[Cryptech-Commits] [core/trng] 01/01: Updates after synthesis of the complete trng.
git at cryptech.is
git at cryptech.is
Thu Sep 18 16:35:15 UTC 2014
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joachim at secworks.se pushed a commit to branch master
in repository core/trng.
commit 830dcc0ea4bfc79dfc7b96d57d8e203096ed0374
Author: Joachim Strömbergson <joachim at secworks.se>
Date: Thu Sep 18 18:35:08 2014 +0200
Updates after synthesis of the complete trng.
---
src/rtl/trng.v | 146 +++++++++++++++++++++++++++++++++++---------------
src/rtl/trng_csprng.v | 4 --
2 files changed, 103 insertions(+), 47 deletions(-)
diff --git a/src/rtl/trng.v b/src/rtl/trng.v
index 0d6b7b0..29a4d11 100644
--- a/src/rtl/trng.v
+++ b/src/rtl/trng.v
@@ -1,4 +1,4 @@
- //======================================================================
+//======================================================================
//
// trng.v
// --------
@@ -51,6 +51,7 @@ module trng(
output wire error,
output wire [7 : 0] debug,
+ input wire debug_update,
output wire security_error
);
@@ -88,6 +89,8 @@ module trng(
parameter ADDR_ENTROPY2_RAW = 8'h60;
parameter ADDR_ENTROPY2_STATS = 8'h61;
+ parameter ADDR_ENTROPY2_OP_A = 8'h68;
+ parameter ADDR_ENTROPY2_OP_B = 8'h69;
parameter TRNG_NAME0 = 32'h74726e67; // "trng"
@@ -126,15 +129,23 @@ module trng(
reg entropy2_enable_new;
reg entropy2_enable_we;
- reg enable_reg;
- reg enable_new;
- reg enable_we;
+ reg [31 : 0] entropy2_op_a_reg;
+ reg [31 : 0] entropy2_op_a_new;
+ reg entropy2_op_a_we;
+
+ reg [31 : 0] entropy2_op_b_reg;
+ reg [31 : 0] entropy2_op_b_new;
+ reg entropy2_op_b_we;
- reg csprng_seed_reg;
- reg csprng_seed_new;
+ reg enable_reg;
+ reg enable_new;
+ reg enable_we;
- reg csprng_rnd_ack_reg;
- reg csprng_rnd_ack_new;
+ reg csprng_seed_reg;
+ reg csprng_seed_new;
+
+ reg csprng_rnd_ack_reg;
+ reg csprng_rnd_ack_new;
@@ -164,6 +175,7 @@ module trng(
wire entropy2_syn;
wire [31 : 0] entropy2_data;
wire entropy2_ack;
+ wire [7 : 0] entropy2_debug;
wire mixer_enable;
wire [511 : 0] mixer_seed_data;
@@ -191,7 +203,7 @@ module trng(
assign read_data = tmp_read_data;
assign error = tmp_error;
assign security_error = 0;
- assign debug = 0;
+ assign debug = entropy2_debug;
assign csprng_num_blocks = {csprng_num_blocks_high_reg,
csprng_num_blocks_low_reg};
@@ -206,6 +218,18 @@ module trng(
assign csprng_seed = csprng_seed_reg;
assign csprng_debug_mode = 0;
+ // Patches to get our first version to work.
+ assign entropy0_enabled = 0;
+ assign entropy0_raw = 32'h00000000;
+ assign entropy0_stats = 32'h00000000;
+ assign entropy0_syn = 0;
+ assign entropy0_data = 32'h00000000;
+
+ assign entropy1_enabled = 1;
+
+ assign entropy2_enabled = 1;
+ assign entropy2_stats = 32'h00000000;
+
//----------------------------------------------------------------
// core instantiations.
@@ -259,52 +283,59 @@ module trng(
.rnd_ack(csprng_rnd_ack_reg)
);
- pseudo_entropy entropy0(
- .clk(clk),
- .reset_n(reset_n),
-
- .enable(entropy0_enable),
-
- .raw_entropy(entropy0_raw),
- .stats(entropy0_stats),
-
- .enabled(entropy0_enabled),
- .entropy_syn(entropy0_syn),
- .entropy_data(entropy0_data),
- .entropy_ack(entropy0_ack)
- );
+// pseudo_entropy entropy0(
+// .clk(clk),
+// .reset_n(reset_n),
+//
+// .enable(entropy0_enable),
+//
+// .raw_entropy(entropy0_raw),
+// .stats(entropy0_stats),
+//
+// .enabled(entropy0_enabled),
+// .entropy_syn(entropy0_syn),
+// .entropy_data(entropy0_data),
+// .entropy_ack(entropy0_ack)
+// );
- avalance_entropy_core entropy1(
+ avalanche_entropy_core entropy1(
.clk(clk),
.reset_n(reset_n),
- .enable(entropy1_enable),
-
.noise(avalanche_noise),
+ .sampled_noise(),
+ .entropy(),
- .raw_entropy(entropy1_raw),
- .stats(entropy1_stats),
-
- .enabled(entropy1_enabled),
.entropy_syn(entropy1_syn),
.entropy_data(entropy1_data),
- .entropy_ack(entropy1_ack)
+ .entropy_ack(entropy1_ack),
+
+ .led(),
+ .debug_data(entropy1_raw),
+ .debug_clk(),
+
+ .delta_data(entropy1_stats),
+ .delta_clk()
);
- ringosc_entropy entropy2(
- .clk(clk),
- .reset_n(reset_n),
+ rosc_entropy_core entropy2(
+ .clk(clk),
+ .reset_n(reset_n),
- .enable(entropy2_enable),
+ .enable(entropy2_enable),
- .raw_entropy(entropy2_raw),
- .stats(entropy2_stats),
+ .opa(entropy2_op_a_reg),
+ .opb(entropy2_op_b_reg),
- .enabled(entropy2_enabled),
- .entropy_syn(entropy2_syn),
- .entropy_data(entropy2_data),
- .entropy_ack(entropy2_ack)
- );
+ .entropy(entropy2_raw),
+
+ .rnd_data(entropy2_data),
+ .rnd_valid(entropy2_syn),
+ .rnd_ack(entropy2_ack),
+
+ .debug(entropy2_debug),
+ .debug_update(debug_update)
+ );
//----------------------------------------------------------------
@@ -321,6 +352,8 @@ module trng(
entropy0_enable_reg <= 1;
entropy1_enable_reg <= 1;
entropy2_enable_reg <= 1;
+ entropy2_op_a_reg <= 32'h01010101;
+ entropy2_op_a_reg <= 32'h10101010;
enable_reg <= 1;
csprng_rnd_ack_reg <= 0;
csprng_seed_reg <= 0;
@@ -328,7 +361,6 @@ module trng(
csprng_num_blocks_low_reg <= CSPRNG_DEFAULT_NUM_BLOCKS[31 : 0];
csprng_num_blocks_high_reg <= CSPRNG_DEFAULT_NUM_BLOCKS[63 : 32];
end
-
else
begin
csprng_rnd_ack_reg <= csprng_rnd_ack_new;
@@ -349,6 +381,16 @@ module trng(
entropy2_enable_reg <= entropy2_enable_new;
end
+ if (entropy2_op_a_we)
+ begin
+ entropy2_op_a_reg <= entropy2_op_a_new;
+ end
+
+ if (entropy2_op_b_we)
+ begin
+ entropy2_op_b_reg <= entropy2_op_b_new;
+ end
+
if (enable_we)
begin
enable_reg <= enable_new;
@@ -386,6 +428,10 @@ module trng(
entropy1_enable_we = 0;
entropy2_enable_new = 0;
entropy2_enable_we = 0;
+ entropy2_op_a_new = 32'h00000000;
+ entropy2_op_a_we = 0;
+ entropy2_op_b_new = 32'h00000000;
+ entropy2_op_b_we = 0;
enable_new = 0;
enable_we = 0;
csprng_seed_new = 0;
@@ -404,6 +450,7 @@ module trng(
begin
if (we)
begin
+ // Write operations.
case (address)
// Write operations.
ADDR_TRNG_CTRL:
@@ -437,6 +484,18 @@ module trng(
csprng_num_blocks_high_we = 1;
end
+ ADDR_ENTROPY2_OP_A:
+ begin
+ entropy2_op_a_new = write_data;
+ entropy2_op_a_we = 1;
+ end
+
+ ADDR_ENTROPY2_OP_B:
+ begin
+ entropy2_op_b_new = write_data;
+ entropy2_op_b_we = 1;
+ end
+
default:
begin
tmp_error = 1;
@@ -446,6 +505,7 @@ module trng(
else
begin
+ // Read operations.
case (address)
// Read operations.
ADDR_NAME0:
diff --git a/src/rtl/trng_csprng.v b/src/rtl/trng_csprng.v
index 1bdc737..f9869db 100644
--- a/src/rtl/trng_csprng.v
+++ b/src/rtl/trng_csprng.v
@@ -136,8 +136,6 @@ module trng_csprng(
wire cipher_data_out_valid;
wire cipher_ready;
- reg discard_outputs;
-
wire fifo_more_data;
reg fifo_discard;
wire fifo_rnd_syn;
@@ -323,7 +321,6 @@ module trng_csprng(
ready_we = 0;
error_new = 0;
error_we = 0;
- discard_outputs = 0;
seed_ack_new = 0;
more_seed_new = 0;
fifo_discard = 0;
@@ -498,7 +495,6 @@ module trng_csprng(
cipher_block_new = {16{32'h00000000}};
cipher_block_we = 1;
block_ctr_rst = 1;
- discard_outputs = 1;
csprng_ctrl_new = CTRL_IDLE;
csprng_ctrl_we = 1;
end
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