51f94caba1
... instead of the RSA code, the license for which contains an advertising clause. It is strongly believed that the RSA advertising clause is innocuous, because: - A clarification from RSA (http://www.ietf.org/ietf-ftp/IPR/RSA-MD-all), published in 2000, stated: "Implementations of these message-digest algorithms, including implementations derived from the reference C code in RFC-1319, RFC-1320, and RFC-1321, may be made, used, and sold without license from RSA for any purpose." Referring to the opinion from Fedora's legal team (https://fedoraproject.org/wiki/Licensing:FAQ?rd=Licensing/FAQ#What_about_the_RSA_license_on_their_MD5_implementation.3F_Isn.27t_that_GPL-incompatible.3F), this means that md5.c and md5.h, which were derived from the original RFC 1321 reference code (http://www.faqs.org/rfcs/rfc1321.html), can be used without the RSA license. - In the context of libjpeg-turbo, RSA's MD5 code was used only in the build/test system. It was not part of the libjpeg-turbo binary distribution, and thus the only "material mentioning or referencing" the MD5 code was the libjpeg-turbo source code, which-- by virtue of including RSA's original copyright headers-- properly attributed the code as required under the RSA license. However, in light of the open source community's tendency to have knee-jerk reactions to stuff like this, it would've been necessary to include the above explanation in our source tree in order to head off potential FUD, and a simple fix is always better than a complex explanation. This commit also assigns the 3-clause BSD license to my modifications of the MD5 code. This license is the same one used by md5cmp and other parts of the build system.
58 lines
2.3 KiB
C
58 lines
2.3 KiB
C
/*
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* libjpeg-turbo Modifications:
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* Copyright (C)2018 D. R. Commander. All Rights Reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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*
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* - Redistributions of source code must retain the above copyright notice,
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* this list of conditions and the following disclaimer.
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* - Redistributions in binary form must reproduce the above copyright notice,
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* this list of conditions and the following disclaimer in the documentation
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* and/or other materials provided with the distribution.
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* - Neither the name of the libjpeg-turbo Project nor the names of its
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* contributors may be used to endorse or promote products derived from this
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* software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS",
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* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDERS OR CONTRIBUTORS BE
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* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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#ifndef MD5_H
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#define MD5_H
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#include <sys/types.h>
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#ifdef __amigaos4__
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#include <machine/endian.h>
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#endif
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/* On machines where "long" is 64 bits, we need to declare
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uint32 as something guaranteed to be 32 bits. */
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typedef unsigned int uint32;
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typedef struct MD5Context {
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uint32 buf[4];
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uint32 bits[2];
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unsigned char in[64];
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} MD5_CTX;
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extern void MD5Init(struct MD5Context *ctx);
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extern void MD5Update(struct MD5Context *ctx, unsigned char *buf,
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unsigned int len);
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extern void MD5Final(unsigned char digest[16], struct MD5Context *ctx);
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extern void MD5Transform(uint32 buf[4], uint32 in[16]);
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extern char *MD5File(const char *, char *);
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extern char *MD5FileChunk(const char *, char *, off_t, off_t);
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#endif /* !MD5_H */
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