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local String = require("string");
local Bit = require("lockbox.util.bit");
local XOR = Bit.bxor;
local Array = {};
Array.size = function(array)
return #array;
end
Array.fromString = function(string)
local bytes = {};
local i=1;
local byte = String.byte(string,i);
while byte ~= nil do
bytes[i] = byte;
i = i + 1;
byte = String.byte(string,i);
end
return bytes;
end
Array.toString = function(bytes)
local chars = {};
local i=1;
local byte = bytes[i];
while byte ~= nil do
chars[i] = String.char(byte);
i = i+1;
byte = bytes[i];
end
return table.concat(chars,"");
end
Array.fromStream = function(stream)
local array = {};
local i=1;
local byte = stream();
while byte ~= nil do
array[i] = byte;
i = i+1;
byte = stream();
end
return array;
end
Array.readFromQueue = function(queue,size)
local array = {};
for i=1,size do
array[i] = queue.pop();
end
return array;
end
Array.writeToQueue = function(queue,array)
local size = Array.size(array);
for i=1,size do
queue.push(array[i]);
end
end
Array.toStream = function(array)
local queue = Queue();
local i=1;
local byte = array[i];
while byte ~= nil do
queue.push(byte);
i=i+1;
byte = array[i];
end
return queue.pop;
end
local fromHexTable = {};
for i=0,255 do
fromHexTable[String.format("%02X",i)]=i;
fromHexTable[String.format("%02x",i)]=i;
end
Array.fromHex = function(hex)
local array = {};
for i=1,String.len(hex)/2 do
local h = String.sub(hex,i*2-1,i*2);
array[i] = fromHexTable[h];
end
return array;
end
local toHexTable = {};
for i=0,255 do
toHexTable[i]=String.format("%02X",i);
end
Array.toHex = function(array)
local hex = {};
local i = 1;
local byte = array[i];
while byte ~= nil do
hex[i] = toHexTable[byte];
i=i+1;
byte = array[i];
end
return table.concat(hex,"");
end
Array.concat = function(a,b)
local concat = {};
local out=1;
local i=1;
local byte = a[i];
while byte ~= nil do
concat[out] = byte;
i = i + 1;
out = out + 1;
byte = a[i];
end
local i=1;
local byte = b[i];
while byte ~= nil do
concat[out] = byte;
i = i + 1;
out = out + 1;
byte = b[i];
end
return concat;
end
Array.truncate = function(a,newSize)
local x = {};
for i=1,newSize do
x[i]=a[i];
end
return x;
end
Array.XOR = function(a,b)
local x = {};
for k,v in pairs(a) do
x[k] = XOR(v,b[k]);
end
return x;
end
Array.substitute = function(input,sbox)
local out = {};
for k,v in pairs(input) do
out[k] = sbox[v];
end
return out;
end
Array.permute = function(input,pbox)
local out = {};
for k,v in pairs(pbox) do
out[k] = input[v];
end
return out;
end
Array.copy = function(input)
local out = {};
for k,v in pairs(input) do
out[k] = v;
end
return out;
end
Array.slice = function(input,start,stop)
local out = {};
for i=start,stop do
out[i-start+1] = input[i];
end
return out;
end
return Array;
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