| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/google/certificate-transparency-go/loglist3 | Package loglist3 allows parsing and searching of the master CT Log list. |
| github.com/google/certificate-transparency-go/x509 | Package x509 parses X.509-encoded keys and certificates. |
| math/rand | Package rand implements pseudo-random number generators suitable for tasks such as simulation, but it should not be used for security-sensitive work. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |