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Re: ASN.1 Usage In S/MIME

2002-09-30 06:52:06

Please take a look at RFCs 3369, 3370, 2632, 2633, and 2634. You will see that ASN.1 is used for certificates and PKCS#7 (which we call CMS).

Signatures generally cover the MEME-encoded content as well as signed attributes. Each of the these attributes is specified in ASN.1.


At 05:45 PM 9/28/2002 -0500, Phil Smiley wrote:
My company is evaluating a number of options for deployment of AS2 in our product. In one of our evaluation meetings, it was said that care must be taken when choosing the correct S/MIME toolkit because of the dependence that S/MIME has on ASN.1 and the complications that introduces.

I can accept that certificates and related cryptographic materials are DER or BER encoded but I would expect that to be done by a cryptographic toolkit from RSA, Baltimore Technologies, Certicom, etc. I would not expect this to be value added by an S/MIME toolkit.

Beyond the PKCS standards, where does S/MIME utilize ASN.1?

Specific to AS2, are there other parts of that spec that call for ASN.1?

Thank you;  Phil Smiley

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