Digitally Signed Records -- Friend or Foe?

Long-term preservation of digitally signed records may be a challenging task. Digital signatures expire and digital certificates may be revoked, thus influencing the trustworthiness of archived digital records. The authors firstly explain the problems and then proceed to a description of the planned research. The research will be conducted on a sample of digitally signed and archived electronic forms stored in the PDF file format, originating from the period from 2006 to 2009. [ABSTRACT FROM AUTHOR]