Conversion X.509 Certificate represented as a HEX string into PEM encoded X.509 certificate

Question

Is it possible to convert X.509 Certificate represented as a HEX string to the PEM encoded X.509 certificate? (.CER format)

Answer 1

You can try this (I suppose it is DER encoded) cat cert.txt | xxd -r -p | openssl x509 -inform DER -out mycert.pem -outform PEM

it converts it to binary and then pipes it to openssl to convert it to pem