From cd8f45d313fe760d7f71a425bdbb567afac219d1 Mon Sep 17 00:00:00 2001
From: "Pavel V. Shatov" <meisterpaul1@yandex.ru>
Date: Thu, 28 May 2015 01:51:26 +0400
Subject: Initial version of GOST 34.11-2012 (aka Streebog) hash core

---
 streebog_hash/tb/streebog_tb.v | 198 +++++++++++++++++++++++++++++++++++++++++
 1 file changed, 198 insertions(+)
 create mode 100644 streebog_hash/tb/streebog_tb.v

(limited to 'streebog_hash/tb/streebog_tb.v')

diff --git a/streebog_hash/tb/streebog_tb.v b/streebog_hash/tb/streebog_tb.v
new file mode 100644
index 0000000..291f11c
--- /dev/null
+++ b/streebog_hash/tb/streebog_tb.v
@@ -0,0 +1,198 @@
+`timescale 1ns / 1ps
+
+module streebog_tb;
+
+
+	localparam	STREEBOG_MODE_SHORT	= 1;
+	localparam	STREEBOG_MODE_LONG	= 0;
+	
+		// short message that fits into one block
+	localparam	[511:0]	MSG_SINGLE						= 512'h01323130393837363534333231303938373635343332313039383736353433323130393837363534333231303938373635343332313039383736353433323130;
+	
+		// length of short message in bits
+	localparam	[  9:0]	MSG_SINGLE_LENGTH				= 10'd504;
+	
+		// correct 512-bit digest of short message
+	localparam	[511:0]	MSG_SINGLE_DIGEST_LONG		= 512'h486f64c1917879417fef082b3381a4e211c324f074654c38823a7b76f830ad00fa1fbae42b1285c0352f227524bc9ab16254288dd6863dccd5b9f54a1ad0541b;
+	
+		// correct 256-bit digest of short message
+	localparam	[255:0]	MSG_SINGLE_DIGEST_SHORT		= 256'h00557be5e584fd52a449b16b0251d05d27f94ab76cbaa6da890b59d8ef1e159d;
+	
+	
+		// first block of long message
+	localparam	[511:0]	MSG_DOUBLE_FIRST				= 512'hfbeafaebef20fffbf0e1e0f0f520e0ed20e8ece0ebe5f0f2f120fff0eeec20f120faf2fee5e2202ce8f6f3ede220e8e6eee1e8f0f2d1202ce8f0f2e5e220e5d1;
+	
+		// second block of long message
+	localparam	[511:0]	MSG_DOUBLE_SECOND				= 512'h0000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000001fbe2e5f0eee3c820;
+	
+		// length of first part of long message in bits
+	localparam	[  9:0]	MSG_DOUBLE_FIRST_LENGTH		= 10'd512;
+	
+		// length of second part of long message in bits
+	localparam	[  9:0]	MSG_DOUBLE_SECOND_LENGTH	= 10'd64;
+	
+		// correct 512-bit digest of long message
+	localparam	[511:0]	MSG_DOUBLE_DIGEST_LONG		= 512'h28fbc9bada033b1460642bdcddb90c3fb3e56c497ccd0f62b8a2ad4935e85f037613966de4ee00531ae60f3b5a47f8dae06915d5f2f194996fcabf2622e6881e;
+	
+		// correct 256-bit digest of short message
+	localparam	[511:0]	MSG_DOUBLE_DIGEST_SHORT		= 256'h508f7e553c06501d749a66fc28c6cac0b005746d97537fa85d9e40904efed29d;
+	
+	
+		//
+		// Inputs
+		//
+	reg				clock;
+	reg	[511:0]	block;
+	reg	[  9:0]	block_length;
+	reg				init		= 0;
+	reg				update	= 0;
+	reg				final		= 0;
+	reg				short_mode;
+
+
+		//
+		// Outputs
+		//
+	wire	[511:0]	digest;
+	wire				digest_valid;
+	wire				ready;
+
+
+		//
+		// UUT
+		//
+	streebog_hash_top uut
+	(
+		.clock			(clock), 
+		
+		.block			(block), 
+		.block_length	(block_length), 
+		.init				(init), 
+		.update			(update), 
+		.final			(final), 
+		.short_mode		(short_mode), 
+		.digest			(digest), 
+		.digest_valid	(digest_valid), 
+		.ready			(ready)
+	);
+	
+		//
+		// Clock
+		//
+	initial clock = 1'b0;
+	always #5 clock = ~clock;
+	
+	reg	[511:0]	hash;
+	wire	[255:0]	hash_short = hash[511:256];
+
+	initial begin
+		//
+		#100;
+		//
+		$display("Checking 512-bit mode on short message...");
+		//
+		streebog_init(STREEBOG_MODE_LONG);
+		streebog_set_block(MSG_SINGLE, MSG_SINGLE_LENGTH);
+		streebog_update();
+		streebog_final();
+		//
+		if (hash == MSG_SINGLE_DIGEST_LONG) $display("OK");
+		else $display("ERROR: hash == %0128h", hash);
+		//
+		#100;
+		//
+		$display("Checking 256-bit mode on short message...");
+		//
+		streebog_init(STREEBOG_MODE_SHORT);
+		streebog_set_block(MSG_SINGLE, MSG_SINGLE_LENGTH);
+		streebog_update();
+		streebog_final();
+		//
+		if (hash_short == MSG_SINGLE_DIGEST_SHORT) $display("OK");
+		else $display("ERROR: hash_short == %064h", hash_short);
+		//
+		#100;
+		//
+		$display("Checking 512-bit mode on long message...");
+		//
+		streebog_init(STREEBOG_MODE_LONG);
+		streebog_set_block(MSG_DOUBLE_FIRST, MSG_DOUBLE_FIRST_LENGTH);
+		streebog_update();
+		streebog_set_block(MSG_DOUBLE_SECOND, MSG_DOUBLE_SECOND_LENGTH);
+		streebog_update();		
+		streebog_final();
+		//
+		if (hash == MSG_DOUBLE_DIGEST_LONG) $display("OK");
+		else $display("ERROR: hash == %0128h", hash);		
+		//
+		#100;
+		//
+		$display("Checking 256-bit mode on long message...");
+		//
+		streebog_init(STREEBOG_MODE_SHORT);
+		streebog_set_block(MSG_DOUBLE_FIRST, MSG_DOUBLE_FIRST_LENGTH);
+		streebog_update();
+		streebog_set_block(MSG_DOUBLE_SECOND, MSG_DOUBLE_SECOND_LENGTH);
+		streebog_update();		
+		streebog_final();
+		//
+		if (hash_short == MSG_DOUBLE_DIGEST_SHORT) $display("OK");
+		else $display("ERROR: hash_short == %064h", hash_short);
+		//
+		#100;
+		//
+		$finish;
+	end
+      
+		
+	task streebog_init;
+		input	use_short_mode;
+		begin
+			short_mode	= use_short_mode;
+			init			= 1;
+			#10;
+			init			= 0;
+			#10;
+		end
+	endtask
+	
+	
+	task streebog_set_block;
+		input		[511:0]	new_block;
+		input		[  9:0]	new_block_length;
+		begin
+			block				= new_block;
+			block_length	= new_block_length;
+			
+		end
+	endtask;
+	
+	
+	task streebog_update;
+		begin
+			update	= 1;
+			#10;
+			update	= 0;
+			#10
+			while (!ready) #10;
+			#10;
+		end
+	endtask
+	
+	
+	task streebog_final;
+		begin
+			final		= 1;
+			#10;
+			final		= 0;
+			#10
+			while (!digest_valid) #10;
+			hash = digest;
+			#10;
+			while (!ready) #10;
+			#10;
+		end
+	endtask
+	
+endmodule
+
-- 
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