Re: Correct definition of ContentInfo in CMS-10

[[e-mail] (Peter Gutmann)]

>>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.
 
>I assume that content is not optional
 
The content is optional.  Think about how detached sigs work.
 
Peter.