[aes] Rename `NumDelayCyclesStartTrigger` parameter
This commit renames the security-critical parameter
`NumDelayCyclesStartTrigger` to `SecStartTriggerDelay`. The `Sec`
prefix indicates that this parameter is security critical. This
can be leveraged by tools like reggen and topgen.
Signed-off-by: Pirmin Vogel <vogelpi@lowrisc.org>
diff --git a/hw/ip/aes/rtl/aes.sv b/hw/ip/aes/rtl/aes.sv
index 5e89d0a..6c35c3b 100644
--- a/hw/ip/aes/rtl/aes.sv
+++ b/hw/ip/aes/rtl/aes.sv
@@ -10,19 +10,19 @@
import aes_pkg::*;
import aes_reg_pkg::*;
#(
- parameter bit AES192Enable = 1, // Can be 0 (disable), or 1 (enable).
- parameter bit Masking = 0, // Can be 0 (no masking), or
- // 1 (first-order masking) of the cipher
- // core. Masking requires the use of a
- // masked S-Box, see SBoxImpl parameter.
- // Note: currently, constant masks are
- // used, this is of course not secure.
- parameter sbox_impl_e SBoxImpl = SBoxImplLut, // See aes_pkg.sv
- parameter int unsigned NumDelayCyclesStartTrigger = 0, // Manual start trigger delay, useful for
- // SCA measurements. A value of e.g. 40
- // allows the processor to go into sleep
- // before AES starts operation.
- parameter logic [NumAlerts-1:0] AlertAsyncOn = {NumAlerts{1'b1}}
+ parameter bit AES192Enable = 1, // Can be 0 (disable), or 1 (enable).
+ parameter bit Masking = 0, // Can be 0 (no masking), or
+ // 1 (first-order masking) of the cipher
+ // core. Masking requires the use of a
+ // masked S-Box, see SBoxImpl parameter.
+ // Note: currently, constant masks are
+ // used, this is of course not secure.
+ parameter sbox_impl_e SBoxImpl = SBoxImplLut, // See aes_pkg.sv
+ parameter int unsigned SecStartTriggerDelay = 0, // Manual start trigger delay, useful for
+ // SCA measurements. A value of e.g. 40
+ // allows the processor to go into sleep
+ // before AES starts operation.
+ parameter logic [NumAlerts-1:0] AlertAsyncOn = {NumAlerts{1'b1}}
) (
input clk_i,
input rst_ni,
@@ -68,10 +68,10 @@
);
aes_core #(
- .AES192Enable ( AES192Enable ),
- .Masking ( Masking ),
- .SBoxImpl ( SBoxImpl ),
- .NumDelayCyclesStartTrigger ( NumDelayCyclesStartTrigger )
+ .AES192Enable ( AES192Enable ),
+ .Masking ( Masking ),
+ .SBoxImpl ( SBoxImpl ),
+ .SecStartTriggerDelay ( SecStartTriggerDelay )
) u_aes_core (
.clk_i,
.rst_ni,
