Re: Correct definition of ContentInfo in CMS-10

[Russ Housley <[e-mail]>]

Agree.  The OID in ContentInfo should not be OPTIONAL.


At 09:42 AM 2/22/99 -0500, Bonatti, Chris wrote:
>    I would submit that the 'content' field in the General Syntax section is
>correct.  The instance of OPTIONAL in the appendix must be a copy artifact
>from the 'EncapsulatedContentInfo', in which the 'content' field is
>correctly optional.  I can see no legitimate use of CMS in which you would
>send only a 'contentType' OID.  Even if someone were sending a "detached
>content" in a separate body part, either MIME or X.400 mail systems are
>perfectly capable of attaching a content types for that information without
>utilizing this structure.
>
>Russ,
>
>    Browsing through my historical archive of now "non-existent" I-Ds, I see
>that the OPTIONAL tag seems to have fallen out of the General Syntax
>starting in version 3 of CMS.  Do you remember the reasoning behind the
>change?
>
>Chris
>
>
>
> ---------------------------------------------------------------
> |  International Electronic Communication Analysts, Inc.      |
> |  Christopher D. Bonatti             15309 Turkey Foot Road  |
> |  Principal Engineer              Darnestown, Md 20878-3640  |
> |  [e-mail]   Tel: [phone]   Fax: [phone]  |
> ---------------------------------------------------------------
>
>
>
>____________________
>
>William Ottaway wrote:
>
>> Within the body of CMS 10 ContentInfo is defined as : -
>>
>> ContentInfo ::= SEQUENCE {
>>         contentType ContentType,
>>         content [0] EXPLICIT ANY DEFINED BY contentType }
>>
>> However, in the appendix ContentInfo is defined as : -
>>
>> ContentInfo ::= SEQUENCE {
>>      contentType ContentType,
>>      content [0] EXPLICIT ANY DEFINED BY contentType OPTIONAL }
>>
>> I assume the one within the body (i.e. content not optional) is correct.
>>
>> Bill.
>>
>> "The Information contained in this E-Mail and any subsequent
>> correspondence is private and is intended solely for the intended
>> recipient(s).  For those other than the intended recipient any
>> disclosure, copying, distribution, or any action taken or omitted to
>> be taken in reliance on such information is prohibited and may be
>> unlawful."
>> ____________________________________________________
>> William Ottaway BSc Hons CEng MBCS,
>> L323,                        Tel: [phone]
>> DERA Malvern,                Fax: [phone]
>> St. Andrews Road,            email: [e-mail]
>> Malvern,
>> Worcs,
>> WR14 3PS
>>
>> All opinions are my own.
>
>
>