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curl/lib/curl_des.c
David Benjamin 39c803cba2 openssl: remove most BoringSSL #ifdefs.
As of https://boringssl-review.googlesource.com/#/c/6980/, almost all of
BoringSSL #ifdefs in cURL should be unnecessary:

- BoringSSL provides no-op stubs for compatibility which replaces most
  #ifdefs.

- DES_set_odd_parity has been in BoringSSL for nearly a year now. Remove
  the compatibility codepath.

- With a small tweak to an extend_key_56_to_64 call, the NTLM code
  builds fine.

- Switch OCSP-related #ifdefs to the more generally useful
  OPENSSL_NO_OCSP.

The only #ifdefs which remain are Curl_ossl_version and the #undefs to
work around OpenSSL and wincrypt.h name conflicts. (BoringSSL leaves
that to the consumer. The in-header workaround makes things sensitive to
include order.)

This change errs on the side of removing conditionals despite many of
the restored codepaths being no-ops. (BoringSSL generally adds no-op
compatibility stubs when possible. OPENSSL_VERSION_NUMBER #ifdefs are
bad enough!)

Closes #640
2016-02-09 08:46:36 +01:00

64 lines
2.0 KiB
C

/***************************************************************************
* _ _ ____ _
* Project ___| | | | _ \| |
* / __| | | | |_) | |
* | (__| |_| | _ <| |___
* \___|\___/|_| \_\_____|
*
* Copyright (C) 2015, Steve Holme, <steve_holme@hotmail.com>.
*
* This software is licensed as described in the file COPYING, which
* you should have received as part of this distribution. The terms
* are also available at https://curl.haxx.se/docs/copyright.html.
*
* You may opt to use, copy, modify, merge, publish, distribute and/or sell
* copies of the Software, and permit persons to whom the Software is
* furnished to do so, under the terms of the COPYING file.
*
* This software is distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY
* KIND, either express or implied.
*
***************************************************************************/
#include "curl_setup.h"
#if defined(USE_NTLM) && !defined(USE_OPENSSL)
#include "curl_des.h"
/*
* Curl_des_set_odd_parity()
*
* This is used to apply odd parity to the given byte array. It is typically
* used by when a cryptography engines doesn't have it's own version.
*
* The function is a port of the Java based oddParity() function over at:
*
* http://davenport.sourceforge.net/ntlm.html
*
* Parameters:
*
* bytes [in/out] - The data whose parity bits are to be adjusted for
* odd parity.
* len [out] - The length of the data.
*/
void Curl_des_set_odd_parity(unsigned char *bytes, size_t len)
{
size_t i;
for(i = 0; i < len; i++) {
unsigned char b = bytes[i];
bool needs_parity = (((b >> 7) ^ (b >> 6) ^ (b >> 5) ^
(b >> 4) ^ (b >> 3) ^ (b >> 2) ^
(b >> 1)) & 0x01) == 0;
if(needs_parity)
bytes[i] |= 0x01;
else
bytes[i] &= 0xfe;
}
}
#endif /* USE_NTLM && !USE_OPENSSL */