Arthur S. Alexion on Mon, 3 Dec 2001 21:57:14 -0500


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Re: [PLUG] What's smime.p7s? (Was: Ginger)


Is there a way to eliminate them from the list? They are clogging my download directory. Frankly, I don't care if the mail I get from this list is authenticated, and its certainly not secret.

Art

At 02:21 PM 12/3/2001 -0500, you wrote:

> [-- Attachment #2: smime.p7s --]
> [-- Type: application/x-pkcs7-signature, Encoding: base64, Size: 4.2K --]
>
> Just curious -- what are these files you're attaching to your posts?
> Is pkcs some sort of encryption system?  4.2K seems like an awfully
> large signature.  It's an order of magnitude larger than gpg's sigs.

S/MIME is an SSL-based MIME extension, developed by (I think) RSA Data
Security.  It attempts to do the same sort of stuff as PGP - allowing for
encrypting/decrypting and signing of emails.  pkcs #7 is the data format.

Outlook comes with support for it built-in, and PHP has some new S/MIME
functions built-in if compiled with openssl support.

I think there is more info at openssl.org


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