Re: 10.2 grammar (naked encrypted packets?)

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On Sun, 29 Mar 1998, Hal Finney wrote:

> > Noting the grammar says:
> >
> > OP Message :- Encrypted Message
> >
> > Encrypted Message :- Symmetrically Encrypted Data Packet
> >
> > So, a SEDP without any info how to decrypt it is a valid OP message?
> 
> Yes, that's the format PGP 2.X uses for a conventionally encrypted
> message.  If there are no ESKs the SEDP is assumed to be encrypted with
> IDEA, using the Simple rules to convert passphrase to key (i.e. hash
> the passphrase with MD5).

I think it would be clearer to say something like IDEA/MD5S2K SEDP (for
those who don't like V3 or PGP2) since SEDP | ESK,SEDP sort of implies the
isolated SEDP has an identical definition, when it actually is narrower. 

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