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      1  1.1  mrg This local copy of a SHA1 implementation based on the sources below.
      2  1.1  mrg 
      3  1.1  mrg Why:
      4  1.1  mrg  - Some libraries suffer from race condition and other issues. For example see
      5  1.1  mrg commit ade3108bb5b0 ("util: Fix race condition on libgcrypt initialization").
      6  1.1  mrg 
      7  1.1  mrg  - Fold the handling and detection of _eight_ implementations at configure
      8  1.1  mrg stage and _seven_ different codepaths.
      9  1.1  mrg 
     10  1.1  mrg  - Have a single, uniform, code used by developers, testers and users.
     11  1.1  mrg 
     12  1.1  mrg  - Avoid conflicts when using software which ships with it's own SHA1 library.
     13  1.1  mrg The latter of which conflicting with the one mesa is build against.
     14  1.1  mrg 
     15  1.1  mrg 
     16  1.1  mrg 
     17  1.1  mrg Source:
     18  1.1  mrg The SHA1 implementation is copied verbatim from the following links.
     19  1.1  mrg At the time of checkout HEAD is 1.25 and 1.24 respectively.
     20  1.1  mrg 
     21  1.1  mrg http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/lib/libc/hash/sha1.c?rev=HEAD
     22  1.1  mrg http://cvsweb.openbsd.org/cgi-bin/cvsweb/~checkout~/src/include/sha1.h?rev=HEAD
     23  1.1  mrg 
     24  1.1  mrg 
     25  1.1  mrg Notes:
     26  1.1  mrg  - The files should not have any local changes. If there are any they should be
     27  1.1  mrg clearly documented below and one should aim to upstream them where possible.
     28  1.1  mrg  
     29  1.1  mrg  - Files will be periodically syncronised with the respective upstream sources.
     30  1.1  mrg Updates will be made regularly, but since the code is _not_ aimed as a
     31  1.1  mrg cryptography solution any issues found should not be considered security ones.
     32  1.1  mrg 
     33  1.1  mrg 
     34  1.1  mrg Local changes:
     35  1.1  mrg  - Removed __bounded__ attribute qualifiers. Unavailable on platforms targeted
     36  1.1  mrg by Mesa. Upstream status: TBD (N/A ?)
     37  1.1  mrg 
     38  1.1  mrg  - Pick the sha1.h header from the current folder, by using "" over <> in the
     39  1.1  mrg include directive. Upstream status: TBD
     40  1.1  mrg 
     41  1.1  mrg  - Remove unused function prototypes - SHA1End, SHA1File, SHA1FileChunk and
     42  1.1  mrg SHA1Data. Upstream status: TBD
     43  1.1  mrg 
     44  1.1  mrg  - Use stdint.h integer types - u_int{8,16,32}_t -> uint{8,16,32}_t and
     45  1.1  mrg u_int -> uint32_t, change header include. Upstream status: TBD
     46  1.1  mrg 
     47  1.1  mrg  - Revert sha1.c rev 1.26 change (introduce DEF_WEAK).
     48  1.1  mrg Upstream status: TBD (N/A ?)
     49  1.1  mrg 
     50  1.1  mrg  - Add stdint.h include in sha1.h for uint*_t types. Upstream status: TBD
     51  1.1  mrg 
     52  1.1  mrg  - Add stddef.h include in sha1.h for size_t type. Upstream status: TBD
     53  1.1  mrg 
     54  1.1  mrg  - Use memset over explicit_bzero, since memset_s once isn't widely available.
     55  1.1  mrg Upstream status: TBD (N/A ?)
     56  1.1  mrg 
     57  1.1  mrg  - Manually expand __BEGIN_DECLS/__END_DECLS and make sure that they include
     58  1.1  mrg the struct declaration.
     59  1.1  mrg Upstream status: TBD
     60  1.1  mrg 
     61  1.1  mrg  - Add non-typedef struct name.
     62  1.1  mrg Upstream status: TBD
     63