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46 lines
1.4 KiB
46 lines
1.4 KiB
library ieee ;
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use ieee.std_logic_1164.all;
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package uart_aes_ref is
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procedure cryptData(datain : in std_logic_vector(0 to 127);
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key : in std_logic_vector(0 to 127);
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iv : in std_logic_vector(0 to 127);
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start : in boolean;
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final : in boolean;
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dataout : out std_logic_vector(0 to 127);
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bytelen : in integer);
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attribute foreign of cryptData: procedure is "VHPIDIRECT cryptData";
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function swap (datain : std_logic_vector(0 to 127)) return std_logic_vector;
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end package;
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package body uart_aes_ref is
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procedure cryptData(datain : in std_logic_vector(0 to 127);
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key : in std_logic_vector(0 to 127);
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iv : in std_logic_vector(0 to 127);
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start : in boolean;
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final : in boolean;
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dataout : out std_logic_vector(0 to 127);
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bytelen : in integer) is
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begin
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report "VHPIDIRECT cryptData" severity failure;
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end procedure;
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function swap (datain : std_logic_vector(0 to 127)) return std_logic_vector is
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variable v_data : std_logic_vector(0 to 127);
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begin
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for i in 0 to 15 loop
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for y in 0 to 7 loop
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v_data((i*8)+y) := datain((i*8)+7-y);
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end loop;
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end loop;
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return v_data;
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end function;
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end package body;
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