whatsyoursign ☆
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Description:
Shows a files cryptographic signing information
Type: Cask  |  Latest Version: 3.2.1@0  |  Tracked Since: Dec 28, 2025
Links: Homepage  |  @objective_see  |  formulae.brew.sh
Category: Security
Tags: security utility developer-tools macos code-signing
Install: brew install --cask whatsyoursign
About:
What's Your Sign? is a lightweight menu bar utility that displays the cryptographic signing information of any file. By simply dragging and dropping a file onto its interface, users can instantly view details such as the signing authority, certificate chain, and validation status. This tool provides a quick and easy way to verify file provenance and integrity before execution.
Key Features:
  • Menu bar utility for quick access
  • Drag-and-drop interface for file analysis
  • Displays signing authority and certificate details
  • Validates code signatures against Apple's root certificates
Use Cases:
  • Verifying the authenticity of downloaded applications before installation
  • Checking if a file has been altered or tampered with since it was signed
  • Inspecting the developer signature of system binaries
Alternatives:
  • codesign – Built-in command-line tool; What's Your Sign? provides a graphical interface for the same information.
  • KnockKnock – Also by Objective-See; focuses on persistent software and persistence mechanisms rather than individual file signatures.
Version History
Detected Version Rev Change Commit
Jan 17, 2026 10:32pm 3.2.1 0 VERSION_BUMP 13a51f3a
Jan 9, 2026 10:43pm 3.2.0 0 VERSION_BUMP db13289f
Dec 24, 2023 9:24am 2.2.1 0 VERSION_BUMP 9c677338
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