Interface IEnvelopedData

Encrypted content information

Optionally provides information about the originator. It is present only if required by the key management algorithm. It may contain certificates and CRLs.

Collection of per-recipient information. There MUST be at least one element in the collection.

Collection of attributes that are not encrypted

Version number.

The appropriate value depends on originatorInfo, RecipientInfo, and unprotectedAttrs.

The version MUST be assigned as follows:

IF (originatorInfo is present) AND
   ((any certificates with a type of other are present) OR
   (any crls with a type of other are present))
THEN version is 4
ELSE
   IF ((originatorInfo is present) AND
      (any version 2 attribute certificates are present)) OR
      (any RecipientInfo structures include pwri) OR
      (any RecipientInfo structures include ori)
   THEN version is 3
   ELSE
      IF (originatorInfo is absent) AND
         (unprotectedAttrs is absent) AND
         (all RecipientInfo structures are version 0)
      THEN version is 0
      ELSE version is 2