* Hadmut Danisch:
The only precise definition I found is in a law dictionary where it is
defined as a legal term.
The OED might also be helpful:
B. [...] 2. a. A chief actor or doer; the chief person engaged in
some transaction or function, esp. in relation to one employed by or
acting
I was manager of development for Project Athena beginning
in 1985. Amongst our projects was Kerberos, and, as you
know, it was a direct implementation of Needham-Schroeder.
Schroeder had been Jerome Saltzer's Ph.D. student and
Saltzer was the MIT faculty member in charge of the
technical side
tmcghan quoted:
SDSI's active agents (principals) are keys: specifically, the private keys
that sign statements. We identify a principal with the
corresponding verification (public) key...
Calling a key a principal (and saying that a key speaks) is just
a poetic language used in SDSI/SPKI.
I like the definition in Kaufman-Perlman-Speciner:
A completely generic term used by the security community to include
both people and computer systems. Coined because it is more
dignified than 'thingy' and because 'object' and 'entity' (which also
means thingy) were already overused.
Hi,
On Wed, Apr 26, 2006 at 03:18:40PM -0400, Sean W. Smith wrote:
I like the definition in Kaufman-Perlman-Speciner:
A completely generic term used by the security community to include
both people and computer systems. Coined because it is more
dignified than 'thingy' and because
On Wed, Apr 26, 2006 at 06:33:43PM +0200, Hadmut Danisch wrote:
Some say a principal is someone who participates in a cryptographical
protocol.
The way I see it, the common English sense is direct participant, not
a third party.
During TGS requests the Kerberos KDC is a *principal* in the TGS
from: http://theory.lcs.mit.edu/~rivest/publications.html
Perspectives on Financial Cryptography (Revisited)
by Ronald L. Rivest.
Financial Cryptography '06 Conference Keynote. (Update of talk given for
Financial Cryptography '97)
PowerPoint presentation excerpt follows:
SDSI's active agents
Victor Duchovni wrote:
So with Kerberos the word hasW its narrower named security entity
technical meaning. With X.509 one tends to talk of subjects, issuers,
registration authorities, certification authorities, ... and the word
principal is less common.
part of this has been that x.509 has
On Wed, 26 Apr 2006 18:33:43 +0200, Hadmut Danisch [EMAIL PROTECTED]
wrote:
I need to solve a dispute. Someone claims, that 'principal' is an
established 'concept' introduced by Roger Needhams, but could not give
any citation. Someone else confirms this and claims, that 'principal'
is
Are there different editions of Kaufman-Perlman-Speciner ?
I got that definition from the glossary in the 2nd edition. I'm
pretty sure it was in the glossary in the first edition as well, but
I can't seem to find my copy anymore!
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