Page Comparison

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1. Open Acrobat by clicking on it if it's in your dock, or by going to your Applications folder and double clicking Acrobat Pro/Acrobat Pro DC/Acrobat Reader DC
2. Go to the Acrobat Menu and slide down to Preferences
3. slide Scroll down to Signatures and click on it
4. in the Identities & Trusted Certificates section, click More
5. Click Add ID (ID card icon with plus symbol)
6. Leave the default selection of My existing digital ID from: A file and click Next
7. Browse to your Downloads folder, click on the .P12 file, and click Open
8. Enter the password from the stache Stache field labeled Encrypted file password or paste the previously copied password (Command-V or choose Paste from up top in the Edit menu)
9. Click Next
10. Click Finish
11. Click Close
12. Open the application Keychain Access found in the Utilities folder in Applications in Finder
13. If prompted, use your login password to unlock Keychain Access.
14. In the left-hand column, select login
15. In the row at the top of the window, select My Certificates
16. Drag and drop the .P12 file into My Certificates
17. Paste (Command-V or choose Paste from up top in the Edit menu) the Encrypted file password you copied from Stache into the Password prompt.
18. Click on the > symbol beside the new certificate.
19. Double-click your email address that just dropped down.
20. Click Access Control
21. Click the newly imported Digital ID that has your FIrstName LastName <emailaddress>up in the Usage Options headingthe + button
22. Navigate to Application to Adobe Acrobat 2020 and select Adobe Acrobat
23. Click Add
24. Click Save Changes
25. Enter your login password
26. Close Keychain Access
27. Go to the Acrobat Menu and slide down to Preferences
28. Scroll down to Trust Manager and click on it.  The reason for these next steps is listed towards the bottom of the wiki under Update the Adobe Trusted Root Certificates To Allow For Successful Validation of UT Employee Signed Documents
29. Tick the box Load Trusted Root Certificates From An Adobe AATL Server. This option allows Acrobat or Reader to automatically download trust settings from an Adobe server. These trust settings ensure that the user or organization associated with the certificate has met the assurance levels of the Adobe Approved Trust List (AATL) program.
30. Tick the box Ask Before Updating.
31. Click Update Now.
32. You may repeat these steps for the Automatic European Union Trusted Lists (EUTL) updates.
33. Click OK
34. Restart Adobe Acrobat/Reader to put the change into effect.
35. Reopen Acrobat
36. Go to the Acrobat Menu and slide down to Preferences
37. Scroll down to Signatures and click on it
38. in the Identities & Trusted Certificates section, click More
39. Click the ID that has your FIrstName LastName <emailaddress>. There are two.  Select the one that has Mac Keychain Store under the Storage Mechanism column
40. At the top, click Certificate Details.  The following steps will resolve all the certificate path errors.
41. At the left column, select The University of Texas at Austin RSA CA
42. Click the Trust tab
43. Click Add to Trusted Certificates... and OK on the Adobe prompt
44. On the pop-up window, make sure to tick all four boxes including the one that says Use this certificate as a trusted root.
45. Click Trust
46. Click OK
47. Click OK again.  The certificate path should be valid now.
48. up in the Usage Options heading (pencil icon), slide down and click Use for signing. Do this again for Use for Certifying and Use for Encryption. Note: Acrobat Reader DC will only have the Use for signing option.
49. Click Close
50. Click OK
51. To test it out, you can open a PDF document and sign a document AFTER you Update the Adobe Trusted Root Certificates (below).  If prompted by Keychain Access, enter your login password and click Always Allow.  If you press enter, it will only allow it once.

For Windows:

1. Double clicking the downloaded .p12 file will open Certificate Import Wizard.
   Go through the wizard. You shouldn't have to tick off anything. Do not check the box to force strong protection or it will make you enter your password every time you want to use the certificate for signing. You will need the password from the stache entry in your encryption and mail signing cert.
2. Finish the wizard.

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