-readable RFCs plus machine-readable OpenAPI and JSON Schema definitions, along with worked examples and a changelog so... -
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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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eMark
Free and open-source PDF signing and verification application.
eMark is a free and open-source PDF signing and verification application – a powerful Adobe Reader alternative that enables you to securely sign, verify, timestamp, and protect PDF documents using: 🔑 USB tokens and HSM (PKCS#11) 📜 PKCS#12/PFX certificates 💻 Windows certificate store Works seamlessly on Windows, Linux, and macOS with an Adobe Reader-like interface featuring professional signature verification capabilities. -
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P7S Universal Viewer
Free Windows P7S viewer: inspect, verify and extract signed content
P7S Universal Viewer v2.0.0 is a free, MIT-licensed Windows 10/11 x64 utility by ALMARFELD. Open CMS/PKCS#7 containers, inspect each signer, verify signature integrity and extract embedded content without changing its bytes. Detached signatures require the exact original file; they cannot reconstruct a missing document. Files are processed locally, without accounts, uploads or telemetry. Certificate trust and validity dates are separate from integrity. Revocation and trusted timestamp verification are not performed. ... -
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EliteRoms
Elite Development Project by hassanmirza01
you can follow progress, new stuff at https://www.EliteDevelopment.com.pk Support on: https://Paypal.me/sheriii999 -
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Due to the broken state of the Rising OS project, updates have been suspended. New project: https://sourceforge.net/projects/infinity-x-unofficial/ The phones I have: Xiaomi Mix 2s (polaris) (Discontinued) OnePlus 7 Pro (guacamole) OnePlus 7T Pro (hotdog) RedMagic 9 Pro (tiro)
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