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secure channel initiation mode implicit

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mikegigom
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secure channel initiation mode implicit

Post by mikegigom » Sun Jan 29, 2017 8:44 am

Hello, it's me again.

Can somebody here explain the mechanism of secure channel initiation on mode implicit? I already have a look at the specification, the introduction about GlobalPlatform initiation mode implicit is very simple.

So hope expert guide me how to do it.

Any help is appreciated.

tay00000
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Re: secure channel initiation mode implicit

Post by tay00000 » Sun Jan 29, 2017 10:36 am

SCP 02 ? SCP 03 ? Which type ?

Crawford
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Re: secure channel initiation mode implicit

Post by Crawford » Mon Jan 30, 2017 9:18 am

The steps are much the same as the explicit, except there is not INIT-UPDATE/EXT-AUTH commands to deal with. When the first secured APDU is received (CLA = 0x84), you follow the process to generate session keys and verify the MAC. The card spec outlines how to generate a MAC with the session keys.

mikegigom
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Re: secure channel initiation mode implicit

Post by mikegigom » Tue Jan 31, 2017 1:46 am

Crawford wrote:The steps are much the same as the explicit, except there is not INIT-UPDATE/EXT-AUTH commands to deal with. When the first secured APDU is received (CLA = 0x84), you follow the process to generate session keys and verify the MAC. The card spec outlines how to generate a MAC with the session keys.


Thanks very much for your time and answer.

Crawford
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Re: secure channel initiation mode implicit

Post by Crawford » Tue Jan 31, 2017 2:49 am

I am glad to be of assistance.

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