| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| crypto/sha256 | Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4. |
| encoding/base32 | Package base32 implements base32 encoding as specified by RFC 4648. |
| encoding/base64 | Package base64 implements base64 encoding as specified by RFC 4648. |
| errors | Package errors implements functions to manipulate errors. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/google/certificate-transparency-go | Package ct holds core types and utilities for Certificate Transparency. |
| 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/tls | Package tls implements functionality for dealing with TLS-encoded data, as defined in RFC 5246. |
| net | Package net provides a portable interface for network I/O, including TCP/IP, UDP, domain name resolution, and Unix domain sockets. |
| regexp | Package regexp implements regular expression search. |
| strconv | Package strconv implements conversions to and from string representations of basic data types. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |