thilaks83
Joined: 17 Sep 2005
Posts: 19
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 17 Sep 2005 11:26 newdes encryption - yes there is newdes |
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i cant find the source to study the newdes algorithm...i'l have to do the encryption using visual c++...i cant even find the source code for this algorithm to make a reference.....thank u.....
it was created in 1984 by Robert Scott...
newdes unlike des has no bit-level permutations,making it easy to implement in software....all operations are performed on whole bytes. It is a product cipher,consisting of 17 rounds performed on a 64 bit data block and make use of a 120 bit key.in each round,subkey material is XORed with the 1 byte sub-blocks of data,then fed through a round function,the result of which is then XORed with another sub block of data.in total, 8 XORs are performed in each round.the round function is derived from the United States Declaration of Idependence.
each set of two rounds uses seven 1-byte subkeys, which are derived by splitting 56 bits of the key into bytes.the key is then rotated 56 bits for use in the next two rounds......
this is wat i found in the net...not much to understand....if there was a block diagram about it then it would be better....
pls help me out ....
thank u....
Last edited by thilaks83 on 17 Sep 2005 16:03; edited 1 time in total |
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