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 895KB in this category.

Alarm Library 1.0   (details) 48 ENG   5KB/2KB
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   2KB/1KB
Protects the calculator with an access code.
By José M. Alarcón Aguin. 1998/05/11

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

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

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

CodeLock 1.3Get It   (details) 48 ENG   4KB/2KB
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   5KB/1KB
Another simple cryptography program.
By Simone Rapisarda. 2017/07/08

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

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

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

Crypto 1.0   (details) 49/50 48 ENG FRA   51KB/20KB
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   5KB/5KB
Several encryption programs.
Author unknown. 1998/06/08

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

Cryptor48   (details) 48 ENG   3KB/1KB
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   2KB/3KB
Cryptography program.
By AnarcHP. 1997/08/31

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

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

Encryption   (details) 48 ENG   7KB/1KB
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   292KB/2KB
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   10KB/2KB
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   7KB/2KB
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   7KB/1KB
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   3KB/1KB
Encryption program which encrypts strings. Written in System RPL.
By Thomas Gasche. 1999/01/01

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

Keeper 1.8   (details) 48 ENG   4KB/1KB
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   2KB/1KB
Small password protection program like HPLock.
By Samuel Mathieson. 1998/02/15

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

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

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

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

Pass   (details) 48 ENG   1KB/1KB
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   26KB/5KB
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   5KB/1KB
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   40KB/16KB
Generates a passphrase using MD4 or MD5.
By Steve VanDevender. 1998/11/04

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

SHA256   (details) 48 ENG   8KB/3KB
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   9KB/12KB
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   4KB/1KB
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   336KB/1KB
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   2KB/2KB
Yet another password-protection program, for the S series only.
By David Winter (HPManiac). 1998/06/09

WipeMem 1.0   (details) 48 ENG   3KB/1KB
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

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Copyright 1997-2023 Eric Rechlin.