The following errata report has been verified for RFC7170,
"Tunnel Extensible Authentication Protocol (TEAP) Version 1". 

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You may review the report below and at:
https://www.rfc-editor.org/errata/eid5127

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Status: Verified
Type: Technical

Reported by: Tuure Vartiainen <varti...@open.com.au>
Date Reported: 2017-09-25
Verified by: Paul Wouters (IESG)

Section: 5.2.

Original Text
-------------
IMSK = First 32 octets of TLS-PRF(EMSK, "teapbind...@ietf.org" |
     "RFCORIGINAL_TEXT" | 64)

Corrected Text
--------------
IMSK = First 32 octets of TLS-PRF(EMSK, "teapbind...@ietf.org" |
     "RFCCORRECTED_TEXT", 64)

Notes
-----
According to

RFC5246 The Transport Layer Security (TLS) Protocol Version 1.2

5.  HMAC and the Pseudorandom Function

"TLS's PRF is created by applying P_hash to the secret as:

      PRF(secret, label, seed) = P_<hash>(secret, label + seed)"

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RFC7170 (draft-ietf-emu-eap-tunnel-method-10)
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Title               : Tunnel Extensible Authentication Protocol (TEAP) Version 1
Publication Date    : May 2014
Author(s)           : H. Zhou, N. Cam-Winget, J. Salowey, S. Hanna
Category            : PROPOSED STANDARD
Source              : EAP Method Update
Stream              : IETF
Verifying Party     : IESG

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