typedef struct { ... } SilcAttributeObjMime;

    Data type for MIME object as attribute.  The data in the structure
    is valid as long as the payload structure is valid.

    typedef struct SilcAttributeObjMimeStruct {
      const unsigned char *mime;    /* MIME buffer */
      SilcUInt32 mime_len;          /* length of the MIME buffer */
    } SilcAttributeObjMime;