HP 49/50 Security Programs
The first size listed is the downloaded file size and the second size listed is the size on the calculator.
There are 26 files totaling 804KB in this category.
|Blowfish Encryption 0.6 (details)
||49/50 ENG 122KB/29KB|
|Implements Blowfish cryptographic algorithm. Among the routines supplied are key initialization, the encoding of any amount of text (in a string) into a list of codes, and the decoding of such a list back into plain text. In addition, one routine is supplied that, when called, resets the subkey lists to some arbitrary initial value (the digits of Pi) so that no-one can use the subkeys to encode or decode messages in your name.|
|By Michael Kuyumcu.
|Blowfish Library 1.0 (details)
||49/50 ENG 42KB/17KB|
|This library, based on M. Kuyumcu's work, uses assembly language and System RPL to make it faster to encrypt and decrypt files on the 49G, 49g+ and 50g. You may also use Cryptocomp (library 1109) along with this library.|
|By Yoann Désir and Michael Kuyumcu.
|Codigo 1.0 (details)
||49/50 ESP 3KB/2KB|
|Protects your HP 49 with an access code of 10 keys. Written in System RPL and assembly language, so it is very fast and ML, small. Easy to use, program, and change password. I really wonder why people keep writing so many of these...|
|By Juan Velasco.
|Crypto 1.0 (details)
||49/50 48 ENG FRA 51KB/20KB|
|This 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.
||49/50 ENG 4KB/2KB|
|Data Encryption Standard library, with true DES encryption and decryption according to the FIPS PUB standard. Has cool bit manipulation instructions for permuting bits in binary numbers and supports preprocessing to speed up repeated operations.|
|By Jurjen N.E. Bos.
||49/50 ENG 6KB/4KB|
|Text manager which allows you to view, modify and erase encrypted texts that are stored in the flash ROM.|
|By Thomas Désir (TotoHP).
|RSA Cryptographic Tools 0.9 (details)
||49/50 ENG 298KB/3KB|
|This library contains 3 utilities for using public key cryptography. One utility creates a set of 2 public and 1 private key, another utility RSA-encrypts a plaintext, and the third utility decrypts RSA-codes to plaintext again.|
|By Michael Kuyumcu.
|SDP (Sistema de Protección) 2.2 (details)
||49/50 ESP 88KB/5KB|
|Protect your HP 49 with an access code. There is no way to use the calculator without the code. This program is based on Code 49 by Thomas Désir. Thanks to Thomas for allowing me to publish a modified version of your program. HP 49G/g+ compatible (ROM 2.0 in g+).|
|By Thomas Désir (TotoHP) and Nicolás F. Rivero.
|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.
Part of the HP Calculator Archive,
Copyright 1997-2017 Eric Rechlin.