DES CBC change looks dubious to me.

     according to Mark Crispin <MRC@Panda.COM>.

     [Bodo Moeller]

#if 0

  *) DES CBC did not update the IV. Weird.

     [Ben Laurie]

#else

     Look at des.c, cbc3_enc.c etc.: Those rely on that bevaviour of

     des_cbc_encrypt and copy IVs themselves when they have to.

     Either all those have to be changed too, or things must stay as they

     are.

#endif

  *) When bntest is run from "make test" it drives bc to check its

     calculations, as well as internally checking them. If an internal check

#include "des_locl.h"

/* Note that this is inconsistent with other DES functions in that it doesn't

   update ivec */

void des_cbc_encrypt(const unsigned char *in, unsigned char *out, long length,

	     des_key_schedule schedule, des_cblock *ivec, int enc)

	{

			tout0=tin[0]; l2c(tout0,out);

			tout1=tin[1]; l2c(tout1,out);

			}

#if 0

		iv = &(*ivec)[0];

		l2c(tout0,iv);

		l2c(tout1,iv);

#endif

		}

	else

		{

		/*	xor0=tin0;

			xor1=tin1; */

			}

#if 0

		iv = &(*ivec)[0];

		l2c(xor0,iv);

		l2c(xor1,iv);

#endif

		}

	tin0=tin1=tout0=tout1=xor0=xor1=0;

	tin[0]=tin[1]=0;