derdump /tmp/packed
SEQUENCE (OF): tag 0x30 #12 @0 ^0, Universal, Constructed
  INTEGER: tag 0x02 #1 @2 ^1, Universal, Primitive
     00 == 0
  [1]: tag 0xa1 #2 @5 ^1, Contextual, Constructed
    NULL: tag 0x05 #0 @7 ^2, Universal, Primitive
  [2]: tag 0xa2 #3 @9 ^1, Contextual, Constructed
    INTEGER: tag 0x02 #1 @11 ^2, Universal, Primitive
       02 == 0