Imports of package sha256

PathSynopsis
crypto/sha256Package sha256 implements the SHA224 and SHA256 hash algorithms as defined in FIPS 180-4.
encoding/binaryPackage binary implements simple translation between numbers and byte sequences and encoding and decoding of varints.
hashPackage hash provides interfaces for hash functions.
runtimePackage runtime contains operations that interact with Go's runtime system, such as functions to control goroutines.