Convertire un certificato in altro formati

Conversione di x509 in PEM
openssl x509 -in certificatename.cer -outform PEM -out certificatename.pem

Conversione di PEM in DER
openssl x509 -outform der -in certificatename.pem -out certificatename.der

Conversione di DER in PEM
openssl x509 -inform der -in certificatename.der -out certificatename.pem

Conversione di PEM in P7B
openssl crl2pkcs7 -nocrl -certfile certificatename.pem -out certificatename.p7b -certfile CACert.cer

Conversione di PKCS7 in PEM
openssl pkcs7 -print_certs -in certificatename.p7b -out certificatename.pem

Conversione di PFX in PEM
openssl pkcs12 -in certificatename.pfx -out certificatename.pem

Conversione di PFX in PKCS#8
Richiede 2 comandi
openssl pkcs12 -in certificatename.pfx -nocerts -nodes -out certificatename.pem
openSSL pkcs8 -in certificatename.pem -topk8 -nocrypt -out certificatename.pk8

Conversione di P7B in PFX
Richiede 2 comandi
openssl pkcs7 -print_certs -in certificatename.p7b -out certificatename.cer
openssl pkcs12 -export -in certificatename.cer -inkey privateKey.key -out certificatename.pfx -certfile cacert.cer