? incompatibilty issue ?

[vedaal at nym.hush.com]

Happened to notice a minor incompatibility that was not there in
previous versions of gnupg 1.x, before IDEA was included.

Created the following symmetrically encrypted message using Disastry's
version of PGP 2.x

-----BEGIN PGP MESSAGE-----
Version: PGP 2.6.3ia-multi06
Comment: Passphrase: sss

pgAAADPRnyFTsp5qCgKjgKpouoMqq1orcvEsZry5uRprNq9Qce3FqUzZT8BbeuGO
Vah6crraHF4=
=8GSP
-----END PGP MESSAGE-----

This was the command, using Twofish as the preferred cipher:

V:zdm6dj32>pgp -ca -jt c:hct.txt

TWOFISH chosen for conventional encryption.
Pretty Good Privacy(tm) 2.6.3ia-multi06 - Public-key encryption for
the masses
(c) 1990-96 Philip Zimmermann, Phil's Pretty Good Software. 2002-04-22
International version - for use everywhere (including USA).
Current time: 2014/03/12 13:42 GMT

PGP is now using TWOFISH with MD5.

You need a pass phrase to encrypt the file.
Enter pass phrase: sss

Output file 'c:hct.asc' already exists.  Overwrite (y/N)? y
Now, when trying to decrypt, this is what happens in GnuPG 1.4.16 :
C:g1416>gpg -d c:hct.asc
gpg: armor: BEGIN PGP MESSAGE
gpg: armor header: Version: PGP 2.6.3ia-multi06
gpg: armor header: Comment: Passphrase: sss
:encrypted data packet:
        length: 51
gpg: assuming IDEA encrypted data
gpg: session key: `1:9F6E6800CFAE7749EB6C486619254B9C'
gpg: out of  memory while allocating 1746465999 bytes
Is there something in the way that pgp 2.x makes symmetrical messages,
that gnupg recognizes as 2.x, and therefore assumes IDEA ?
(I did not use 'pgp 2'  in the options in gpg.conf.)

vedaal 
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