/* * Sun RPC is a product of Sun Microsystems, Inc. and is provided for * unrestricted use provided that this legend is included on all tape * media and as a part of the software program in whole or part. Users * may copy or modify Sun RPC without charge, but are not authorized * to license or distribute it to anyone else except as part of a product or * program developed by the user. * * SUN RPC IS PROVIDED AS IS WITH NO WARRANTIES OF ANY KIND INCLUDING THE * WARRANTIES OF DESIGN, MERCHANTIBILITY AND FITNESS FOR A PARTICULAR * PURPOSE, OR ARISING FROM A COURSE OF DEALING, USAGE OR TRADE PRACTICE. * * Sun RPC is provided with no support and without any obligation on the * part of Sun Microsystems, Inc. to assist in its use, correction, * modification or enhancement. * * SUN MICROSYSTEMS, INC. SHALL HAVE NO LIABILITY WITH RESPECT TO THE * INFRINGEMENT OF COPYRIGHTS, TRADE SECRETS OR ANY PATENTS BY SUN RPC * OR ANY PART THEREOF. * * In no event will Sun Microsystems, Inc. be liable for any lost revenue * or profits or other special, indirect and consequential damages, even if * Sun has been advised of the possibility of such damages. * * Sun Microsystems, Inc. * 2550 Garcia Avenue * Mountain View, California 94043 */ #if !defined(lint) && defined(SCCSID) static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI"; #endif /* * des_crypt.c, DES encryption library routines * Copyright (C) 1986, Sun Microsystems, Inc. */ #include <sys/types.h> #include <rpc/des_crypt.h> #include "des.h" extern int _des_crypt (char *, unsigned, struct desparams *); /* * Copy 8 bytes */ #define COPY8(src, dst) { \ register char *a = (char *) dst; \ register char *b = (char *) src; \ *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \ *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \ } /* * Copy multiple of 8 bytes */ #define DESCOPY(src, dst, len) { \ register char *a = (char *) dst; \ register char *b = (char *) src; \ register int i; \ for (i = (int) len; i > 0; i -= 8) { \ *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \ *a++ = *b++; *a++ = *b++; *a++ = *b++; *a++ = *b++; \ } \ } /* * Common code to cbc_crypt() & ecb_crypt() */ static int common_crypt (char *key, char *buf, register unsigned len, unsigned mode, register struct desparams *desp) { register int desdev; if ((len % 8) != 0 || len > DES_MAXDATA) return DESERR_BADPARAM; desp->des_dir = ((mode & DES_DIRMASK) == DES_ENCRYPT) ? ENCRYPT : DECRYPT; desdev = mode & DES_DEVMASK; COPY8 (key, desp->des_key); /* * software */ if (!_des_crypt (buf, len, desp)) return DESERR_HWERROR; return desdev == DES_SW ? DESERR_NONE : DESERR_NOHWDEVICE; } /* * CBC mode encryption */ int cbc_crypt (char *key, char *buf, unsigned int len, unsigned int mode, char *ivec) { int err; struct desparams dp; dp.des_mode = CBC; COPY8 (ivec, dp.des_ivec); err = common_crypt (key, buf, len, mode, &dp); COPY8 (dp.des_ivec, ivec); return err; } /* * ECB mode encryption */ int ecb_crypt (char *key, char *buf, unsigned int len, unsigned int mode) { struct desparams dp; dp.des_mode = ECB; return common_crypt (key, buf, len, mode, &dp); }