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345 lines (343 loc) · 14 KB
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Copy pathdecode.src
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345 lines (343 loc) · 14 KB
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AES128 = function(choice, key, text)
if typeof(key) != "string" then return null
if key.len != 16 then return null
if typeof(text) != "string" then return null
if typeof(choice) != "string" then return null
byte_key = [0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0]
for i in key.indexes
byte_key[i] = key[i].code
end for
key = byte_key[0:]
Sbox = []
Sbox=Sbox+[99,124,119,123,242,107,111,197,48,1,103,43,254,215,171,118,202,130,201,125,250,89,71,240,173,212,162,175,156,164,114,192,183,253,147,38]
Sbox=Sbox+[54,63,247,204,52,165,229,241,113,216,49,21,4,199,35,195,24,150,5,154,7,18,128,226,235,39,178,117,9,131,44,26,27,110,90,160,82,59,214,179]
Sbox=Sbox+[41,227,47,132,83,209,0,237,32,252,177,91,106,203,190,57,74,76,88,207,208,239,170,251,67,77,51,133,69,249,2,127,80,60,159,168,81,163,64]
Sbox=Sbox+[143,146,157,56,245,188,182,218,33,16,255,243,210,205,12,19,236,95,151,68,23,196,167,126,61,100,93,25,115,96,129,79,220,34,42,144,136,70]
Sbox=Sbox+[238,184,20,222,94,11,219,224,50,58,10,73,6,36,92,194,211,172,98,145,149,228,121,231,200,55,109,141,213,78,169,108,86,244,234,101,122,174]
Sbox=Sbox+[8,186,120,37,46,28,166,180,198,232,221,116,31,75,189,139,138,112,62,181,102,72,3,246,14,97,53,87,185,134,193,29,158,225,248,152,17,105]
Sbox=Sbox+[217,142,148,155,30,135,233,206,85,40,223,140,161,137,13,191,230,66,104,65,153,45,15,176,84,187,22]
Rcon = [1, 2, 4, 8, 16, 32, 64, 128, 27, 54]
Mult2 = []
Mult2=Mult2+[0,2,4,6,8,10,12,14,16,18,20,22,24,26,28,30,32,34,36,38,40,42,44,46,48,50,52,54,56,58,60,62,64,66,68,70,72,74,76,78,80,82,84,86,88,90]
Mult2=Mult2+[92,94,96,98,100,102,104,106,108,110,112,114,116,118,120,122,124,126,128,130,132,134,136,138,140,142,144,146,148,150,152,154,156,158]
Mult2=Mult2+[160,162,164,166,168,170,172,174,176,178,180,182,184,186,188,190,192,194,196,198,200,202,204,206,208,210,212,214,216,218,220,222,224]
Mult2=Mult2+[226,228,230,232,234,236,238,240,242,244,246,248,250,252,254,27,25,31,29,19,17,23,21,11,9,15,13,3,1,7,5,59,57,63,61,51,49,55,53,43,41]
Mult2=Mult2+[47,45,35,33,39,37,91,89,95,93,83,81,87,85,75,73,79,77,67,65,71,69,123,121,127,125,115,113,119,117,107,105,111,109,99,97,103,101,155]
Mult2=Mult2+[153,159,157,147,145,151,149,139,137,143,141,131,129,135,133,187,185,191,189,179,177,183,181,171,169,175,173,163,161,167,165,219,217]
Mult2=Mult2+[223,221,211,209,215,213,203,201,207,205,195,193,199,197,251,249,255,253,243,241,247,245,235,233,239,237,227,225,231,229]
SubBytes = function(column)
column = column[0:]
for i in column.indexes
column[i] = Sbox[column[i]]
end for
return column
end function
WordXor = function(word1, word2)
result = [0, 0, 0, 0]
for i in result.indexes
result[i] = bitwise("^", word1[i], word2[i])
end for
return result
end function
AddRoundKey = function(state, key, roundNum)
roundKey = key[roundNum*4:roundNum*4+4]
return [WordXor(state[0], roundKey[0]), WordXor(state[1], roundKey[1]), WordXor(state[2], roundKey[2]), WordXor(state[3], roundKey[3])]
end function
ExpandKey = function(key)
W = [key[0:4], key[4:8], key[8:12], key[12:16]]
for i in range(4, 40, 4)
W = W + [[], [], [], []]
W[i] = W[i-1][1:] + [W[i-1][0]]
W[i] = SubBytes(W[i])
W[i] = WordXor(W[i-4], W[i])
W[i][0] = bitwise("^", Rcon[i/4-1], W[i][0])
for j in range(i+1, i+3)
W[j] = WordXor(W[j-4], W[j-1])
end for
end for
return W
end function
aesEncrypt = function(key, block)
Mult2 = @Mult2
key = key[0:]
State = block[0:]
ShiftRows = function(state)
state = state[0:]
tmp = state[0][1]
state[0][1] = state[1][1]
state[1][1] = state[2][1]
state[2][1] = state[3][1]
state[3][1] = tmp
for i in range(1)
tmp = state[0][2]
state[0][2] = state[1][2]
state[1][2] = state[2][2]
state[2][2] = state[3][2]
state[3][2] = tmp
end for
tmp = state[3][3]
state[3][3] = state[2][3]
state[2][3] = state[1][3]
state[1][3] = state[0][3]
state[0][3] = tmp
return state
end function
matrix = [[2, 3, 1, 1], [1, 2, 3, 1], [1, 1, 2, 3], [3, 1, 1, 2]]
MixColumns = function(state)
state = state[0:]
for column in state.indexes
endcolumn = [0, 0, 0, 0]
for i in matrix.indexes
tmp = state[column][0:]
for j in matrix[i].indexes
if matrix[i][j] == 1 then continue
tmp[j] = Mult2[state[column][j]]
if matrix[i][j] != 3 then continue
tmp[j] = bitwise("^", tmp[j], state[column][j])
end for
endcolumn[i] = bitwise("^", bitwise("^", bitwise("^", tmp[0], tmp[1]), tmp[2]), tmp[3])
end for
state[column] = endcolumn[0:]
end for
return state
end function
State = AddRoundKey(State, key, 0)
for round in range(1, 9)
State = [SubBytes(State[0]), SubBytes(State[1]), SubBytes(State[2]), SubBytes(State[3])]
State = ShiftRows(State)
State = MixColumns(State)
State = AddRoundKey(State, key, round)
end for
State = [SubBytes(State[0]), SubBytes(State[1]), SubBytes(State[2]), SubBytes(State[3])]
State = ShiftRows(State)
State = AddRoundKey(State, key, 10)
return State
end function
aesDecrypt = function(key, block)
Mult2 = @Mult2
Sbox = @Sbox
key = key[0:]
State = block[0:]
InvShiftRows = function(state)
state = state[0:]
tmp = state[3][1]
state[3][1] = state[2][1]
state[2][1] = state[1][1]
state[1][1] = state[0][1]
state[0][1] = tmp
for i in range(1)
tmp = state[3][2]
state[3][2] = state[2][2]
state[2][2] = state[1][2]
state[1][2] = state[0][2]
state[0][2] = tmp
end for
tmp = state[0][3]
state[0][3] = state[1][3]
state[1][3] = state[2][3]
state[2][3] = state[3][3]
state[3][3] = tmp
return state
end function
InvSubBytes = function(column)
column = column[0:]
for i in column.indexes
column[i] = Sbox.indexOf(column[i])
end for
return column
end function
matrix = [[14, 11, 13, 9], [9, 14, 11, 13], [13, 9, 14, 11], [11, 13, 9, 14]]
InvMixColumns = function(state)
state = state[0:]
for column in state.indexes
endcolumn = [0, 0, 0, 0]
for i in matrix.indexes
tmp = state[column][0:]
for j in matrix[i].indexes
if matrix[i][j] == 9 then
tmp[j] = bitwise("^", Mult2[Mult2[Mult2[state[column][j]]]], state[column][j])
else if matrix[i][j] == 11 then
tmp[j] = bitwise("^", Mult2[bitwise("^", Mult2[Mult2[state[column][j]]], state[column][j])], state[column][j])
else if matrix[i][j] == 13 then
tmp[j] = bitwise("^", Mult2[Mult2[bitwise("^", Mult2[state[column][j]], state[column][j])]], state[column][j])
else
tmp[j] = Mult2[bitwise("^", Mult2[bitwise("^", Mult2[state[column][j]], state[column][j])], state[column][j])]
end if
end for
endcolumn[i] = bitwise("^", bitwise("^", bitwise("^", tmp[0], tmp[1]), tmp[2]), tmp[3])
end for
state[column] = endcolumn[0:]
end for
return state
end function
State = AddRoundKey(State, key, 10)
for round in range(9, 1)
State = InvShiftRows(State)
State = [InvSubBytes(State[0]), InvSubBytes(State[1]), InvSubBytes(State[2]), InvSubBytes(State[3])]
State = AddRoundKey(State, key, round)
State = InvMixColumns(State)
end for
State = InvShiftRows(State)
State = [InvSubBytes(State[0]), InvSubBytes(State[1]), InvSubBytes(State[2]), InvSubBytes(State[3])]
State = AddRoundKey(State, key, 0)
return State
end function
IV = []
for byte in key
IV = IV + [floor(rnd(byte)*256)]
end for
key = ExpandKey(key)
b64Table = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"
if choice == "encrypt" then
Blocks = [[]]
b=0
for char in text
Blocks[b] = Blocks[b] + [code(char)]
if Blocks[b].len == 16 then
Blocks = Blocks + [[]]
b=b+1
end if
end for
padNum = 16 - Blocks[-1].len
for i in range(padNum-1)
Blocks[-1] = Blocks[-1] + [padNum]
end for
for i in IV.indexes
Blocks[0][i] = bitwise("^", Blocks[0][i], IV[i])
end for
for i in Blocks.indexes
Blocks[i] = [Blocks[i][0:4], Blocks[i][4:8], Blocks[i][8:12], Blocks[i][12:16]]
end for
Blocks[0] = aesEncrypt(key, Blocks[0])
if Blocks.len > 1 then
for i in range(1, Blocks.len-1)
for column in Blocks[i].indexes
for byte in Blocks[i][column].indexes
Blocks[i][column][byte] = bitwise("^", Blocks[i][column][byte], Blocks[i-1][column][byte])
end for
end for
Blocks[i] = aesEncrypt(key, Blocks[i])
end for
end if
arr = []
for Block in Blocks
for column in Block
for byte in column
arr = arr + [byte]
end for
end for
end for
output = ""
for i in range(0, arr.len-1, 3)
buffer = arr[i]*65536
if arr.hasIndex(i+1) then
buffer = buffer+arr[i+1]*256
if arr.hasIndex(i+2) then buffer = buffer+arr[i+2]
end if
if arr.hasIndex(i+2) then
for j in range(3)
output = output + b64Table[floor(buffer/64^j)%64]
end for
else
if arr.hasIndex(i+1) then
for j in range(3,1)
output = output + b64Table[floor(buffer/64^j)%64]
end for
else
for j in range(3,2)
output = output + b64Table[floor(buffer/64^j)%64]
end for
end if
end if
end for
return output
end if
if choice == "decrypt" then
if text.len % 4 == 1 then return null
s_arr = text.values
for i in s_arr.indexes
tmp = b64Table.indexOf(s_arr[i])
if tmp == null then return null
s_arr[i] = tmp
end for
b_arr = []
for i in range(0, s_arr.len-1, 4)
buffer = s_arr[i]*262144
if s_arr.hasIndex(i+1) then
buffer = buffer+s_arr[i+1]*4096
if s_arr.hasIndex(i+2) then
buffer = buffer+s_arr[i+2]*64
if s_arr.hasIndex(i+3) then buffer = buffer+s_arr[i+3]
end if
end if
if s_arr.hasIndex(i+3) then
for j in range(2)
b_arr = b_arr + [floor(buffer/256^j)%256]
end for
else
if s_arr.hasIndex(i+2) then
for j in range(2,1)
b_arr = b_arr + [floor(buffer/256^j)%256]
end for
else
b_arr = b_arr + [floor(buffer/65526)%256]
end if
end if
end for
Blocks = [[]]
b=0
while b_arr.len > 0
if Blocks[b].len == 16 then
Blocks = Blocks + [[]]
b=b+1
end if
Blocks[b] = Blocks[b] + [b_arr.pull]
end while
if Blocks[-1].len != 16 then return null
for i in Blocks.indexes
Blocks[i] = [Blocks[i][0:4], Blocks[i][4:8], Blocks[i][8:12], Blocks[i][12:16]]
end for
NewBlocks = Blocks[0:]
for i in Blocks.indexes
NewBlocks[i] = aesDecrypt(key, Blocks[i])
end for
for column in Blocks[0].indexes
for byte in Blocks[i][column].indexes
NewBlocks[0][column][byte] = bitwise("^", NewBlocks[0][column][byte], IV[column*4+byte])
end for
end for
if Blocks.len > 1 then
for i in range(1, Blocks.len-1)
for column in Blocks[i].indexes
for byte in Blocks[i][column].indexes
NewBlocks[i][column][byte] = bitwise("^", NewBlocks[i][column][byte], Blocks[i-1][column][byte])
end for
end for
end for
end if
Blocks = NewBlocks[0:]
arr = []
for Block in Blocks
for column in Block
for byte in column
arr = arr + [byte]
end for
end for
end for
if arr[-1] > 16 or arr[-1] == 0 then return null
for i in range(arr[-1]-1)
arr.pop
end for
output = ""
for byte in arr
output = output + char(byte)
end for
return output
end if
return null
end function
Encryption_key = "1234567890123456" //Encryption key here max 16 characters
Decode = function(password)
r = AES128("decrypt", Encryption_key, password)
return str(r)
end function
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