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| 1 | -- | |
| 2 | -- Adaptation of the Secure Hashing Algorithm (SHA-244/256) | |
| 3 | -- Found Here: http://lua-users.org/wiki/SecureHashAlgorithm | |
| 4 | -- | |
| 5 | -- Using an adapted version of the bit library | |
| 6 | -- Found Here: https://bitbucket.org/Boolsheet/bslf/src/1ee664885805/bit.lua | |
| 7 | -- | |
| 8 | -- Adapted into a single function by GravityScore | |
| 9 | -- | |
| 10 | - | local MOD = 2^32 |
| 10 | + | |
| 11 | - | local MODM = MOD-1 |
| 11 | + | |
| 12 | local function band(int1, int2, int3, ...) | |
| 13 | - | local function memoize(f) |
| 13 | + | local ret = |
| 14 | - | local mt = {}
|
| 14 | + | ((int1%0x00000002>=0x00000001 and int2%0x00000002>=0x00000001 and 0x00000001) or 0)+ |
| 15 | - | local t = setmetatable({}, mt)
|
| 15 | + | ((int1%0x00000004>=0x00000002 and int2%0x00000004>=0x00000002 and 0x00000002) or 0)+ |
| 16 | - | function mt:__index(k) |
| 16 | + | ((int1%0x00000008>=0x00000004 and int2%0x00000008>=0x00000004 and 0x00000004) or 0)+ |
| 17 | - | local v = f(k) |
| 17 | + | ((int1%0x00000010>=0x00000008 and int2%0x00000010>=0x00000008 and 0x00000008) or 0)+ |
| 18 | - | t[k] = v |
| 18 | + | ((int1%0x00000020>=0x00000010 and int2%0x00000020>=0x00000010 and 0x00000010) or 0)+ |
| 19 | - | return v |
| 19 | + | ((int1%0x00000040>=0x00000020 and int2%0x00000040>=0x00000020 and 0x00000020) or 0)+ |
| 20 | ((int1%0x00000080>=0x00000040 and int2%0x00000080>=0x00000040 and 0x00000040) or 0)+ | |
| 21 | - | return t |
| 21 | + | ((int1%0x00000100>=0x00000080 and int2%0x00000100>=0x00000080 and 0x00000080) or 0)+ |
| 22 | - | end |
| 22 | + | ((int1%0x00000200>=0x00000100 and int2%0x00000200>=0x00000100 and 0x00000100) or 0)+ |
| 23 | ((int1%0x00000400>=0x00000200 and int2%0x00000400>=0x00000200 and 0x00000200) or 0)+ | |
| 24 | - | local function make_bitop_uncached(t, m) |
| 24 | + | ((int1%0x00000800>=0x00000400 and int2%0x00000800>=0x00000400 and 0x00000400) or 0)+ |
| 25 | - | local function bitop(a, b) |
| 25 | + | ((int1%0x00001000>=0x00000800 and int2%0x00001000>=0x00000800 and 0x00000800) or 0)+ |
| 26 | - | local res,p = 0,1 |
| 26 | + | ((int1%0x00002000>=0x00001000 and int2%0x00002000>=0x00001000 and 0x00001000) or 0)+ |
| 27 | - | while a ~= 0 and b ~= 0 do |
| 27 | + | ((int1%0x00004000>=0x00002000 and int2%0x00004000>=0x00002000 and 0x00002000) or 0)+ |
| 28 | - | local am, bm = a % m, b % m |
| 28 | + | ((int1%0x00008000>=0x00004000 and int2%0x00008000>=0x00004000 and 0x00004000) or 0)+ |
| 29 | - | res = res + t[am][bm] * p |
| 29 | + | ((int1%0x00010000>=0x00008000 and int2%0x00010000>=0x00008000 and 0x00008000) or 0)+ |
| 30 | - | a = (a - am) / m |
| 30 | + | ((int1%0x00020000>=0x00010000 and int2%0x00020000>=0x00010000 and 0x00010000) or 0)+ |
| 31 | - | b = (b - bm) / m |
| 31 | + | ((int1%0x00040000>=0x00020000 and int2%0x00040000>=0x00020000 and 0x00020000) or 0)+ |
| 32 | - | p = p*m |
| 32 | + | ((int1%0x00080000>=0x00040000 and int2%0x00080000>=0x00040000 and 0x00040000) or 0)+ |
| 33 | ((int1%0x00100000>=0x00080000 and int2%0x00100000>=0x00080000 and 0x00080000) or 0)+ | |
| 34 | - | res = res + (a + b) * p |
| 34 | + | ((int1%0x00200000>=0x00100000 and int2%0x00200000>=0x00100000 and 0x00100000) or 0)+ |
| 35 | - | return res |
| 35 | + | ((int1%0x00400000>=0x00200000 and int2%0x00400000>=0x00200000 and 0x00200000) or 0)+ |
| 36 | ((int1%0x00800000>=0x00400000 and int2%0x00800000>=0x00400000 and 0x00400000) or 0)+ | |
| 37 | - | return bitop |
| 37 | + | ((int1%0x01000000>=0x00800000 and int2%0x01000000>=0x00800000 and 0x00800000) or 0)+ |
| 38 | - | end |
| 38 | + | ((int1%0x02000000>=0x01000000 and int2%0x02000000>=0x01000000 and 0x01000000) or 0)+ |
| 39 | ((int1%0x04000000>=0x02000000 and int2%0x04000000>=0x02000000 and 0x02000000) or 0)+ | |
| 40 | - | local function make_bitop(t) |
| 40 | + | ((int1%0x08000000>=0x04000000 and int2%0x08000000>=0x04000000 and 0x04000000) or 0)+ |
| 41 | - | local op1 = make_bitop_uncached(t,2^1) |
| 41 | + | ((int1%0x10000000>=0x08000000 and int2%0x10000000>=0x08000000 and 0x08000000) or 0)+ |
| 42 | - | local op2 = memoize(function(a) return memoize(function(b) return op1(a, b) end) end) |
| 42 | + | ((int1%0x20000000>=0x10000000 and int2%0x20000000>=0x10000000 and 0x10000000) or 0)+ |
| 43 | - | return make_bitop_uncached(op2, 2 ^ (t.n or 1)) |
| 43 | + | ((int1%0x40000000>=0x20000000 and int2%0x40000000>=0x20000000 and 0x20000000) or 0)+ |
| 44 | - | end |
| 44 | + | ((int1%0x80000000>=0x40000000 and int2%0x80000000>=0x40000000 and 0x40000000) or 0)+ |
| 45 | ((int1>=0x80000000 and int2>=0x80000000 and 0x80000000) or 0) | |
| 46 | - | local bxor1 = make_bitop({[0] = {[0] = 0,[1] = 1}, [1] = {[0] = 1, [1] = 0}, n = 4})
|
| 46 | + | |
| 47 | return (int3 and band(ret, int3, ...)) or ret | |
| 48 | - | local function bxor(a, b, c, ...) |
| 48 | + | |
| 49 | - | local z = nil |
| 49 | + | |
| 50 | - | if b then |
| 50 | + | local function bxor(int1, int2, int3, ...) |
| 51 | - | a = a % MOD |
| 51 | + | local ret = |
| 52 | - | b = b % MOD |
| 52 | + | ((int1%0x00000002>=0x00000001 ~= (int2%0x00000002>=0x00000001) and 0x00000001) or 0)+ |
| 53 | - | z = bxor1(a, b) |
| 53 | + | ((int1%0x00000004>=0x00000002 ~= (int2%0x00000004>=0x00000002) and 0x00000002) or 0)+ |
| 54 | - | if c then z = bxor(z, c, ...) end |
| 54 | + | ((int1%0x00000008>=0x00000004 ~= (int2%0x00000008>=0x00000004) and 0x00000004) or 0)+ |
| 55 | - | return z |
| 55 | + | ((int1%0x00000010>=0x00000008 ~= (int2%0x00000010>=0x00000008) and 0x00000008) or 0)+ |
| 56 | - | elseif a then return a % MOD |
| 56 | + | ((int1%0x00000020>=0x00000010 ~= (int2%0x00000020>=0x00000010) and 0x00000010) or 0)+ |
| 57 | - | else return 0 end |
| 57 | + | ((int1%0x00000040>=0x00000020 ~= (int2%0x00000040>=0x00000020) and 0x00000020) or 0)+ |
| 58 | - | end |
| 58 | + | ((int1%0x00000080>=0x00000040 ~= (int2%0x00000080>=0x00000040) and 0x00000040) or 0)+ |
| 59 | ((int1%0x00000100>=0x00000080 ~= (int2%0x00000100>=0x00000080) and 0x00000080) or 0)+ | |
| 60 | - | local function band(a, b, c, ...) |
| 60 | + | ((int1%0x00000200>=0x00000100 ~= (int2%0x00000200>=0x00000100) and 0x00000100) or 0)+ |
| 61 | - | local z |
| 61 | + | ((int1%0x00000400>=0x00000200 ~= (int2%0x00000400>=0x00000200) and 0x00000200) or 0)+ |
| 62 | - | if b then |
| 62 | + | ((int1%0x00000800>=0x00000400 ~= (int2%0x00000800>=0x00000400) and 0x00000400) or 0)+ |
| 63 | - | a = a % MOD |
| 63 | + | ((int1%0x00001000>=0x00000800 ~= (int2%0x00001000>=0x00000800) and 0x00000800) or 0)+ |
| 64 | - | b = b % MOD |
| 64 | + | ((int1%0x00002000>=0x00001000 ~= (int2%0x00002000>=0x00001000) and 0x00001000) or 0)+ |
| 65 | - | z = ((a + b) - bxor1(a,b)) / 2 |
| 65 | + | ((int1%0x00004000>=0x00002000 ~= (int2%0x00004000>=0x00002000) and 0x00002000) or 0)+ |
| 66 | - | if c then z = bit32_band(z, c, ...) end |
| 66 | + | ((int1%0x00008000>=0x00004000 ~= (int2%0x00008000>=0x00004000) and 0x00004000) or 0)+ |
| 67 | - | return z |
| 67 | + | ((int1%0x00010000>=0x00008000 ~= (int2%0x00010000>=0x00008000) and 0x00008000) or 0)+ |
| 68 | - | elseif a then return a % MOD |
| 68 | + | ((int1%0x00020000>=0x00010000 ~= (int2%0x00020000>=0x00010000) and 0x00010000) or 0)+ |
| 69 | - | else return MODM end |
| 69 | + | ((int1%0x00040000>=0x00020000 ~= (int2%0x00040000>=0x00020000) and 0x00020000) or 0)+ |
| 70 | - | end |
| 70 | + | ((int1%0x00080000>=0x00040000 ~= (int2%0x00080000>=0x00040000) and 0x00040000) or 0)+ |
| 71 | ((int1%0x00100000>=0x00080000 ~= (int2%0x00100000>=0x00080000) and 0x00080000) or 0)+ | |
| 72 | - | local function bnot(x) return (-1 - x) % MOD end |
| 72 | + | ((int1%0x00200000>=0x00100000 ~= (int2%0x00200000>=0x00100000) and 0x00100000) or 0)+ |
| 73 | ((int1%0x00400000>=0x00200000 ~= (int2%0x00400000>=0x00200000) and 0x00200000) or 0)+ | |
| 74 | - | local function rshift1(a, disp) |
| 74 | + | ((int1%0x00800000>=0x00400000 ~= (int2%0x00800000>=0x00400000) and 0x00400000) or 0)+ |
| 75 | - | if disp < 0 then return lshift(a,-disp) end |
| 75 | + | ((int1%0x01000000>=0x00800000 ~= (int2%0x01000000>=0x00800000) and 0x00800000) or 0)+ |
| 76 | - | return math.floor(a % 2 ^ 32 / 2 ^ disp) |
| 76 | + | ((int1%0x02000000>=0x01000000 ~= (int2%0x02000000>=0x01000000) and 0x01000000) or 0)+ |
| 77 | - | end |
| 77 | + | ((int1%0x04000000>=0x02000000 ~= (int2%0x04000000>=0x02000000) and 0x02000000) or 0)+ |
| 78 | ((int1%0x08000000>=0x04000000 ~= (int2%0x08000000>=0x04000000) and 0x04000000) or 0)+ | |
| 79 | - | local function rshift(x, disp) |
| 79 | + | ((int1%0x10000000>=0x08000000 ~= (int2%0x10000000>=0x08000000) and 0x08000000) or 0)+ |
| 80 | - | if disp > 31 or disp < -31 then return 0 end |
| 80 | + | ((int1%0x20000000>=0x10000000 ~= (int2%0x20000000>=0x10000000) and 0x10000000) or 0)+ |
| 81 | - | return rshift1(x % MOD, disp) |
| 81 | + | ((int1%0x40000000>=0x20000000 ~= (int2%0x40000000>=0x20000000) and 0x20000000) or 0)+ |
| 82 | - | end |
| 82 | + | ((int1%0x80000000>=0x40000000 ~= (int2%0x80000000>=0x40000000) and 0x40000000) or 0)+ |
| 83 | ((int1>=0x80000000 ~= (int2>=0x80000000) and 0x80000000) or 0) | |
| 84 | - | local function lshift(a, disp) |
| 84 | + | |
| 85 | - | if disp < 0 then return rshift(a,-disp) end |
| 85 | + | return (int3 and bxor(ret, int3, ...)) or ret |
| 86 | - | return (a * 2 ^ disp) % 2 ^ 32 |
| 86 | + | |
| 87 | - | end |
| 87 | + | |
| 88 | local function bnot(int) | |
| 89 | - | local function rrotate(x, disp) |
| 89 | + | return 4294967295 - int |
| 90 | - | x = x % MOD |
| 90 | + | |
| 91 | - | disp = disp % 32 |
| 91 | + | |
| 92 | - | local low = band(x, 2 ^ disp - 1) |
| 92 | + | local function rshift(int, by) |
| 93 | - | return rshift(x, disp) + lshift(low, 32 - disp) |
| 93 | + | local shifted = int / (2 ^ by) |
| 94 | - | end |
| 94 | + | return shifted - shifted % 1 |
| 95 | end | |
| 96 | - | local k = {
|
| 96 | + | |
| 97 | - | 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, |
| 97 | + | local function rrotate(int, by) |
| 98 | - | 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, |
| 98 | + | local shifted = int / (2 ^ by) |
| 99 | - | 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, |
| 99 | + | local fraction = shifted % 1 |
| 100 | - | 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, |
| 100 | + | return (shifted - fraction) + fraction * (2 ^ 32) |
| 101 | - | 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, |
| 101 | + | |
| 102 | - | 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, |
| 102 | + | |
| 103 | - | 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, |
| 103 | + | local k = {
|
| 104 | - | 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, |
| 104 | + | 0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5, |
| 105 | - | 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, |
| 105 | + | 0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5, |
| 106 | - | 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, |
| 106 | + | 0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3, |
| 107 | - | 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, |
| 107 | + | 0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174, |
| 108 | - | 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, |
| 108 | + | 0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc, |
| 109 | - | 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, |
| 109 | + | 0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da, |
| 110 | - | 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, |
| 110 | + | 0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7, |
| 111 | - | 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, |
| 111 | + | 0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967, |
| 112 | - | 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2, |
| 112 | + | 0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13, |
| 113 | - | } |
| 113 | + | 0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85, |
| 114 | 0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3, | |
| 115 | - | local function str2hexa(s) |
| 115 | + | 0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070, |
| 116 | - | return (string.gsub(s, ".", function(c) return string.format("%02x", string.byte(c)) end))
|
| 116 | + | 0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5, |
| 117 | - | end |
| 117 | + | 0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3, |
| 118 | 0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208, | |
| 119 | - | local function num2s(l, n) |
| 119 | + | 0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2, |
| 120 | - | local s = "" |
| 120 | + | } |
| 121 | - | for i = 1, n do |
| 121 | + | |
| 122 | - | local rem = l % 256 |
| 122 | + | local function str2hexa(s) |
| 123 | - | s = string.char(rem) .. s |
| 123 | + | local h = string.gsub(s, ".", function(c) |
| 124 | - | l = (l - rem) / 256 |
| 124 | + | return string.format("%02x", string.byte(c))
|
| 125 | end) | |
| 126 | - | return s |
| 126 | + | return h |
| 127 | - | end |
| 127 | + | |
| 128 | ||
| 129 | - | local function s232num(s, i) |
| 129 | + | local function num2s(l, n) |
| 130 | - | local n = 0 |
| 130 | + | local s = "" |
| 131 | - | for i = i, i + 3 do n = n*256 + string.byte(s, i) end |
| 131 | + | for i = 1, n do |
| 132 | - | return n |
| 132 | + | local rem = l % 256 |
| 133 | - | end |
| 133 | + | s = string.char(rem) .. s |
| 134 | l = (l - rem) / 256 | |
| 135 | - | local function preproc(msg, len) |
| 135 | + | |
| 136 | - | local extra = 64 - ((len + 9) % 64) |
| 136 | + | return s |
| 137 | - | len = num2s(8 * len, 8) |
| 137 | + | |
| 138 | - | msg = msg .. "\128" .. string.rep("\0", extra) .. len
|
| 138 | + | |
| 139 | - | assert(#msg % 64 == 0) |
| 139 | + | local function s232num(s, i) |
| 140 | - | return msg |
| 140 | + | local n = 0 |
| 141 | - | end |
| 141 | + | for i = i, i + 3 do n = n*256 + string.byte(s, i) end |
| 142 | return n | |
| 143 | - | local function initH256(H) |
| 143 | + | |
| 144 | - | H[1] = 0x6a09e667 |
| 144 | + | |
| 145 | - | H[2] = 0xbb67ae85 |
| 145 | + | local function preproc(msg, len) |
| 146 | - | H[3] = 0x3c6ef372 |
| 146 | + | local extra = 64 - ((len + 1 + 8) % 64) |
| 147 | - | H[4] = 0xa54ff53a |
| 147 | + | len = num2s(8 * len, 8) |
| 148 | - | H[5] = 0x510e527f |
| 148 | + | msg = msg .. "\128" .. string.rep("\0", extra) .. len
|
| 149 | - | H[6] = 0x9b05688c |
| 149 | + | return msg |
| 150 | - | H[7] = 0x1f83d9ab |
| 150 | + | |
| 151 | - | H[8] = 0x5be0cd19 |
| 151 | + | |
| 152 | - | return H |
| 152 | + | local function initH256(H) |
| 153 | - | end |
| 153 | + | H[1] = 0x6a09e667 |
| 154 | H[2] = 0xbb67ae85 | |
| 155 | - | local function digestblock(msg, i, H) |
| 155 | + | H[3] = 0x3c6ef372 |
| 156 | - | local w = {}
|
| 156 | + | H[4] = 0xa54ff53a |
| 157 | - | for j = 1, 16 do w[j] = s232num(msg, i + (j - 1)*4) end |
| 157 | + | H[5] = 0x510e527f |
| 158 | - | for j = 17, 64 do |
| 158 | + | H[6] = 0x9b05688c |
| 159 | - | local v = w[j - 15] |
| 159 | + | H[7] = 0x1f83d9ab |
| 160 | - | local s0 = bxor(rrotate(v, 7), rrotate(v, 18), rshift(v, 3)) |
| 160 | + | H[8] = 0x5be0cd19 |
| 161 | - | v = w[j - 2] |
| 161 | + | return H |
| 162 | - | w[j] = w[j - 16] + s0 + w[j - 7] + bxor(rrotate(v, 17), rrotate(v, 19), rshift(v, 10)) |
| 162 | + | |
| 163 | ||
| 164 | local function digestblock(msg, i, H) | |
| 165 | - | local a, b, c, d, e, f, g, h = H[1], H[2], H[3], H[4], H[5], H[6], H[7], H[8] |
| 165 | + | local w = {}
|
| 166 | - | for i = 1, 64 do |
| 166 | + | for j = 1, 16 do w[j] = s232num(msg, i + (j - 1) * 4) end |
| 167 | - | local s0 = bxor(rrotate(a, 2), rrotate(a, 13), rrotate(a, 22)) |
| 167 | + | for j = 17, 64 do |
| 168 | - | local maj = bxor(band(a, b), band(a, c), band(b, c)) |
| 168 | + | local v = w[j - 15] |
| 169 | - | local t2 = s0 + maj |
| 169 | + | local s0 = bxor(rrotate(v, 7), rrotate(v, 18), rshift(v, 3)) |
| 170 | - | local s1 = bxor(rrotate(e, 6), rrotate(e, 11), rrotate(e, 25)) |
| 170 | + | v = w[j - 2] |
| 171 | - | local ch = bxor (band(e, f), band(bnot(e), g)) |
| 171 | + | local s1 = bxor(rrotate(v, 17), rrotate(v, 19), rshift(v, 10)) |
| 172 | - | local t1 = h + s1 + ch + k[i] + w[i] |
| 172 | + | w[j] = w[j - 16] + s0 + w[j - 7] + s1 |
| 173 | - | h, g, f, e, d, c, b, a = g, f, e, d + t1, c, b, a, t1 + t2 |
| 173 | + | |
| 174 | ||
| 175 | local a, b, c, d, e, f, g, h = H[1], H[2], H[3], H[4], H[5], H[6], H[7], H[8] | |
| 176 | - | H[1] = band(H[1] + a) |
| 176 | + | for i = 1, 64 do |
| 177 | - | H[2] = band(H[2] + b) |
| 177 | + | local s0 = bxor(rrotate(a, 2), rrotate(a, 13), rrotate(a, 22)) |
| 178 | - | H[3] = band(H[3] + c) |
| 178 | + | local maj = bxor(band(a, b), band(a, c), band(b, c)) |
| 179 | - | H[4] = band(H[4] + d) |
| 179 | + | local t2 = s0 + maj |
| 180 | - | H[5] = band(H[5] + e) |
| 180 | + | local s1 = bxor(rrotate(e, 6), rrotate(e, 11), rrotate(e, 25)) |
| 181 | - | H[6] = band(H[6] + f) |
| 181 | + | local ch = bxor (band(e, f), band(bnot(e), g)) |
| 182 | - | H[7] = band(H[7] + g) |
| 182 | + | local t1 = h + s1 + ch + k[i] + w[i] |
| 183 | - | H[8] = band(H[8] + h) |
| 183 | + | h, g, f, e, d, c, b, a = g, f, e, d + t1, c, b, a, t1 + t2 |
| 184 | - | end |
| 184 | + | |
| 185 | ||
| 186 | H[1] = band(H[1], a) | |
| 187 | H[2] = band(H[2], b) | |
| 188 | H[3] = band(H[3], c) | |
| 189 | H[4] = band(H[4], d) | |
| 190 | H[5] = band(H[5], e) | |
| 191 | H[6] = band(H[6], f) | |
| 192 | H[7] = band(H[7], g) | |
| 193 | H[8] = band(H[8], h) | |
| 194 | end | |
| 195 | ||
| 196 | msg = preproc(msg, #msg) | |
| 197 | local H = initH256({})
| |
| 198 | for i = 1, #msg, 64 do digestblock(msg, i, H) end | |
| 199 | return str2hexa(num2s(H[1], 4) .. num2s(H[2], 4) .. num2s(H[3], 4) .. num2s(H[4], 4) .. | |
| 200 | num2s(H[5], 4) .. num2s(H[6], 4) .. num2s(H[7], 4) .. num2s(H[8], 4)) | |
| 201 | end |