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| author |  brian m. carlson <sandals@crustytoothpaste.net> | 2018-11-14 04:09:33 +0000 |
|---|---|---|
| committer |  Junio C Hamano <gitster@pobox.com> | 2018-11-14 16:54:52 +0900 |
| commit | a2ce0a752600a44979da94b19aa1b367c6850bd7 (patch) | |
| tree | 8053b48486e56cd2719508fa4f996e22997d989f | |
| parent | t: make the sha1 test-tool helper generic (diff) | |
| download | tgif-a2ce0a752600a44979da94b19aa1b367c6850bd7.tar.xz | |
sha1-file: add a constant for hash block size
There is one place we need the hash algorithm block size: the HMAC code
for push certs. Expose this constant in struct git_hash_algo and expose
values for SHA-1 and for the largest value of any hash.
Signed-off-by: brian m. carlson <sandals@crustytoothpaste.net>
Signed-off-by: Junio C Hamano <gitster@pobox.com>
| -rw-r--r-- | cache.h | 4 | ||||
| -rw-r--r-- | hash.h | 3 | ||||
| -rw-r--r-- | sha1-file.c | 2 |
3 files changed, 9 insertions, 0 deletions
@@ -45,10 +45,14 @@ unsigned long git_deflate_bound(git_zstream *, unsigned long); /* The length in bytes and in hex digits of an object name (SHA-1 value). */ #define GIT_SHA1_RAWSZ 20 #define GIT_SHA1_HEXSZ (2 * GIT_SHA1_RAWSZ) +/* The block size of SHA-1. */ +#define GIT_SHA1_BLKSZ 64 /* The length in byte and in hex digits of the largest possible hash value. */ #define GIT_MAX_RAWSZ GIT_SHA1_RAWSZ #define GIT_MAX_HEXSZ GIT_SHA1_HEXSZ +/* The largest possible block size for any supported hash. */ +#define GIT_MAX_BLKSZ GIT_SHA1_BLKSZ struct object_id { unsigned char hash[GIT_MAX_RAWSZ]; @@ -81,6 +81,9 @@ struct git_hash_algo { /* The length of the hash in hex characters. */ size_t hexsz; + /* The block size of the hash. */ + size_t blksz; + /* The hash initialization function. */ git_hash_init_fn init_fn; diff --git a/sha1-file.c b/sha1-file.c index 3a75d515eb..9aadaf0c8d 100644 --- a/sha1-file.c +++ b/sha1-file.c @@ -90,6 +90,7 @@ const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = { 0x00000000, 0, 0, + 0, git_hash_unknown_init, git_hash_unknown_update, git_hash_unknown_final, @@ -102,6 +103,7 @@ const struct git_hash_algo hash_algos[GIT_HASH_NALGOS] = { 0x73686131, GIT_SHA1_RAWSZ, GIT_SHA1_HEXSZ, + GIT_SHA1_BLKSZ, git_hash_sha1_init, git_hash_sha1_update, git_hash_sha1_final, |