golang 中的md5 、hmac、sha1算法的简单实现

package main
 
import (
    "crypto/hmac"
    "crypto/md5"
    "crypto/sha1"
    "encoding/hex"
    "fmt"
)
 
func Md5(data string) string {
    md5 := md5.New()
    md5.Write([]byte(data))
    md5Data := md5.Sum([]byte(""))
    return hex.EncodeToString(md5Data)
}
 
func Hmac(key, data string) string {
    hmac := hmac.New(md5.New, []byte(key))
    hmac.Write([]byte(data))
    return hex.EncodeToString(hmac.Sum([]byte("")))
}
 
func Sha1(data string) string {
    sha1 := sha1.New()
    sha1.Write([]byte(data))
    return hex.EncodeToString(sha1.Sum([]byte("")))
}
 
func main() {
    fmt.Println(Md5("hello"))
    fmt.Println(Hmac("key2", "hello"))
    fmt.Println(Sha1("hello"))
}

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