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Merge pull request #363 from nbwk1988/master

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add hmac_md5
This commit is contained in:
云风
2015-10-27 11:39:55 +08:00
parent 26cbebfcfd 1999a03ff7
commit b1060478f7
1 changed files with 21 additions and 1 deletions
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22
lualib/md5.lua
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@@ -15,4 +15,24 @@ function core.sumhexa (k)
end))
end
return core
local function get_ipad(c)
return string.char(c:byte() ~ 0x36)
end
local function get_opad(c)
return string.char(c:byte() ~ 0x5c)
end
function core.hmacmd5(data,key)
if #key>64 then
key=core.sum(key)
key=key:sub(1,16)
end
local ipad_s=key:gsub(".", get_ipad)..string.rep("6",64-#key)
local opad_s=key:gsub(".", get_opad)..string.rep("\\",64-#key)
local istr=core.sum(ipad_s..data)
local ostr=core.sumhexa(opad_s..istr)
return ostr
end
return core