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u_scram.c
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Wrap
C/C++ Source or Header
|
2005-01-01
|
548b
|
31 lines
/* u_scram.c
*
* Copyright (c) 1996-2005 Mike Gleason, NcFTP Software.
* All rights reserved.
*
*/
#include "syshdrs.h"
#ifdef PRAGMA_HDRSTOP
# pragma hdrstop
#endif
void
Scramble(unsigned char *dst, size_t dsize, unsigned char *src, char *key)
{
int i;
unsigned int ch;
unsigned char *k2;
size_t keyLen;
keyLen = strlen(key);
k2 = (unsigned char *) key;
for (i=0; i < (int) dsize - 1; i++) {
ch = src[i];
if (ch == 0)
break;
dst[i] = (unsigned char) (ch ^ (int) (k2[i % (int) keyLen]));
}
dst[i] = '\0';
} /* Scramble */