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--
-- util.lua
-- various utility functions
-- Copyright (c) 2016 Jeff Kent <jeff@jkent.net>
--
local function hash_file(file, ctx)
local f = io.open(file, "r")
if f == nil then
return nil
end
repeat
local buf = f:read(0x10000)
ctx:update(buf)
until buf == nil
f:close()
return tostring(ctx)
end
function sha256_file(file)
local ctx = nettle.sha256()
return hash_file(file, ctx)
end
function md5_file(file)
local ctx = nettle.md5()
return hash_file(file, ctx)
end
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