| crypto/x509 | Package x509 implements a subset of the X.509 standard. |
| encoding/pem | Package pem implements the PEM data encoding, which originated in Privacy Enhanced Mail. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/AdRoll/goamz/cloudfront | |
| github.com/docker/distribution/context | Package context provides several utilities for working with Go's context in http requests. |
| github.com/docker/distribution/registry/storage/driver | |
| github.com/docker/distribution/registry/storage/driver/middleware | |
| io/ioutil | Package ioutil implements some I/O utility functions. |
| time | Package time provides functionality for measuring and displaying time. |