Pin Codes: How to Easily Remember and Store Them Safely

Master Password: ?At least 6 characters, better more than 10. Don't write it or show to anybody. It is TOP SECRET! Keep it in your memory only! Real Pin: ?Enter the pin that you want to protect. For example, credit card pin, metal safe or door lock code, etc. At least 4 digits. Protected Pin: Pin copied to clipboard OK! Clipboard cleared OK!

With this utility, you can safely store your pins like this:

Or, like this:

• it is totally free-of-charge;
• it is based on open source verified cryptographic systems such as SHA1;
• it does NOT send ANY data or PINs to our server; *
• it can be used in the off-line mode;
• it does NOT save ANY data into your computer files, including cookies etc.;
• it is fully open-source and based on Javascript: anybody can check the code.

• Generate SHA1 hash of your Master Password as A;
• Remove all ZEROs from A;
• Use first THREE DIGITS FROM A as B;
• Use the fourth SINGLE DIGIT FROM A as C;
• Use your REAL PIN to be protected as X;
• Get PROTECTED PIN = X*B+C;

• Generate SHA1 hash of your Master Password as A;
• Remove all ZEROs from A;
• Use first THREE DIGITS FROM A as B;
• Use the fourth SINGLE DIGIT FROM A as C;
• Use your PROTECTED PIN as Y;
• Get REAL PIN = (Y-C)/B;