diff options
Diffstat (limited to 'sunrpc/des_crypt.c')
| -rw-r--r-- | sunrpc/des_crypt.c | 120 |
1 files changed, 120 insertions, 0 deletions
diff --git a/sunrpc/des_crypt.c b/sunrpc/des_crypt.c new file mode 100644 index 0000000000..7a4bc5d6cf --- /dev/null +++ b/sunrpc/des_crypt.c @@ -0,0 +1,120 @@ +/* + * 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); +} |