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-rw-r--r--sunrpc/xcrypt.c180
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diff --git a/sunrpc/xcrypt.c b/sunrpc/xcrypt.c
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+++ b/sunrpc/xcrypt.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
+ */
+
+/*
+ * 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;
+}