/usr/include/isc/md5.h is in libbind-dev 1:9.9.5.dfsg-9+deb8u15.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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* Copyright (C) 2004-2007, 2009, 2010 Internet Systems Consortium, Inc. ("ISC")
* Copyright (C) 2000, 2001 Internet Software Consortium.
*
* Permission to use, copy, modify, and/or distribute this software for any
* purpose with or without fee is hereby granted, provided that the above
* copyright notice and this permission notice appear in all copies.
*
* THE SOFTWARE IS PROVIDED "AS IS" AND ISC DISCLAIMS ALL WARRANTIES WITH
* REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS. IN NO EVENT SHALL ISC BE LIABLE FOR ANY SPECIAL, DIRECT,
* 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.
*/
/* $Id: md5.h,v 1.20 2010/01/07 23:48:54 tbox Exp $ */
/*! \file isc/md5.h
* \brief This is the header file for the MD5 message-digest algorithm.
*
* The algorithm is due to Ron Rivest. This code was
* written by Colin Plumb in 1993, no copyright is claimed.
* This code is in the public domain; do with it what you wish.
*
* Equivalent code is available from RSA Data Security, Inc.
* This code has been tested against that, and is equivalent,
* except that you don't need to include two pages of legalese
* with every copy.
*
* To compute the message digest of a chunk of bytes, declare an
* MD5Context structure, pass it to MD5Init, call MD5Update as
* needed on buffers full of bytes, and then call MD5Final, which
* will fill a supplied 16-byte array with the digest.
*
* Changed so as no longer to depend on Colin Plumb's `usual.h'
* header definitions; now uses stuff from dpkg's config.h
* - Ian Jackson <ijackson@nyx.cs.du.edu>.
* Still in the public domain.
*/
#ifndef ISC_MD5_H
#define ISC_MD5_H 1
#include <isc/lang.h>
#include <isc/platform.h>
#include <isc/types.h>
#define ISC_MD5_DIGESTLENGTH 16U
#define ISC_MD5_BLOCK_LENGTH 64U
#ifdef ISC_PLATFORM_OPENSSLHASH
#include <openssl/evp.h>
typedef EVP_MD_CTX isc_md5_t;
#else
typedef struct {
isc_uint32_t buf[4];
isc_uint32_t bytes[2];
isc_uint32_t in[16];
} isc_md5_t;
#endif
ISC_LANG_BEGINDECLS
void
isc_md5_init(isc_md5_t *ctx);
void
isc_md5_invalidate(isc_md5_t *ctx);
void
isc_md5_update(isc_md5_t *ctx, const unsigned char *buf, unsigned int len);
void
isc_md5_final(isc_md5_t *ctx, unsigned char *digest);
ISC_LANG_ENDDECLS
#endif /* ISC_MD5_H */
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