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AuthorForum: PowerTCP SSL for ActiveX
Topic: CertificateList - KeyUsageSelect strange behaviour

From: Durban, South Africa
Posts: 80
Member Since: 07/11/02
posted August 2, 2011 3:56 PM

On a CertificateList I setup a filter to only show certain certificates that must have at least 3 of the uses I need as follows.

With CertificateList1
    .KeyUsageSelect = usageClientAuthentication + usageDataEncipherment + usageServerAuthentication
    .StoreLocation = locationLocalMachine
    .StoreName = "ROOT"
  End With

The problem is that the filter does not seem to work. It filters some certificates out but for example shows a certificate with (Client Authentication,Code Signing,Email Protection,Server Authentication,Time Stamp Signing) - I used your CertInfo VB6 form to get its information. That certificates should not be in the list as it does not have usageDataEncipherment. More strangley if I do a CERT.KeyUsage (usageServerAuthentication + usageClientAuthentication + usageDataEncipherment) method call on that certificate then it returns TRUE.

Am I missing something?
K M Drake

From: Utica, NY USA
Posts: 3406
Member Since: 07/14/00
posted August 8, 2011 11:52 AM

Thanks for reporting this. The problem has been confirmed and submitted as issue #5495.

For updates on the status of this issue, please contact Jamie Powell (jamie.powell@dart.com).


-Non-current subscribers must contact sales@dart.com to update subscription and receive continued support as needed.

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