| bytes | Package bytes implements functions for the manipulation of byte slices. |
| crypto/tls | Package tls partially implements TLS 1.2, as specified in RFC 5246, and TLS 1.3, as specified in RFC 8446. |
| 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/golang/glog | Package glog implements logging analogous to the Google-internal C++ INFO/ERROR/V setup. |
| 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. |
| net/url | Package url parses URLs and implements query escaping. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |