Agreed. Yoshihiro Ohba
-----Original Message----- From: 6tisch [mailto:[email protected]] On Behalf Of Giuseppe Piro Sent: Tuesday, June 09, 2015 10:06 PM To: Malisa Vucinic; Xavier Vilajosana Cc: [email protected]; [email protected] Subject: Re: [6tisch] Example for minimal with security enabled +1 Malisa proposal works fine with me, with the modification about KID suggested by Robert. Note that the usage of Key Id Mode = 1 for identifying shared keys is also implemented within the OpenWSN extension we are implementing (from POLIBA team) and that will be released soon: https://github.com/openwsn-berkeley/openwsn-fw/pull/167/ Giuseppe On Tue, Jun 9, 2015 at 9:36 AM, Robert Cragie <[email protected]> wrote: > It's a minor point but using KID is slightly confusing as it suggests > "Key ID" and thus "Key Identifier". I would suggest using "IDX" or > something to represent a specific Key Index (which forms the whole of > the Key Identifier field in the case of Key ID mode 1) > > Also, I think the octet stream should be: > > AD IDX#0 > > Robert > > On 8 June 2015 at 22:39, Xavier Vilajosana > <[email protected]> > wrote: >> >> Dear Malisa, >> >> thanks. I will wait for consensus on this example and if approved I >> will add it to the examples section in minimal. >> >> Others, if there is any objection please say it during the week so we >> can move forward on our plans to publish v7 of the draft by the end of the >> week. >> >> regards, >> Xavi >> >> 2015-06-08 21:13 GMT+02:00 Malisa Vucinic <[email protected]>: >>> >>> All, >>> >>> As per the interim call last Friday, attached is an example I >>> suggest to be included in draft-ietf-6tisch-minimal. >>> >>> Summary: >>> - Uses KeyIdMode ’01' for both K1 and K2 as a tradeoff between >>> flexibility and overhead. (Option 2 from >>> http://www.ietf.org/mail-archive/web/6tisch/current/msg03579.html) >>> - Elides frame counter from the frame, as per TSCH mode (cf. Sec >>> 7.3.2 of 154E std) >>> - Uses implicit frame counter size of 5 bytes, and nonce creation >>> from 5 byte ASN, as per TSCH mode (cf. Sec 7.4.1.4 of 15.4E std) >>> >>> Mališa >>> >>> ===================== >>> >>> NEW: >>> >>> 10.4. Example 4. Auxiliary Security Header >>> >>> The example illustrates content of the Auxiliary Security Header >>> as mandated by >>> this draft, if security is enabled. Security Level in the example >>> is set to ENC-MIC-32 (5). >>> >>> >>> 1 >>> 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>> |L = 5|M=1|1|1|0|Key Index = KID| >>> +-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+ >>> >>> Stream of bytes (in LSB format) that derive from the schematic header: >>> >>> 6D KID#0 >>> >>> Description of the fields in the example: >>> >>> #Security Control (1 byte) >>> L = Security Level ENC-MIC-32 (5) >>> M = Key Identifier Mode (0x01) >>> Frame Counter Suppression = 1 (omitting Frame Counter field) >>> Frame Counter Size = 1 (construct Nonce from 5 byte ASN) >>> Reserved = 0 >>> >>> #Key Identifier (1 byte) >>> Key Index = KID (deployment-specific KeyIndex parameter that >>> identifies the cryptographic key) >>> >>> >>> _______________________________________________ >>> 6tisch mailing list >>> [email protected] >>> https://www.ietf.org/mailman/listinfo/6tisch >> >> >> >> _______________________________________________ >> 6tisch mailing list >> [email protected] >> https://www.ietf.org/mailman/listinfo/6tisch >> > > > _______________________________________________ > 6tisch mailing list > [email protected] > https://www.ietf.org/mailman/listinfo/6tisch > -- Giuseppe Piro, PhD Post Doc Researcher DEI, Politecnico di Bari via Orabona 4 - 70125 (Bari), Italy. email: [email protected] phone: +39 080 5963301 web: telematics.poliba.it/piro _______________________________________________ 6tisch mailing list [email protected] https://www.ietf.org/mailman/listinfo/6tisch _______________________________________________ 6tisch mailing list [email protected] https://www.ietf.org/mailman/listinfo/6tisch
