47 lines
1.0 KiB
C
47 lines
1.0 KiB
C
/* rand_key.c */
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/* Copyright (C) 1993 Eric Young - see README for more details */
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/*-
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* $Id: rand_key.c,v 1.1.1.1 1994/09/30 14:49:51 csgr Exp $
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*/
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#include "des_locl.h"
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int des_random_key(ret)
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des_cblock ret;
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{
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des_key_schedule ks;
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static unsigned long c=0;
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static unsigned short pid=0;
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static des_cblock data={0x01,0x23,0x45,0x67,0x89,0xab,0xcd,0xef};
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des_cblock key;
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unsigned char *p;
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unsigned long t;
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#ifdef MSDOS
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pid=1;
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#else
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if (!pid) pid=getpid();
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#endif
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p=key;
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t=(unsigned long)time(NULL);
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l2c(t,p);
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t=(unsigned long)((pid)|((c++)<<16));
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l2c(t,p);
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des_set_odd_parity((des_cblock *)data);
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des_set__key((des_cblock *)data,ks);
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des_cbc_cksum((des_cblock *)key,(des_cblock *)key,
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(long)sizeof(key),ks,(des_cblock *)data);
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des_set_odd_parity((des_cblock *)key);
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des_cbc_cksum((des_cblock *)key,(des_cblock *)key,
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(long)sizeof(key),ks,(des_cblock *)data);
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des_set_odd_parity((des_cblock *)key);
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bcopy(key,ret,sizeof(key));
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bzero(key,sizeof(key));
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bzero(ks,sizeof(ks));
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t=0;
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return(0);
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}
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