PinCrypt Free1.0 - Google Play

PinCrypt is designed to store your pin codes in a safe and convenient way.

Your pin codes are encrypted and decrypted by a key derived from a cipher sentence you enter. The cipher sentence could be eg. a passage from your favourite book or poem song. The crypt-key is built before you can encrypt and save new pin codes to PinCrypt and/or when you want to decrypt the pin code you already stored in it. Save your encrypted pin with whatever name you associate with this pin code (eg. VCard, Golden, DoorZ). Your pin codes can be decrypted and viewed whenever you want.

USE

The first you will see when opening the program is information about last time the program was opened. This can indicate any unauthorized use of the program.
On the first screen, the Home screen, you see four buttons with the following icons, PLUS (Add new data); EYE (View stored data); PENCIL (Edit previously stored data) and QUESTION MARK (Main help information). By tapping a button you navigate to the selected function screen. In the top right corner, you see corresponding buttons that can be used in the same way as main buttons. These buttons are also used to facilitate the navigation by showing a YELLOW BAR under the icon related to the presently active screen/function.
Please observe that the HELP button in the top right corner also can be used to get more specific help in different screens/functions.
In the PinCrypt icon is also the HOME button. Tapping this will get you back to the start screen again. A long press on this you get information ABOUT PinCrypt.

How secure is PinCrypt?

PinCrypt is not storing any information about credit card numbers or something that relates to you pin code. It is only your name tag that is stored together with it. The pin codes are encrypted with a symmetric substitution crypt where the crypt-key is derived from the cipher sentence you have entered. A sentence that is built from series of commonly used words which is the guarantee that your crypt-key will not come up as a input suggestion, eg. when using input methods like Swype on your Android device.
For your security neither the crypt-key and/or your cipher sentence will be stored in in your phone. This means that the only one who knows the correct key to decrypt your stored pin codes is YOU. The program can NOT tell if an entered cipher sentence is right or wrong. Consequently, if somebody would enter a faulty cipher sentence, the decrypted result will also be wrong.