| bytes | Package bytes implements functions for the manipulation of byte slices. |
| context | Package context defines the Context type, which carries deadlines, cancellation signals, and other request-scoped values across API boundaries and between processes. |
| crypto/rand | Package rand implements a cryptographically secure random number generator. |
| cuelabs.dev/go/oci/ociregistry | Package ociregistry provides an abstraction that represents the capabilities provided by an OCI registry. |
| cuelabs.dev/go/oci/ociregistry/ociref | Package ociref supports parsing cross-registry OCI registry references. |
| encoding/json | Package json implements encoding and decoding of JSON as defined in RFC 7159. |
| fmt | Package fmt implements formatted I/O with functions analogous to C's printf and scanf. |
| github.com/opencontainers/go-digest | |
| github.com/opencontainers/image-spec/specs-go/v1 | |
| io | Package io provides basic interfaces to I/O primitives. |
| slices | Package slices defines various functions useful with slices of any type. |
| strings | Package strings implements simple functions to manipulate UTF-8 encoded strings. |
| sync | Package sync provides basic synchronization primitives such as mutual exclusion locks. |