| crypto/internal/fips140/hmac | Package hmac implements HMAC according to [FIPS 198-1]. |
| crypto/internal/fips140/sha256 | Package sha256 implements the SHA-224 and SHA-256 hash algorithms as defined in FIPS 180-4. |
| crypto/internal/fips140deps/byteorder | |
| crypto/internal/fips140deps/godebug | |
| io | Package io provides basic interfaces to I/O primitives. |
| runtime | Package runtime contains operations that interact with Go's runtime system, such as functions to control goroutines. |
| unsafe | Package unsafe contains operations that step around the type safety of Go programs. |