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/*
* 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) 2002-2021 OpenVPN 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; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 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 /* if PROXY_DIGEST_AUTH */
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