about summary refs log tree commit diff
path: root/sunrpc/xcrypt.c
diff options
context:
space:
mode:
Diffstat (limited to 'sunrpc/xcrypt.c')
-rw-r--r--sunrpc/xcrypt.c180
1 files changed, 180 insertions, 0 deletions
diff --git a/sunrpc/xcrypt.c b/sunrpc/xcrypt.c
new file mode 100644
index 0000000000..97c30d149f
--- /dev/null
+++ b/sunrpc/xcrypt.c
@@ -0,0 +1,180 @@
+/*
+ * 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
+ */
+
+/*
+ * Copyright (c) 1986-1991 by Sun Microsystems Inc.
+ */
+
+#ident	"@(#)xcrypt.c	1.11	94/08/23 SMI"
+
+#if !defined(lint) && defined(SCCSIDS)
+static char sccsid[] = "@(#)xcrypt.c 1.3 89/03/24 Copyr 1986 Sun Micro";
+#endif
+
+/*
+ * xcrypt.c: Hex encryption/decryption and utility routines
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <sys/types.h>
+#include <rpc/des_crypt.h>
+
+static char hex[16] =
+{
+  '0', '1', '2', '3', '4', '5', '6', '7',
+  '8', '9', 'a', 'b', 'c', 'd', 'e', 'f',
+};
+
+static char hexval (char);
+static void hex2bin (int, char *, char *);
+static void bin2hex (int, unsigned char *, char *);
+void passwd2des (char *pw, char *key);
+
+/*
+ * Encrypt a secret key given passwd
+ * The secret key is passed and returned in hex notation.
+ * Its length must be a multiple of 16 hex digits (64 bits).
+ */
+int
+xencrypt (char *secret, char *passwd)
+{
+  char key[8];
+  char ivec[8];
+  char *buf;
+  int err;
+  int len;
+
+  len = strlen (secret) / 2;
+  buf = malloc ((unsigned) len);
+  hex2bin (len, secret, buf);
+  passwd2des (passwd, key);
+  memset (ivec, 0, 8);
+
+  err = cbc_crypt (key, buf, len, DES_ENCRYPT | DES_HW, ivec);
+  if (DES_FAILED (err))
+    {
+      free (buf);
+      return 0;
+    }
+  bin2hex (len, (unsigned char *) buf, secret);
+  free (buf);
+  return 1;
+}
+
+/*
+ * Decrypt secret key using passwd
+ * The secret key is passed and returned in hex notation.
+ * Once again, the length is a multiple of 16 hex digits
+ */
+int
+xdecrypt (char *secret, char *passwd)
+{
+  char key[8];
+  char ivec[8];
+  char *buf;
+  int err;
+  int len;
+
+  len = strlen (secret) / 2;
+  buf = malloc ((unsigned) len);
+
+  hex2bin (len, secret, buf);
+  passwd2des (passwd, key);
+  memset (ivec, 0, 8);
+
+  err = cbc_crypt (key, buf, len, DES_DECRYPT | DES_HW, ivec);
+  if (DES_FAILED (err))
+    {
+      free (buf);
+      return 0;
+    }
+  bin2hex (len, (unsigned char *) buf, secret);
+  free (buf);
+  return 1;
+}
+
+/*
+ * Turn password into DES key
+ */
+void
+passwd2des (char *pw, char *key)
+{
+  int i;
+
+  memset (key, 0, 8);
+  for (i = 0; *pw; i = (i + 1) % 8)
+    key[i] ^= *pw++ << 1;
+
+  des_setparity (key);
+}
+
+/*
+ * Hex to binary conversion
+ */
+static void
+hex2bin (int len, char *hexnum, char *binnum)
+{
+  int i;
+
+  for (i = 0; i < len; i++)
+    *binnum++ = 16 * hexval (hexnum[2 * i]) + hexval (hexnum[2 * i + 1]);
+}
+
+/*
+ * Binary to hex conversion
+ */
+static void
+bin2hex (int len, unsigned char *binnum, char *hexnum)
+{
+  int i;
+  unsigned val;
+
+  for (i = 0; i < len; i++)
+    {
+      val = binnum[i];
+      hexnum[i * 2] = hex[val >> 4];
+      hexnum[i * 2 + 1] = hex[val & 0xf];
+    }
+  hexnum[len * 2] = 0;
+}
+
+static char
+hexval (char c)
+{
+  if (c >= '0' && c <= '9')
+    return (c - '0');
+  else if (c >= 'a' && c <= 'z')
+    return (c - 'a' + 10);
+  else if (c >= 'A' && c <= 'Z')
+    return (c - 'A' + 10);
+  else
+    return -1;
+}