thodg/libgit2/src/block-sha1/sha1.h

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• Hash : 5dddf7c8
  Author :
  Date : 2010-04-14T20:41:57
  

  Add block-sha1 in favour of the mozilla routines Since block-sha1 from git.git has such excellent performance, we can also get rid of the openssl dependency. It's rather simple to add it back later as an optional extra, but we really needn't bother to pull in the entire ssl library and have to deal with linking issues now that we have the portable and, performance-wise, truly excellent block-sha1 code to fall back on. Since this requires a slight revamp of the build rules anyway, we take the opportunity to fix including EXTRA_OBJS in the final build as well. The block-sha1 code was originally implemented for git.git by Linus Torvalds <torvalds@linux-foundation.org> and was later polished by Nicolas Pitre <nico@cam.org>. Signed-off-by: Andreas Ericsson <ae@op5.se>

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• src/block-sha1/sha1.h

• /*
   * SHA1 routine optimized to do word accesses rather than byte accesses,
   * and to avoid unnecessary copies into the context array.
   *
   * This was initially based on the Mozilla SHA1 implementation, although
   * none of the original Mozilla code remains.
   */
  
  typedef struct {
  	unsigned long long size;
  	unsigned int H[5];
  	unsigned int W[16];
  } blk_SHA_CTX;
  
  void blk_SHA1_Init(blk_SHA_CTX *ctx);
  void blk_SHA1_Update(blk_SHA_CTX *ctx, const void *dataIn, unsigned long len);
  void blk_SHA1_Final(unsigned char hashout[20], blk_SHA_CTX *ctx);
  
  #define git_SHA_CTX	blk_SHA_CTX
  #define git_SHA1_Init	blk_SHA1_Init
  #define git_SHA1_Update	blk_SHA1_Update
  #define git_SHA1_Final	blk_SHA1_Final
  

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