The use of <net/ppp_defs.h> isn't guranteed to exist on Linux (e.g. uclibc, buildroot...

[ppp.git] / pppd / pppcrypt.c

diff --git a/pppd/pppcrypt.c b/pppd/pppcrypt.c
index 1c4ce3b3fc6122c01f07455bd6c8fafa89affc8b..a954d62516b94569490814227307e2564c8b2cd1 100644 (file)
--- a/pppd/pppcrypt.c
+++ b/pppd/pppcrypt.c
@@ -3,33 +3,44 @@
  *
  * Extracted from chap_ms.c by James Carlson.
  *
- * Copyright (c) 1995 Eric Rosenquist, Strata Software Limited.
- * http://www.strataware.com/
+ * Copyright (c) 1995 Eric Rosenquist.  All rights reserved.
  *
- * All rights reserved.
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
  *
- * Redistribution and use in source and binary forms are permitted
- * provided that the above copyright notice and this paragraph are
- * duplicated in all such forms and that any documentation,
- * advertising materials, and other materials related to such
- * distribution and use acknowledge that the software was developed
- * by Eric Rosenquist.  The name of the author may not be used to
- * endorse or promote products derived from this software without
- * specific prior written permission.
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
  *
- * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR
- * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED
- * WARRANTIES OF MERCHANTIBILITY AND FITNESS FOR A PARTICULAR PURPOSE.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in
+ *    the documentation and/or other materials provided with the
+ *    distribution.
+ *
+ * 3. The name(s) of the authors of this software must not be used to
+ *    endorse or promote products derived from this software without
+ *    prior written permission.
+ *
+ * THE AUTHORS OF THIS SOFTWARE DISCLAIM ALL WARRANTIES WITH REGARD TO
+ * THIS SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
+ * AND FITNESS, IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY
+ * SPECIAL, INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN
+ * AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING
+ * OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
  */
 
+#ifdef HAVE_CONFIG_H
+#include "config.h"
+#endif
+
 #include <errno.h>
+
 #include "pppd.h"
 #include "pppcrypt.h"
 
 static u_char
-Get7Bits(input, startBit)
-u_char *input;
-int startBit;
+Get7Bits(u_char *input, int startBit)
 {
        unsigned int word;
 
@@ -42,10 +53,10 @@ int startBit;
 }
 
 static void
-MakeKey(key, des_key)
-u_char *key;           /* IN  56 bit DES key missing parity bits */
-u_char *des_key;       /* OUT 64 bit DES key with parity bits added */
+MakeKey(u_char *key, u_char *des_key)
 {
+       /* key     IN  56 bit DES key missing parity bits */
+       /* des_key OUT 64 bit DES key with parity bits added */
        des_key[0] = Get7Bits(key,  0);
        des_key[1] = Get7Bits(key,  7);
        des_key[2] = Get7Bits(key, 14);
@@ -56,7 +67,7 @@ u_char *des_key;      /* OUT 64 bit DES key with parity bits added */
        des_key[7] = Get7Bits(key, 49);
 
 #ifndef USE_CRYPT
-       des_set_odd_parity((des_cblock *)des_key);
+       DES_set_odd_parity((DES_cblock *)des_key);
 #endif
 }
 
@@ -67,9 +78,7 @@ u_char *des_key;      /* OUT 64 bit DES key with parity bits added */
  * Note that the low-order "bit" is always ignored by by setkey()
  */
 static void
-Expand(in, out)
-u_char *in;
-u_char *out;
+Expand(u_char *in, u_char *out)
 {
         int j, c;
         int i;
@@ -85,9 +94,7 @@ u_char *out;
 /* The inverse of Expand
  */
 static void
-Collapse(in, out)
-u_char *in;
-u_char *out;
+Collapse(u_char *in, u_char *out)
 {
         int j;
         int i;
@@ -102,8 +109,7 @@ u_char *out;
 }
 
 bool
-DesSetkey(key)
-u_char *key;
+DesSetkey(u_char *key)
 {
        u_char des_key[8];
        u_char crypt_key[66];
@@ -118,9 +124,7 @@ u_char *key;
 }
 
 bool
-DesEncrypt(clear, cipher)
-u_char *clear; /* IN  8 octets */
-u_char *cipher;        /* OUT 8 octets */
+DesEncrypt(u_char *clear, u_char *cipher)
 {
        u_char des_input[66];
 
@@ -134,9 +138,7 @@ u_char *cipher;     /* OUT 8 octets */
 }
 
 bool
-DesDecrypt(cipher, clear)
-u_char *cipher;        /* IN  8 octets */
-u_char *clear; /* OUT 8 octets */
+DesDecrypt(u_char *cipher, u_char *clear)
 {
        u_char des_input[66];
 
@@ -150,35 +152,30 @@ u_char *clear;    /* OUT 8 octets */
 }
 
 #else /* USE_CRYPT */
-static des_key_schedule        key_schedule;
+static DES_key_schedule        key_schedule;
 
 bool
-DesSetkey(key)
-u_char *key;
+DesSetkey(u_char *key)
 {
-       des_cblock des_key;
+       DES_cblock des_key;
        MakeKey(key, des_key);
-       des_set_key(&des_key, key_schedule);
+       DES_set_key(&des_key, &key_schedule);
        return (1);
 }
 
 bool
-DesEncrypt(clear, key, cipher)
-u_char *clear; /* IN  8 octets */
-u_char *cipher;        /* OUT 8 octets */
+DesEncrypt(u_char *clear, u_char *cipher)
 {
-       des_ecb_encrypt((des_cblock *)clear, (des_cblock *)cipher,
-           key_schedule, 1);
+       DES_ecb_encrypt((DES_cblock *)clear, (DES_cblock *)cipher,
+           &key_schedule, 1);
        return (1);
 }
 
 bool
-DesDecrypt(cipher, clear)
-u_char *cipher;        /* IN  8 octets */
-u_char *clear; /* OUT 8 octets */
+DesDecrypt(u_char *cipher, u_char *clear)
 {
-       des_ecb_encrypt((des_cblock *)cipher, (des_cblock *)clear,
-           key_schedule, 0);
+       DES_ecb_encrypt((DES_cblock *)cipher, (DES_cblock *)clear,
+           &key_schedule, 0);
        return (1);
 }