帮我生成AES128的Verilog module 
时间: 2023-05-24 22:03:37 浏览: 13
Sure, here's a basic implementation of AES128 in Verilog:
```
module AES128(
input [127:0] key,
input [127:0] plaintext,
output [127:0] ciphertext
);
// Key schedule initialization
reg [31:0] w[43:0];
generate
// First round from key
begin
w[0][31:0] = key[127:96];
w[0][31:0] = key[95:64];
w[0][31:0] = key[63:32];
w[0][31:0] = key[31:0];
end
// Subsequent rounds
for (i = 1; i < 44; i = i + 1) begin
if (i mod 4 == 0) begin
w[i][31:0] = w[i-4][7:0] ^ w[i-1][23:16] ^
w[i-1][15:8] ^ w[i-1][7:0] ^
rcon[i/4];
end else begin
w[i][31:0] = w[i-4][31:0] ^ w[i-1][23:0];
end
end
endgenerate
// Encryption loop
reg [127:0] state;
assign state = plaintext;
reg [3:0] round;
reg [31:0] temp;
for (round = 0; round < 10; round = round + 1) begin
// SubBytes
state[7:0] = sbox[state[7:0]];
state[15:8] = sbox[state[15:8]];
state[23:16] = sbox[state[23:16]];
state[31:24] = sbox[state[31:24]];
state[39:32] = sbox[state[39:32]];
state[47:40] = sbox[state[47:40]];
state[55:48] = sbox[state[55:48]];
state[63:56] = sbox[state[63:56]];
state[71:64] = sbox[state[71:64]];
state[79:72] = sbox[state[79:72]];
state[87:80] = sbox[state[87:80]];
state[95:88] = sbox[state[95:88]];
state[103:96] = sbox[state[103:96]];
state[111:104] = sbox[state[111:104]];
state[119:112] = sbox[state[119:112]];
state[127:120] = sbox[state[127:120]];
// ShiftRows
temp[31:0] = state[31:0];
state[31:0] = {temp[9:0], temp[31:10]};
temp[31:0] = state[63:32];
state[63:32] = {temp[18:0], temp[31:19]};
temp[31:0] = state[95:64];
state[95:64] = {temp[27:0], temp[31:28]};
temp[31:0] = state[127:96];
state[127:96] = {temp[36:0], temp[31:37]};
// MixColumns
for (i = 0; i < 16; i = i + 4) begin
temp = (state[i+3] << 24) |
(state[i+2] << 16) |
(state[i+1] << 8) |
state[i];
temp = mixcolumns[temp[31:0]] ^
mixcolumns[temp[23:16]] ^
mixcolumns[temp[15:8]] ^
mixcolumns[temp[7:0]];
state[i] = temp[7:0];
state[i+1] = temp[15:8];
state[i+2] = temp[23:16];
state[i+3] = temp[31:24];
end
// AddRoundKey
state = state ^ w[round*4][127:0];
state = state ^ w[round*4+1][127:0];
state = state ^ w[round*4+2][127:0];
state = state ^ w[round*4+3][127:0];
end
// Final AddRoundKey
state = state ^ w[40][127:0];
state = state ^ w[41][127:0];
state = state ^ w[42][127:0];
assign ciphertext = state;
endmodule
```
Note that this is a very basic implementation and could be improved upon in many ways (e.g. using pipelining or optimizing for specific FPGAs). It is also missing the S-box and Rcon values, which would need to be provided in the module or loaded from memory during synthesis.
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