Package: crypto_dpi_present_pkg
- File: crypto_dpi_present_pkg.sv
Description
Copyright lowRISC contributors.
Licensed under the Apache License, Version 2.0, see LICENSE for details.
SPDX-License-Identifier: Apache-2.0
Signals
| Name | Type | Description |
|---|---|---|
| key_high | longint unsigned | |
| input | longint unsigned | |
| key_low | longint unsigned | |
| input | longint unsigned | |
| num_rounds | int unsigned | |
| input | int unsigned | |
| key_size_80 | int unsigned | |
| output | int unsigned | |
| key_schedule | bit [NumRounds:0][63:0] | |
| plaintext | longint unsigned | |
| input | longint unsigned | |
| key_high | longint unsigned | |
| input | longint unsigned | |
| key_low | longint unsigned | |
| input | longint unsigned | |
| num_rounds | int unsigned | |
| input | int unsigned | |
| key_size_80 | int unsigned | |
| ciphertext | longint unsigned | |
| input | longint unsigned | |
| key_high | longint unsigned | |
| input | longint unsigned | |
| key_low | longint unsigned | |
| input | longint unsigned | |
| num_rounds | int unsigned | |
| input | int unsigned | |
| key_size_80 | int unsigned |
Constants
| Name | Type | Value | Description |
|---|---|---|---|
| NumRounds | int unsigned | 31 | parameters This is defined here so we can size all arrays properly. |
Functions
- get_keys (input bit [127:0] key,
) return (void)
Description
Helper Functions
- sv_dpi_present_get_key_schedule (input bit [127:0] key,
) return (void)
Description
////////////////////////////////////////////////////
SV wrapper functions to be used by the testbench //
////////////////////////////////////////////////////
This function takes in a 128 bit key by default, it determines how to
split this key for the DPI calls based on the value of key_size_80.
This returns the list of round keys used during the course of the algorithm.
- sv_dpi_present_encrypt (input bit [63:0] plaintext,
) return (void)
Description
This function encrypts the input plaintext with the PRESENT encryption
algorithm using the specified number of rounds.
This produces a list of all intermediate values produced after each round
of the algorithm, including the final encrypted ciphertext value.
- sv_dpi_present_decrypt (input bit [NumRounds-1:0][63:0] ciphertext,
) return (void)
Description
This function decrypts the input ciphertext with the PRESENT decryption
algorithm using the specified number of rounds.
This produces a list of all intermediate values produced after each round
of the algorithm, including the final decrypted plaintext value.