OpenSSL Convert .p7b to .pem to .crt

Convert .p7b with DER encording to .pem with PEM (PKCS7) encoding

1. Conversion from .p7b with DER encoding to PEM encoding
2. Verify the encoding, the following is viewable in the file -----BEGIN PKCS7----- to -----END PKCS7-----
   1. # openssl pkcs7 -inform der -in <certificate>.p7b -outform pem -out <certificate>.pem

Convert .pem with PEM encoding 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