package operator import ( "encoding/hex" "strings" ) const sha256prefix = "sha256:" func stringLikeSHA256Digest(some string) bool { if strings.HasPrefix(some, sha256prefix) { some = strings.TrimPrefix(some, sha256prefix) } _, err := hex.DecodeString(some) if err != nil { return false } if len(some) == 64 { return true } return false }