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-rw-r--r--sunrpc/des_crypt.c120
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diff --git a/sunrpc/des_crypt.c b/sunrpc/des_crypt.c
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+/*
+ * 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);
+}