CMSEncoderCopyEncapsulatedContentType(_:_:)

Declaration

func CMSEncoderCopyEncapsulatedContentType(_ cmsEncoder: CMSEncoder, _ eContentTypeOut: UnsafeMutablePointer<CFData?>) -> OSStatus

Parameters

• cmsEncoder:

  The CMSEncoder reference returned by the CMSEncoderCreate function.

• eContentTypeOut:

  On return, points to the object identifier for the encapsulated data in the signed message.

Return Value

A result code. See Security Framework Result Codes.

Discussion

In a signed message, the signed data consists of any type of data (the encapsulated content) plus the signature values. This function returns the object identifier (OID) of the encapsulated content as it was specified with the CMSEncoderSetEncapsulatedContentType function.

If the CMSEncoderSetEncapsulatedContentType function has not been called for this message, this function returns a NULL pointer.