hpcalc.org - HP 48 Archive

HP 48 Security Programs

The first size listed is the downloaded file size and the second size listed is the size on the calculator.

There are 42 files totaling 895 KB in this category.

Alarm Library 1.0   (details) 48 ENG   5 KB / 2 KB
ScreenshotProtects your calculator while you are absent by pulsing the IR LED and checking the keyboard for unauthorized use.
By Alexander Graf. 2017-08-04

Clave   (details) 48 ESP   2 KB / 1 KB
Protects the calculator with an access code.
By José M. Alarcón Aguin. 1998-05-11

Clave   (details) 48 ESP   4 KB / 1 KB
ScreenshotProtects your HP with a password.
By Julian Salvador Arnal. 2001-02-14

Code+ 3.0   (details) 48 ENG   2 KB / 2 KB
Protection code library to password protect your calculator.
By S. Lajevardi (HPeed). 2017-07-16

CodeLock 1.00   (details) 48 ENG   4 KB / 2 KB
Lock your HP 48 with a five-key password.
By Scott Thompson. 2008-08-14

CodeLock 1.3Get It   (details) 48 ENG   4 KB / 2 KB
ScreenshotThis library for preventing unauthorized entry into your 48G series calculator is based on the CODELOCK Library written by Scotty Thompson for the 48S series. The library will also set the flags to the user's preferences upon a system restart.
By Todd Eckrich. 1997-08-21

Coder 1.4   (details) 48 ENG   5 KB / 1 KB
Another simple cryptography program.
By Simone Rapisarda. 2017-07-08

Codes   (details) 48 ENG   2 KB / 2 KB
Another protection program.
By Francois Dang Ngoc (MaskDog). 1998-06-07

Cripter 1.0   (details) 48 ENG   2 KB / 2 KB
ScreenshotPassword-protects individual variables, encrypting their contents until the access code is entered.
By CocoHP. 2017-07-22

Cryptage   (details) 48 ENG   1 KB / 1 KB
Cryptography library.
By Tristan Derbanne. 1998-12-20

Crypto 1.0   (details) 49/50 48 ENG FRA   51 KB / 20 KB
ScreenshotThis software is designed to encrypt and decrypt a text file with a 128-bit secret code. Written in assembly language and User RPL for the 48S/G and 49G/G+.
By Rémi Janelle. 2004-05-09

Cryptoge   (details) 48 FRA   5 KB / 5 KB
Several encryption programs.
Author unknown. 1998-06-08

Cryptor 2.1   (details) 48 ENG   1 KB / 1 KB
Password protects any object.
By Alexandre Coulom (CoolHP). 1998-06-11

Cryptor48   (details) 48 ENG   3 KB / 1 KB
Password protects any object. Very fast, written entirely in system RPL and assembly language.
By Pierre-Yvan Beaurang (HpRip). 2000-08-06

Cycle-Crypt   (details) 48 ENG   2 KB / 3 KB
Cryptography program.
By AnarcHP. 1997-08-31

DigiPass 1.1   (details) 48 ENG   9 KB / 12 KB
Another password-protection program. With digital sound.
By David Winter (HPManiac). 1997-08-31

Encoder/Decoder 1.1   (details) 48 ENG   3 KB / 1 KB
Very simple cryptography program.
By Ty. 1998-01-29

Encryption   (details) 48 ENG   7 KB / 1 KB
Encryption program; XOR stream cipher with 32-bit random IV, 12-digit numeric key.
By John H Meyers. 1998-07-02

Enigma 1.0   (details) 48 ENG   292 KB / 2 KB
ScreenshotA faithful emulation of the German Enigma cipher machine. Does both three- and four-rotor variants. Written in System RPL.
By Kiyoshi Akima. 2006-05-14

Gateway 2.8   (details) 48 ENG   10 KB / 2 KB
Startup password protection program with 4-digit password. For the S series prior to revision J. Beta version 2.8; also includes the stable version of 2.7.1.
By Erik Bryntse and Simone Rapisarda. 2008-08-16

HP Lock 3.1   (details) 48 ENG   7 KB / 2 KB
Locks your HP 48 with password to prevent unauthorized access. While HP 48 is locked, it handles activated alarms, ON+XX key combinations, reset through a hole under the rubber foot and even 'Recover Memory?' + [YES] situations (if you manage to cause one) - as long as your calculator is locked and HPLOCK is in its memory, the calculator will remain locked. It also enables you to encrypt and store away HOME with sub directories before lending your HP 48, and has a user customizable display for password entry.
By Ludvik Krulik. 1997-08-21

HP Password   (details) 48 ENG   7 KB / 1 KB
Another password protection program. The only way to bypass this is a memory clear.
By Joel Gregorie. 1999-05-31

HP-Encrypt   (details) 48 ENG   3 KB / 1 KB
Encryption program which encrypts strings. Written in System RPL.
By Thomas Gasche. 1999-01-01

hpCRYPTER 1.0   (details) 48 ENG   4 KB / 2 KB
Password-protection program.
By Antoine Ossadzow (P0UP0V/A0HP). 1997-08-21

Keeper 1.8   (details) 48 ENG   4 KB / 1 KB
Allows you to protect the contents of a RAM card, so that if someone else puts the card into their calculator they would not be able to use the contents.
By Simone Rapisarda. 2017-07-08

Lock   (details) 48 ENG   2 KB / 1 KB
Small password protection program like HPLock.
By Samuel Mathieson. 1998-02-15

LockHP 2.0   (details) 48 ENG   2 KB / 3 KB
Locks the HP 48 with a user-set password.
By Chad Rivoli. 1998-11-07

Login 2.3   (details) 48 ENG   2 KB / 1 KB
Yet another password protection library.
By Alexandre Coulom (CoolHP). 1998-06-11

MD5 EncryptionGet It   (details) 48 ENG   5 KB / 5 KB
MD5 Encryption program. Fast: in System RPL and assembly language.
By Steve VanDevender. 2000-03-03

OffCode   (details) 48 ENG   3 KB / 2 KB
Requires a preset password to be entered for the calculator to warmstart.
Author unknown. 1998-10-25

Pass   (details) 48 ENG   1 KB / 1 KB
ScreenshotYet another password protection library, requiring the password to entered before the calculator can be turned on or warmstarted.
Author unknown. 2017-06-29

PassSave   (details) 48 ENG   26 KB / 5 KB
Keeps track of all your passwords in an encrypted database. Requires Steve VanDevender's MD5 Encryption library. Includes source code.
By Norbert Göb. 2000-03-18

Protect   (details) 48 ENG   5 KB / 1 KB
ScreenshotAnother "lock" program to password-protect the HP 48. Incompatible with Java. Becomes library 1616.
By Paquot Christophe. 1997-08-21

S/KEY   (details) 48 ENG   40 KB / 16 KB
Generates a passphrase using MD4 or MD5.
By Steve VanDevender. 1998-11-04

Security   (details) 48 ENG   1 KB / 1 KB
Simple program to make it difficult for uninformed people to use your HP.
By Christopher Degen. 1998-05-20

SENU - Simple ENcoding Utility 0.1   (details) 49/50 48 ENG   7 KB / 1 KB
Simple ENcoding Utility allows one to (de)cipher strings.
By Przemyslaw Holubowski. 2017-02-09

SHA256   (details) 48 ENG   8 KB / 3 KB
ScreenshotSHA256 hash code implementation in User RPL for HP48G with documentation and listing. Calculation of SHA256 for short string takes on real device about 80 sec.
By Jürgen Holetzeck. 2023-05-07

Sound Lock 1.2   (details) 48 ENG   9 KB / 12 KB
ScreenshotThis is a protection program for the 48G(X), with digital sound! Similar to DigiPass by HPManiac (uses his sound clips), but this one is stable and can't be broken even with the reset hole. A library with option for changing passwords.
By Silvo Srpcic (HPWebster). 2004-09-14

Tiny Encryption Algorithm 1.0   (details) 49/50 48 ENG   4 KB / 1 KB
Implementation of TEA and TDA for encryption and decryption, respectively. You may only encrypt strings and they should be of length = 0 (mod 8). If the string isn't, it will be expanded with null characters. The key has to be exactly 16 characters (128 bits). It will not be expanded if there are missing characters (just add spaces).
By Daniel Lidström. 2017-04-19

TooManySecrets   (details) 48 ENG   336 KB / 1 KB
Allows you to encrypt and decrypt any string using a numeric password.
By Giuseppe Belfiore. 2009-04-25

Watch-Dog 1.0   (details) 48 ENG   2 KB / 2 KB
Yet another password-protection program, for the S series only.
By David Winter (HPManiac). 1998-06-09

WipeMem 1.0   (details) 48 ENG   3 KB / 1 KB
Security enhancement program. Wipes off any sensitive information from calculator memory which may be left there by some security application (MD5LIB for example).
By Robert Tiismus. 2000-12-07

Part of the HP Calculator Archive,
Copyright 1997-2024 Eric Rechlin.