| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| encoding/pem | Package pem implements the PEM data encoding, which originated in Privacy Enhanced Mail. |
| errors | Package errors implements functions to manipulate errors. |
| 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 | Package ct holds core types and utilities for Certificate Transparency. |
| github.com/google/certificate-transparency-go/client | Package client is a CT log client implementation and contains types and code for interacting with RFC6962-compliant CT Log instances. |
| github.com/google/certificate-transparency-go/internal/witness/client/http | Package http is a simple client for interacting with witnesses over HTTP. |
| github.com/google/certificate-transparency-go/jsonclient | Package jsonclient provides a simple client for fetching and parsing JSON CT structures from a log. |
| github.com/google/certificate-transparency-go/loglist2 | |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| net/http | Package http provides HTTP client and server implementations. |
| net/url | Package url parses URLs and implements query escaping. |
| os | Package os provides a platform-independent interface to operating system functionality. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |
| time | Package time provides functionality for measuring and displaying time. |