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| author |  brian m. carlson <sandals@crustytoothpaste.net> | 2018-11-14 04:09:37 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2018-11-14 16:54:53 +0900 |
| commit | 27dc04c54506967fcaa87b2d560547ee5633040c (patch) | |
| tree | 488f25ff856706ec8eaf74ea2bcfafa0252c9061 /Documentation/git-for-each-ref.txt | |
| parent | Add a base implementation of SHA-256 support (diff) | |
| download | tgif-27dc04c54506967fcaa87b2d560547ee5633040c.tar.xz | |
sha256: add an SHA-256 implementation using libgcrypt
Generally, one gets better performance out of cryptographic routines
written in assembly than C, and this is also true for SHA-256. In
addition, most Linux distributions cannot distribute Git linked against
OpenSSL for licensing reasons.
Most systems with GnuPG will also have libgcrypt, since it is a
dependency of GnuPG. libgcrypt is also faster than the SHA1DC
implementation for messages of a few KiB and larger.
For comparison, on a Core i7-6600U, this implementation processes 16 KiB
chunks at 355 MiB/s while SHA1DC processes equivalent chunks at 337
MiB/s.
In addition, libgcrypt is licensed under the LGPL 2.1, which is
compatible with the GPL. Add an implementation of SHA-256 that uses
libgcrypt.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
Diffstat (limited to 'Documentation/git-for-each-ref.txt')
0 files changed, 0 insertions, 0 deletions