initial import

1 files changed, 24 insertions, 0 deletions

diff --git a/tests/simple/aes_kexp128.v b/tests/simple/aes_kexp128.v
new file mode 100644
index 000000000..3ee034789
--- /dev/null
+++ b/tests/simple/aes_kexp128.v
@@ -0,0 +1,24 @@
+
+// test taken from aes_core from iwls2005
+
+module aes_key_expand_128(clk, kld, key, wo_0, wo_1, wo_2, wo_3);
+
+input		clk, kld;
+input	[15:0]	key;
+output	[3:0]	wo_0, wo_1, wo_2, wo_3;
+reg	[3:0]	w[3:0];
+
+assign wo_0 = w[0];
+assign wo_1 = w[1];
+assign wo_2 = w[2];
+assign wo_3 = w[3];
+
+always @(posedge clk) begin
+	w[0] <= kld ? key[15:12] : w[0];
+	w[1] <= kld ? key[11: 8] : w[0]^w[1];
+	w[2] <= kld ? key[ 7: 4] : w[0]^w[1]^w[2];
+	w[3] <= kld ? key[ 3: 0] : w[0]^w[1]^w[2]^w[3];
+end
+
+endmodule
+