OpenSSL Convert .p7b to .pem to .crt

Convert .p7b with DER encording to .pem with PEM encoding

1. Conversion from .p7b with DER encoding to PEM encoding
   1. # openssl pkcs7 -inform der -in <certificate>.p7b -outform pem -out <certificate>.pem

Convert .pem to .crt

1. Conversion from .pem with no encoding to .crt.
   1. # openssl pkcs7 -print_certs -in <certificate>.pem -out <certificate>.crt

Further Reading

1. OpenSSL: unable to load PKCS7 object
2. SSL Converter