Implementation of Data Encryption Standard (DES) V1

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Implementation of Data Encryption Standard (DES) V1

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Author: Saravanan Krishnaraj (View all listings)

Implementation of Data Encryption Standard (DES) V1
The program implements DES – Data Encryption Standard to encrypt and decrypt plain-text files by generating a 64 bit key from the user’s password and encrypts the file taking 64-bit blocks at a time and performs 16 rounds of encryption on each block. The program can also be extended to implement Triple DES.
It was developed in Visual Basic 6.0...

File name:	47585.zip
Product homepage:	Unknown
Order page:	Unknown
Languages:	Visual Basic 6
Platforms:	Windows 32bit
Release Date:	1 January, 1900
Licence Type:	Open Source
Size:	33 Kb
Price/fee (US$):	0.00 $
Number of downloads:	1040

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rating the source
by johannes tampubolon , indonesia, on Monday Aug 21, 2006

good, very-very good resource. thanks. i had used the resource to my tesis and it was succes. if you dont mind can i have more explanation about how to create a program DES in visual basic.
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Good work but minor bug?
by Dave , Earth, on Tuesday Sep 26, 2006

Thank-you for the source it was very helpful. One thing to note is that I believe there is a bug in the generate_sub_keys() routine. "input_key = c_block & d_block" needs to be added before running permuted_choice_2. (without this line the output is encrypted although it is not standard DES)
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Good work but minor bug?
by Dave , earth, on Tuesday Sep 26, 2006

Will check it out...
by Saravanan Krishnaraj, India, on Saturday Nov 25, 2006

Thnx for the detailed analysis... i will check out that error soon...
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