File Format Conversion

Convert File Format

Run these OpenSSL commands on your machine to easily convert certificate file from one format to the other.

PEM to other formats

PEM→→→→→DER

openssl x509 -outform der -in certificate.pem -out certificate.der

PEM→→→→→P7B

openssl crl2pkcs7 -nocrl -certfile certificate.cer -out certificate.p7b -certfile CACert.cer

PEM→→→→→PFX

openssl pkcs12 -export -out certificate.pfx -inkey privateKey.key -in certificate.crt -certfile CACert.crt

DER to other format

DER→→→→→PEM

openssl x509 -inform der -in certificate.cer -out certificate.pem

P7B to other format

P7B→→→→→PEM

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

P7B→→→→→PFX

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

openssl pkcs12 -export -in certificate.cer -inkey privateKey.key -out certificate.pfx -certfile CACert.cer

PFX to other format

PFX→→→→→PEM

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