Go语言常见哈希函数的使用
发布时间:2020-12-16 19:32:28 所属栏目:大数据 来源:网络整理
导读:myhash.go /** * Created with IntelliJ IDEA. * User: liaojie * Date: 12-9-8 * Time: 下午3:53 * To change this template use File | Settings | File Templates. */package mainimport ( "crypto/md5" "crypto/sha1" "crypto/sha256" "crypto/sha512" "
myhash.go /** * Created with IntelliJ IDEA. * User: liaojie * Date: 12-9-8 * Time: 下午3:53 * To change this template use File | Settings | File Templates. */ package main import ( "crypto/md5" "crypto/sha1" "crypto/sha256" "crypto/sha512" "flag" //命令行选项解析器 "fmt" "hash" "io" "os" ) var style = flag.String("s","sha256","采用的哈西函数:sha1,sha256") var filename = flag.String("f","","需要计算散列值的文件名") func main() { flag.Parse() var hs hash.Hash switch *style { case "md5": hs = md5.New() case "sha1": hs = sha1.New() case "sha512": hs = sha512.New() default: hs = sha256.New() } if len(*filename) == 0 { filein,err := os.Open(flag.Args()[len(flag.Args())-1]) if err != nil { return } else { io.Copy(hs,filein) } } else { filein,err := os.Open(*filename) if err != nil { return } else { io.Copy(hs,filein) } } hashString := hs.Sum(nil) fmt.Printf("%xn",hashString) } 以上所述就是本文的全部内容了,希望大家能够喜欢。 (编辑:李大同) 【声明】本站内容均来自网络,其相关言论仅代表作者个人观点,不代表本站立场。若无意侵犯到您的权利,请及时与联系站长删除相关内容! |