ev-certificate-validator

name	ev-certificate-validator
description	Validate EV code signing certificate chain and timestamp for Windows SmartScreen
allowed-tools	Read, Grep, Bash
tags	["windows","codesigning","ev-certificate","security","validation"]

ev-certificate-validator

Validate EV (Extended Validation) code signing certificate chain and timestamp to ensure Windows SmartScreen compatibility.

Capabilities

• Verify certificate chain validity
• Check timestamp presence and validity
• Validate EV certificate attributes
• Check certificate expiration
• Verify signature algorithm strength
• Validate publisher information

Input Schema

{
  "type": "object",
  "properties": {
    "signedFile": { "type": "string" },
    "checkSmartScreen": { "type": "boolean", "default": true }
  },
  "required": ["signedFile"]
}

Validation Commands

# Verify signature with chain
signtool verify /pa /all /v signed.exe

# Check certificate details
certutil -dump signed.exe

# Verify timestamp
signtool verify /pa /tw signed.exe

Related Skills

• windows-authenticode-signer
• code-signing-setup process