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RFC 6655, "AES-CCM Cipher Suites for Transport Layer Security (TLS)", July 2012

Source of RFC: IETF - NON WORKING GROUP
Area Assignment: sec
See Also: RFC 6655w/ inline errata

Errata ID: 3761
Status: Verified
Type: Editorial
Publication Format(s) : TEXT

Reported By: Sandeep S. Kumar
Date Reported: 2013-10-22
Verifier Name: Sean Turner
Date Verified: 2014-01-14

Section 3 says:

In DTLS, the 64-bit seq_num is the 16-bit epoch concatenated with the
48-bit seq_num.

It should say:

In DTLS, the 64-bit sequence number is the 16-bit epoch concatenated 
with the 48-bit sequence_number in the order they appear on the wire.

Notes:

In DTLS 1.2 (RFC 6347, Sec 4.3.1.), the 48 bit sequence number is indicated as sequence_number. There is no mention of seq_num in the DTLS RFC.
The additional ordering information is used to keep it consistent with MAC computation in DTLS RFC 6347, Sec 4.1.2.1.)

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