Imports github.com/aws/aws-sdk-go/aws github.com/aws/aws-sdk-go/aws/credentials github.com/aws/aws-sdk-go/aws/session github.com/aws/aws-sdk-go/service/s3 github.com/skip2/go-qrcode github.com/aws/aws-sdk-go/service/s3/s3manager Standard library imports bufio crypto/sha512 encoding/hex errors flag fmt io log os path/filepath regexp runtime strings time mime