diff options
Diffstat (limited to 'lib/librpc/secure_rpc/des/des_crypt.c')
-rw-r--r-- | lib/librpc/secure_rpc/des/des_crypt.c | 138 |
1 files changed, 138 insertions, 0 deletions
diff --git a/lib/librpc/secure_rpc/des/des_crypt.c b/lib/librpc/secure_rpc/des/des_crypt.c new file mode 100644 index 0000000..57a9e71 --- /dev/null +++ b/lib/librpc/secure_rpc/des/des_crypt.c @@ -0,0 +1,138 @@ +#ifndef lint +static char sccsid[] = "@(#)des_crypt.c 2.2 88/08/10 4.0 RPCSRC; from 1.13 88/02/08 SMI"; +#endif +/* + * 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 + */ +/* + * des_crypt.c, DES encryption library routines + * Copyright (C) 1986, Sun Microsystems, Inc. + */ + +#include <sys/types.h> +#include <des_crypt.h> +#include <sys/des.h> + +/* + * To see if chip is installed + */ +#define UNOPENED (-2) +static int g_desfd = UNOPENED; + + +/* + * 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++; \ + } \ +} + +/* + * CBC mode encryption + */ +cbc_crypt(key, buf, len, mode, ivec) + char *key; + char *buf; + unsigned len; + unsigned 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 + */ +ecb_crypt(key, buf, len, mode) + char *key; + char *buf; + unsigned len; + unsigned mode; +{ + struct desparams dp; + + dp.des_mode = ECB; + return(common_crypt(key, buf, len, mode, &dp)); +} + + + +/* + * Common code to cbc_crypt() & ecb_crypt() + */ +static +common_crypt(key, buf, len, mode, desp) + char *key; + char *buf; + register unsigned len; + unsigned mode; + register struct desparams *desp; +{ + register int desdev; + register int res; + + 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); +} |