03-17-2006 07:59 AM - edited 03-09-2019 02:18 PM
hi
i would like to have an explanation about des and 3des, so my question
is does des use 56 bit form encryption or 64 bit ? i saw somewhere that the 8 bit in difference are used for parity is that true?.
my second question what is the lenght in bit of the block' s message on it des and 3des act to provide encryption?
thanks in advance
any suggestion ,advice ,would be great
03-17-2006 10:28 AM
Hello,
You got it you are only using 56 bits for actual encryption. Triple des is just takeing the packet you encrypted and running the encryption algorithem twice more.
I really couldn't say much about your second question.
Patrick
03-17-2006 12:41 PM
Yes des is using 56 bit key
3 des doesnt mean 3x encrypttion but
3des uses 3 different keys following:
by 1st key message is encrypted than this encrypted message is decrypted with second key and finally encrypted again with 3rd key - its much more secure than simply 3x encrypted message
HTH
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