Document Signature Verification

Install the Si Cruse Consulting CA certificate to verify documents signed by sign.sicruse.com

Download CA Certificate

Certificate Information

Organization:Si Cruse Consulting, LLC
Common Name:Document Signing CA
Valid From:Oct 26, 2025
Valid Until:Oct 24, 2035

Installation Instructions

Adobe Acrobat & Acrobat Reader

Important: Adobe Acrobat does NOT use the operating system certificate store. You MUST import the certificate directly into Adobe Acrobat for document signature verification to work, even if you've already installed it in your OS.

Adobe Acrobat and Acrobat Reader maintain their own separate list of trusted certificates. Follow these steps to import and trust the CA certificate:

1

Open Adobe Acrobat or Acrobat Reader

Launch the application on your computer.

2

Access Preferences

  • Windows: Edit menu → Preferences
  • macOS: Acrobat menu → Preferences (or press ⌘,)
3

Navigate to Signatures

In the Preferences window, select "Signatures" from the left-hand menu.

4

Manage Trusted Certificates

Under "Identities & Trusted Certificates", click the "More..." button.

5

Import the Certificate

In the "Digital ID and Trusted Certificate Settings" window:

  • Select "Trusted Certificates" from the left-hand list
  • Click the "Import..." button
  • Browse to the downloaded ca.crt file
  • Select the file and click "Open"
6

Configure Trust Settings

After importing, locate "Document Signing CA" in the list:

  • Select the certificate
  • Click the "Edit Trust..." button
  • In the "Edit Certificate Trust" dialog, enable:
  • ✓ Use this certificate as a trusted root
  • ✓ Certified documents
  • ✓ Signed documents or data

Click "OK" to save the trust settings.

7

Finish

Click "OK" or "Close" to exit the dialogs. The certificate is now trusted in Adobe Acrobat.

Verification

To verify the certificate was installed correctly:

  1. Open a document signed by sign.sicruse.com
  2. Click on the signature panel in the document
  3. The signature should now show as valid and trusted
  4. You should see "Document Signing CA" and "Si Cruse Consulting, LLC" in the certificate details

Note for Multiple Users

Each user on a computer must import the certificate into their own Adobe Acrobat installation. The certificate is stored per-user, not system-wide.

Verifying Document Signatures

Important for Adobe Acrobat Users: If you use Adobe Acrobat or Acrobat Reader, you must also follow the instructions in the above. Adobe products do not use the operating system certificate store.

Once you have installed the CA certificate, you can verify documents signed by sign.sicruse.com:

PDF Documents

  1. Open the signed PDF in your PDF reader (Adobe Acrobat, Preview, etc.)
  2. Look for the signature panel or signature field
  3. Click on the signature to view details
  4. The signature should show as valid and trusted
  5. You should see "Si Cruse Consulting, LLC" as the signing authority

What a Valid Signature Looks Like

  • ✓ Green checkmark or "Valid" indicator
  • ✓ "Signed by: Document Signing CA"
  • ✓ "Certificate issued by: Si Cruse Consulting, LLC"
  • ✓ "Document has not been modified since signing"

Troubleshooting

Certificate still shows as untrusted

Try restarting your browser or application. Some programs cache certificate information.

Cannot find the certificate after installation

Search for "Document Signing CA" or "Si Cruse Consulting" in your certificate store.

Installation requires administrator access

Contact your system administrator if you don't have the necessary permissions to install certificates.

Still having issues?

Contact support at si@sicruse.com for assistance.

Security Notice

By installing this certificate, you are trusting Si Cruse Consulting, LLC to verify the authenticity of documents signed through our signing service. Only install this certificate if you trust our organization.

Certificate expires: October 24, 2035