Module:Md5 - Revision history

>Eave: can use a fixed bit library

2020-04-08T07:56:50Z

can use a fixed bit library

>Eave: can use a fixed bit library

2020-04-08T07:56:50Z

can use a fixed bit library

>Eave: can use a fixed bit library

2020-04-08T07:56:50Z

can use a fixed bit library

>Eave: remove wikitext invokation entry points, this is really only needed in lua modules

2020-04-08T07:45:05Z

remove wikitext invokation entry points, this is really only needed in lua modules

>Eave: remove wikitext invokation entry points, this is really only needed in lua modules

2020-04-08T07:45:05Z

remove wikitext invokation entry points, this is really only needed in lua modules

>Eave: remove wikitext invokation entry points, this is really only needed in lua modules

2020-04-08T07:45:05Z

remove wikitext invokation entry points, this is really only needed in lua modules

>Eave: Created page with "-- Lua Module for calculating md5 hash sums -- Needed in order to get absolute file paths for hosted images from Lua modules. local p = {} local md5 = { _VERSION = "md5...."

2020-04-08T07:41:43Z

Created page with "-- Lua Module for calculating md5 hash sums -- Needed in order to get absolute file paths for hosted images from Lua modules. local p = {} local md5 = { _VERSION = "md5...."

>Eave: Created page with "-- Lua Module for calculating md5 hash sums -- Needed in order to get absolute file paths for hosted images from Lua modules. local p = {} local md5 = { _VERSION = "md5...."

2020-04-08T07:41:43Z

Created page with "-- Lua Module for calculating md5 hash sums -- Needed in order to get absolute file paths for hosted images from Lua modules. local p = {} local md5 = { _VERSION = "md5...."

>Eave: Created page with "-- Lua Module for calculating md5 hash sums -- Needed in order to get absolute file paths for hosted images from Lua modules. local p = {} local md5 = { _VERSION = "md5...."

2020-04-08T07:41:43Z

Created page with "-- Lua Module for calculating md5 hash sums -- Needed in order to get absolute file paths for hosted images from Lua modules. local p = {} local md5 = { _VERSION = "md5...."

New page

-- Lua Module for calculating md5 hash sums
-- Needed in order to get absolute file paths for hosted images from Lua modules.
local p = {}
local md5 = {
_VERSION = "md5.lua 1.1.0",
_DESCRIPTION = "MD5 computation in Lua (5.1-3, LuaJIT)",
_URL = "https://github.com/kikito/md5.lua",
_LICENSE = [[
MIT LICENSE

Copyright (c) 2013 Enrique García Cota + Adam Baldwin + hanzao + Equi 4 Software

Permission is hereby granted, free of charge, to any person obtaining a
copy of this software and associated documentation files (the
"Software"), to deal in the Software without restriction, including
without limitation the rights to use, copy, modify, merge, publish,
distribute, sublicense, and/or sell copies of the Software, and to
permit persons to whom the Software is furnished to do so, subject to
the following conditions:

The above copyright notice and this permission notice shall be included
in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
]]
}

-- bit lib implementions

local char, byte, format, rep, sub =
string.char, string.byte, string.format, string.rep, string.sub
local bit_or, bit_and, bit_not, bit_xor, bit_rshift, bit_lshift

local ok, bit = pcall(require, 'bit')
if ok then
bit_or, bit_and, bit_not, bit_xor, bit_rshift, bit_lshift = bit.bor, bit.band, bit.bnot, bit.bxor, bit.rshift, bit.lshift
else
ok, bit = pcall(require, 'bit32')

if ok then

bit_not = bit.bnot

local tobit = function(n)
return n <= 0x7fffffff and n or -(bit_not(n) + 1)
end

local normalize = function(f)
return function(a,b) return tobit(f(tobit(a), tobit(b))) end
end

bit_or, bit_and, bit_xor = normalize(bit.bor), normalize(bit.band), normalize(bit.bxor)
bit_rshift, bit_lshift = normalize(bit.rshift), normalize(bit.lshift)

else

local function tbl2number(tbl)
local result = 0
local power = 1
for i = 1, #tbl do
result = result + tbl[i] * power
power = power * 2
end
return result
end

local function expand(t1, t2)
local big, small = t1, t2
if(#big < #small) then
big, small = small, big
end
-- expand small
for i = #small + 1, #big do
small[i] = 0
end
end

local to_bits -- needs to be declared before bit_not

bit_not = function(n)
local tbl = to_bits(n)
local size = math.max(#tbl, 32)
for i = 1, size do
if(tbl[i] == 1) then
tbl[i] = 0
else
tbl[i] = 1
end
end
return tbl2number(tbl)
end

-- defined as local above
to_bits = function (n)
if(n < 0) then
-- negative
return to_bits(bit_not(math.abs(n)) + 1)
end
-- to bits table
local tbl = {}
local cnt = 1
local last
while n > 0 do
last = n % 2
tbl[cnt] = last
n = (n-last)/2
cnt = cnt + 1
end

return tbl
end

bit_or = function(m, n)
local tbl_m = to_bits(m)
local tbl_n = to_bits(n)
expand(tbl_m, tbl_n)

local tbl = {}
for i = 1, #tbl_m do
if(tbl_m[i]== 0 and tbl_n[i] == 0) then
tbl[i] = 0
else
tbl[i] = 1
end
end

return tbl2number(tbl)
end

bit_and = function(m, n)
local tbl_m = to_bits(m)
local tbl_n = to_bits(n)
expand(tbl_m, tbl_n)

local tbl = {}
for i = 1, #tbl_m do
if(tbl_m[i]== 0 or tbl_n[i] == 0) then
tbl[i] = 0
else
tbl[i] = 1
end
end

return tbl2number(tbl)
end

bit_xor = function(m, n)
local tbl_m = to_bits(m)
local tbl_n = to_bits(n)
expand(tbl_m, tbl_n)

local tbl = {}
for i = 1, #tbl_m do
if(tbl_m[i] ~= tbl_n[i]) then
tbl[i] = 1
else
tbl[i] = 0
end
end

return tbl2number(tbl)
end

bit_rshift = function(n, bits)
local high_bit = 0
if(n < 0) then
-- negative
n = bit_not(math.abs(n)) + 1
high_bit = 0x80000000
end

local floor = math.floor

for i=1, bits do
n = n/2
n = bit_or(floor(n), high_bit)
end
return floor(n)
end

bit_lshift = function(n, bits)
if(n < 0) then
-- negative
n = bit_not(math.abs(n)) + 1
end

for i=1, bits do
n = n*2
end
return bit_and(n, 0xFFFFFFFF)
end
end
end

-- convert little-endian 32-bit int to a 4-char string
local function lei2str(i)
local f=function (s) return char( bit_and( bit_rshift(i, s), 255)) end
return f(0)..f(8)..f(16)..f(24)
end

-- convert raw string to big-endian int
local function str2bei(s)
local v=0
for i=1, #s do
v = v * 256 + byte(s, i)
end
return v
end

-- convert raw string to little-endian int
local function str2lei(s)
local v=0
for i = #s,1,-1 do
v = v*256 + byte(s, i)
end
return v
end

-- cut up a string in little-endian ints of given size
local function cut_le_str(s,...)
local o, r = 1, {}
local args = {...}
for i=1, #args do
table.insert(r, str2lei(sub(s, o, o + args[i] - 1)))
o = o + args[i]
end
return r
end

local swap = function (w) return str2bei(lei2str(w)) end

-- An MD5 mplementation in Lua, requires bitlib (hacked to use LuaBit from above, ugh)
-- 10/02/2001 jcw@equi4.com

local CONSTS = {
0xd76aa478, 0xe8c7b756, 0x242070db, 0xc1bdceee,
0xf57c0faf, 0x4787c62a, 0xa8304613, 0xfd469501,
0x698098d8, 0x8b44f7af, 0xffff5bb1, 0x895cd7be,
0x6b901122, 0xfd987193, 0xa679438e, 0x49b40821,
0xf61e2562, 0xc040b340, 0x265e5a51, 0xe9b6c7aa,
0xd62f105d, 0x02441453, 0xd8a1e681, 0xe7d3fbc8,
0x21e1cde6, 0xc33707d6, 0xf4d50d87, 0x455a14ed,
0xa9e3e905, 0xfcefa3f8, 0x676f02d9, 0x8d2a4c8a,
0xfffa3942, 0x8771f681, 0x6d9d6122, 0xfde5380c,
0xa4beea44, 0x4bdecfa9, 0xf6bb4b60, 0xbebfbc70,
0x289b7ec6, 0xeaa127fa, 0xd4ef3085, 0x04881d05,
0xd9d4d039, 0xe6db99e5, 0x1fa27cf8, 0xc4ac5665,
0xf4292244, 0x432aff97, 0xab9423a7, 0xfc93a039,
0x655b59c3, 0x8f0ccc92, 0xffeff47d, 0x85845dd1,
0x6fa87e4f, 0xfe2ce6e0, 0xa3014314, 0x4e0811a1,
0xf7537e82, 0xbd3af235, 0x2ad7d2bb, 0xeb86d391,
0x67452301, 0xefcdab89, 0x98badcfe, 0x10325476
}

local f=function (x,y,z) return bit_or(bit_and(x,y),bit_and(-x-1,z)) end
local g=function (x,y,z) return bit_or(bit_and(x,z),bit_and(y,-z-1)) end
local h=function (x,y,z) return bit_xor(x,bit_xor(y,z)) end
local i=function (x,y,z) return bit_xor(y,bit_or(x,-z-1)) end
local z=function (ff,a,b,c,d,x,s,ac)
a=bit_and(a+ff(b,c,d)+x+ac,0xFFFFFFFF)
-- be *very* careful that left shift does not cause rounding!
return bit_or(bit_lshift(bit_and(a,bit_rshift(0xFFFFFFFF,s)),s),bit_rshift(a,32-s))+b
end

local function transform(A,B,C,D,X)
local a,b,c,d=A,B,C,D
local t=CONSTS

a=z(f,a,b,c,d,X[ 0], 7,t[ 1])
d=z(f,d,a,b,c,X[ 1],12,t[ 2])
c=z(f,c,d,a,b,X[ 2],17,t[ 3])
b=z(f,b,c,d,a,X[ 3],22,t[ 4])
a=z(f,a,b,c,d,X[ 4], 7,t[ 5])
d=z(f,d,a,b,c,X[ 5],12,t[ 6])
c=z(f,c,d,a,b,X[ 6],17,t[ 7])
b=z(f,b,c,d,a,X[ 7],22,t[ 8])
a=z(f,a,b,c,d,X[ 8], 7,t[ 9])
d=z(f,d,a,b,c,X[ 9],12,t[10])
c=z(f,c,d,a,b,X[10],17,t[11])
b=z(f,b,c,d,a,X[11],22,t[12])
a=z(f,a,b,c,d,X[12], 7,t[13])
d=z(f,d,a,b,c,X[13],12,t[14])
c=z(f,c,d,a,b,X[14],17,t[15])
b=z(f,b,c,d,a,X[15],22,t[16])

a=z(g,a,b,c,d,X[ 1], 5,t[17])
d=z(g,d,a,b,c,X[ 6], 9,t[18])
c=z(g,c,d,a,b,X[11],14,t[19])
b=z(g,b,c,d,a,X[ 0],20,t[20])
a=z(g,a,b,c,d,X[ 5], 5,t[21])
d=z(g,d,a,b,c,X[10], 9,t[22])
c=z(g,c,d,a,b,X[15],14,t[23])
b=z(g,b,c,d,a,X[ 4],20,t[24])
a=z(g,a,b,c,d,X[ 9], 5,t[25])
d=z(g,d,a,b,c,X[14], 9,t[26])
c=z(g,c,d,a,b,X[ 3],14,t[27])
b=z(g,b,c,d,a,X[ 8],20,t[28])
a=z(g,a,b,c,d,X[13], 5,t[29])
d=z(g,d,a,b,c,X[ 2], 9,t[30])
c=z(g,c,d,a,b,X[ 7],14,t[31])
b=z(g,b,c,d,a,X[12],20,t[32])

a=z(h,a,b,c,d,X[ 5], 4,t[33])
d=z(h,d,a,b,c,X[ 8],11,t[34])
c=z(h,c,d,a,b,X[11],16,t[35])
b=z(h,b,c,d,a,X[14],23,t[36])
a=z(h,a,b,c,d,X[ 1], 4,t[37])
d=z(h,d,a,b,c,X[ 4],11,t[38])
c=z(h,c,d,a,b,X[ 7],16,t[39])
b=z(h,b,c,d,a,X[10],23,t[40])
a=z(h,a,b,c,d,X[13], 4,t[41])
d=z(h,d,a,b,c,X[ 0],11,t[42])
c=z(h,c,d,a,b,X[ 3],16,t[43])
b=z(h,b,c,d,a,X[ 6],23,t[44])
a=z(h,a,b,c,d,X[ 9], 4,t[45])
d=z(h,d,a,b,c,X[12],11,t[46])
c=z(h,c,d,a,b,X[15],16,t[47])
b=z(h,b,c,d,a,X[ 2],23,t[48])

a=z(i,a,b,c,d,X[ 0], 6,t[49])
d=z(i,d,a,b,c,X[ 7],10,t[50])
c=z(i,c,d,a,b,X[14],15,t[51])
b=z(i,b,c,d,a,X[ 5],21,t[52])
a=z(i,a,b,c,d,X[12], 6,t[53])
d=z(i,d,a,b,c,X[ 3],10,t[54])
c=z(i,c,d,a,b,X[10],15,t[55])
b=z(i,b,c,d,a,X[ 1],21,t[56])
a=z(i,a,b,c,d,X[ 8], 6,t[57])
d=z(i,d,a,b,c,X[15],10,t[58])
c=z(i,c,d,a,b,X[ 6],15,t[59])
b=z(i,b,c,d,a,X[13],21,t[60])
a=z(i,a,b,c,d,X[ 4], 6,t[61])
d=z(i,d,a,b,c,X[11],10,t[62])
c=z(i,c,d,a,b,X[ 2],15,t[63])
b=z(i,b,c,d,a,X[ 9],21,t[64])

return bit_and(A+a,0xFFFFFFFF),bit_and(B+b,0xFFFFFFFF),
bit_and(C+c,0xFFFFFFFF),bit_and(D+d,0xFFFFFFFF)
end

----------------------------------------------------------------

local function md5_update(self, s)
self.pos = self.pos + #s
s = self.buf .. s
for ii = 1, #s - 63, 64 do
local X = cut_le_str(sub(s,ii,ii+63),4,4,4,4,4,4,4,4,4,4,4,4,4,4,4,4)
assert(#X == 16)
X[0] = table.remove(X,1) -- zero based!
self.a,self.b,self.c,self.d = transform(self.a,self.b,self.c,self.d,X)
end
self.buf = sub(s, math.floor(#s/64)*64 + 1, #s)
return self
end

local function md5_finish(self)
local msgLen = self.pos
local padLen = 56 - msgLen % 64

if msgLen % 64 > 56 then padLen = padLen + 64 end

if padLen == 0 then padLen = 64 end

local s = char(128) .. rep(char(0),padLen-1) .. lei2str(bit_and(8*msgLen, 0xFFFFFFFF)) .. lei2str(math.floor(msgLen/0x20000000))
md5_update(self, s)

assert(self.pos % 64 == 0)
return lei2str(self.a) .. lei2str(self.b) .. lei2str(self.c) .. lei2str(self.d)
end

----------------------------------------------------------------

function md5.new()
return { a = CONSTS[65], b = CONSTS[66], c = CONSTS[67], d = CONSTS[68],
pos = 0,
buf = '',
update = md5_update,
finish = md5_finish }
end

function md5.tohex(s)
return format("%08x%08x%08x%08x", str2bei(sub(s, 1, 4)), str2bei(sub(s, 5, 8)), str2bei(sub(s, 9, 12)), str2bei(sub(s, 13, 16)))
end

function md5.sum(s)
return md5.new():update(s):finish()
end

function md5.sumhexa(s)
return md5.tohex(md5.sum(s))
end

-- Usage: {{#invoke:Md5|sum|<string to compute hash sum of>}}
function p.sum(frame)
return md5.sum(frame.args[1])
end

return p

← Older revision	Revision as of 07:56, 8 April 2020
(No difference)

@@ Line 37: / Line 37: @@
 local bit_or, bit_and, bit_not, bit_xor, bit_rshift, bit_lshift
-local ok, bit = pcall(require, 'bit')
+local bit = require('bit32')
-  if ok then
+bit_not = bit.bnot
-    bit_not = bit.bnot
+local tobit = function(n)
-    local tobit = function(n)
+local normalize = function(f)
-      return n <= 0x7fffffff and n or -(bit_not(n) + 1)
+  return function(a,b) return tobit(f(tobit(a), tobit(b))) end
-    end
+end
-    bit_or, bit_and, bit_xor = normalize(bit.bor), normalize(bit.band), normalize(bit.bxor)
+bit_or, bit_and, bit_xor = normalize(bit.bor), normalize(bit.band), normalize(bit.bxor)
-    bit_rshift, bit_lshift = normalize(bit.rshift), normalize(bit.lshift)
+bit_rshift, bit_lshift = normalize(bit.rshift), normalize(bit.lshift)
 -- convert little-endian 32-bit int to a 4-char string

← Older revision	Revision as of 07:45, 8 April 2020
(No difference)

@@ Line 1: / Line 1: @@
 -- Lua Module for calculating md5 hash sums
 -- Needed in order to get absolute file paths for hosted images from Lua modules.
 local md5 = {
    _VERSION     = "md5.lua 1.1.0",
@@ Line 397: / Line 396: @@
 end
--- Usage: {{#invoke:Md5|sum|<string to compute hash sum of>}}
+return md5

← Older revision	Revision as of 07:41, 8 April 2020
(No difference)