-- Round 1, Step 1
	Inst_func1: func1 GENERIC MAP(
		rotate_left_bits => 7
	)
	PORT MAP(
		a_i => buf0,
		b_i => buf1,
		c_i => buf2,
		d_i => buf3,
		x_i => input(0),
		ac_i => x"D76AA478",
		result_o => step1
	);

	-- Round 1, Step 2
	Inst_func2: func1 GENERIC MAP(
		rotate_left_bits => 12
	)
	PORT MAP(
		a_i => buf3,
		b_i => step1,
		c_i => buf1,
		d_i => buf2,
		x_i => input(1),
		ac_i => x"E8C7B756",
		result_o => step2
	);

	-- Round 1, Step 3
	-- step1 buf1 buf2 step2
	Inst_func3: func1 GENERIC MAP(
		rotate_left_bits => 17
	)
	PORT MAP(
		a_i => buf2,
		b_i => step2,
		c_i => step1,
		d_i => buf1,
		x_i => input(2),
		ac_i => x"242070DB",
		result_o => step3
	);

	-- Round 1, Step 4
	-- step1 buf1 step3 step2
	Inst_func4: func1opt GENERIC MAP(
		rotate_left_bits => 22
	)
	PORT MAP(
		a_i => buf1,
		b_i => step3,
		c_i => step2,
		d_i => step1,
		ac_i => x"C1BDCEEE",
		result_o => step4
	);

	-- Round 1, Step 5
	-- step1 step4 step3 step2
	Inst_func5: func1opt GENERIC MAP(
		rotate_left_bits => 7
	)
	PORT MAP(
		a_i => step1,
		b_i => step4,
		c_i => step3,
		d_i => step2,
		ac_i => x"F57C0FAF",
		result_o => step5
	);

	-- Round 1, Step 6
	-- step5 step4 step3 step2
	Inst_func6: func1opt GENERIC MAP(
		rotate_left_bits => 12
	)
	PORT MAP(
		a_i => step2,
		b_i => step5,
		c_i => step4,
		d_i => step3,
		ac_i => x"4787c62a",
		result_o => step6
	);

	-- Round 1, Step 7
	-- step5 step4 step3 step2
	Inst_func7: func1opt GENERIC MAP(
		rotate_left_bits => 17
	)
	PORT MAP(
		a_i => step3,
		b_i => step6,
		c_i => step5,
		d_i => step4,
		ac_i => x"a8304613",
		result_o => step7
	);

	-- Round 1, Step 8
	-- step5 step4 step3 step2
	Inst_func8: func1opt GENERIC MAP(
		rotate_left_bits => 22
	)
	PORT MAP(
		a_i => step4,
		b_i => step7,
		c_i => step6,
		d_i => step5,
		ac_i => x"fd469501",
		result_o => step8
	);

	-- Round 1, Step 9
	-- step5 step4 step3 step2
	Inst_func9: func1opt GENERIC MAP(
		rotate_left_bits => 7
	)
	PORT MAP(
		a_i => step5,
		b_i => step8,
		c_i => step7,
		d_i => step6,
		ac_i => x"698098d8",
		result_o => step9
	);

	-- Round 1, Step 10
	-- step5 step4 step3 step2
	Inst_func10: func1opt GENERIC MAP(
		rotate_left_bits => 12
	)
	PORT MAP(
		a_i => step6,
		b_i => step9,
		c_i => step8,
		d_i => step7,
		ac_i => x"8b44f7af",
		result_o => step10
	);

	-- Round 1, Step 11
	-- step5 step4 step3 step2
	Inst_func11: func1opt GENERIC MAP(
		rotate_left_bits => 17
	)
	PORT MAP(
		a_i => step7,
		b_i => step10,
		c_i => step9,
		d_i => step8,
		ac_i => x"ffff5bb1",
		result_o => step11
	);

	-- Round 1, Step 12
	-- step5 step4 step3 step2
	Inst_func12: func1opt GENERIC MAP(
		rotate_left_bits => 22
	)
	PORT MAP(
		a_i => step8,
		b_i => step11,
		c_i => step10,
		d_i => step9,
		ac_i => x"895cd7be",
		result_o => step12
	);

	-- Round 1, Step 13
	-- step5 step4 step3 step2
	Inst_func13: func1opt GENERIC MAP(
		rotate_left_bits => 7
	)
	PORT MAP(
		a_i => step9,
		b_i => step12,
		c_i => step11,
		d_i => step10,
		ac_i => x"6b901122",
		result_o => step13
	);

	-- Round 1, Step 14
	-- step5 step4 step3 step2
	Inst_func14: func1opt GENERIC MAP(
		rotate_left_bits => 12
	)
	PORT MAP(
		a_i => step10,
		b_i => step13,
		c_i => step12,
		d_i => step11,
		ac_i => x"fd987193",
		result_o => step14
	);

	-- Round 1, Step 15
	-- step5 step4 step3 step2
	Inst_func15: func1 GENERIC MAP(
		rotate_left_bits => 17
	)
	PORT MAP(
		a_i => step11,
		b_i => step14,
		c_i => step13,
		d_i => step12,
		x_i => input(14),
		ac_i => x"a679438e",
		result_o => step15
	);

	-- Round 1, Step 16
	-- step5 step4 step3 step2
	Inst_func16: func1 GENERIC MAP(
		rotate_left_bits => 22
	)
	PORT MAP(
		a_i => step12,
		b_i => step15,
		c_i => step14,
		d_i => step13,
		x_i => input(15),
		ac_i => x"49b40821",
		result_o => step16
	);