require("lockbox").insecure();

local Bit = require("lockbox.util.bit");
local String = require("string");
local Math = require("math");
local Queue = require("lockbox.util.queue");

local AND = Bit.band;
local OR  = Bit.bor;
local NOT = Bit.bnot;
local XOR = Bit.bxor;
local LROT = Bit.lrotate;
local RROT = Bit.rrotate;
local LSHIFT = Bit.lshift;
local RSHIFT = Bit.rshift;

--RIPEMD160 is little-endian
local bytes2word = function(b0,b1,b2,b3)
	local i = b3; i = LSHIFT(i,8);
	i = OR(i,b2); i = LSHIFT(i,8);
	i = OR(i,b1); i = LSHIFT(i,8);
	i = OR(i,b0);
	return i;
end

local word2bytes = function(word)
	local b0,b1,b2,b3;
	b0 = AND(word,0xFF); word = RSHIFT(word,8);
	b1 = AND(word,0xFF); word = RSHIFT(word,8);
	b2 = AND(word,0xFF); word = RSHIFT(word,8);
	b3 = AND(word,0xFF);
	return b0,b1,b2,b3;
end

local bytes2dword = function(b0,b1,b2,b3,b4,b5,b6,b7)
	local i = bytes2word(b0,b1,b2,b3);
	local j = bytes2word(b4,b5,b6,b7);
	return (j*0x100000000)+i;
end

local dword2bytes = function(i)
	local b4,b5,b6,b7 = word2bytes(Math.floor(i/0x100000000));
	local b0,b1,b2,b3 = word2bytes(i);
	return b0,b1,b2,b3,b4,b5,b6,b7;
end

local F = function(x,y,z) return XOR(x, XOR(y,z)); end
local G = function(x,y,z) return OR(AND(x,y), AND(NOT(x),z)); end
local H = function(x,y,z) return XOR(OR(x,NOT(y)),z); end
local I = function(x,y,z) return OR(AND(x,z),AND(y,NOT(z))); end
local J = function(x,y,z) return XOR(x,OR(y,NOT(z))); end

local FF = function(a,b,c,d,e,x,s)
	a = a + F(b,c,d) + x;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local GG = function(a,b,c,d,e,x,s)
	a = a + G(b,c,d) + x + 0x5a827999;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local HH = function(a,b,c,d,e,x,s)
	a = a + H(b,c,d) + x + 0x6ed9eba1;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local II = function(a,b,c,d,e,x,s)
	a = a + I(b,c,d) + x + 0x8f1bbcdc;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local JJ = function(a,b,c,d,e,x,s)
	a = a + J(b,c,d) + x + 0xa953fd4e;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local FFF = function(a,b,c,d,e,x,s)
	a = a + F(b,c,d) + x;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local GGG = function(a,b,c,d,e,x,s)
	a = a + G(b,c,d) + x + 0x7a6d76e9;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local HHH = function(a,b,c,d,e,x,s)
	a = a + H(b,c,d) + x + 0x6d703ef3;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local III = function(a,b,c,d,e,x,s)
	a = a + I(b,c,d) + x + 0x5c4dd124;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local JJJ = function(a,b,c,d,e,x,s)
	a = a + J(b,c,d) + x + 0x50a28be6;
	a = LROT(a,s) + e;
	a = AND(a, 0xFFFFFFFF);
	return a;
end

local RIPEMD160 = function()

	local queue = Queue();

	local A = 0x67452301;
	local B = 0xefcdab89;
	local C = 0x98badcfe;
	local D = 0x10325476;
	local E = 0xc3d2e1f0;

	local public = {};

	local processBlock = function()
		local aa,bb,cc,dd,ee = A,B,C,D,E;
		local aaa,bbb,ccc,ddd,eee = A,B,C,D,E;

		local X = {};

		for i=0,15 do
			X[i] = bytes2word(queue.pop(),queue.pop(),queue.pop(),queue.pop());
		end

		aa, cc = FF(aa, bb, cc, dd, ee, X[ 0], 11), LROT(cc,10);
		ee, bb = FF(ee, aa, bb, cc, dd, X[ 1], 14), LROT(bb,10);
		dd, aa = FF(dd, ee, aa, bb, cc, X[ 2], 15), LROT(aa,10);
		cc, ee = FF(cc, dd, ee, aa, bb, X[ 3], 12), LROT(ee,10);
		bb, dd = FF(bb, cc, dd, ee, aa, X[ 4],  5), LROT(dd,10);
		aa, cc = FF(aa, bb, cc, dd, ee, X[ 5],  8), LROT(cc,10);
		ee, bb = FF(ee, aa, bb, cc, dd, X[ 6],  7), LROT(bb,10);
		dd, aa = FF(dd, ee, aa, bb, cc, X[ 7],  9), LROT(aa,10);
		cc, ee = FF(cc, dd, ee, aa, bb, X[ 8], 11), LROT(ee,10);
		bb, dd = FF(bb, cc, dd, ee, aa, X[ 9], 13), LROT(dd,10);
		aa, cc = FF(aa, bb, cc, dd, ee, X[10], 14), LROT(cc,10);
		ee, bb = FF(ee, aa, bb, cc, dd, X[11], 15), LROT(bb,10);
		dd, aa = FF(dd, ee, aa, bb, cc, X[12],  6), LROT(aa,10);
		cc, ee = FF(cc, dd, ee, aa, bb, X[13],  7), LROT(ee,10);
		bb, dd = FF(bb, cc, dd, ee, aa, X[14],  9), LROT(dd,10);
		aa, cc = FF(aa, bb, cc, dd, ee, X[15],  8), LROT(cc,10);

		ee, bb = GG(ee, aa, bb, cc, dd, X[ 7],  7), LROT(bb,10);
		dd, aa = GG(dd, ee, aa, bb, cc, X[ 4],  6), LROT(aa,10);
		cc, ee = GG(cc, dd, ee, aa, bb, X[13],  8), LROT(ee,10);
		bb, dd = GG(bb, cc, dd, ee, aa, X[ 1], 13), LROT(dd,10);
		aa, cc = GG(aa, bb, cc, dd, ee, X[10], 11), LROT(cc,10);
		ee, bb = GG(ee, aa, bb, cc, dd, X[ 6],  9), LROT(bb,10);
		dd, aa = GG(dd, ee, aa, bb, cc, X[15],  7), LROT(aa,10);
		cc, ee = GG(cc, dd, ee, aa, bb, X[ 3], 15), LROT(ee,10);
		bb, dd = GG(bb, cc, dd, ee, aa, X[12],  7), LROT(dd,10);
		aa, cc = GG(aa, bb, cc, dd, ee, X[ 0], 12), LROT(cc,10);
		ee, bb = GG(ee, aa, bb, cc, dd, X[ 9], 15), LROT(bb,10);
		dd, aa = GG(dd, ee, aa, bb, cc, X[ 5],  9), LROT(aa,10);
		cc, ee = GG(cc, dd, ee, aa, bb, X[ 2], 11), LROT(ee,10);
		bb, dd = GG(bb, cc, dd, ee, aa, X[14],  7), LROT(dd,10);
		aa, cc = GG(aa, bb, cc, dd, ee, X[11], 13), LROT(cc,10);
		ee, bb = GG(ee, aa, bb, cc, dd, X[ 8], 12), LROT(bb,10);

		dd, aa = HH(dd, ee, aa, bb, cc, X[ 3], 11), LROT(aa,10);
		cc, ee = HH(cc, dd, ee, aa, bb, X[10], 13), LROT(ee,10);
		bb, dd = HH(bb, cc, dd, ee, aa, X[14],  6), LROT(dd,10);
		aa, cc = HH(aa, bb, cc, dd, ee, X[ 4],  7), LROT(cc,10);
		ee, bb = HH(ee, aa, bb, cc, dd, X[ 9], 14), LROT(bb,10);
		dd, aa = HH(dd, ee, aa, bb, cc, X[15],  9), LROT(aa,10);
		cc, ee = HH(cc, dd, ee, aa, bb, X[ 8], 13), LROT(ee,10);
		bb, dd = HH(bb, cc, dd, ee, aa, X[ 1], 15), LROT(dd,10);
		aa, cc = HH(aa, bb, cc, dd, ee, X[ 2], 14), LROT(cc,10);
		ee, bb = HH(ee, aa, bb, cc, dd, X[ 7],  8), LROT(bb,10);
		dd, aa = HH(dd, ee, aa, bb, cc, X[ 0], 13), LROT(aa,10);
		cc, ee = HH(cc, dd, ee, aa, bb, X[ 6],  6), LROT(ee,10);
		bb, dd = HH(bb, cc, dd, ee, aa, X[13],  5), LROT(dd,10);
		aa, cc = HH(aa, bb, cc, dd, ee, X[11], 12), LROT(cc,10);
		ee, bb = HH(ee, aa, bb, cc, dd, X[ 5],  7), LROT(bb,10);
		dd, aa = HH(dd, ee, aa, bb, cc, X[12],  5), LROT(aa,10);

		cc, ee = II(cc, dd, ee, aa, bb, X[ 1], 11), LROT(ee,10);
		bb, dd = II(bb, cc, dd, ee, aa, X[ 9], 12), LROT(dd,10);
		aa, cc = II(aa, bb, cc, dd, ee, X[11], 14), LROT(cc,10);
		ee, bb = II(ee, aa, bb, cc, dd, X[10], 15), LROT(bb,10);
		dd, aa = II(dd, ee, aa, bb, cc, X[ 0], 14), LROT(aa,10);
		cc, ee = II(cc, dd, ee, aa, bb, X[ 8], 15), LROT(ee,10);
		bb, dd = II(bb, cc, dd, ee, aa, X[12],  9), LROT(dd,10);
		aa, cc = II(aa, bb, cc, dd, ee, X[ 4],  8), LROT(cc,10);
		ee, bb = II(ee, aa, bb, cc, dd, X[13],  9), LROT(bb,10);
		dd, aa = II(dd, ee, aa, bb, cc, X[ 3], 14), LROT(aa,10);
		cc, ee = II(cc, dd, ee, aa, bb, X[ 7],  5), LROT(ee,10);
		bb, dd = II(bb, cc, dd, ee, aa, X[15],  6), LROT(dd,10);
		aa, cc = II(aa, bb, cc, dd, ee, X[14],  8), LROT(cc,10);
		ee, bb = II(ee, aa, bb, cc, dd, X[ 5],  6), LROT(bb,10);
		dd, aa = II(dd, ee, aa, bb, cc, X[ 6],  5), LROT(aa,10);
		cc, ee = II(cc, dd, ee, aa, bb, X[ 2], 12), LROT(ee,10);

		bb, dd = JJ(bb, cc, dd, ee, aa, X[ 4],  9), LROT(dd,10);
		aa, cc = JJ(aa, bb, cc, dd, ee, X[ 0], 15), LROT(cc,10);
		ee, bb = JJ(ee, aa, bb, cc, dd, X[ 5],  5), LROT(bb,10);
		dd, aa = JJ(dd, ee, aa, bb, cc, X[ 9], 11), LROT(aa,10);
		cc, ee = JJ(cc, dd, ee, aa, bb, X[ 7],  6), LROT(ee,10);
		bb, dd = JJ(bb, cc, dd, ee, aa, X[12],  8), LROT(dd,10);
		aa, cc = JJ(aa, bb, cc, dd, ee, X[ 2], 13), LROT(cc,10);
		ee, bb = JJ(ee, aa, bb, cc, dd, X[10], 12), LROT(bb,10);
		dd, aa = JJ(dd, ee, aa, bb, cc, X[14],  5), LROT(aa,10);
		cc, ee = JJ(cc, dd, ee, aa, bb, X[ 1], 12), LROT(ee,10);
		bb, dd = JJ(bb, cc, dd, ee, aa, X[ 3], 13), LROT(dd,10);
		aa, cc = JJ(aa, bb, cc, dd, ee, X[ 8], 14), LROT(cc,10);
		ee, bb = JJ(ee, aa, bb, cc, dd, X[11], 11), LROT(bb,10);
		dd, aa = JJ(dd, ee, aa, bb, cc, X[ 6],  8), LROT(aa,10);
		cc, ee = JJ(cc, dd, ee, aa, bb, X[15],  5), LROT(ee,10);
		bb, dd = JJ(bb, cc, dd, ee, aa, X[13],  6), LROT(dd,10);

		aaa, ccc = JJJ(aaa, bbb, ccc, ddd, eee, X[ 5],  8), LROT(ccc,10);
		eee, bbb = JJJ(eee, aaa, bbb, ccc, ddd, X[14],  9), LROT(bbb,10);
		ddd, aaa = JJJ(ddd, eee, aaa, bbb, ccc, X[ 7],  9), LROT(aaa,10);
		ccc, eee = JJJ(ccc, ddd, eee, aaa, bbb, X[ 0], 11), LROT(eee,10);
		bbb, ddd = JJJ(bbb, ccc, ddd, eee, aaa, X[ 9], 13), LROT(ddd,10);
		aaa, ccc = JJJ(aaa, bbb, ccc, ddd, eee, X[ 2], 15), LROT(ccc,10);
		eee, bbb = JJJ(eee, aaa, bbb, ccc, ddd, X[11], 15), LROT(bbb,10);
		ddd, aaa = JJJ(ddd, eee, aaa, bbb, ccc, X[ 4],  5), LROT(aaa,10);
		ccc, eee = JJJ(ccc, ddd, eee, aaa, bbb, X[13],  7), LROT(eee,10);
		bbb, ddd = JJJ(bbb, ccc, ddd, eee, aaa, X[ 6],  7), LROT(ddd,10);
		aaa, ccc = JJJ(aaa, bbb, ccc, ddd, eee, X[15],  8), LROT(ccc,10);
		eee, bbb = JJJ(eee, aaa, bbb, ccc, ddd, X[ 8], 11), LROT(bbb,10);
		ddd, aaa = JJJ(ddd, eee, aaa, bbb, ccc, X[ 1], 14), LROT(aaa,10);
		ccc, eee = JJJ(ccc, ddd, eee, aaa, bbb, X[10], 14), LROT(eee,10);
		bbb, ddd = JJJ(bbb, ccc, ddd, eee, aaa, X[ 3], 12), LROT(ddd,10);
		aaa, ccc = JJJ(aaa, bbb, ccc, ddd, eee, X[12],  6), LROT(ccc,10);

		eee, bbb = III(eee, aaa, bbb, ccc, ddd, X[ 6],  9), LROT(bbb,10);
		ddd, aaa = III(ddd, eee, aaa, bbb, ccc, X[11], 13), LROT(aaa,10);
		ccc, eee = III(ccc, ddd, eee, aaa, bbb, X[ 3], 15), LROT(eee,10);
		bbb, ddd = III(bbb, ccc, ddd, eee, aaa, X[ 7],  7), LROT(ddd,10);
		aaa, ccc = III(aaa, bbb, ccc, ddd, eee, X[ 0], 12), LROT(ccc,10);
		eee, bbb = III(eee, aaa, bbb, ccc, ddd, X[13],  8), LROT(bbb,10);
		ddd, aaa = III(ddd, eee, aaa, bbb, ccc, X[ 5],  9), LROT(aaa,10);
		ccc, eee = III(ccc, ddd, eee, aaa, bbb, X[10], 11), LROT(eee,10);
		bbb, ddd = III(bbb, ccc, ddd, eee, aaa, X[14],  7), LROT(ddd,10);
		aaa, ccc = III(aaa, bbb, ccc, ddd, eee, X[15],  7), LROT(ccc,10);
		eee, bbb = III(eee, aaa, bbb, ccc, ddd, X[ 8], 12), LROT(bbb,10);
		ddd, aaa = III(ddd, eee, aaa, bbb, ccc, X[12],  7), LROT(aaa,10);
		ccc, eee = III(ccc, ddd, eee, aaa, bbb, X[ 4],  6), LROT(eee,10);
		bbb, ddd = III(bbb, ccc, ddd, eee, aaa, X[ 9], 15), LROT(ddd,10);
		aaa, ccc = III(aaa, bbb, ccc, ddd, eee, X[ 1], 13), LROT(ccc,10);
		eee, bbb = III(eee, aaa, bbb, ccc, ddd, X[ 2], 11), LROT(bbb,10);

		ddd, aaa = HHH(ddd, eee, aaa, bbb, ccc, X[15],  9), LROT(aaa,10);
		ccc, eee = HHH(ccc, ddd, eee, aaa, bbb, X[ 5],  7), LROT(eee,10);
		bbb, ddd = HHH(bbb, ccc, ddd, eee, aaa, X[ 1], 15), LROT(ddd,10);
		aaa, ccc = HHH(aaa, bbb, ccc, ddd, eee, X[ 3], 11), LROT(ccc,10);
		eee, bbb = HHH(eee, aaa, bbb, ccc, ddd, X[ 7],  8), LROT(bbb,10);
		ddd, aaa = HHH(ddd, eee, aaa, bbb, ccc, X[14],  6), LROT(aaa,10);
		ccc, eee = HHH(ccc, ddd, eee, aaa, bbb, X[ 6],  6), LROT(eee,10);
		bbb, ddd = HHH(bbb, ccc, ddd, eee, aaa, X[ 9], 14), LROT(ddd,10);
		aaa, ccc = HHH(aaa, bbb, ccc, ddd, eee, X[11], 12), LROT(ccc,10);
		eee, bbb = HHH(eee, aaa, bbb, ccc, ddd, X[ 8], 13), LROT(bbb,10);
		ddd, aaa = HHH(ddd, eee, aaa, bbb, ccc, X[12],  5), LROT(aaa,10);
		ccc, eee = HHH(ccc, ddd, eee, aaa, bbb, X[ 2], 14), LROT(eee,10);
		bbb, ddd = HHH(bbb, ccc, ddd, eee, aaa, X[10], 13), LROT(ddd,10);
		aaa, ccc = HHH(aaa, bbb, ccc, ddd, eee, X[ 0], 13), LROT(ccc,10);
		eee, bbb = HHH(eee, aaa, bbb, ccc, ddd, X[ 4],  7), LROT(bbb,10);
		ddd, aaa = HHH(ddd, eee, aaa, bbb, ccc, X[13],  5), LROT(aaa,10);

		ccc, eee = GGG(ccc, ddd, eee, aaa, bbb, X[ 8], 15), LROT(eee,10);
		bbb, ddd = GGG(bbb, ccc, ddd, eee, aaa, X[ 6],  5), LROT(ddd,10);
		aaa, ccc = GGG(aaa, bbb, ccc, ddd, eee, X[ 4],  8), LROT(ccc,10);
		eee, bbb = GGG(eee, aaa, bbb, ccc, ddd, X[ 1], 11), LROT(bbb,10);
		ddd, aaa = GGG(ddd, eee, aaa, bbb, ccc, X[ 3], 14), LROT(aaa,10);
		ccc, eee = GGG(ccc, ddd, eee, aaa, bbb, X[11], 14), LROT(eee,10);
		bbb, ddd = GGG(bbb, ccc, ddd, eee, aaa, X[15],  6), LROT(ddd,10);
		aaa, ccc = GGG(aaa, bbb, ccc, ddd, eee, X[ 0], 14), LROT(ccc,10);
		eee, bbb = GGG(eee, aaa, bbb, ccc, ddd, X[ 5],  6), LROT(bbb,10);
		ddd, aaa = GGG(ddd, eee, aaa, bbb, ccc, X[12],  9), LROT(aaa,10);
		ccc, eee = GGG(ccc, ddd, eee, aaa, bbb, X[ 2], 12), LROT(eee,10);
		bbb, ddd = GGG(bbb, ccc, ddd, eee, aaa, X[13],  9), LROT(ddd,10);
		aaa, ccc = GGG(aaa, bbb, ccc, ddd, eee, X[ 9], 12), LROT(ccc,10);
		eee, bbb = GGG(eee, aaa, bbb, ccc, ddd, X[ 7],  5), LROT(bbb,10);
		ddd, aaa = GGG(ddd, eee, aaa, bbb, ccc, X[10], 15), LROT(aaa,10);
		ccc, eee = GGG(ccc, ddd, eee, aaa, bbb, X[14],  8), LROT(eee,10);

		bbb, ddd = FFF(bbb, ccc, ddd, eee, aaa, X[12] ,  8), LROT(ddd,10);
		aaa, ccc = FFF(aaa, bbb, ccc, ddd, eee, X[15] ,  5), LROT(ccc,10);
		eee, bbb = FFF(eee, aaa, bbb, ccc, ddd, X[10] , 12), LROT(bbb,10);
		ddd, aaa = FFF(ddd, eee, aaa, bbb, ccc, X[ 4] ,  9), LROT(aaa,10);
		ccc, eee = FFF(ccc, ddd, eee, aaa, bbb, X[ 1] , 12), LROT(eee,10);
		bbb, ddd = FFF(bbb, ccc, ddd, eee, aaa, X[ 5] ,  5), LROT(ddd,10);
		aaa, ccc = FFF(aaa, bbb, ccc, ddd, eee, X[ 8] , 14), LROT(ccc,10);
		eee, bbb = FFF(eee, aaa, bbb, ccc, ddd, X[ 7] ,  6), LROT(bbb,10);
		ddd, aaa = FFF(ddd, eee, aaa, bbb, ccc, X[ 6] ,  8), LROT(aaa,10);
		ccc, eee = FFF(ccc, ddd, eee, aaa, bbb, X[ 2] , 13), LROT(eee,10);
		bbb, ddd = FFF(bbb, ccc, ddd, eee, aaa, X[13] ,  6), LROT(ddd,10);
		aaa, ccc = FFF(aaa, bbb, ccc, ddd, eee, X[14] ,  5), LROT(ccc,10);
		eee, bbb = FFF(eee, aaa, bbb, ccc, ddd, X[ 0] , 15), LROT(bbb,10);
		ddd, aaa = FFF(ddd, eee, aaa, bbb, ccc, X[ 3] , 13), LROT(aaa,10);
		ccc, eee = FFF(ccc, ddd, eee, aaa, bbb, X[ 9] , 11), LROT(eee,10);
		bbb, ddd = FFF(bbb, ccc, ddd, eee, aaa, X[11] , 11), LROT(ddd,10);

		A, B, C, D, E = AND(B + cc + ddd, 0xFFFFFFFF),
						AND(C + dd + eee, 0xFFFFFFFF),
						AND(D + ee + aaa, 0xFFFFFFFF),
						AND(E + aa + bbb, 0xFFFFFFFF),
						AND(A + bb + ccc, 0xFFFFFFFF);

	end

	public.init = function()
		queue.reset();

		A = 0x67452301;
		B = 0xefcdab89;
		C = 0x98badcfe;
		D = 0x10325476;
		E = 0xc3d2e1f0;

		return public;
	end

	public.update = function(bytes)
		for b in bytes do
			queue.push(b);
			if(queue.size() >= 64) then processBlock(); end
		end

		return public;
	end

	public.finish = function()
		local bits = queue.getHead() * 8;

		queue.push(0x80);

		while ((queue.size()+7) % 64) < 63 do
			queue.push(0x00);
		end

		local b0,b1,b2,b3,b4,b5,b6,b7 = dword2bytes(bits);

		queue.push(b0);
		queue.push(b1);
		queue.push(b2);
		queue.push(b3);
		queue.push(b4);
		queue.push(b5);
		queue.push(b6);
		queue.push(b7);

		while queue.size() > 0 do
			processBlock();
		end

		return public;
	end

	public.asBytes = function()
		local  b0, b1, b2, b3 = word2bytes(A);
		local  b4, b5, b6, b7 = word2bytes(B);
		local  b8, b9,b10,b11 = word2bytes(C);
		local b12,b13,b14,b15 = word2bytes(D);
		local b16,b17,b18,b19 = word2bytes(E);

		return { b0, b1, b2, b3, b4, b5, b6, b7, b8, b9,
				b10,b11,b12,b13,b14,b15,b16,b17,b18,b19};
	end

	public.asHex = function()
		local  b0, b1, b2, b3 = word2bytes(A);
		local  b4, b5, b6, b7 = word2bytes(B);
		local  b8, b9,b10,b11 = word2bytes(C);
		local b12,b13,b14,b15 = word2bytes(D);
		local b16,b17,b18,b19 = word2bytes(E);

		local fmt = "%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x%02x";

		return String.format(fmt,
				 b0, b1, b2, b3, b4, b5, b6, b7, b8, b9,
				b10,b11,b12,b13,b14,b15,b16,b17,b18,b19);
	end

	return public;

end

return RIPEMD160;