A Forensic Analysis of a Self-Signed Digital Certificate

Prof Bill Buchanan OBE FRSE
5 min readDec 17, 2023

A digital certificate is defined in the form of X.509, and normally contains a trusted public key. For this, we sign the certificate with the private key of a trusted entity. But we can also create a self signed certificate, and where we sign with our own private key. The two main formats for a digital certificate are with PEM or DER (a binary form). In this case, we will create an RSA key…

--

--

Prof Bill Buchanan OBE FRSE

Professor of Cryptography. Serial innovator. Believer in fairness, justice & freedom. Based in Edinburgh. Old World Breaker. New World Creator. Building trust.