Re: PGP interoperability

2012-06-04 Thread Ben McGinnes
On 31/05/12 5:32 PM, Werner Koch wrote:
 On Wed, 30 May 2012 21:42, expires2...@rocketmail.com said:
 
 And shared the fact privately with Symantec?
 
 I heard that it is just a bug introduced by the marketing suits.
 The PGP library never dropped support for DSA2.

Was there any explanation of why the marketing people dropped or
wanted to drop the functionality?


Regards,
Ben



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Re: PGP interoperability

2012-06-04 Thread Werner Koch
On Mon,  4 Jun 2012 10:49, b...@adversary.org said:

 Was there any explanation of why the marketing people dropped or
 wanted to drop the functionality?

Maybe outdated technical specs which made it to the marketing dept.  I
don't know - you need to ask Symantec.


Shalom-Salam,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.


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Re: PGP interoperability

2012-06-04 Thread Ben McGinnes
-BEGIN PGP SIGNED MESSAGE-
Hash: SHA512

On 5/06/12 2:47 AM, Werner Koch wrote:
 On Mon,  4 Jun 2012 10:49, b...@adversary.org said:
 
 Was there any explanation of why the marketing people dropped or 
 wanted to drop the functionality?
 
 Maybe outdated technical specs which made it to the marketing
 dept. I don't know - you need to ask Symantec.

Fair enough.  Most people I correspond with use GPG, I'll worry about
it if I ever have trouble with someone encrypting to my El-Gamal key.


Regards,
Ben

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Re: PGP interoperability

2012-06-04 Thread Werner Koch
On Mon,  4 Jun 2012 19:11, b...@adversary.org said:

 Fair enough.  Most people I correspond with use GPG, I'll worry about
 it if I ever have trouble with someone encrypting to my El-Gamal key.

Not for a compliant OpenPGP implemenations.  From RFC-4880:

   Implementations MUST implement DSA for signatures, and Elgamal for
   encryption.  Implementations SHOULD implement RSA keys (1).  RSA


Salam-Shalom,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.


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Re: PGP interoperability

2012-05-31 Thread Werner Koch
On Wed, 30 May 2012 21:42, expires2...@rocketmail.com said:

 And shared the fact privately with Symantec?

I heard that it is just a bug introduced by the marketing suits.  The
PGP library never dropped support for DSA2.


Salam-Shalom,

   Werner

-- 
Die Gedanken sind frei.  Ausnahmen regelt ein Bundesgesetz.


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Re: PGP interoperability

2012-05-30 Thread MFPA
Hi


On Friday 25 May 2012 at 10:22:45 AM, in
mid:4fbf4f65.3000...@vulcan.xs4all.nl, Johan Wevers wrote:


 Maybe the NSA has found a workable solution for
 factoring but not for DL?  

And shared the fact privately with Symantec?




-- 
Best regards

MFPAmailto:expires2...@rocketmail.com

Wisdom is a companion to age; yet age may travel alone.


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Re: PGP interoperability

2012-05-25 Thread Johan Wevers
On 25-05-2012 4:20, Robert J. Hansen wrote:

 Looking over the PGP product offerings after their acquisition by
 Symantec, it seems they have dropped support for 2048- and 3072-bit DSA.
  This decision makes no sense to me, and is sufficiently weird that I
 wonder if the marketing copy is horribly in error.

Or something else is wrong:

 product they offer:
 
   * Diffie-Hellman
   * DSA (1024-bit keys only)
   * RSA (up to 4096-bit keys)

Seems they want to push everyone to RSA. I wonder why? The patent issue
is over so that can't be it.

I understood that it is believed that the discrete log problem is
possibly harder than factoring, since solving DL solves factoring but
not the other way around. Maybe the NSA has found a workable solution
for factoring but not for DL?

-- 
ir. J.C.A. Wevers
PGP/GPG public keys at http://www.xs4all.nl/~johanw/pgpkeys.html


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Re: PGP interoperability

2012-05-25 Thread Hubert Kario
On Friday 25 of May 2012 11:22:45 Johan Wevers wrote:
 On 25-05-2012 4:20, Robert J. Hansen wrote:
  product they offer:
  * Diffie-Hellman
  * DSA (1024-bit keys only)
  * RSA (up to 4096-bit keys)
 
 Seems they want to push everyone to RSA. I wonder why? The patent issue
 is over so that can't be it.
 
 I understood that it is believed that the discrete log problem is
 possibly harder than factoring, since solving DL solves factoring but
 not the other way around. Maybe the NSA has found a workable solution
 for factoring but not for DL?

Considering that Suite B uses ECC only for asymetric crypto, I'd say you're 
probably right.

But that's just speculation, we will know in 30 - 40 years... :)

Regards.
-- 
Hubert Kario
QBS - Quality Business Software
02-656 Warszawa, ul. Ksawerów 30/85
tel. +48 (22) 646-61-51, 646-74-24
www.qbs.com.pl

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PGP interoperability

2012-05-24 Thread Robert J. Hansen
Looking over the PGP product offerings after their acquisition by
Symantec, it seems they have dropped support for 2048- and 3072-bit DSA.
 This decision makes no sense to me, and is sufficiently weird that I
wonder if the marketing copy is horribly in error.  However, the
marketing copy is clear -- across the whole of the PGP product line,
DSA2 is no longer supported.  Check the following URLs, click on System
Requirements, and take a look at the Public Key Algorithms.  For each
product they offer:

* Diffie-Hellman
* DSA (1024-bit keys only)
* RSA (up to 4096-bit keys)

http://www.symantec.com/products/sysreq.jsp?pcid=pcat_business_contpvid=desktop_email_1

http://www.symantec.com/products/sysreq.jsp?pcid=pcat_info_risk_comppvid=desktop_corporate_1

http://www.symantec.com/products/sysreq.jsp?pcid=pcat_info_risk_comppvid=desktop_pro_1


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