des算法+代码



// des.cpp - modified by Wei Dai from:



/*

* This is a major rewrite of my old public domain DES code written

* circa 1987, which in turn borrowed heavily from Jim Gillogly s 1977

* public domain code. I pretty much kept my key scheduling code, but

* the actual encrypt/decrypt routines are taken from from Richard

* Outerbridge s DES code as printed in Schneier s "Applied Cryptography."

*

* This code is in the public domain. I would appreciate bug reports and

* enhancements.

*

* Phil Karn KA9Q, karn@unix.ka9q.ampr.org, August 1994.

*/-// des.cpp- modified by Wei Dai from:



/*

* This is a major rewrite of my old public domain DES code written

* circa 1987, which in turn borrowed heavily from Jim Gillogly s 1977

* public domain code. I pretty much kept my key scheduling code, but

* the actual encrypt/decrypt routines are taken from from Richard

* Outerbridge s DES code as printed in Schneier s "Applied Cryptography."

*

* This code is in the public domain. I would appreciate bug reports and

* enhancements.

*

* Phil Karn KA9Q, karn@unix.ka9q.ampr.org, August 1994.

*/