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

Name: ev-certificate-validator
Rating: 78
Author: a5c-ai

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

json

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

Validation Commands

powershell

# 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