Encrypt 24 byte array into 8 byte array in c#

cnr.chada · Apr 1, 2010, 03:13 PM

Hi,

I have an 24 byte array and would like to convert into 8 byte hash code in c# .

I would really appreciate for your help

Thanks,
chinna

Kreij · Apr 1, 2010, 03:39 PM

I believe the original DES encryption encrypts into 8 byte blocks. I've never use it though.
It's rather slow and insecure.

FordGT90Concept · Apr 1, 2010, 03:40 PM

SHA1 and MD5 are hashes. They are lossy. TripleDES and Rijndael (Rijndael is more secure) encrypt data. To make an 24 byte array only 8 bytes without losing any data, you need compression algorithms like the ZIP deflate method. How many bytes you get out of compression algorithms depends on how dense the input 24 byte arrays are.

So basically...
"encrypt" = TripleDES/Rijndael
"24 byte array ... into 8 byte array" = compression/deflate algorithms

Apr 1, 2010, 03:13 PM	#1
cnr.chada Join Date: Apr 2010 Posts: 1 (0.00/day) Thanks: 0 Thanked 0 Times in 0 Posts	Encrypt 24 byte array into 8 byte array in c# Hi, I have an 24 byte array and would like to convert into 8 byte hash code in c# . I would really appreciate for your help Thanks, chinna Last edited by cnr.chada; Apr 1, 2010 at 04:50 PM.

Apr 1, 2010, 03:39 PM	#2
Kreij Hardcore Monkey Moderator Join Date: Feb 2007 Location: Cheeseland (Wisconsin, USA) Posts: 12,114 (5.27/day) Thanks: 591 Thanked 5,492 Times in 2,936 Posts System Specs	I believe the original DES encryption encrypts into 8 byte blocks. I've never use it though. It's rather slow and insecure. __________________ Cloud (noun, singular): A dynamic arrangement of multiple potential single points of failure, with a user at one end and their data at the other. Get more tech news on a wide variety of topics at NextPowerUp

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Apr 1, 2010, 03:40 PM	#3
FordGT90Concept "I go fast!1!11!1!" Join Date: Oct 2008 Location: IA, USA Posts: 10,575 (6.28/day) Thanks: 1,755 Thanked 2,596 Times in 1,960 Posts System Specs	SHA1 and MD5 are hashes. They are lossy. TripleDES and Rijndael (Rijndael is more secure) encrypt data. To make an 24 byte array only 8 bytes without losing any data, you need compression algorithms like the ZIP deflate method. How many bytes you get out of compression algorithms depends on how dense the input 24 byte arrays are. So basically... "encrypt" = TripleDES/Rijndael "24 byte array ... into 8 byte array" = compression/deflate algorithms __________________ Golden Rule of Programming: Never assume. try { SteamDownload(); } catch (Steamception ex) { RageQuit(); }

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