/usr/include/mysql/private/sha2.h is in libmariadbclient-dev 5.5.36-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 | /* Copyright (c) 2007, 2010, Oracle and/or its affiliates. All rights reserved.
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; version 2 of the License.
 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 St, Fifth Floor, Boston, MA 02110-1301  USA */
#ifndef included_sha2_h
#define included_sha2_h
#include <my_config.h>
#if defined(HAVE_YASSL) || defined(HAVE_OPENSSL)
#  ifdef HAVE_STDDEF_H
#    include <stddef.h>
#  endif
#  ifndef HAVE_YASSL
#    include <openssl/sha.h>
#  else
#include "../extra/yassl/taocrypt/include/sha.hpp"
#    ifdef __cplusplus
extern "C" {
#    endif
#ifndef SHA512_DIGEST_LENGTH
#define SHA512_DIGEST_LENGTH TaoCrypt::SHA512::DIGEST_SIZE
#endif
#ifndef SHA384_DIGEST_LENGTH
#define SHA384_DIGEST_LENGTH TaoCrypt::SHA384::DIGEST_SIZE
#endif
#ifndef SHA256_DIGEST_LENGTH
#define SHA256_DIGEST_LENGTH TaoCrypt::SHA256::DIGEST_SIZE
#endif
#ifndef SHA224_DIGEST_LENGTH
#define SHA224_DIGEST_LENGTH TaoCrypt::SHA224::DIGEST_SIZE
#endif
#define GEN_YASSL_SHA2_BRIDGE(size) \
unsigned char* SHA##size(const unsigned char *input_ptr, size_t input_length, \
               char unsigned *output_ptr);
GEN_YASSL_SHA2_BRIDGE(512);
GEN_YASSL_SHA2_BRIDGE(384);
GEN_YASSL_SHA2_BRIDGE(256);
GEN_YASSL_SHA2_BRIDGE(224);
#undef GEN_YASSL_SHA2_BRIDGE
#    ifdef __cplusplus
}
#    endif
#  endif /* HAVE_YASSL */
#endif /* HAVE_OPENSSL || HAVE_YASSL */
#endif /* included_sha2_h */
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