Dada una contraseña ingresada por el usuario, verifique su seguridad y sugiera alguna contraseña si no es segura.
Los criterios para una contraseña segura son los siguientes:
Una contraseña es segura si tiene:
1. Al menos 8 caracteres
2. Al menos un carácter especial
3. Al menos un número
4. Al menos un carácter en mayúsculas y minúsculas.
Ejemplos:
Input : keshav123 Output : Suggested Password k(eshav12G3 keshav1@A23 kesh!Aav123 ke(shav12V3 keGshav1$23 kesXhav@123 keAshav12$3 kesKhav@123 kes$hav12N3 $kesRhav123 Input :rakesh@1995kumar Output : Your Password is Strong
Enfoque:
verifique la seguridad de la contraseña de entrada si cumple con todos los criterios, luego es una contraseña segura; de lo contrario, verifique los caracteres ausentes y devuelva la contraseña generada aleatoriamente al usuario.
C++
// CPP code to suggest strong password
#include <bits/stdc++.h>
using namespace std;
// adding more characters to suggest strong password
string add_more_char(string str, int need)
{
int pos = 0;
// all 26 letters
string low_case = "abcdefghijklmnopqrstuvwxyz";
for (int i = 0; i < need; i++) {
pos = rand() % str.length();
str.insert(pos, 1, low_case[rand() % 26]);
}
return str;
}
// make powerful string
string suggester(int l, int u, int d, int s, string str)
{
// all digits
string num = "0123456789";
// all lower case, uppercase and special characters
string low_case = "abcdefghijklmnopqrstuvwxyz";
string up_case = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string spl_char = "@#$_()!";
// position at which place a character
int pos = 0;
// if there is no lowercase char in input string, add it
if (l == 0) {
// generate random integer under string length
pos = rand() % str.length();
// generate random integer under 26 for indexing of a to z
str.insert(pos, 1, low_case[rand() % 26]);
}
// if there is no upper case char in input string, add it
if (u == 0) {
pos = rand() % str.length();
str.insert(pos, 1, up_case[rand() % 26]);
}
// if there is no digit in input string, add it
if (d == 0) {
pos = rand() % str.length();
str.insert(pos, 1, num[rand() % 10]);
}
// if there is no special character in input string, add it
if (s == 0) {
pos = rand() % str.length();
str.insert(pos, 1, spl_char[rand() % 7]);
}
return str;
}
/* make_password function :This function is used to check
strongness and if input string is not strong, it will suggest*/
void generate_password(int n, string p)
{
// flag for lower case, upper case, special
// characters and need of more characters
int l = 0, u = 0, d = 0, s = 0, need = 0;
// password suggestions.
string suggest;
for (int i = 0; i < n; i++) {
// password suggestions.
if (p[i] >= 97 && p[i] <= 122)
l = 1;
else if (p[i] >= 65 && p[i] <= 90)
u = 1;
else if (p[i] >= 48 && p[i] <= 57)
d = 1;
else
s = 1;
}
// Check if input string is strong that
// means all flag are active.
if ((l + u + d + s) == 4) {
cout << "Your Password is Strong" << endl;
return;
}
else
cout << "Suggested password " << endl;
/*suggest 10 strong strings */
for (int i = 0; i < 10; i++) {
suggest = suggester(l, u, d, s, p);
need = 8 - suggest.length();
if (need > 0)
suggest = add_more_char(suggest, need);
cout << suggest << endl;
}
}
// Driver code
int main()
{
string input_string = "geek@2018";
srand(time(NULL));
// srand function set Seed for rand().
generate_password(input_string.length(), input_string);
return 0;
}
Java
// Java code to suggest strong password
import java.io.*;
import java.util.*;
import java.util.Random;
public class GFG {
// adding more characters to suggest
// strong password
static StringBuilder add_more_char(
StringBuilder str, int need)
{
int pos = 0;
Random randm = new Random();
// all 26 letters
String low_case = "abcdefghijklmnopqrstuvwxyz";
for (int i = 0; i < need; i++) {
pos = randm.nextInt(1000) % str.length();
str.setCharAt(pos,low_case.charAt(
randm.nextInt(1000) % 26));
}
return str;
}
// make powerful String
static StringBuilder suggester(int l, int u, int d,
int s, StringBuilder str)
{
Random randm = new Random();
// all digits
String num = "0123456789";
// all lower case, uppercase and special
// characters
String low_case = "abcdefghijklmnopqrstuvwxyz";
String up_case = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
String spl_char = "@#$_()!";
// position at which place a character
int pos = 0;
// if there is no lowercase char in input
// String, add it
if (l == 0) {
// generate random integer under
// String length()
pos = randm.nextInt(1000) % str.length();
// generate random integer under 26 for
// indexing of a to z
str.setCharAt(pos,low_case.charAt(randm.nextInt(1000)
% 26));
}
// if there is no upper case char in input
// String, add it
if (u == 0) {
pos = randm.nextInt(1000) % str.length();
str.setCharAt(pos,low_case.charAt(randm.nextInt(1000)
% 26));
}
// if there is no digit in input String, add it
if (d == 0) {
pos = randm.nextInt(1000) % str.length();
str.setCharAt(pos,low_case.charAt(randm.nextInt(1000)
% 10));
}
// if there is no special character in input
// String, add it
if (s == 0) {
pos = randm.nextInt(1000) % str.length();
str.setCharAt(pos,low_case.charAt(randm.nextInt(1000)
% 7));
}
return str;
}
/* make_password function :This function is used
to check strongness and if input String is not
strong, it will suggest*/
static void generate_password(int n, StringBuilder p)
{
// flag for lower case, upper case, special
// characters and need of more characters
int l = 0, u = 0, d = 0, s = 0, need = 0;
// password suggestions.
StringBuilder suggest;
for (int i = 0; i < n; i++) {
// password suggestions.
if (p.charAt(i) >= 97 && p.charAt(i) <= 122)
l = 1;
else if (p.charAt(i) >= 65 && p.charAt(i) <= 90)
u = 1;
else if (p.charAt(i) >= 48 && p.charAt(i) <= 57)
d = 1;
else
s = 1;
}
// Check if input String is strong that
// means all flag are active.
if ((l + u + d + s) == 4) {
System.out.println("Your Password is Strong");
return;
}
else
System.out.println("Suggested password ");
/*suggest 10 strong Strings */
for (int i = 0; i < 10; i++) {
suggest = suggester(l, u, d, s, p);
need = 8 - suggest.length();
if (need > 0)
suggest = add_more_char(suggest, need);
System.out.println(suggest);;
}
}
// Driver code
public static void main(String[] args)
{
StringBuilder input_String = new StringBuilder("geek@2018");
generate_password(input_String.length(), input_String);
}
}
// This code is contributed by Manish Shaw (manishshaw1)
Python3
# Python code to suggest strong password
import random
# Function to insert character in a string
# Because string is immutable in python
def insert(s, pos, ch):
return(s[:pos] + ch + s[pos:])
# adding more characters to
# suggest strong password
def add_more_char(s, need):
pos = 0
# add 26 letters
low_case = "abcdefghijklmnopqrstuvwxyz"
for i in range(need):
pos = random.randint(0, len(s)-1)
s = insert(s, pos, low_case[random.randint(0,25)])
return(s)
# Make powerful string
def suggester(l, u, d, s, st):
# all digits
num = '0123456789'
# all lower case, upper case and special characters
low_case = "abcdefghijklmnopqrstuvwxyz"
up_case = low_case.upper()
spl_char = '@#$_()!'
# Position at which place a character
pos = 0
# If there is no lowercase char
# in input string, add it
if( l == 0 ):
# Generate random integer under string length
pos = random.randint(0,len(st)-1)
# Generate random integer under 26 for indexing of a to z
st = insert(st, pos, low_case[random.randint(0,25)])
# If there is no upper case char in input string, add it
if( u == 0 ):
# Generate random integer under string length
pos = random.randint(0,len(st)-1)
# Generate random integer under 26 for indexing of A to Z
st = insert(st, pos, up_case[random.randint(0,25)])
# If there is no digit in input string, add it
if( d == 0 ):
# Generate random integer under string length
pos = random.randint(0,len(st)-1)
# Generate random integer under 10 for indexing of 0 to 9
st = insert(st, pos, num[random.randint(0,9)])
# If there is no special character
# in input string, add it
if( s == 0 ):
# Generate random integer under string length
pos = random.randint(0,len(st)-1)
# Generate random integer under 7 for
# indexing of special characters
st = insert(st, pos, low_case[random.randint(0,6)])
return st
# generate_password function : This function is used to check
# strength and if input string is not strong, It will suggest
def generate_password(n, p):
# flag for lower case, upper case, special
# characters and need of more characters
l = 0; u = 0; d = 0; s = 0; need = 0
# Password suggestions
suggest = ''
for i in range(n):
# Password suggestion
if( p[i].islower() ):
l = 1
elif( p[i].isupper() ):
u = 1
elif( p[i].isdigit() ):
d = 1
else:
s = 1
# Check if input string is strong that
# means all flags are active
if( (l + u + d + s) == 4):
print("Your Password is Strong")
return
else:
print("Suggested Passwords")
# Suggest 10 strong strings
for i in range(10):
suggest = suggester(l, u, d, s, p)
need = 8 - len(suggest)
if(need > 0):
suggest = add_more_char(suggest, need)
print(suggest)
# Driver Code
input_string = 'geek@2018'
generate_password( len(input_string), input_string)
# This code is contributed by Arjun Saini
C#
// C# code to suggest strong password
using System;
using System.Collections.Generic;
class GFG {
// adding more characters to suggest
// strong password
static string add_more_char(string str, int need)
{
int pos = 0;
Random randm = new Random();
// all 26 letters
string low_case = "abcdefghijklmnopqrstuvwxyz";
for (int i = 0; i < need; i++) {
pos = randm.Next(1,1000) % str.Length;
str = str.Insert(pos,low_case[randm.Next(1000)
% 26].ToString());
}
return str;
}
// make powerful string
static string suggester(int l, int u, int d, int s,
string str)
{
Random randm = new Random();
// all digits
string num = "0123456789";
// all lower case, uppercase and special
// characters
string low_case = "abcdefghijklmnopqrstuvwxyz";
string up_case = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
string spl_char = "@#$_()!";
// position at which place a character
int pos = 0;
// if there is no lowercase char in input
// string, add it
if (l == 0) {
// generate random integer under
// string length
pos = randm.Next(1,1000) % str.Length;
// generate random integer under 26 for
// indexing of a to z
str = str.Insert(pos,low_case[randm.Next(1,
1000) % 26].ToString());
}
// if there is no upper case char in input
// string, add it
if (u == 0) {
pos = randm.Next(1,1000) % str.Length;
str = str.Insert(pos,up_case[randm.Next(
1,1000) % 26].ToString());
}
// if there is no digit in input string, add it
if (d == 0) {
pos = randm.Next(1,1000) % str.Length;
str = str.Insert(pos,num[randm.Next(1,1000)
% 10].ToString());
}
// if there is no special character in input
// string, add it
if (s == 0) {
pos = randm.Next(1,1000) % str.Length;
str = str.Insert(pos,spl_char[randm.Next(
1,1000) % 7].ToString());
}
return str;
}
/* make_password function :This function is used
to check strongness and if input string is not
strong, it will suggest*/
static void generate_password(int n, string p)
{
// flag for lower case, upper case, special
// characters and need of more characters
int l = 0, u = 0, d = 0, s = 0, need = 0;
// password suggestions.
string suggest;
for (int i = 0; i < n; i++) {
// password suggestions.
if (p[i] >= 97 && p[i] <= 122)
l = 1;
else if (p[i] >= 65 && p[i] <= 90)
u = 1;
else if (p[i] >= 48 && p[i] <= 57)
d = 1;
else
s = 1;
}
// Check if input string is strong that
// means all flag are active.
if ((l + u + d + s) == 4) {
Console.WriteLine("Your Password is Strong\n");
return;
}
else
Console.WriteLine("Suggested password\n ");
/*suggest 10 strong strings */
for (int i = 0; i < 10; i++) {
suggest = suggester(l, u, d, s, p);
need = 8 - suggest.Length;
if (need > 0)
suggest = add_more_char(suggest, need);
Console.WriteLine(suggest + "\n");;
}
}
// Driver code
public static void Main()
{
string input_string = "geek@2018";
generate_password(input_string.Length, input_string);
}
}
// This code is contributed by Manish Shaw (manishshaw1)
PHP
<?php
// php code to suggest
// strong password
// adding more characters to
// suggest strong password
function add_more_char( $str, $need)
{
$pos = 0;
// all 26 letters
$low_case = "abcdefghijklmnopqrstuvwxyz";
for ($i = 0; $i < $need; $i++)
{
$pos = rand() % strlen($str);
$str[$pos]=$low_case[rand() % 26];
}
return $str;
}
// make powerful string
function suggester($l, $u, $d, $s, $str)
{
// all digits
$num = "0123456789";
// all lower case, uppercase and
// special characters
$low_case = "abcdefghijklmnopqrstuvwxyz";
$up_case = "ABCDEFGHIJKLMNOPQRSTUVWXYZ";
// $spl_char1 = "@#$_()!";
// position at which place
// a character
$pos = 0;
// if there is no lowercase char
// in input string, add it
if ($l == 0)
{
// generate random integer
// under string length
$pos = rand() % strlen($str);
// generate random integer under
// 26 for indexing of a to z
$str[$pos]=$low_case[rand() % 26];
}
// if there is no upper case
// char in input string, add it
if ($u == 0)
{
$pos = rand() % strlen($str);
$str[$pos]=$up_case[rand() % 26];
}
// if there is no digit
// in input string, add it
if ($d == 0) {
$pos = rand() % strlen($str);
$str[$pos]=$num[rand() % 10];
}
// if there is no special character
// in input string, add it
if ($s == 0)
{
$pos = rand() % strlen($str);
$str[$pos]=$spl_char1[rand() % 7];
}
return $str;
}
// Make_password function : This
// function is used to check
// strongness and if input string
// is not strong, it will suggest
function generate_password($n, $p)
{
// flag for lower case, upper case,
// special characters and need
// of more characters
$l = 0;
$u = 0;
$d = 0;
$s = 0;
$need = 0;
// password suggestions.
$suggest;
for ($i = 0; $i < $n; $i++)
{
// password suggestions.
if ($p[$i] >= 97 && $p[$i] <= 122)
$l = 1;
else if ($p[$i] >= 65 && $p[$i] <= 90)
$u = 1;
else if ($p[$i] >= 48 && $p[$i] <= 57)
$d = 1;
else
$s = 1;
}
// Check if input string is strong
// that means all flag are active.
if (($l + $u + $d + $s) == 4)
{
echo "Your Password is Strong.\n";
return;
}
else
echo "Suggested password";
// suggest 10 strong strings
for ($i = 0; $i < 10; $i++)
{
$suggest = suggester($l, $u, $d, $s, $p);
$need = 8 - strlen($suggest);
if ($need > 0)
$suggest = add_more_char($suggest, $need);
echo "\n".$suggest;
}
}
// Driver code
$input_string = "geek@2018";
srand(mktime(NULL));
// srand function set Seed for rand().
generate_password(strlen($input_string),
$input_string);
// This code is contributed by mits
?>
Producción:
Suggested password geek@201K8 geek@201S8 gOeek@2018 geek@201N8 geek@2P018 geek@D2018 geUek@2018 geek@2Q018 geek@2F018 geekZ@2018
Complejidad temporal : O(n).
Publicación traducida automáticamente
Artículo escrito por Rahul Kumar 12 y traducido por Barcelona Geeks. The original can be accessed here. Licence: CCBY-SA