diff --git a/gui/qt/password_dialog.py b/gui/qt/password_dialog.py index 1c2d1318d..97e24ae47 100644 --- a/gui/qt/password_dialog.py +++ b/gui/qt/password_dialog.py @@ -20,6 +20,7 @@ from PyQt4.QtGui import * from PyQt4.QtCore import * from electrum.i18n import _ from util import * +import re @@ -31,6 +32,8 @@ def make_password_dialog(self, wallet, msg, new_pass=True): self.new_pw.setEchoMode(2) self.conf_pw = QLineEdit() self.conf_pw.setEchoMode(2) + #Password Strength Label + self.pw_strength = QLabel("Password Strength: Empty ") vbox = QVBoxLayout() label = QLabel(msg) @@ -62,10 +65,16 @@ def make_password_dialog(self, wallet, msg, new_pass=True): grid.addWidget(QLabel(_('New Password') if new_pass else _('Password')), 1, 0) grid.addWidget(self.new_pw, 1, 1) + #add Password Strength Label to grid + grid.addWidget(self.pw_strength, 1, 2) + grid.addWidget(QLabel(_('Confirm Password')), 2, 0) grid.addWidget(self.conf_pw, 2, 1) vbox.addLayout(grid) + #Add an event handler to update password strength interactively + self.connect(self.new_pw, SIGNAL("textChanged(QString)"), lambda: update_password_strength(self.pw_strength,self.new_pw.text())) + vbox.addStretch(1) vbox.addLayout(ok_cancel_buttons(self)) return vbox @@ -94,6 +103,52 @@ def run_password_dialog(self, wallet, parent): return True, password, new_password +def check_password_strength(password): + + ''' + Check the strength of the password entered by the user and return back the same + :param password: password entered by user in New Password + :return: password strength Weak or Medium or Strong + ''' + + password_strength = {-1:"Empty",0:"Too short",1:"Weak",2:"Medium",3:"Medium",4:"Strong",5:"Strong"} + score = -1 + + if len(password) == 0: + return password_strength[score] + elif len(password) < 6: + score = score + 1 + return password_strength[score] + else: + score += 1 + + if re.search(r'[A-Z]', password): + score += 1 + + if re.search(r'[a-z]', password): + score += 1 + + if re.search(r'[0-9]', password): + score += 1 + + if not re.match("^[a-zA-Z0-9]*$",password): + score += 1 + + return password_strength[score] + +def update_password_strength(pw_strength_label,password): + + ''' + call the function check_password_strength and update the label pw_strength interactively as the user is typing the password + :param pw_strength_label: the label pw_strength + :param password: password entered in New Password text box + :return: None + ''' + colors = {"Empty":"Red","Too short":"Red","Weak":"Red","Medium":"Blue","Strong":"Green"} + strength = check_password_strength(password) + pw_strength_label.setText("Password Strength:" + strength + "") + + class PasswordDialog(QDialog):