Freescale Semiconductor

Triple DES Example Application for 5685x

Overview

The following demo illustrates encryption and decryption modes of the Triple DES algorithm.The demo is

based on File I/O. The file plaintxt.in is used to store plaintext for 3DES. After encryption, the message is

stored in encr_txt.out; after decryption, the message is stored in decr_txt.out. The contents of decr_txt.out

must be identical to plaintxt.in. The contents of the input file, the plaintext, could be text, numbers and/or

special characters.

How to get this software

This example application is included as part of the CodeWarrior Development Studio for 56800/E Digital

Signal Controllers. Follow these steps:

1.

Install CodeWarrior Development Studio for 56800/E Digital Signal Controllers

2.

Launch CodeWarrior, and create new Processor Expert project

a.

Select File > New menu

b.

Select Processor Expert Examples Stationery

c.

Type project name

d.

Click OK

e.

Select DemoApplications > Security > 3DES > 56858

f.

Click OK

3.

Generate application code by selecting Processor Expert > Generate Code menu

Detailed documentation

Documentation for this application is included as part of this example project. Expand Doc folder located

in the project window by clicking on the + icon next to the folder, and open desired file by double clicking it.

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