Entity: keymgr_kmac_if

• File: keymgr_kmac_if.sv

Diagram

Description

Ports

Port name	Direction	Type	Description
clk_i	input
rst_ni	input
adv_data_i	input	[AdvDataWidth-1:0]	data input interfaces
id_data_i	input	[IdDataWidth-1:0]
gen_data_i	input	[GenDataWidth-1:0]
inputs_invalid_i	input	[3:0]
inputs_invalid_o	output
adv_en_i	input		keymgr control to select appropriate inputs
id_en_i	input
gen_en_i	input
done_o	output
data_o	output	[Shares-1:0]
kmac_data_o	output		actual connection to kmac
kmac_data_i	input
prng_en_o	output		entropy input
entropy_i	input	[Shares-1:0][RandWidth-1:0]
fsm_error_o	output		error outputs
kmac_error_o	output
cmd_error_o	output

Signals

Name	Type	Description
id_data	logic [MaxRounds-1:0][KmacDataIfWidth-1:0]
gen_data	logic [MaxRounds-1:0][KmacDataIfWidth-1:0]
cnt	logic [CntWidth-1:0]
rounds	logic [CntWidth-1:0]
decoy_data	logic [KmacDataIfWidth-1:0]
valid	logic
last	logic
strb	logic [IfBytes-1:0]
cnt_clr	logic
cnt_set	logic
cnt_en	logic
start	logic
inputs_invalid_d	logic [3:0]
inputs_invalid_q	logic [3:0]
clr_err	logic
state_q	data_state_e
state_d	data_state_e
cnt_err	logic
state_raw_q	logic [StateWidth-1:0]	This primitive is used to place a size-only constraint on the flops in order to prevent FSM state encoding optimizations.
adv_sel	logic [CntWidth-1:0]
id_sel	logic [CntWidth-1:0]
gen_sel	logic [CntWidth-1:0]
enables	logic [2:0]	the enables must be 1 hot
enables_sub	logic [2:0]	the enables must be 1 hot
one_hot_err_q	logic	if a one hot error occurs, latch onto it permanently
one_hot_err_d	logic	if a one hot error occurs, latch onto it permanently

Constants

Name	Type	Value	Description
StateWidth	int	10	Encoding generated with: $ ./util/design/sparse-fsm-encode.py -d 5 -m 6 -n 10 \ -s 2292624416 --language=sv Hamming distance histogram: 0: -- 1: -- 2: -- 3: -- 4: -- 5:
AdvRem	int	AdvDataWidth % KmacDataIfWidth
IdRem	int	IdDataWidth % KmacDataIfWidth
GenRem	int	GenDataWidth % KmacDataIfWidth
AdvRounds	int	KmacDataIfWidth	Number of kmac transactions required
IdRounds	int	KmacDataIfWidth
GenRounds	int	KmacDataIfWidth
MaxRounds	int	KDFMaxWidth / KmacDataIfWidth
CntWidth	int	$clog2(MaxRounds)	calculated parameters for number of roudns and interface width
IfBytes	int	KmacDataIfWidth / 8
DecoyCopies	int	KmacDataIfWidth / 32
DecoyOutputCopies	int	Shares
LastAdvRoundInt	int unsigned	AdvRounds - 1
LastIdRoundInt	int unsigned	IdRounds - 1
LastGenRoundInt	int unsigned	GenRounds - 1
LastAdvRound	bit [CntWidth-1:0]	undefined
LastIdRound	bit [CntWidth-1:0]	undefined
LastGenRound	bit [CntWidth-1:0]	undefined
AdvByteMask	logic [IfBytes-1:0]	undefined	byte mask for the last transfer
IdByteMask	logic [IfBytes-1:0]	undefined
GenByteMask	logic [IfBytes-1:0]	logic [MaxRounds-1:0][KmacDataIfWidth-1:0]

Types

Name	Type	Description
data_state_e	enum logic [StateWidth-1:0] { StIdle = 10'b1110100010, StTx = 10'b0010011011, StTxLast = 10'b0101000000, StOpWait = 10'b1000101001, StClean = 10'b1111111101, StError = 10'b0011101110 }

Processes

• unnamed: ( @(posedge clk_i or negedge rst_ni) )

• unnamed: ( )

• unnamed: ( )

• unnamed: ( )

• unnamed: ( @(posedge clk_i or negedge rst_ni) )

Instantiations

• u_cnt: keymgr_cnt

• u_state_regs: prim_flop