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I am implementing DTLS 1.2 and using ECDHE_RSA_AES_128_GCM_SHA256 cipher suit.

Below is my client finished message

enter image description here

Can anyone explain this message?

How many bytes for verify data?

Is there authentication tag if yes then how many bytes for authentication tag?

And how many bytes for nonce?

And is all the message encrypted if not then how many bytes are encrypted?

How can i verify this message?

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  • $\begingroup$ You should stop asking the same question from different threads. If necessary edit this question $\endgroup$ – Makif May 10 '16 at 12:29
  • $\begingroup$ @Makif i edited but no one answer it yet. If you know the answer kindly post it. $\endgroup$ – Ahsan Younis May 11 '16 at 4:28
  • $\begingroup$ @Makif, since this is DTLS rather than TLS, perhaps you'd like to answer this separately? $\endgroup$ – otus May 11 '16 at 6:25
  • $\begingroup$ @otus i dont know much about DTLS, i answered the first question because i thought that it was about TLS. My objection is that those are the same questions, although the first one asks for "TLS 1.2 finished message" in the subject of the question, question itself asks for DTLS finished message. $\endgroup$ – Makif May 11 '16 at 7:26
  • $\begingroup$ @Makif, yeah, since your answer is about TLS, I think it makes sense to have these separate. $\endgroup$ – otus May 11 '16 at 8:23

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