hmac_top.v

hmac的verilog代码, 通过控制字选择进行sha1运算或hmac运算

///////////////////////////////////////////////////////
//    module describe
// name: 		hmac_top
// function:	the top module of the sha1-ip
// writer:		zy
// data:		2006/03/14
// version:		1.0
// feature:		
////////////////////////////////////////////////////////


module hmac_top(clk,en,wr,reset,addr,datain,digestresult,sha1int,wr_wait);

input clk;
input en;
input wr;
input reset;
input [3:0] addr;
input [31:0] datain;

output [31:0] digestresult;
output sha1int;
output wr_wait;

wire [511:0] dataout;
wire dataready;
wire wtready;
wire paderror;
wire [31:0] wt;
wire digestready;
wire [159:0] digestout;
wire [31:0] digestresult;
wire hashready;
wire expadflgreg;
wire sha1int;
wire [4:0] ctrlword;
wire [2:0] maskword;
wire localreset;
wire [1:0] procsel;
wire keyready;

reg wr_wait;

always @(en)
begin
	wr_wait<=~en;
end

modectrlunit modectrlunit_hmac(clk,reset,en,wr,addr,datain[4:0],ctrlword,maskword);
resetgenunit resetgenunit_hmac(reset,ctrlword[1],localreset);
datapadunit datapadunit_hmac(en,clk,localreset,wr,ctrlword[0],datain,addr,hashready,ctrlword[2],digestout,dataout,dataready,expadflgreg,paderror,procsel,keyready,digestready);
wprounit wprounit_hmac(clk,localreset,dataout,dataready,wt,wtready);
shacaoreunit shacaoreunit_hmac(clk,localreset,wtready,wt,procsel,ctrlword[3],ctrlword[4],ctrlword[2],hashready,digestout);
hashoutput hashoutput_hmac(clk,en,localreset,wr,maskword,addr,digestout,paderror,digestready,keyready,digestresult,sha1int);

endmodule