Generating a random string from user phone number

Question

I am building one application,in which I want to send unique code or referral code to each user.So I want to generate random strings from user mobile number.Each and every random string should be unique for each mobile number.How should I do that ? Is there any library for javascript or any good links for that ?

You can just MD5 encode the phone numbers. See: http://stackoverflow.com/questions/415953/how-can-i-generate-an-md5-hash — Bob Brinks, Jun 21 '16 at 10:02
you can write your own logic for that, there is no specific answer for your question. — Pranav Totla, Jun 21 '16 at 10:03
So to make it clear: You want to create a unique string from a phone number that 1) is unique amongst all of those strings and 2) will be the same if recreated for the same phone number? — devnull69, Jun 21 '16 at 10:03
MD5 is not unique, it is just relatively unlikely that you create double MD5 hashes for two different phone numbers. But maybe that's already enough for the use case — devnull69, Jun 21 '16 at 10:05
I think MD5 is not the correct solution .... I want more robust way to perform this — Udit Kumawat, Jun 21 '16 at 10:08
is there any popular hash method in javascript to generate random string from your input string ? — Udit Kumawat, Jun 21 '16 at 10:12

score 0 · Answer 1 · answered Jun 21 '16 at 11:04

In Node Js there are lots of packages available. You can also just use raw code like.

    String.prototype.hashCode = function() {
    var hash = 0, i, chr, len;
    if (this.length === 0) return hash;
    for (i = 0, len = this.length; i < len; i++) {
    chr   = this.charCodeAt(i);
      hash  = ((hash << 5) - hash) + chr;
      hash |= 0; // Convert to 32bit integer
      }
      return hash;
      };

This rudimentary hashing function will output a hash.

Generating a random string from user phone number

1 Answers1