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Application Instance Certificate and Sofware Certificate
March 21, 2014
14:11, EET
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Mel
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Hi,

OPC UA supports two different certificate types.
The Application Instance Certificate used to exchange the public key to encrypt the OpenSecureChannel-message
and the SoftwareCertificate which is exchanged during the Session.

What is the SoftwareCertificate used for?
There exist also the signed version of this certificate in the spezification.

Thank you very much,
Mel

March 21, 2014
14:57, EET
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Jouni Aro
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The purpose of the Software Certificates is to provide information about the (certified) profiles which the application supports. But they are not used in practice, yet.

March 25, 2014
8:21, EET
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Mel
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Thanks again for the answer :-)

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