On Thu, Feb 21, 2013, Dave Thompson wrote:

> > From: owner-openssl-us...@openssl.org On Behalf Of Dr. Stephen Henson
> > Sent: Wednesday, 20 February, 2013 19:06
>  
> > 
> > PKCS#7 and CMS are two similar standards but with a few 
> > subtle differences.
> 
> Beg to differ. The *first version* of CMS was almost the same 
> as PKCS#7. But after that no further work was done on PKCS#7 
> while numerous new features and extensions were added to CMS, 
> so today CMS is maybe twice as big as fossilized PKCS#7.
> 

Yes sorry should've been clearer. What I meant was that (with the exception of
a few very rarely used weird cases) PKCS#7 signatures are compatible with CMS.

The reverse is not true: CMS offers many new features that are not in PKCS#7.

Steve.
--
Dr Stephen N. Henson. OpenSSL project core developer.
Commercial tech support now available see: http://www.openssl.org
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