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Bronze

des versus 3des

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

2 REPLIES

Re: des versus 3des

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

Gold

Re: des versus 3des

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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