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Re: final q re sigs.

At 02:07 PM 24/07/2000 +0900, sen_ml@xxxxxxxxxxx wrote:

<snip>

> 2) H(a + b + c) = 160 bit value to be fed into the sig. alg.

i think it's closest to this.

I also thought this, however I needed confirmation...can anyone else confirm?

my interpretation is:

H(actual data +
  version + signature type + pubkey algo + hash algo +
  hashed subpacket length + hashed subpackets +
  0x04 + 0xff + length of hashed data from sig packet)

or

H(actual data +
  fields of sig packet from version through hashed subpackets +
  trailer of six octets a la section 5.2.4)

perhaps someone else can confirm ;-)

note that your definition of (b) says "incl. subpackets", but
actually, you don't include unhashed subpackets...but you probably
meant that anyway, right?

Yes :)



Regards


Erron Criddle
Comasp Ltd.
Level 2, 45 Stirling Hwy
NEDLANDS  WA  6009
Australia

Fax: 08 9386 9473
Tel: 08 9386 9534

http://www.comasp.com
ejc@xxxxxxxxxx