1 files changed, 60 insertions, 0 deletions
diff --git a/httpdigest.h b/httpdigest.h
new file mode 100644
index 0000000..8423841
--- /dev/null
+++ b/httpdigest.h
@@ -0,0 +1,60 @@
+/*
+ *  OpenVPN -- An application to securely tunnel IP networks
+ *             over a single TCP/UDP port, with support for SSL/TLS-based
+ *             session authentication and key exchange,
+ *             packet encryption, packet authentication, and
+ *             packet compression.
+ *
+ *  Copyright (C) 2002-2010 OpenVPN Technologies, Inc. <sales@openvpn.net>
+ *
+ *  This program is free software; you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License version 2
+ *  as published by the Free Software Foundation.
+ *
+ *  This program is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ *
+ *  You should have received a copy of the GNU General Public License
+ *  along with this program (see the file COPYING included with this
+ *  distribution); if not, write to the Free Software Foundation, Inc.,
+ *  59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
+ */
+
+#if PROXY_DIGEST_AUTH
+
+#define HASHLEN 16
+typedef unsigned char HASH[HASHLEN];
+#define HASHHEXLEN 32
+typedef unsigned char HASHHEX[HASHHEXLEN+1];
+#undef IN
+#undef OUT
+#define IN const
+#define OUT
+
+/* calculate H(A1) as per HTTP Digest spec */
+void DigestCalcHA1(
+    IN char * pszAlg,
+    IN char * pszUserName,
+    IN char * pszRealm,
+    IN char * pszPassword,
+    IN char * pszNonce,
+    IN char * pszCNonce,
+    OUT HASHHEX SessionKey
+    );
+
+/* calculate request-digest/response-digest as per HTTP Digest spec */
+void DigestCalcResponse(
+    IN HASHHEX HA1,           /* H(A1) */
+    IN char * pszNonce,       /* nonce from server */
+    IN char * pszNonceCount,  /* 8 hex digits */
+    IN char * pszCNonce,      /* client nonce */
+    IN char * pszQop,         /* qop-value: "", "auth", "auth-int" */
+    IN char * pszMethod,      /* method from the request */
+    IN char * pszDigestUri,   /* requested URL */
+    IN HASHHEX HEntity,       /* H(entity body) if qop="auth-int" */
+    OUT HASHHEX Response      /* request-digest or response-digest */
+    );
+
+#endif