lua的MD5实现方法：
local md5 = {
_VERSION = "md5.lua 1.1.0",
_DESCRIPTION = "MD5 computation in Lua (5.1-3, LuaJIT)",
_URL = "https://github.com/kikito/md5.lua"
}
-- 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 [email protected]
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
return md5TestMD5.lua
local md5 = require('md5')
local inputvalue="admin"
local y = md5.sumhexa(inputvalue)
print(inputvalue.." is encrypted by MD5 ----------------------> "..y)
inputvalue="www.hackyin.com"
y = md5.sumhexa(inputvalue)
print(inputvalue.." is encrypted by MD5 ----------------------> "..y)
inputvalue="hackyin"
y = md5.sumhexa(inputvalue)
print(inputvalue.." is encrypted by MD5 ----------------------> "..y)TestTime.lua
function FormatTime(intputTime)
local time=""
if intputTime<3600 then
local m = math.modf(intputTime/60)
local s = math.fmod(intputTime, 60)
time= string.format("%dm %ds", m, s)
elseif intputTime>3600 and intputTime <86400 then
local h = math.modf(intputTime/3600)
local m = math.modf(math.fmod(intputTime, 3600)/60)
time= string.format("%dh %dm", h, m)
else
local d = math.modf(intputTime/86400)
local h = math.modf(math.fmod(intputTime, 86400)/3600)
time= string.format("%dd %dh", d, h)
end
return time
end
function SendItem:FormatTime(intputTime)
if type(intputTime)=="number" and intputTime > 0 then
if intputTime < 3600 then
local m = math.modf(intputTime/60)
local s = math.fmod(intputTime, 60)
return string.format("%dm %ds", mins, seconds)
elseif intputTime > 3600 and intputTime < 86400 then
local h = math.modf(intputTime/3600)
local m = math.modf(math.fmod(intputTime, 3600)/60)
return string.format("%dh %dm", h, m)
else
local d = math.modf(intputTime/86400)
local h = math.modf(math.fmod(intputTime, 86400)/3600)
return string.format("%dd %dh", d, h)
end
end
return nil
end
print("---------小于1小时 --------------------> "..FormatTime(3500))
local num=3500+3600*3
print("---------小于1天，大于小时 --------------------> "..FormatTime(num))
num=3500+3600*30
print("---------大于1天 小时 --------------------> "..FormatTime(num))
--HH:MM:SS
function FormatTimeToHMS(intputTime)
local h = math.floor(intputTime / 3600)
local m = math.floor((intputTime % 3600) / 60)
local s = math.floor((intputTime % 3600) % 60)
return string.format("%dh %dm %ds", h, m,s)
end
print("-----------HH:MM:SS --------------------> "..FormatTimeToHMS(86732))
----MM:SS
function FormatTimeToMS(intputTime)
local m = math.modf(intputTime/60)
local s = math.fmod(intputTime, 60)
return string.format("%dm %ds", m,s)
end
print("-----------MM:SS --------------------> "..FormatTimeToMS(3434))