How can one inspect the information in a X509 certificate using OpenSSL?

How can one inspect the information in a X509 certificate using OpenSSL?

• A. openssl view
• B. openssl check
• C. openssl x509
• D. openssl examine

Answer: (C)

To inspect the information in an X.509 certificate using OpenSSL, the command you would use is "openssl x509." This command is specifically designed to handle X.509 certificates, allowing users to display the details contained within them in a readable format. When you execute this command, you can include options such as "-in" to specify the input file containing the certificate, and "-text" to output the certificate's details in plain text. This will provide you with comprehensive information such as the certificate's version, serial number, issuer, subject, validity period, public key information, and any extensions that may be included. The other commands mentioned do not serve this purpose; for example, "openssl view" and "openssl examine" are not valid or recognized commands in the context of X.509 certificates, and "openssl check" is not a defined command for viewing certificates, which makes "openssl x509" the proper choice for inspecting X.509 certificates.

To inspect the information in an X.509 certificate using OpenSSL, the command you would use is "openssl x509." This command is specifically designed to handle X.509 certificates, allowing users to display the details contained within them in a readable format.

When you execute this command, you can include options such as "-in" to specify the input file containing the certificate, and "-text" to output the certificate's details in plain text. This will provide you with comprehensive information such as the certificate's version, serial number, issuer, subject, validity period, public key information, and any extensions that may be included.

The other commands mentioned do not serve this purpose; for example, "openssl view" and "openssl examine" are not valid or recognized commands in the context of X.509 certificates, and "openssl check" is not a defined command for viewing certificates, which makes "openssl x509" the proper choice for inspecting X.509 certificates.