| flag | Package flag implements command-line flag parsing. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/google/certificate-transparency-go/x509 | Package x509 parses X.509-encoded keys and certificates. |
| github.com/google/certificate-transparency-go/x509util | Package x509util includes utility code for working with X.509 certificates from the x509 package. |
| io | Package io provides basic interfaces to I/O primitives. |
| k8s.io/klog/v2 | Package klog contains the following functionality: |
| net/http | Package http provides HTTP client and server implementations. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| time | Package time provides functionality for measuring and displaying time. |