Adding back DesEncrypt/DesDecrypt functions as they are a special incarnation DES...

[ppp.git] / pppd / pppcrypt.h

diff --git a/pppd/pppcrypt.h b/pppd/pppcrypt.h
new file mode 100644 (file)
index 0000000..9083594
--- /dev/null
+++ b/pppd/pppcrypt.h
@@ -0,0 +1,75 @@
+/*
+ * pppcrypt.c - PPP/DES linkage for MS-CHAP and EAP SRP-SHA1
+ *
+ * Extracted from chap_ms.c by James Carlson.
+ * Updated to better reflect RFC2759 by Eivind Naess
+ *
+ * Copyright (c) 2022 Eivind Naess.  All rights reserved.
+ * Copyright (c) 1995 Eric Rosenquist.  All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ *
+ * 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.
+ */
+#ifndef PPP_PPPCRYPT_H
+#define        PPP_PPPCRYPT_H
+
+#include "pppdconf.h"
+
+/**
+ * This is the DES encrypt functions as described by RFC2759.
+ * 
+ * Parameters:
+ * unsigned char *clear:
+ *      A 8 byte input array to be encrypted
+ * 
+ * unsigned char *key: 
+ *      A raw 7-byte array to be expanded to 8 with odd-parity
+ *
+ * unsigned char *cipher:
+ *      A 8 byte outut array providing space for the output data
+ *
+ * DesEncrypt returns 1 on success
+ */
+int DesEncrypt(unsigned char *clear, unsigned char *key, 
+        unsigned char *cipher);
+
+/**
+ * This is the DES decrypt functions as described by RFC2759.
+ * 
+ * Parameters:
+ * unsigned char *cipher:
+ *      A 8 byte input array to be decrypted
+ *
+ * unsigned char *key: 
+ *      A raw 7-byte array to be expanded to a 8-byte key with odd-parity
+ *
+ * unsigned char *clear:
+ *      A 8 byte output array providing space for the output data
+ *
+ * DesDecrypt returns 1 on success
+ */
+int DesDecrypt(unsigned char *cipher, unsigned char *key, 
+        unsigned char *clear);
+
+#endif /* PPP_PPPCRYPT_H */