Imports of package checksum

PathSynopsis
crypto/md5Package md5 implements the MD5 hash algorithm as defined in RFC 1321.
encoding/base64Package base64 implements base64 encoding as specified by RFC 4648.
github.com/aws/aws-sdk-go-v2/awsPackage aws provides the core SDK's utilities and shared types.
github.com/aws/aws-sdk-go-v2/aws/awserr
ioPackage io provides basic interfaces to I/O primitives.