Unalbe to match MAC value

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Darsh Patil

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Jun 30, 2021, 9:39:05 AM6/30/21
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I am using  generateCBC_MACImpl() function from JCESecurityModule.java for generation of MAC value but dose not match.

murtuza chhil

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Jul 1, 2021, 10:52:49 PM7/1/21
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You should provide more information.

What data was used to create the MAC in the message?
What data was used to create the validation MAC?
Was MAC validated after removal of the MAC from the message so that the field was empty and the bit in the bitmap unset? 
Does the MAC validation key+checkdigit match the MAC  key + checkdigits of the MAC creator?

-chhil

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