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Install and Renew Certificates on Mac OS X 10.5 and 10.6 - Manual Steps

Install the MIT CA (Certificate Authority)

Click on the thumbnails to view the full size images.

  1. If you are viewing this page with Safari, click on the following link to download the certificate: MIT CA
    Alternatively, paste the following URL into Safari:
    Result: This downloads the file "mitca.crt" to Safari's default Downloads folder in the your home directory (unless you specified another default location).
  2. Navigate in the Finder to userhome > Downloads.
  3. Double-click mitca.crt to open.
    Downloads in finder

  4. Keychain Access opens and prompts for where to store the certificate. Select the System keychain and press OK
    Keychain Access add certificates screen

  5. Enter your Mac OS X login password and click OK. You must have administrator privileges on the computer.
    Mac OS X login screen

    If you are not an administrator on the computer, you will receive the following message. You will need a user who is an administrator on the computer to install the CA.
    Error: incorrect name or password

  6. You will be prompted to set the trust settings for the certificate. Click Always Trust.
    Set trust settings

  7. Enter the Mac OS X login password.
    Mac OS X login

    Result: The MIT CA is added to the Keychain.

Install the MIT Personal Certificate

  1. Navigate, in Safari, to
  2. Enter your credentials and click Next.
    Identify Yourself

  3. On the page Generate a Private Key, leave the Key Size at the highest grade for your browser.
    The Certificate Lifetime gives the default number of days until this personal certificate expires.
    Click Next to accept the defaults.
    Generate a Private Key

    Result: A confirmation page indicates that the certificate has been installed.
    Installing Certificate

Delete Expired or Duplicate Certificates

The page Delete MIT Personal Certificates in Safari on Mac OS X 10.5 and 10.6 does not exist.

Use CertAid 2.0 to Configure Existing Certificates on Mac OS X 10.5 and 10.6

The page Use CertAid 2.0 to Configure Existing Certificates on Mac OS X 10.5, 10.6 & 10.7 does not exist.

Clear the Browser Cache

  1. Follow the menu path Safari > Empty Cache.

  2. In the confirmation window, click Empty.

  3. Follow the menu path Safari > Quit Safari.

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IS&T Contributions

Documentation and information provided by IS&T staff members

Last Modified:

January 16, 2013

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