✨ MixCols and InvMixCols and 7seg done (#1)

* mixCols and InvMixCols and 7seg done

* Delete InvMixColumns_tb.v.bak

deleted unneeded file

* Update mixColumns.v

* Update InvMixColumns.v

DisplayDecoder.v

@@ -0,0 +1,20 @@
+module DisplayDecoder(in,display7);
+	input [3:0]in;
+  	output [6:0]display7;
+
+	always @(in)
+		case(in)
+            0 : display7 = 7'b0000001;
+            1 : display7 = 7'b1001111;
+            2 : display7 = 7'b0010010;
+            3 : display7 = 7'b0000110;
+            4 : display7 = 7'b1001100;
+            5 : display7 = 7'b0100100;
+            6 : display7 = 7'b0100000;
+            7 : display7 = 7'b0001111;
+            8 : display7 = 7'b0000000;
+            9 : display7 = 7'b0000100;
+            default : display7 = 7'b1111111; 
+        endcase
+
+endmodule

InvMixColumns.v

@@ -0,0 +1,63 @@
+module InvMixColumns (stateIn,stateOut);
+	input[127:0] stateIn;
+	output[127:0] stateOut;
+
+	//mul2 function that multiply x by 2^n and fixes the overflow
+	function [7:0] mul2(input [7:0]in,input integer n);
+		integer i;
+		begin
+			for(i = 0; i < n; i = i + 1)begin
+				if(in[7] == 1) in = (in << 1) ^ 8'h1B;
+				else in = in << 1;
+			end
+			mul2 = in;
+		end
+	endfunction
+
+	function [7:0] mb0e; //Multiply by 0e
+	input [7:0] x;
+	begin
+		mb0e = mul2(x,3) ^ mul2(x,2)^ mul2(x,1);
+	end
+	endfunction
+
+	function [7:0] mb0d; //Multiply by 0d
+	input [7:0] x;
+	begin
+		mb0d = mul2(x,3) ^ mul2(x,2) ^ x;
+	end
+	endfunction
+
+	function [7:0] mb0b;  //Multiply by 0b
+	input [7:0] x;
+	begin
+		mb0b = mul2(x,3) ^ mul2(x,1) ^ x;
+	end
+	endfunction
+
+	function [7:0] mb09; //Multiply by 09
+	input [7:0] x;
+	begin
+		mb09 = mul2(x,3) ^  x;
+	end
+	endfunction
+
+	genvar i;
+	generate
+		for(i = 0; i < 4; i = i + 1)begin: InvMixColumnsLoop
+			//state[0,c] = 0e*state[0,c] + 0b*state[1,c] + 0d*state[2,c] + 09*state[3,c]
+			assign stateOut[32*i+24+:8] =  mb0e(stateIn[32*i+24+:8]) ^ mb0b(stateIn[32*i+16+:8]) ^ mb0d(stateIn[32*i+8 +:8]) ^ mb09(stateIn[32*i   +:8]);
+
+			//state[1,c] = 0e*state[1,c] + 0b* state[2,c] + 0d*state[3,c] + 09*state[0,c]
+			assign stateOut[32*i+16+:8] =  mb0e(stateIn[32*i+16+:8]) ^ mb0b(stateIn[32*i+8 +:8]) ^ mb0d(stateIn[32*i   +:8]) ^ mb09(stateIn[32*i+24+:8]);
+
+			//state[2,c] = 0e*state[2,c] + 0b* state[3,c] + 0d*state[0,c] + 09*state[1,c]
+			assign stateOut[32*i+8 +:8] =  mb0e(stateIn[32*i+8 +:8]) ^ mb0b(stateIn[32*i   +:8]) ^ mb0d(stateIn[32*i+24+:8]) ^ mb09(stateIn[32*i+16+:8]);
+
+			//state[3,c] = 0e*state[3,c] + 0b* state[0,c] + 0d*state[1,c] + 09*state[2,c]
+			assign stateOut[32*i   +:8] =  mb0e(stateIn[32*i   +:8]) ^ mb0b(stateIn[32*i+24+:8]) ^ mb0d(stateIn[32*i+16+:8]) ^ mb09(stateIn[32*i+8 +:8]);
+		end
+	endgenerate
+
+
+endmodule

InvMixColumns_tb.v

@@ -0,0 +1,21 @@
+module InvMixColumns_tb();
+
+	reg [127:0] stateIn;
+	wire [127:0] stateOut;
+
+	InvMixColumns mix(stateIn,stateOut);
+
+	initial begin
+		stateIn = 128'hbd6e7c3df2b5779e0b61216e8b10b689;
+		$monitor("expected: 4773b91ff72f354361cb018ea1e6cf2c actual: %h\n",stateOut);
+		#2
+		stateIn = 128'hfde3bad205e5d0d73547964ef1fe37f1;
+		$monitor("expected: 2d7e86a339d9393ee6570a1101904e16 actual: %h\n",stateOut);
+		#2
+		stateIn = 128'hd1876c0f79c4300ab45594add66ff41f;
+		$monitor("expected: 39daee38f4f1a82aaf432410c36d45b9 actual: %h\n",stateOut);
+
+
+	end
+
+endmodule

mixColumns.v

@@ -0,0 +1,33 @@
+
+module MixColumns (stateIn,stateOut);
+	input[127:0] stateIn;
+	output[127:0] stateOut;
+
+
+
+	//xtime function that multiply x by 2 and fixes the overflow
+	function [7:0] xtime;
+		input [7:0]in;
+		if(in[7] == 1) xtime = (in << 1) ^ 8'h1B;
+		else xtime = in << 1;
+	endfunction
+
+	genvar i;
+	generate
+		for(i = 0; i < 4; i = i + 1)begin: mixColumnsLoop
+			//state[0,c] = 2*state[0,c] + (2 * state[1,c] + state[1,c]) + state[2,c] + state[3,c]
+			assign stateOut[32*i+24+:8] =  xtime(stateIn[32*i+24+:8]) ^ (xtime(stateIn[32*i+16+:8]) ^ stateIn[32*i+16+:8]) ^ stateIn[32*i+8 +:8] ^ stateIn[32*i   +:8];
+
+			//state[1,c] = 2*state[1,c] + (2 * state[2,c] + state[2,c]) + state[3,c] + state[0,c]
+			assign stateOut[32*i+16+:8] =  xtime(stateIn[32*i+16+:8]) ^ (xtime(stateIn[32*i+8 +:8]) ^ stateIn[32*i+8 +:8]) ^ stateIn[32*i   +:8] ^ stateIn[32*i+24+:8];
+
+			//state[2,c] = 2*state[2,c] + (2 * state[3,c] + state[3,c]) + state[0,c] + state[1,c]
+			assign stateOut[32*i+8 +:8] =  xtime(stateIn[32*i+8 +:8]) ^ (xtime(stateIn[32*i   +:8]) ^ stateIn[32*i   +:8]) ^ stateIn[32*i+24+:8] ^ stateIn[32*i+16+:8];
+
+			//state[3,c] = 2*state[3,c] + (2 * state[0,c] + state[0,c]) + state[1,c] + state[2,c]
+			assign stateOut[32*i   +:8] =  xtime(stateIn[32*i   +:8]) ^ (xtime(stateIn[32*i+24+:8]) ^ stateIn[32*i+24+:8]) ^ stateIn[32*i+16+:8] ^ stateIn[32*i+8 +:8];
+		end
+	endgenerate
+
+
+endmodule

mixColumns_tb.v

@@ -0,0 +1,21 @@
+module MixColumns_tb();
+
+	reg [127:0] stateIn;
+	wire [127:0] stateOut;
+
+	MixColumns mix(stateIn,stateOut);
+
+	initial begin
+		stateIn = 128'h6353e08c0960e104cd70b751bacad0e7;
+		$monitor("expected: 5f72641557f5bc92f7be3b291db9f91a actual: %h\n",stateOut);
+		#2
+		stateIn = 128'h84e1dd691a41d76f792d389783fbac70;
+		$monitor("expected: 9f487f794f955f662afc86abd7f1ab29 actual: %h\n",stateOut);
+		#2
+		stateIn = 128'h1fb5430ef0accf64aa370cde3d77792c;
+		$monitor("expected: b7a53ecbbf9d75a0c40efc79b674cc11 actual: %h\n",stateOut);
+
+
+	end
+
+endmodule