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authorPavel V. Shatov (Meister) <meisterpaul1@yandex.ru>2016-10-31 00:14:51 +0300
committerPavel V. Shatov (Meister) <meisterpaul1@yandex.ru>2016-10-31 00:14:51 +0300
commit25e338149fdb8e06c82d99600769a8498a85ef2c (patch)
treecf4b855bcf1083f3cffebf6a98b5aaad45baf362 /bench/tb_curve_doubler_256.v
Initial commit of base point multiplier core for ECDSA curve P-256.
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+//------------------------------------------------------------------------------
+//
+// tb_curve_doubler_256.v
+// -----------------------------------------------------------------------------
+// Testbench for 256-bit curve point doubler.
+//
+// Authors: Pavel Shatov
+//
+// Copyright (c) 2016, NORDUnet A/S
+//
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are met:
+//
+// - Redistributions of source code must retain the above copyright notice,
+// this list of conditions and the following disclaimer.
+//
+// - Redistributions in binary form must reproduce the above copyright notice,
+// this list of conditions and the following disclaimer in the documentation
+// and/or other materials provided with the distribution.
+//
+// - Neither the name of the NORDUnet nor the names of its contributors may be
+// used to endorse or promote products derived from this software without
+// specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+// AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+// IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+// ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE
+// LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+// CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+// SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+// INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+// CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+// ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+// POSSIBILITY OF SUCH DAMAGE.
+//
+//------------------------------------------------------------------------------
+
+//------------------------------------------------------------------------------
+`timescale 1ns / 1ps
+//------------------------------------------------------------------------------
+
+module tb_curve_doubler_256;
+
+
+ //
+ // Test Vectors
+ //
+ localparam [255:0] PX_1 = 256'h6b17d1f2e12c4247f8bce6e563a440f277037d812deb33a0f4a13945d898c296;
+ localparam [255:0] PY_1 = 256'h4fe342e2fe1a7f9b8ee7eb4a7c0f9e162bce33576b315ececbb6406837bf51f5;
+ localparam [255:0] PZ_1 = 256'h0000000000000000000000000000000000000000000000000000000000000001;
+
+ localparam [255:0] RX_1 = 256'h9a978f59acd1b5ad570e7d52dcfcde43804b42274f61ddcf1e7d848391d6c70f;
+ localparam [255:0] RY_1 = 256'h4126885e7f786af905338238e5346d5fe77fc46388668bd0fd59be3190d2f5d1;
+ localparam [255:0] RZ_1 = 256'h9fc685c5fc34ff371dcfd694f81f3c2c579c66aed662bd9d976c80d06f7ea3ea;
+
+ localparam [255:0] PX_2 = 256'h0ec88440c8b00a9e572bf1bceb7d0c5906bd65990a9b7081130bd72e2c136ca0;
+ localparam [255:0] PY_2 = 256'hc0bc77e1339e899101f8e8eccf79c3f7f4bbdd1bf96f6446199bd423026a60d6;
+ localparam [255:0] PZ_2 = 256'hdd27cb52a31d1f6e041accf1103de05ba0a5edd74b738d51fe3397de0e3fc306;
+
+ localparam [255:0] RX_2 = 256'he6afae63e774df21244609cb4c35d17d28b36b8b9fb7c58929af247f34ac72f9;
+ localparam [255:0] RY_2 = 256'h061076db7a5745adc90b2e9eebe0ad6482309690f50b60835c265cf83a1b34eb;
+ localparam [255:0] RZ_2 = 256'h1b6bfd04f2a41d68e85423655db1142d97ebaec0c67c450408f427e35c4f054f;
+
+ localparam [255:0] PX_3 = 256'hb0f824c88ec62df89912ca9ffbcbbb4ffb4d80f8a7d7b4a992273261a2f7be7f;
+ localparam [255:0] PY_3 = 256'h403e34c78c2b816fce2b1f8d73cfeef28113b8de8bda4a447d17b619bef73705;
+ localparam [255:0] PZ_3 = 256'h0e3e81bb8e954f3164ae54a6cffa7fcc9631dfddee55fac61e46415f1f5fe5e2;
+
+ localparam [255:0] RX_3 = 256'hd4e725920c88cc2f57847a315f3b6c180abb278b8fa2a47da3d1a191a8c29e19;
+ localparam [255:0] RY_3 = 256'ha798ad8dbd66c98b53414ab1d04b0f871929a90fea996c88b96d9d68eb8eb0dc;
+ localparam [255:0] RZ_3 = 256'ha7ead72c01294eaf2899bb6b84f7d26417e6758e3db29f3b5c2ca8e9911067f5;
+
+ localparam [255:0] PX_4 = 256'hXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;
+ localparam [255:0] PY_4 = 256'hXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX;
+ localparam [255:0] PZ_4 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+
+ localparam [255:0] RX_4 = 256'h0000000000000000000000000000000000000000000000000000000000000001;
+ localparam [255:0] RY_4 = 256'h0000000000000000000000000000000000000000000000000000000000000001;
+ localparam [255:0] RZ_4 = 256'h0000000000000000000000000000000000000000000000000000000000000000;
+
+ localparam [255:0] Q = 256'hffffffff00000001000000000000000000000000ffffffffffffffffffffffff;
+
+
+
+ //
+ // TODO: Test special cases!
+ //
+
+
+ //
+ // Core Parameters
+ //
+ localparam WORD_COUNTER_WIDTH = 3;
+ localparam OPERAND_NUM_WORDS = 8;
+
+
+ //
+ // Clock (100 MHz)
+ //
+ reg clk = 1'b0;
+ always #5 clk = ~clk;
+
+
+ //
+ // Inputs, Outputs
+ //
+ reg rst_n;
+ reg ena;
+ wire rdy;
+
+
+ //
+ // Buffers (PX, PY, PZ, RX, RY, RZ, Q)
+ //
+ wire [WORD_COUNTER_WIDTH-1:0] core_px_addr;
+ wire [WORD_COUNTER_WIDTH-1:0] core_py_addr;
+ wire [WORD_COUNTER_WIDTH-1:0] core_pz_addr;
+
+ wire [WORD_COUNTER_WIDTH-1:0] core_rx_addr;
+ wire [WORD_COUNTER_WIDTH-1:0] core_ry_addr;
+ wire [WORD_COUNTER_WIDTH-1:0] core_rz_addr;
+
+ wire [WORD_COUNTER_WIDTH-1:0] core_q_addr;
+
+ wire core_rx_wren;
+ wire core_ry_wren;
+ wire core_rz_wren;
+
+ wire [ 32-1:0] core_px_data;
+ wire [ 32-1:0] core_py_data;
+ wire [ 32-1:0] core_pz_data;
+
+ wire [ 32-1:0] core_rx_data_wr;
+ wire [ 32-1:0] core_ry_data_wr;
+ wire [ 32-1:0] core_rz_data_wr;
+
+ wire [ 32-1:0] core_rx_data_rd;
+ wire [ 32-1:0] core_ry_data_rd;
+ wire [ 32-1:0] core_rz_data_rd;
+
+ wire [ 32-1:0] core_q_data;
+
+ reg [WORD_COUNTER_WIDTH-1:0] tb_xyzq_addr;
+ reg tb_xyzq_wren;
+
+ reg [ 31:0] tb_px_data;
+ reg [ 31:0] tb_py_data;
+ reg [ 31:0] tb_pz_data;
+ wire [ 31:0] tb_rx_data;
+ wire [ 31:0] tb_ry_data;
+ wire [ 31:0] tb_rz_data;
+ reg [ 31:0] tb_q_data;
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_px
+ ( .clk(clk),
+ .a_addr(tb_xyzq_addr), .a_wr(tb_xyzq_wren), .a_in(tb_px_data), .a_out(),
+ .b_addr(core_px_addr), .b_out(core_px_data)
+ );
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_py
+ ( .clk(clk),
+ .a_addr(tb_xyzq_addr), .a_wr(tb_xyzq_wren), .a_in(tb_py_data), .a_out(),
+ .b_addr(core_py_addr), .b_out(core_py_data)
+ );
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_pz
+ ( .clk(clk),
+ .a_addr(tb_xyzq_addr), .a_wr(tb_xyzq_wren), .a_in(tb_pz_data), .a_out(),
+ .b_addr(core_pz_addr), .b_out(core_pz_data)
+ );
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_q
+ ( .clk(clk),
+ .a_addr(tb_xyzq_addr), .a_wr(tb_xyzq_wren), .a_in(tb_q_data), .a_out(),
+ .b_addr(core_q_addr), .b_out(core_q_data)
+ );
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_rx
+ ( .clk(clk),
+ .a_addr(core_rx_addr), .a_wr(core_rx_wren), .a_in(core_rx_data_wr), .a_out(core_rx_data_rd),
+ .b_addr(tb_xyzq_addr), .b_out(tb_rx_data)
+ );
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_ry
+ ( .clk(clk),
+ .a_addr(core_ry_addr), .a_wr(core_ry_wren), .a_in(core_ry_data_wr), .a_out(core_ry_data_rd),
+ .b_addr(tb_xyzq_addr), .b_out(tb_ry_data)
+ );
+
+ bram_1rw_1ro_readfirst # (.MEM_WIDTH(32), .MEM_ADDR_BITS(WORD_COUNTER_WIDTH))
+ bram_rz
+ ( .clk(clk),
+ .a_addr(core_rz_addr), .a_wr(core_rz_wren), .a_in(core_rz_data_wr), .a_out(core_rz_data_rd),
+ .b_addr(tb_xyzq_addr), .b_out(tb_rz_data)
+ );
+
+
+ //
+ // Opcode
+ //
+ wire [ 5: 0] dbl_uop_addr;
+ wire [19: 0] dbl_uop;
+
+ uop_dbl_rom dbl_rom
+ (
+ .clk (clk),
+ .addr (dbl_uop_addr),
+ .data (dbl_uop)
+ );
+
+
+ //
+ // UUT
+ //
+ curve_dbl_add_256 uut
+ (
+ .clk (clk),
+ .rst_n (rst_n),
+
+ .ena (ena),
+ .rdy (rdy),
+
+ .uop_addr (dbl_uop_addr),
+ .uop (dbl_uop),
+
+ .px_addr (core_px_addr),
+ .py_addr (core_py_addr),
+ .pz_addr (core_pz_addr),
+ .rx_addr (core_rx_addr),
+ .ry_addr (core_ry_addr),
+ .rz_addr (core_rz_addr),
+ .q_addr (core_q_addr),
+
+ .rx_wren (core_rx_wren),
+ .ry_wren (core_ry_wren),
+ .rz_wren (core_rz_wren),
+
+ .px_din (core_px_data),
+ .py_din (core_py_data),
+ .pz_din (core_pz_data),
+ .rx_din (core_rx_data_rd),
+ .ry_din (core_ry_data_rd),
+ .rz_din (core_rz_data_rd),
+ .rx_dout (core_rx_data_wr),
+ .ry_dout (core_ry_data_wr),
+ .rz_dout (core_rz_data_wr),
+ .q_din (core_q_data)
+ );
+
+
+ //
+ // Testbench Routine
+ //
+ reg ok = 1;
+ initial begin
+
+ /* initialize control inputs */
+ rst_n = 0;
+ ena = 0;
+
+ /* wait for some time */
+ #200;
+
+ /* de-assert reset */
+ rst_n = 1;
+
+ /* wait for some time */
+ #100;
+
+ /* run tests */
+ test_curve_doubler(PX_1, PY_1, PZ_1, RX_1, RY_1, RZ_1);
+ test_curve_doubler(PX_2, PY_2, PZ_2, RX_2, RY_2, RZ_2);
+ test_curve_doubler(PX_3, PY_3, PZ_3, RX_3, RY_3, RZ_3);
+ test_curve_doubler(PX_4, PY_4, PZ_4, RX_4, RY_4, RZ_4);
+
+ /* print result */
+ if (ok) $display("tb_curve_doubler_256: SUCCESS");
+ else $display("tb_curve_doubler_256: FAILURE");
+ //
+// $finish;
+ //
+ end
+
+
+ //
+ // Test Task
+ //
+ reg t_ok;
+
+ integer w;
+
+ task test_curve_doubler;
+
+ input [255:0] px;
+ input [255:0] py;
+ input [255:0] pz;
+
+ input [255:0] rx;
+ input [255:0] ry;
+ input [255:0] rz;
+
+ reg [255:0] px_shreg;
+ reg [255:0] py_shreg;
+ reg [255:0] pz_shreg;
+
+ reg [255:0] rx_shreg;
+ reg [255:0] ry_shreg;
+ reg [255:0] rz_shreg;
+
+ reg [255:0] q_shreg;
+
+ begin
+
+ /* start filling memories */
+ tb_xyzq_wren = 1;
+
+ /* initialize shift registers */
+ px_shreg = px;
+ py_shreg = py;
+ pz_shreg = pz;
+ q_shreg = Q;
+
+ /* write all the words */
+ for (w=0; w<OPERAND_NUM_WORDS; w=w+1) begin
+
+ /* set addresses */
+ tb_xyzq_addr = w[WORD_COUNTER_WIDTH-1:0];
+
+ /* set data words */
+ tb_px_data = px_shreg[31:0];
+ tb_py_data = py_shreg[31:0];
+ tb_pz_data = pz_shreg[31:0];
+ tb_q_data = q_shreg[31:0];
+
+ /* shift inputs */
+ px_shreg = {{32{1'bX}}, px_shreg[255:32]};
+ py_shreg = {{32{1'bX}}, py_shreg[255:32]};
+ pz_shreg = {{32{1'bX}}, pz_shreg[255:32]};
+ q_shreg = {{32{1'bX}}, q_shreg[255:32]};
+
+ /* wait for 1 clock tick */
+ #10;
+
+ end
+
+ /* wipe addresses */
+ tb_xyzq_addr = {WORD_COUNTER_WIDTH{1'bX}};
+
+ /* wipe data words */
+ tb_px_data = {32{1'bX}};
+ tb_py_data = {32{1'bX}};
+ tb_pz_data = {32{1'bX}};
+ tb_q_data = {32{1'bX}};
+
+ /* stop filling memories */
+ tb_xyzq_wren = 0;
+
+ /* start operation */
+ ena = 1;
+
+ /* clear flag */
+ #10 ena = 0;
+
+ /* wait for operation to complete */
+ while (!rdy) #10;
+
+ /* read result */
+ for (w=0; w<OPERAND_NUM_WORDS; w=w+1) begin
+
+ /* set address */
+ tb_xyzq_addr = w[WORD_COUNTER_WIDTH-1:0];
+
+ /* wait for 1 clock tick */
+ #10;
+
+ /* store data word */
+ rx_shreg = {tb_rx_data, rx_shreg[255:32]};
+ ry_shreg = {tb_ry_data, ry_shreg[255:32]};
+ rz_shreg = {tb_rz_data, rz_shreg[255:32]};
+
+ end
+
+ /* compare */
+ t_ok = (rx_shreg == rx) &&
+ (ry_shreg == ry) &&
+ (rz_shreg == rz);
+
+ /* display results */
+ $display("test_curve_doubler(): %s", t_ok ? "OK" : "ERROR");
+
+ /* update global flag */
+ ok = ok && t_ok;
+
+ end
+
+ endtask
+
+
+endmodule
+
+//------------------------------------------------------------------------------
+// End-of-File
+//------------------------------------------------------------------------------