Conversion of Format in Digital Certificates

By Darío Rivera

Posted On in OpenSSL

Each format in openssl for certificates is intended for a different purpose. With openssl, you can perform the conversion from one format to another for each of these purposes. Below you will see which commands are useful for converting digital certificates based on the x509 standard.

.PEM to .DER

openssl x509 -inform PEM -outform DER -in certificate.pem -out certificate.der

.PEM to .PB7

openssl crl2pkcs7 -nocrl -certfile certificate.pem -out certificate.p7b

.PEM to .PFX

openssl pkcs12 -export -inkey private.key -in certificate.pem -out certificate.pfx

.DER to .PEM

openssl x509 -inform DER -outform PEM -in certificate.der -out  certificate.pem

.P7B to .PEM

openssl pkcs7 -print_certs -in certificate.p7b -out certificate.pem

.PFX to .PEM

openssl pkcs12 -in certificate.pfx -out certificate.pem -nodes