| /* |
| * 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; |
| } |
| libc_hidden_def (cbc_crypt) |
| |
| /* |
| * 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); |
| } |
| libc_hidden_def (ecb_crypt) |