To use OpenSSL to get the certficate information (source):

Signing Requestopenssl req -in cert.req -text
Signed Certificateopenssl x509 -in cert.crt -text
Encrypted Private Keyopenssl rsa -in www.closetheloan.pem -text
Unencrypted Private Keyopenssl rsa -in www.closetheloan.key -text