1168404Spjd/* 2168404Spjd * CDDL HEADER START 3168404Spjd * 4168404Spjd * The contents of this file are subject to the terms of the 5185029Spjd * Common Development and Distribution License (the "License"). 6185029Spjd * You may not use this file except in compliance with the License. 7168404Spjd * 8168404Spjd * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE 9168404Spjd * or http://www.opensolaris.org/os/licensing. 10168404Spjd * See the License for the specific language governing permissions 11168404Spjd * and limitations under the License. 12168404Spjd * 13168404Spjd * When distributing Covered Code, include this CDDL HEADER in each 14168404Spjd * file and include the License file at usr/src/OPENSOLARIS.LICENSE. 15168404Spjd * If applicable, add the following below this CDDL HEADER, with the 16168404Spjd * fields enclosed by brackets "[]" replaced with your own identifying 17168404Spjd * information: Portions Copyright [yyyy] [name of copyright owner] 18168404Spjd * 19168404Spjd * CDDL HEADER END 20168404Spjd */ 21168404Spjd/* 22219089Spjd * Copyright 2009 Sun Microsystems, Inc. All rights reserved. 23168404Spjd * Use is subject to license terms. 24168404Spjd */ 25290757Smav/* 26290757Smav * Copyright 2013 Saso Kiselkov. All rights reserved. 27290757Smav */ 28168404Spjd#include <sys/zfs_context.h> 29168404Spjd#include <sys/zio.h> 30219089Spjd#ifdef _KERNEL 31219089Spjd#include <crypto/sha2/sha2.h> 32219089Spjd#else 33219089Spjd#include <sha256.h> 34219089Spjd#endif 35168404Spjd 36290757Smav/*ARGSUSED*/ 37168404Spjdvoid 38290757Smavzio_checksum_SHA256(const void *buf, uint64_t size, 39290757Smav const void *ctx_template, zio_cksum_t *zcp) 40168404Spjd{ 41219089Spjd SHA256_CTX ctx; 42219089Spjd zio_cksum_t tmp; 43168404Spjd 44219089Spjd SHA256_Init(&ctx); 45219089Spjd SHA256_Update(&ctx, buf, size); 46219089Spjd SHA256_Final((unsigned char *)&tmp, &ctx); 47168404Spjd 48219089Spjd /* 49219089Spjd * A prior implementation of this function had a 50219089Spjd * private SHA256 implementation always wrote things out in 51219089Spjd * Big Endian and there wasn't a byteswap variant of it. 52219089Spjd * To preseve on disk compatibility we need to force that 53219089Spjd * behaviour. 54219089Spjd */ 55219089Spjd zcp->zc_word[0] = BE_64(tmp.zc_word[0]); 56219089Spjd zcp->zc_word[1] = BE_64(tmp.zc_word[1]); 57219089Spjd zcp->zc_word[2] = BE_64(tmp.zc_word[2]); 58219089Spjd zcp->zc_word[3] = BE_64(tmp.zc_word[3]); 59168404Spjd} 60290757Smav 61290757Smav#ifdef illumos 62290757Smav/*ARGSUSED*/ 63290757Smavvoid 64290757Smavzio_checksum_SHA512_native(const void *buf, uint64_t size, 65290757Smav const void *ctx_template, zio_cksum_t *zcp) 66290757Smav{ 67290757Smav SHA2_CTX ctx; 68290757Smav 69290757Smav SHA2Init(SHA512_256, &ctx); 70290757Smav SHA2Update(&ctx, buf, size); 71290757Smav SHA2Final(zcp, &ctx); 72290757Smav} 73290757Smav 74290757Smav/*ARGSUSED*/ 75290757Smavvoid 76290757Smavzio_checksum_SHA512_byteswap(const void *buf, uint64_t size, 77290757Smav const void *ctx_template, zio_cksum_t *zcp) 78290757Smav{ 79290757Smav zio_cksum_t tmp; 80290757Smav 81290757Smav zio_checksum_SHA512_native(buf, size, ctx_template, &tmp); 82290757Smav zcp->zc_word[0] = BSWAP_64(tmp.zc_word[0]); 83290757Smav zcp->zc_word[1] = BSWAP_64(tmp.zc_word[1]); 84290757Smav zcp->zc_word[2] = BSWAP_64(tmp.zc_word[2]); 85290757Smav zcp->zc_word[3] = BSWAP_64(tmp.zc_word[3]); 86290757Smav} 87290757Smav#endif 88