Encrypt password in AngularJS before saving to database

Question

I am using AngularJS in my web application. I have to take the password from the user interface and save it in an encrypted format to the database.

I need to return it and decrypt it. My thought is to read the text string in the js file and then encrypt it in the service before saving to the database.

Any suggestions?

Answer 1

As Dmitry Bychenko said, create a factory service for password hashing. Then save and compare the hash.

angular.module("myApp").factory("sha1", function () {
function sha1(msg)
{
  function rotl(n,s) { return n<<s|n>>>32-s; };
  function tohex(i) { for(var h="", s=28;;s-=4) { h+=(i>>>s&0xf).toString(16); if(!s) return h; } };
  var H0=0x67452301, H1=0xEFCDAB89, H2=0x98BADCFE, H3=0x10325476, H4=0xC3D2E1F0, M=0x0ffffffff; 
  var i, t, W=new Array(80), ml=msg.length, wa=new Array();
  msg += fcc(0x80);
  while(msg.length%4) msg+=fcc(0);
  for(i=0;i<msg.length;i+=4) wa.push(msg.cca(i)<<24|msg.cca(i+1)<<16|msg.cca(i+2)<<8|msg.cca(i+3));
  while(wa.length%16!=14) wa.push(0);
  wa.push(ml>>>29),wa.push((ml<<3)&M);
  for( var bo=0;bo<wa.length;bo+=16 ) {
    for(i=0;i<16;i++) W[i]=wa[bo+i];
    for(i=16;i<=79;i++) W[i]=rotl(W[i-3]^W[i-8]^W[i-14]^W[i-16],1);
    var A=H0, B=H1, C=H2, D=H3, E=H4;
    for(i=0 ;i<=19;i++) t=(rotl(A,5)+(B&C|~B&D)+E+W[i]+0x5A827999)&M, E=D, D=C, C=rotl(B,30), B=A, A=t;
    for(i=20;i<=39;i++) t=(rotl(A,5)+(B^C^D)+E+W[i]+0x6ED9EBA1)&M, E=D, D=C, C=rotl(B,30), B=A, A=t;
    for(i=40;i<=59;i++) t=(rotl(A,5)+(B&C|B&D|C&D)+E+W[i]+0x8F1BBCDC)&M, E=D, D=C, C=rotl(B,30), B=A, A=t;
    for(i=60;i<=79;i++) t=(rotl(A,5)+(B^C^D)+E+W[i]+0xCA62C1D6)&M, E=D, D=C, C=rotl(B,30), B=A, A=t;
    H0=H0+A&M;H1=H1+B&M;H2=H2+C&M;H3=H3+D&M;H4=H4+E&M;
  }
  return tohex(H0)+tohex(H1)+tohex(H2)+tohex(H3)+tohex(H4);
};
return sha1;
});

Credit this answer for the SHA1 function.