How to check whether a given password is strong, medium, or weak in Go

1 Answer

0 votes
// You can set your own rules

package main

import (
	"fmt"
	"unicode"
)

func checkPasswordStrength(password string) string {
	length := len(password)

	hasLower, hasUpper, hasDigit, specialChar := false, false, false, false

	lowuppdig := "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ1234567890"

	for _, char := range password {
		if unicode.IsLower(char) {
			hasLower = true
		}
		if unicode.IsUpper(char) {
			hasUpper = true
		}
		if unicode.IsDigit(char) {
			hasDigit = true
		}
		if !contains(lowuppdig, char) {
			specialChar = true
		}
	}

	if hasLower && hasUpper && hasDigit && specialChar && length >= 10 {
		return "Strong"
	} else if (hasLower || hasUpper) && specialChar && length >= 8 {
		return "Medium"
	}

	return "Weak"
}

func contains(s string, char rune) bool {
	for _, c := range s {
		if c == char {
			return true
		}
	}
	return false
}

func main() {
	passwords := []string{"aq1o@p9$XM", "asW!W)(o", "WSDFK!#Q", "n*djskq*", "WE3q#$"}
	
	for _, password := range passwords {
		fmt.Println(checkPasswordStrength(password))
	}
}


/*
run:

Strong
Medium
Medium
Medium
Weak

*/

 



answered Oct 23, 2024 by avibootz
edited Oct 23, 2024 by avibootz
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