Functions

• Dependencies

  <script src="js/localforage.min.js"></script>
  <script src="js/jsencrypt.js"></script>
  <script src="js/jsrsasign-all-min.js"></script>
  

• Encrypt Methods

  • Encrypt data

    def encrypt_msg(pubkey, msg){
      //This method encrypt msg
      var encrypt = new JSEncrypt();
      encrypt.setPublicKey(pubkey);
      var encrypted = encrypt.encrypt(msg);
      return encrypted;
    }
    

  • Decrypt data

    def decrypt_msg(privkey, msg){
      //This method decrypt msg
      var encrypt = new JSEncrypt();
      decrypt.setPrivateKey(privkey);
      var uncrypted = decrypt.decrypt(msg);
      return decrypted;
    }
    

  • Sign Message

    function sign(msg, priv_key, hash_alg){
      //Create a signature of payload
      var rsa = new RSAKey();
      rsa.readPrivateKeyFromPEMString(priv_key);
      var sign_msg = rsa.sign(msg, hash_alg);
      return sign_msg;
    }
    

• Vefify Methods

  • Verify if field private key is empty

    function validate_privkey(privkey){
      // Verify if the field privkey is empty
      if(privkey.length===0){
        return false
      }else{
        return true
      }
    }
    

  • Verify if field public key is empty

    function validate_pubkey(pubkey){
      // Verify if the field pubkey is empty
      if(pubkey.length===0){
        return false
      }else{
        return true
      }
    }
    

• Get keys from localforage methods

  • Get private key from localforage

    function set_privkey(){
      //Get private key from localforage
      localforage.getItem('privatekey').then(function(value) {
        var priv_key = value;
        return priv_key
      }).catch(function(err) {
        //This code runs if there were any errors
        console.log(err);
      });
    }       
    

  • Get public key from localforage

     function set_pubkey(){
      //Get public key from localforage
      localforage.getItem('publickey').then(function(value) {
        var pub_key = value;
        return priv_key
      }).catch(function(err) {
        //This code runs if there were any errors
        console.log(err);
      });
    }
    

• Save keys in localforage

  • function save_key(private_key, public_key){
      //Save keys in localforage with name privatekey and publickey by default
      localforage.setItem('privatekey', private_key).then(function(value){
        // set privatekey
        localforage.setItem('publickey', public_key).then(function(value){
          console.log("Success Generated Keys!");
        });
      }).catch(function(e){
        console.log(e);
      });
    }