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add comment to hmac64

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Cloud Wu
2017-06-21 17:33:27 +08:00
parent b3c60d1de2
commit 933f6730b2
1 changed files with 2 additions and 1 deletions
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lualib-src/lua-crypt.c
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@@ -545,7 +545,8 @@ const uint32_t r[] = {7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22, 7, 12, 17, 22
// leftrotate function definition
#define LEFTROTATE(x, c) (((x) << (c)) | ((x) >> (32 - (c))))
// hmac64 use md5 algorithm without padding, and the result is (c^d .. a^b)
static void
hmac(uint32_t x[2], uint32_t y[2], uint32_t result[2]) {
uint32_t w[16];