What is SCST?   

Various crypto protocols indeed uses SHA-1 (typically in more complex form like 
HMAC) for message authentication.  And each of them will obviously have some 
identifier for that.  But that has nothing to do with CHAP.  For CHAP in iSCSI, 
you have to look in the iSCSI RFC, and you will find in there only a single 
identifier, which is for CHAP using MD5.

It would certainly be possible to define CHAP using SHA-1 (or for that matter 
SHA-2) but that hasn’t been done and there hasn’t been a significant push for 
it.  While MD5 has issues, those do not affect its use in CHAP.

        paul

> On Jan 3, 2015, at 4:15 AM, Tejas vaykole <[email protected]> wrote:
> 
> Hello,
> I am looking at the SCST target code, where it looks like it supports the 
> SHA-1 Algorithim for message digest generation.The number assigned to SHA-1 
> is '7'
> 
> Thanks.
> Tejas
> 
> On Monday, September 15, 2014 11:30:52 AM UTC+5:30, Uli wrote:
> >>> Tejas vaykole <[email protected]> schrieb am 11.09.2014 um 12:22 in 
> Nachricht <[email protected]>: 
> > Hello, 
> > 
> > I am trying out with the open-iscsi initiator.I see that the initiator uses 
> > MD5 algorithm for CHAP. 
> > I need help in configuring the initiator to use SHA-1 hashing Algorithm for 
> > CHAP. 
> 
> Whcih algorithm number has been assigned to SHA-1 for CHAP? Ic ould not find 
> it. 
> 
> > 
> > Thanks. 
> > Tejas 

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