Adding two more signing test cases with e=65537 and explicit lengths for exponent and modulus, message.

1 files changed, 169 insertions, 5 deletions

diff --git a/src/tb/tb_modexp.v b/src/tb/tb_modexp.v
index 4b3029e..1eb7c13 100644
--- a/src/tb/tb_modexp.v
+++ b/src/tb/tb_modexp.v
@@ -204,8 +204,7 @@ module tb_modexp();
       #(CLK_PERIOD);
 
       if (DISPLAY_TEST_CYCLES)
-        $display("*** Number of cycles performed during test: 0x%016x",
-                 {dut.cycle_ctr_high_reg, dut.cycle_ctr_low_reg});
+        $display("*** Number of cycles performed during test: 0x%016x", test_cycle_ctr);
     end
   endtask // stop_test_cycle_ctr()
 
@@ -775,7 +774,6 @@ module tb_modexp();
   endtask // autogenerated_BASIC_33bit
 
 
-
   //----------------------------------------------------------------
   // autogenerated_BASIC_128bit()
   //
@@ -835,6 +833,169 @@ module tb_modexp();
 
 
   //----------------------------------------------------------------
+  // e65537_64bit_modulus()
+  //----------------------------------------------------------------
+  task e65537_64bit_modulus();
+    reg [31 : 0] read_data;
+    begin
+      success = 32'h1;
+      tc_ctr = tc_ctr + 1;
+      $display("Test with e = 65537 and 64 bit modulus.");
+
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_DATA}, 32'h00010001);
+
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hf077656f);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h3bf9e69b);
+
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'hb6684dc3);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h79a5824b);
+
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_LENGTH}, 32'h00000001);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_LENGTH}, 32'h00000002);
+
+      start_test_cycle_ctr();
+
+      // Start processing and wait for ready.
+      write_word({GENERAL_PREFIX, ADDR_CTRL}, 32'h00000001);
+      wait_ready();
+
+      stop_test_cycle_ctr();
+
+      write_word({GENERAL_PREFIX, ADDR_RESULT_PTR_RST}, 32'h00000000);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h419a024f, read_data);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'hdddf178e, read_data);
+
+      if (success !== 1)
+        begin
+          $display("*** ERROR: e65537_64bit_modulus was NOT successful.");
+          error_ctr = error_ctr + 1;
+        end
+      else
+        $display("*** e65537_64bit_modulus success.");
+    end
+  endtask // e65537_64bit_modulus
+
+
+  //----------------------------------------------------------------
+  // e65537_128bit_modulus()
+  //----------------------------------------------------------------
+  task e65537_128bit_modulus();
+    reg [31 : 0] read_data;
+    begin
+      success = 32'h1;
+      tc_ctr = tc_ctr + 1;
+      $display("Test with e = 65537 and 128 bit modulus.");
+
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_DATA}, 32'h00010001);
+
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hf5e8eee0);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hc06b048a);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h964b2105);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h2c36ad6b);
+
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h956e61b3);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h27997bc4);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h94e7e5c9);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'hb53585cf);
+
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_LENGTH}, 32'h00000001);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_LENGTH}, 32'h00000004);
+
+      start_test_cycle_ctr();
+
+      // Start processing and wait for ready.
+      write_word({GENERAL_PREFIX, ADDR_CTRL}, 32'h00000001);
+      wait_ready();
+
+      stop_test_cycle_ctr();
+
+      write_word({GENERAL_PREFIX, ADDR_RESULT_PTR_RST}, 32'h00000000);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h1e97bff8, read_data);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h60029e6e, read_data);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'hedaef85e, read_data);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'hfb0c6562, read_data);
+
+      if (success !== 1)
+        begin
+          $display("*** ERROR: e65537_128bit_modulus was NOT successful.");
+          error_ctr = error_ctr + 1;
+        end
+      else
+        $display("*** e65537_128bit_modulus success.");
+    end
+  endtask // e65537_128bit_modulus
+
+
+  //----------------------------------------------------------------
+  // e65537_256bit_modulus()
+  //
+  // Task that tests modexp with small exponent and 256 bit modulus.
+  //----------------------------------------------------------------
+  task e65537_256bit_modulus();
+    reg [31 : 0] read_data;
+    begin
+      success = 32'h1;
+      tc_ctr = tc_ctr + 1;
+      $display("Test with e = 65537 and 256 bit modulus.");
+
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_DATA}, 32'h00010001);
+
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'hf169d36e);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'hbe2ce61d);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'hc2e87809);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h4fed15c3);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h7c70eac5);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'ha123e643);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h299b36d2);
+      write_word({GENERAL_PREFIX, ADDR_MESSAGE_DATA}, 32'h788e583b);
+
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_PTR_RST}, 32'h00000000);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hf169d36e);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hbe2ce61d);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'hc2e87809);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h4fed15c3);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h7c70eac5);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'ha123e643);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h299b36d2);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_DATA}, 32'h788e583b);
+
+      write_word({GENERAL_PREFIX, ADDR_EXPONENT_LENGTH}, 32'h00000001);
+      write_word({GENERAL_PREFIX, ADDR_MODULUS_LENGTH}, 32'h00000008);
+
+      start_test_cycle_ctr();
+
+      // Start processing and wait for ready.
+      write_word({GENERAL_PREFIX, ADDR_CTRL}, 32'h00000001);
+      wait_ready();
+
+      stop_test_cycle_ctr();
+
+      write_word({GENERAL_PREFIX, ADDR_RESULT_PTR_RST}, 32'h00000000);
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h0ddc404d, read_data); //TEMPLATE_EXPECTED_VALUES
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h91600596, read_data); //TEMPLATE_EXPECTED_VALUES
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'h7425a8d8, read_data); //TEMPLATE_EXPECTED_VALUES
+      read_word({GENERAL_PREFIX, ADDR_RESULT_DATA}); read_data = tb_read_data; success = success & assertEquals(32'ha066ca56, read_data); //TEMPLATE_EXPECTED_VALUES
+
+      if (success !== 1)
+        begin
+          $display("*** ERROR: e65537_256bit_modulus was NOT successful.");
+          error_ctr = error_ctr + 1;
+        end
+      else
+        $display("*** e65537_256bit_modulus success.");
+    end
+  endtask // e65537_256bit_modulus
+
+
+  //----------------------------------------------------------------
   // main
   //
   // The main test functionality.
@@ -854,8 +1015,11 @@ module tb_modexp();
       tc1();
       tc2();
       tc3();
-      autogenerated_BASIC_33bit();
-      autogenerated_BASIC_128bit();
+//      autogenerated_BASIC_33bit();
+//      autogenerated_BASIC_128bit();
+      e65537_64it_modulus();
+      e65537_128it_modulus();
+      e65537_256bit_modulus();
 
       display_test_results();
 //      dump_memories();