sha1_top.vhd

sha_1加密运算模块

            visual_S0_current <= S31;
          elsif (VIN = "011" and CW = "01") then
            SCEN2<='0';SWEN2<='0';SADDR2<="001";
            E2<='0';CW<=CW+1;
            visual_S0_current <= S31;
          elsif (VIN = "011" and CW = "00") then
            A_LOGA_CTRL<="00";E3<='0';
            NOT_CTRL<='0';REGIN_CTRL<="100";
            E2<='1';CW<=CW+1;
            visual_S0_current <= S31;
          elsif (VIN = "010" and CW = "10") then
            A_LOGA_CTRL<="10";NOT_CTRL<='0';
            REGIN_CTRL<="100";E4<='1';CW<=CW+1;
            E1<='0';
            visual_S0_current <= S31;
          elsif (VIN = "001") then
            SCEN2<='0';SWEN2<='0';SADDR2<="110";E1<='0';
            VIN<=VIN+1;
            visual_S0_current <= S31;
          elsif (VIN = "010" and CW = "00") then
            SCEN2<='0';SWEN2<='1';SADDR2<="000";
            RAM1_4S<="01";CW<=CW+1;
            visual_S0_current <= S31;
          elsif (VIN = "010" and CW = "01") then
            A_LOGA_CTRL<="11";NOT_CTRL<='0';
            REGIN_CTRL<="100";E1<='1';CW<=CW+1;
            visual_S0_current <= S31;
          elsif (VIN = "011" and CW = "10") then
            SCEN2<='0';SWEN2<='1';SADDR2<="110";
            VIN<=VIN+1;RAM1_4S<="01";
            visual_S0_current <= S31;
          elsif (VIN = "101") then
            SCEN1<='0';SWEN1<='0';AD1<="101";
            SCEN2<='0';SWEN2<='0';SADDR2<="000";
            E1<='0';VIN<=VIN+1;COUNT<=COUNT+1;
            visual_S0_current <= S31;
          elsif (VIN = "100") then
            A_LOGA_CTRL<="00";NOT_CTRL<='0';
            REGIN_CTRL<="100";E1<='1';
            VIN<=VIN+1;
            visual_S0_current <= S31;
          elsif (VIN = "110") then
            if (COUNT > 0 and COUNT < 20) then
              VIN<="000";CW<="00";
              SCEN1<='1';SWEN1<='1';
              SCEN2<='1';SWEN2<='1';
              visual_S0_current <= S17;
            elsif (COUNT = 20 and (LUN = "00" or LUN = "01" or LUN = "10")) then
              VIN<="000";CW<="00";
              SCEN1<='1';SWEN1<='1';
              SCEN2<='1';SWEN2<='1';
              COUNT<="00000";LUN<=LUN+1;
              visual_S0_current <= S34;
            elsif (LUN = "11" and COUNT = 20) then
              VIN<="000";CW<="00";
              SCEN1<='1';SWEN1<='1';
              SCEN2<='1';SWEN2<='1';
              visual_S0_current <= S21;
            else
              VIN<="000";CW<="00";
              SCEN1<='1';SWEN1<='1';
              SCEN2<='1';SWEN2<='1';
              visual_S0_current <= S31;
            end if;
          else
            visual_S0_current <= S31;
          end if;
 
        when S34 =>
          if (CW = "01" and VIN = "011") then
            A_LOGA_CTRL<="01";A_LOGB_CTRL<="00";
            REGIN_CTRL<="011";E2<='1';CW<=CW+1;
            visual_S0_current <= S34;
          elsif (VIN = "001") then
            SCEN1<='0';SWEN1<='1';RAM1_4S<="00";VIN<=VIN+1;
            if COUNT=0 then AD1<="001";
            elsif COUNT=4 then AD1<="010";
            elsif COUNT=8 then AD1<="011";
            elsif COUNT=12 then AD1<="100";
            elsif COUNT=16 then AD1<="000";
            end if;
            visual_S0_current <= S34;
          elsif (VIN = "010") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="10";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S34;
          elsif (VIN = "011" and CW = "00") then
            E1<='0';SCEN1<='0';SWEN1<='1';CW<=CW+1;
            SCEN4<='0';SWEN4<='1';RAM1_4S<="11";
            if COUNT=0 then AD1<="011";AD4<="100";
            elsif COUNT=4 then AD1<="100";AD4<="000";
            elsif COUNT=8 then AD1<="000";AD4<="001";
            elsif COUNT=12 then AD1<="001";AD4<="010";
            elsif COUNT=16 then AD1<="010";AD4<="011";
            end if;
            visual_S0_current <= S34;
          elsif (VIN = "000") then
            VIN<=VIN+1;
            visual_S0_current <= S34;
          elsif (CW = "10" and VIN = "011") then
            SCEN1<='0';SWEN1<='0';AD1<="111";
            E2<='0';CW<=CW+1;
            visual_S0_current <= S34;
          elsif (CW = "11" and VIN = "011") then
            SCEN1<='0';SWEN1<='1';AD1<="111";
            VIN<=VIN+1;RAM1_4S<="00";
            visual_S0_current <= S34;
          elsif (VIN = "100") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="01";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S34;
          elsif (VIN = "101") then
            SCEN2<='0';SWEN2<='0';SADDR2<="011";
            E1<='0';VIN<=VIN+1;
            visual_S0_current <= S34;
          elsif (VIN = "110") then
            VIN<="000";CW<="00";
            SCEN2<='1';SWEN2<='1';
            visual_S0_current <= S36;
          else
            visual_S0_current <= S34;
          end if;
 
        when S36 =>
          if (CW = "10" and VIN = "011") then
            SCEN1<='0';SWEN1<='0';AD1<="111";
            E2<='0';CW<=CW+1;
            visual_S0_current <= S36;
          elsif (CW = "01" and VIN = "011") then
            A_LOGA_CTRL<="10";A_LOGB_CTRL<="01";
            REGIN_CTRL<="011";E2<='1';CW<=CW+1;
            visual_S0_current <= S36;
          elsif (VIN = "010") then
            A_LOGA_CTRL<="01";A_LOGB_CTRL<="11";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S36;
          elsif (VIN = "011" and CW = "00") then
            E1<='0';SCEN1<='0';SWEN1<='1';CW<=CW+1;
            SCEN4<='0';SWEN4<='1';RAM1_4S<="11";
            if COUNT=1 then AD1<="011";AD4<="100";
            elsif COUNT=5 then AD1<="100";AD4<="000";
            elsif COUNT=9 then AD1<="000";AD4<="001";
            elsif COUNT=13 then AD1<="001";AD4<="010";
            elsif COUNT=17 then AD1<="010";AD4<="011";
            end if;
            visual_S0_current <= S36;
          elsif (VIN = "000") then
            COUNT<=COUNT+1;
            VIN<=VIN+1;
            visual_S0_current <= S36;
          elsif (VIN = "001") then
            SCEN1<='0';SWEN1<='1';RAM1_4S<="00";VIN<=VIN+1;
            if COUNT=1 then AD1<="001";
            elsif COUNT=5 then AD1<="010";
            elsif COUNT=9 then AD1<="011";
            elsif COUNT=13 then AD1<="100";
            elsif COUNT=17 then AD1<="000";
            end if;
            visual_S0_current <= S36;
          elsif (CW = "11" and VIN = "011") then
            SCEN1<='0';SWEN1<='1';AD1<="111";
            VIN<=VIN+1;RAM1_4S<="00";
            visual_S0_current <= S36;
          elsif (VIN = "100") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="01";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S36;
          elsif (VIN = "101") then
            SCEN2<='0';SWEN2<='0';SADDR2<="100";
            E1<='0';VIN<=VIN+1;
            visual_S0_current <= S36;
          elsif (VIN = "110") then
            VIN<="000";CW<="00";
            SCEN2<='1';SWEN2<='1';
            visual_S0_current <= S37;
          else
            visual_S0_current <= S36;
          end if;
 
        when S37 =>
          if (VIN = "001") then
            SCEN1<='0';SWEN1<='1';RAM1_4S<="11";VIN<=VIN+1;
            SCEN4<='0';SWEN4<='1';
            if COUNT=2 then AD1<="001";AD4<="010";
            elsif COUNT=6 then AD1<="010";AD4<="011";
            elsif COUNT=10 then AD1<="011";AD4<="100";
            elsif COUNT=14 then AD1<="100";AD4<="000";
            elsif COUNT=18 then AD1<="000";AD4<="001";
            end if;
            visual_S0_current <= S37;
          elsif (CW = "10" and VIN = "011") then
            SCEN1<='0';SWEN1<='0';AD1<="111";
            E2<='0';CW<=CW+1;
            visual_S0_current <= S37;
          elsif (VIN = "010") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="10";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S37;
          elsif (VIN = "011" and CW = "00") then
            E1<='0';SCEN1<='0';SWEN1<='1';CW<=CW+1;
            SCEN4<='0';SWEN4<='1';RAM1_4S<="11";
            if COUNT=2 then AD1<="011";AD4<="100";
            elsif COUNT=6 then AD1<="100";AD4<="000";
            elsif COUNT=10 then AD1<="000";AD4<="001";
            elsif COUNT=14 then AD1<="001";AD4<="010";
            elsif COUNT=18 then AD1<="010";AD4<="011";
            end if;
            visual_S0_current <= S37;
          elsif (CW = "01" and VIN = "011") then
            A_LOGA_CTRL<="11";A_LOGB_CTRL<="10";
            REGIN_CTRL<="011";E2<='1';CW<=CW+1;
            visual_S0_current <= S37;
          elsif (VIN = "000") then
            COUNT<=COUNT+1;
            VIN<=VIN+1;
            visual_S0_current <= S37;
          elsif (CW = "11" and VIN = "011") then
            SCEN1<='0';SWEN1<='1';AD1<="111";
            VIN<=VIN+1;RAM1_4S<="00";
            visual_S0_current <= S37;
          elsif (VIN = "100") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="01";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S37;
          elsif (VIN = "101") then
            SCEN2<='0';SWEN2<='0';SADDR2<="101";
            E1<='0';VIN<=VIN+1;
            visual_S0_current <= S37;
          elsif (VIN = "110") then
            VIN<="000";CW<="00";
            SCEN2<='1';SWEN2<='1';
            visual_S0_current <= S45;
          else
            visual_S0_current <= S37;
          end if;
 
        when S45 =>
          if (VIN = "000") then
            SCEN2<='0';SWEN2<='1';SADDR2<="011";
            RAM1_4S<="01";VIN<=VIN+1;
            visual_S0_current <= S45;
          elsif (VIN = "001") then
            A_LOGA_CTRL<="00";REGIN_CTRL<="111";
            E1<='1';VIN<=VIN+1;
            visual_S0_current <= S45;
          elsif (VIN = "010") then
            SCEN2<='0';SWEN2<='0';SADDR2<="011";
            E1<='0';VIN<=VIN+1;
            visual_S0_current <= S45;
          elsif (VIN = "011") then
            VIN<="000";CW<="00";
            SCEN2<='1';SWEN2<='1';
            visual_S0_current <= S38;
          else
            visual_S0_current <= S45;
          end if;
 
        when S21 =>
          if (VIN = "000") then
            SCEN2<='0';SWEN2<='1';SADDR2<="001";
            RAM1_4S<="01";VIN<=VIN+1;
            visual_S0_current <= S21;
          elsif (VIN = "011" and CW = "00") then
            SCEN1<='0';SWEN1<='1';AD1<="101";
            SCEN4<='0';SWEN4<='1';AD4<="110";
            RAM1_4S<="11";CW<=CW+1;
            visual_S0_current <= S21;
          elsif (CW = "11" and VIN = "011") then
            A_LOGA_CTRL<="10";A_LOGB_CTRL<="10";
            REGIN_CTRL<="000";E3<='1';E2<='0';
            VIN<=VIN+1;CW<="00";
            visual_S0_current <= S21;
          elsif (CW = "01" and VIN = "011") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="00";
            REGIN_CTRL<="000";E1<='1';
            CW<=CW+1;
            visual_S0_current <= S21;
          elsif (VIN = "101") then
            SCEN2<='0';SWEN2<='0';SADDR2<="000";
            SCEN1<='0';SWEN1<='0';AD1<="000";
            E4<='0';VIN<=VIN+1;
            visual_S0_current <= S21;
          elsif (CW = "10" and VIN = "011") then
            A_LOGA_CTRL<="01";A_LOGB_CTRL<="01";
            REGIN_CTRL<="000";E2<='1';E1<='0';
            CW<=CW+1;
            visual_S0_current <= S21;
          elsif (VIN = "010") then
            E1<='0';SCEN1<='0';SWEN1<='0';
            VIN<=VIN+1;AD1<="111";
            visual_S0_current <= S21;
          elsif (VIN = "001") then
            A_LOGA_CTRL<="00";NOT_CTRL<='0';
            REGIN_CTRL<="100";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S21;
          elsif (VIN = "100") then
            A_LOGA_CTRL<="11";A_LOGB_CTRL<="11";
            REGIN_CTRL<="000";E4<='1';E3<='0';
            VIN<=VIN+1;
            visual_S0_current <= S21;
          elsif (VIN = "110" and CW = "00") then
            SCEN2<='1';SWEN2<='1';
            SCEN1<='0';SWEN1<='1';AD1<="111";
            SCEN4<='0';SWEN4<='1';AD4<="111";
            RAM1_4S<="11";CW<=CW+1;
            visual_S0_current <= S21;
          elsif (VIN = "110" and CW = "01") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="00";
            REGIN_CTRL<="000";E1<='1';CW<=CW+1;
            visual_S0_current <= S21;
          elsif (VIN = "110" and CW = "10") then
            SCEN2<='0';SWEN2<='0';E1<='0';
            SADDR2<="001";CW<=CW+1;
            SCEN1<='0';SWEN1<='0';AD1<="001";
            visual_S0_current <= S21;
          elsif (VIN = "110" and CW = "11") then
            VIN<="000";CW<="00";
            SCEN2<='1';SWEN2<='1';
            SCEN1<='1';SWEN1<='1';
            OV<='1';
            visual_S0_current <= S41;
          else
            visual_S0_current <= S21;
          end if;
 
        when S38 =>
          if (VIN = "000") then
            COUNT<=COUNT+1;
            VIN<=VIN+1;
            visual_S0_current <= S38;
          elsif (VIN = "001") then
            SCEN1<='0';SWEN1<='1';RAM1_4S<="11";VIN<=VIN+1;
            SCEN4<='0';SWEN4<='1';
            if COUNT=3 then AD1<="001";AD4<="010";
            elsif COUNT=7 then AD1<="010";AD4<="011";
            elsif COUNT=11 then AD1<="011";AD4<="100";
            elsif COUNT=15 then AD1<="100";AD4<="000";
            elsif COUNT=19 then AD1<="000";AD4<="001";
            end if;
            visual_S0_current <= S38;
          elsif (VIN = "010") then
            A_LOGA_CTRL<="01";A_LOGB_CTRL<="11";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S38;
          elsif (VIN = "011" and CW = "00") then
            SCEN1<='0';SWEN1<='1';RAM1_4S<="01";CW<=CW+1;
            SCEN2<='0';SWEN2<='1';SADDR2<="011";E1<='0';
            if COUNT=3 then AD1<="011";
            elsif COUNT=7 then AD1<="100";
            elsif COUNT=11 then AD1<="000";
            elsif COUNT=15 then AD1<="001";
            elsif COUNT=19 then AD1<="010";
            end if;
            visual_S0_current <= S38;
          elsif (CW = "01" and VIN = "011") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="11";
            REGIN_CTRL<="011";E2<='1';CW<=CW+1;
            visual_S0_current <= S38;
          elsif (CW = "10" and VIN = "011") then
            SCEN1<='0';SWEN1<='0';AD1<="111";
            E2<='0';CW<=CW+1;
            visual_S0_current <= S38;
          elsif (CW = "11" and VIN = "011") then
            SCEN1<='0';SWEN1<='1';AD1<="111";
            VIN<=VIN+1;RAM1_4S<="00";
            visual_S0_current <= S38;
          elsif (VIN = "100") then
            A_LOGA_CTRL<="00";A_LOGB_CTRL<="01";
            REGIN_CTRL<="011";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S38;
          elsif (VIN = "101") then
            SCEN2<='0';SWEN2<='0';SADDR2<="110";
            E1<='0';VIN<=VIN+1;
            visual_S0_current <= S38;
          elsif (VIN = "110") then
            VIN<="000";CW<="00";
            visual_S0_current <= S39;
          else
            visual_S0_current <= S38;
          end if;
 
        when S39 =>
          if (VIN = "001") then
            A_LOGA_CTRL<="00";NOT_CTRL<='0';
            REGIN_CTRL<="100";E1<='1';VIN<=VIN+1;
            visual_S0_current <= S39;
          elsif (VIN = "010") then
            SCEN2<='0';SWEN2<='1';SADDR2<="100";
            RAM1_4S<="01";VIN<=VIN+1;E1<='0';
            visual_S0_current <= S39;
          elsif (VIN = "110" and CW = "00") then
            SCEN2<='0';SWEN2<='1';SADDR2<="110";
            RAM1_4S<="01";CW<=CW+1;E3<='0';
            visual_S0_current <= S39;
          elsif (VIN = "011") then
            A_LOGA_CTRL<="00";
            REGIN_CTRL<="111";E2<='1';VIN<=VIN+1;
            visual_S0_current <= S39;
          elsif (VIN = "000") then
            SCEN2<='0';SWEN2<='1';SADDR2<="011";
            RAM1_4S<="01";VIN<=VIN+1;
            visual_S0_current <= S39;
          elsif (VIN = "100") then
            SCEN2<='0';SWEN2<='1';SADDR2<="101";
            RAM1_4S<="01";VIN<=VIN+1;E2<='0';
            visual_S0_current <= S39;
          elsif (VIN = "101") then
            A_LOGA_CTRL<="00";
            REGIN_CTRL<="111";E3<='1';VIN<=VIN+1;
            visual_S0_current <= S39;
          elsif (CW = "01" and VIN = "110") then
            A_LOGA_CTRL<="00";
            REGIN_CTRL<="111";E4<='1';CW<=CW+1;
            visual_S0_current <= S39;
          elsif (CW = "10" and VIN = "110") then