mirror of
https://git.proxmox.com/git/mirror_zfs.git
synced 2024-12-30 21:09:38 +03:00
010d12474c
- Add two new module parameters to icp (icp_aes_impl, icp_gcm_impl) that control the crypto implementation. At the moment there is a choice between generic and aesni (on platforms that support it). - This enables support for AES-NI and PCLMULQDQ-NI on AMD Family 15h (bulldozer) and newer CPUs (zen). - Modify aes_key_t to track what implementation it was generated with as key schedules generated with various implementations are not necessarily interchangable. Reviewed by: Gvozden Neskovic <neskovic@gmail.com> Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov> Reviewed-by: Tom Caputi <tcaputi@datto.com> Reviewed-by: Richard Laager <rlaager@wiktel.com> Signed-off-by: Nathaniel R. Lewis <linux.robotdude@gmail.com> Closes #7102 Closes #7103
84 lines
2.1 KiB
C
84 lines
2.1 KiB
C
/*
|
|
* CDDL HEADER START
|
|
*
|
|
* The contents of this file are subject to the terms of the
|
|
* Common Development and Distribution License (the "License").
|
|
* You may not use this file except in compliance with the License.
|
|
*
|
|
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
|
|
* or http://www.opensolaris.org/os/licensing.
|
|
* See the License for the specific language governing permissions
|
|
* and limitations under the License.
|
|
*
|
|
* When distributing Covered Code, include this CDDL HEADER in each
|
|
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
|
|
* If applicable, add the following below this CDDL HEADER, with the
|
|
* fields enclosed by brackets "[]" replaced with your own identifying
|
|
* information: Portions Copyright [yyyy] [name of copyright owner]
|
|
*
|
|
* CDDL HEADER END
|
|
*/
|
|
/*
|
|
* Copyright (c) 2003, 2010, Oracle and/or its affiliates. All rights reserved.
|
|
*/
|
|
|
|
#include <modes/gcm_impl.h>
|
|
|
|
struct aes_block {
|
|
uint64_t a;
|
|
uint64_t b;
|
|
};
|
|
|
|
/*
|
|
* Perform a carry-less multiplication (that is, use XOR instead of the
|
|
* multiply operator) on *x_in and *y and place the result in *res.
|
|
*
|
|
* Byte swap the input (*x_in and *y) and the output (*res).
|
|
*
|
|
* Note: x_in, y, and res all point to 16-byte numbers (an array of two
|
|
* 64-bit integers).
|
|
*/
|
|
static void
|
|
gcm_generic_mul(uint64_t *x_in, uint64_t *y, uint64_t *res)
|
|
{
|
|
static const uint64_t R = 0xe100000000000000ULL;
|
|
struct aes_block z = {0, 0};
|
|
struct aes_block v;
|
|
uint64_t x;
|
|
int i, j;
|
|
|
|
v.a = ntohll(y[0]);
|
|
v.b = ntohll(y[1]);
|
|
|
|
for (j = 0; j < 2; j++) {
|
|
x = ntohll(x_in[j]);
|
|
for (i = 0; i < 64; i++, x <<= 1) {
|
|
if (x & 0x8000000000000000ULL) {
|
|
z.a ^= v.a;
|
|
z.b ^= v.b;
|
|
}
|
|
if (v.b & 1ULL) {
|
|
v.b = (v.a << 63)|(v.b >> 1);
|
|
v.a = (v.a >> 1) ^ R;
|
|
} else {
|
|
v.b = (v.a << 63)|(v.b >> 1);
|
|
v.a = v.a >> 1;
|
|
}
|
|
}
|
|
}
|
|
res[0] = htonll(z.a);
|
|
res[1] = htonll(z.b);
|
|
}
|
|
|
|
static boolean_t
|
|
gcm_generic_will_work(void)
|
|
{
|
|
return (B_TRUE);
|
|
}
|
|
|
|
const gcm_impl_ops_t gcm_generic_impl = {
|
|
.mul = &gcm_generic_mul,
|
|
.is_supported = &gcm_generic_will_work,
|
|
.name = "generic"
|
|
};
|