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-rw-r--r--src/rtl/sha1.v39
-rw-r--r--src/rtl/sha1_core.v22
-rw-r--r--src/tb/tb_sha1.v5
-rw-r--r--src/tb/tb_sha1_core.v38
4 files changed, 86 insertions, 18 deletions
diff --git a/src/rtl/sha1.v b/src/rtl/sha1.v
index 16b565e..4e57a29 100644
--- a/src/rtl/sha1.v
+++ b/src/rtl/sha1.v
@@ -64,6 +64,7 @@ module sha1(
localparam ADDR_CTRL = 8'h08;
localparam CTRL_INIT_BIT = 0;
localparam CTRL_NEXT_BIT = 1;
+ localparam CTRL_SET_BIT = 2;
localparam ADDR_STATUS = 8'h09;
localparam STATUS_READY_BIT = 0;
@@ -75,9 +76,12 @@ module sha1(
localparam ADDR_DIGEST0 = 8'h20;
localparam ADDR_DIGEST4 = 8'h24;
+ localparam ADDR_STATE0 = 8'h30;
+ localparam ADDR_STATE4 = 8'h34;
+
localparam CORE_NAME0 = 32'h73686131; // "sha1"
localparam CORE_NAME1 = 32'h20202020; // " "
- localparam CORE_VERSION = 32'h302e3630; // "0.60"
+ localparam CORE_VERSION = 32'h302e3730; // "0.70"
//----------------------------------------------------------------
@@ -89,11 +93,17 @@ module sha1(
reg next_reg;
reg next_new;
+ reg set_reg;
+ reg set_new;
+
reg ready_reg;
reg [31 : 0] block_reg [0 : 15];
reg block_we;
+ reg [31 : 0] state_reg [0 : 4];
+ reg state_we;
+
reg [159 : 0] digest_reg;
reg digest_valid_reg;
@@ -105,6 +115,8 @@ module sha1(
wire core_ready;
wire [511 : 0] core_block;
wire [159 : 0] core_digest;
+ wire [159 : 0] core_state_in;
+ wire [159 : 0] core_state_out;
wire core_digest_valid;
reg [31 : 0] tmp_read_data;
@@ -114,6 +126,9 @@ module sha1(
//----------------------------------------------------------------
// Concurrent connectivity for ports etc.
//----------------------------------------------------------------
+ assign core_state_in = {state_reg[4], state_reg[3], state_reg[2],
+ state_reg[1],state_reg[0]};
+
assign core_block = {block_reg[00], block_reg[01], block_reg[02], block_reg[03],
block_reg[04], block_reg[05], block_reg[06], block_reg[07],
block_reg[08], block_reg[09], block_reg[10], block_reg[11],
@@ -132,9 +147,13 @@ module sha1(
.init(init_reg),
.next(next_reg),
+ .set(set_reg),
.block(core_block),
+ .state_in(core_state_in),
+ .state_out(core_state_out),
+
.ready(core_ready),
.digest(core_digest),
@@ -156,12 +175,16 @@ module sha1(
begin
init_reg <= 1'h0;
next_reg <= 1'h0;
+ set_reg <= 1'h0;
ready_reg <= 1'h0;
digest_reg <= 160'h0;
digest_valid_reg <= 1'h0;
for (i = 0 ; i < 16 ; i = i + 1)
block_reg[i] <= 32'h0;
+
+ for (i = 0 ; i < 5 ; i = i + 1)
+ state_reg[i] <= 32'h0;
end
else
begin
@@ -169,6 +192,10 @@ module sha1(
digest_valid_reg <= core_digest_valid;
init_reg <= init_new;
next_reg <= next_new;
+ set_reg <= set_new;
+
+ if (state_we)
+ state_reg[address[2 : 0]] <= write_data;
if (block_we)
block_reg[address[3 : 0]] <= write_data;
@@ -187,7 +214,9 @@ module sha1(
begin : api
init_new = 0;
next_new = 0;
+ set_new = 1'h0;
block_we = 0;
+ state_we = 0;
tmp_read_data = 32'h0;
tmp_error = 0;
@@ -200,10 +229,14 @@ module sha1(
if ((address >= ADDR_BLOCK0) && (address <= ADDR_BLOCK15))
block_we = 1;
+ if ((address >= ADDR_STATE0) && (address <= ADDR_STATE4))
+ state_we = 1;
+
if (address == ADDR_CTRL)
begin
init_new = write_data[CTRL_INIT_BIT];
next_new = write_data[CTRL_NEXT_BIT];
+ set_new = write_data[CTRL_SET_BIT];
end
end
end // if (write_read)
@@ -212,6 +245,10 @@ module sha1(
if ((address >= ADDR_BLOCK0) && (address <= ADDR_BLOCK15))
tmp_read_data = block_reg[address[3 : 0]];
+ if ((address >= ADDR_STATE0) && (address <= ADDR_STATE4))
+ if (core_ready)
+ tmp_read_data = core_state_out[(4 - (address - ADDR_STATE0)) * 32 +: 32];
+
if ((address >= ADDR_DIGEST0) && (address <= ADDR_DIGEST4))
if (core_ready)
tmp_read_data = digest_reg[(4 - (address - ADDR_DIGEST0)) * 32 +: 32];
diff --git a/src/rtl/sha1_core.v b/src/rtl/sha1_core.v
index d055467..9078018 100644
--- a/src/rtl/sha1_core.v
+++ b/src/rtl/sha1_core.v
@@ -44,9 +44,13 @@ module sha1_core(
input wire init,
input wire next,
+ input wire set,
input wire [511 : 0] block,
+ input wire [159 : 0] state_in,
+ output wire [159 : 0] state_out,
+
output wire ready,
output wire [159 : 0] digest,
@@ -119,6 +123,7 @@ module sha1_core(
reg digest_update;
reg init_state;
reg update_state;
+ reg set_state;
reg first_block;
reg ready_flag;
reg w_init;
@@ -146,6 +151,7 @@ module sha1_core(
// Concurrent connectivity for ports etc.
//----------------------------------------------------------------
assign ready = ready_flag;
+ assign state_out = {e_reg, d_reg, c_reg, b_reg, a_reg};
assign digest = {H0_reg, H1_reg, H2_reg, H3_reg, H4_reg};
assign digest_valid = digest_valid_reg;
@@ -321,6 +327,16 @@ module sha1_core(
e_new = d_reg;
a_e_we = 1;
end
+
+ if (set_state)
+ begin
+ a_new = state_in[031 : 000];
+ b_new = state_in[063 : 032];
+ c_new = state_in[095 : 064];
+ d_new = state_in[127 : 096];
+ e_new = state_in[159 : 128];
+ a_e_we = 1;
+ end
end // state_logic
@@ -359,6 +375,7 @@ module sha1_core(
digest_update = 0;
init_state = 0;
update_state = 0;
+ set_state = 0;
first_block = 0;
ready_flag = 0;
w_init = 0;
@@ -375,6 +392,11 @@ module sha1_core(
begin
ready_flag = 1;
+ if (set)
+ begin
+ set_state = 1'h1;
+ end
+
if (init)
begin
digest_init = 1;
diff --git a/src/tb/tb_sha1.v b/src/tb/tb_sha1.v
index 1bc10e8..c3c8eda 100644
--- a/src/tb/tb_sha1.v
+++ b/src/tb/tb_sha1.v
@@ -100,6 +100,7 @@ module tb_sha1();
reg [7 : 0] tb_address;
reg [31 : 0] tb_data_in;
wire [31 : 0] tb_data_out;
+ wire tb_error;
reg [31 : 0] read_data;
reg [159 : 0] digest_data;
@@ -216,8 +217,8 @@ module tb_sha1();
$display("sha1_ctrl_reg = 0x%01x", dut.core.sha1_ctrl_reg);
$display("digest_init = 0x%01x, digest_update = 0x%01x",
dut.core.digest_init, dut.core.digest_update);
- $display("init_state = 0x%01x, update_state = 0x%01x",
- dut.core.init_state, dut.core.update_state);
+ $display("init_state = 0x%01x, update_state = 0x%01x, set_state = 0x%01x",
+ dut.core.init_state, dut.core.update_state, dut.core.set_state);
$display("first_block = 0x%01x, ready_flag = 0x%01x, w_init = 0x%01x",
dut.core.first_block, dut.core.ready_flag, dut.core.w_init);
$display("round_ctr_inc = 0x%01x, round_ctr_rst = 0x%01x, round_ctr_reg = 0x%02x",
diff --git a/src/tb/tb_sha1_core.v b/src/tb/tb_sha1_core.v
index ce837a1..c14efa5 100644
--- a/src/tb/tb_sha1_core.v
+++ b/src/tb/tb_sha1_core.v
@@ -59,7 +59,10 @@ module tb_sha1_core();
reg tb_reset_n;
reg tb_init;
reg tb_next;
+ reg tb_set;
reg [511 : 0] tb_block;
+ reg [159 : 0] tb_state_in;
+ wire [159 : 0] tb_state_out;
wire tb_ready;
wire [159 : 0] tb_digest;
wire tb_digest_valid;
@@ -70,19 +73,23 @@ module tb_sha1_core();
// Device Under Test.
//----------------------------------------------------------------
sha1_core dut(
- .clk(tb_clk),
- .reset_n(tb_reset_n),
+ .clk(tb_clk),
+ .reset_n(tb_reset_n),
- .init(tb_init),
- .next(tb_next),
+ .init(tb_init),
+ .next(tb_next),
+ .set(tb_set),
- .block(tb_block),
+ .block(tb_block),
- .ready(tb_ready),
+ .state_in(tb_state_in),
+ .state_out(tb_state_out),
- .digest(tb_digest),
- .digest_valid(tb_digest_valid)
- );
+ .ready(tb_ready),
+
+ .digest(tb_digest),
+ .digest_valid(tb_digest_valid)
+ );
//----------------------------------------------------------------
@@ -181,12 +188,13 @@ module tb_sha1_core();
error_ctr = 0;
tc_ctr = 0;
- tb_clk = 0;
- tb_reset_n = 1;
-
- tb_init = 0;
- tb_next = 0;
- tb_block = 512'h00000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000;
+ tb_clk = 0;
+ tb_reset_n = 1;
+ tb_init = 0;
+ tb_next = 0;
+ tb_set = 0;
+ tb_state_in = 160'h0;
+ tb_block = 512'h0;
end
endtask // init_dut
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-22 17:57:50 +0000