/usr/share/lua/5.1/nginx/sha224.lua is in lua-nginx-string 0.09-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | -- Copyright (C) by Yichun Zhang (agentzh)
local sha256 = require "nginx.sha256"
local ffi = require "ffi"
local ffi_new = ffi.new
local ffi_str = ffi.string
local C = ffi.C
local setmetatable = setmetatable
local error = error
local _M = { _VERSION = '0.09' }
local mt = { __index = _M }
ffi.cdef[[
int SHA224_Init(SHA256_CTX *c);
int SHA224_Update(SHA256_CTX *c, const void *data, size_t len);
int SHA224_Final(unsigned char *md, SHA256_CTX *c);
]]
local digest_len = 28
local buf = ffi_new("char[?]", digest_len)
local ctx_ptr_type = ffi.typeof("SHA256_CTX[1]")
function _M.new(self)
local ctx = ffi_new(ctx_ptr_type)
if C.SHA224_Init(ctx) == 0 then
return nil
end
return setmetatable({ _ctx = ctx }, mt)
end
function _M.update(self, s)
return C.SHA224_Update(self._ctx, s, #s) == 1
end
function _M.final(self)
if C.SHA224_Final(buf, self._ctx) == 1 then
return ffi_str(buf, digest_len)
end
return nil
end
function _M.reset(self)
return C.SHA224_Init(self._ctx) == 1
end
return _M
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