[tsvwg] Query regarding COPS RFC-2748 & RFC- 4261

Shweta r <shweta.k.r@huawei.com> Wed, 06 March 2019 04:41 UTC

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From: Shweta r <shweta.k.r@huawei.com>
To: "tsvwg@ietf.org" <tsvwg@ietf.org>
CC: Santosh Ukkali <santoshukkali@huawei.com>, Sharath Chandra B <sharathcb@huawei.com>
Thread-Topic: Query regarding COPS RFC-2748 & RFC- 4261
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Date: Wed, 06 Mar 2019 04:41:13 +0000
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Subject: [tsvwg] Query regarding COPS RFC-2748 & RFC- 4261
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Hi Group,

Greetings.

I have a doubt regarding COPS RFC-2748 :


1)      RFC-2748 mentions the use of minimum of HMAC-MD5-96, so it means different algorithms can be used with different C-Types ?

If so is there any standard for this ?



[cid:image001.png@01D4CD42.21CD1110]



[cid:image002.png@01D4CD47.5EE14260]



If we want to use HMAC-SHA1 in our COPS implementation, what should be the C-type, how peer will get to know about the algortithm used ?


I have a doubt regarding RFC- 4261:


1)  In 4261, if rfc-4261 is implemented does it mean that  no need to use rfc 2478 (HMAC-Md5-96) object for message integrity ?



2) rfc-4261 is implemented, the integrated object is required, then Client-Open and Client-Accept will have  2 integrity objects ,

     C-Type = 1, HMAC digest

    & Client-Type 0  4.1.  The TLS Message Integrity Object (Integrity-TLS)  ?





[cid:image003.png@01D4CD47.5EE14260]


________________________________

Regards,
Shweta K R
Tester - VPP, 2012 LAB

Huawei Technologies India Pvt. Ltd.
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