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RFC 3414, "User-based Security Model (USM) for version 3 of the Simple Network Management Protocol (SNMPv3)", December 2002

Note: This RFC has been updated by RFC 5590

Source of RFC: snmpv3 (ops)
See Also: RFC 3414 w/ inline errata

Errata ID: 278
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Piotr Bandur
Date Reported: 2003-10-28

Section 6.3.1 says:

   4) Prepend K2 to the result of the step 4 and calculate MD5 digest
      over it according to [RFC1321].  Take the first 12 octets of the
      final digest - this is Message Authentication Code (MAC).

It should say:

   4) Prepend K2 to the result of the step 3 and calculate MD5 digest
      over it according to [RFC1321].  Take the first 12 octets of the
      final digest - this is Message Authentication Code (MAC).

Notes:

In Section 7.3.1:
4) Prepend K2 to the result of the step 4 and calculate SHA digest
over it according to [SHA-NIST]. Take the first 12 octets of
the final digest - this is Message Authentication Code (MAC).
Should be:
4) Prepend K2 to the result of the step 3 and calculate SHA digest
over it according to [SHA-NIST]. Take the first 12 octets of
the final digest - this is Message Authentication Code (MAC).

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