Table of Contents
Introduction
The SHA-3 IP core is a high-throughput, area-efficient hardware implementation of the SHA-3/Keccak cryptographic hashing functions, compliant to NISTS’s FIPS 180-4 and FIPS 202 standards.
It’s throughput can optionally be optimized by using input message buffering, which allows it to receive new input while still processing the previous message.Also, the number of hashing rounds per clock is configurable at synthesis time, allowing users to constrain performance to save silicon resources when desired.
The driver is supported for ZynqMP and Versal
HW IP Features
- SHA-3/Keccak cryptographic hashing functions.
Features supported in driver
- SHA-3/Keccak cryptographic hashing functions.
Test Procedure
AF ALG hashing demo exampleCross compile the below example and Need to create the executable file to test the SHA3 functionality./****************************************************************************** * Copyright (c) 2021 Xilinx, Inc. All rights reserved. * SPDX-License-Identifier: MIT ******************************************************************************/ #include <stdio.h> #include <string.h> #include <unistd.h> #include <sys/socket.h> #include <linux/if_alg.h> #include <linux/socket.h> #define SHA384_DIGEST_SZ 48 int main(void) { struct sockaddr_alg sa = { .salg_family = AF_ALG, .salg_type = "hash", .salg_name = "sha3-384" }; unsigned char digest[SHA384_DIGEST_SZ]; char *input = "Hellhash"; /* Input Data should be multiple of 4-bytes */ int i, sockfd, fd; sockfd = socket(AF_ALG, SOCK_SEQPACKET, 0); /* Bind with SHA driver */ bind(sockfd, (struct sockaddr *)&sa, sizeof(sa)); fd = accept(sockfd, NULL, 0); /* Send Sha3 hash request with input data to driver */ write(fd, input, strlen(input)); /* Read the Sha3 digest output */ read(fd, digest, SHA384_DIGEST_SZ); close(fd); close(sockfd); for (i = 0; i < SHA384_DIGEST_SZ; i++) printf("%02x", digest[i]); printf("\n"); return 0; }
Expected Output
# ./af-alg-sha3 9e941e1921f9a188e85e389bc2a566c4fea3be6e9b1345bb1a49f9aea03f21dc0be2395e8381e7f097eb6c667fc113ab
Mainline status
- This driver is available in mainline kernel (https://github.com/torvalds/linux/blob/master/drivers/crypto/xilinx/zynqmp-sha.c)
Change Log
2017.3Summary
- crypto: zynqmp-sha: Adopted SHA3 support for ZynqMP Soc
2017.4
- None.
2018.1
- Uses NIST SHA-3 Padding
2023.1
- Userspace interface for hash algorithms(CONFIG_CRYPTO_USER_API_HASH) and the driver(CONFIG_CRYPTO_DEV_ZYNQMP_SHA3) are enabled by default in the xilinx_defconfig and xilinx_zynqmp_defconfig
- Existing driver is replaced with new driver written using shash framework
- Added support for Versal