41 lines
1.4 KiB
Go
41 lines
1.4 KiB
Go
|
// The MIT License (MIT)
|
||
|
|
//
|
||
|
|
// Copyright (C) 2016-2017 Vivint, Inc.
|
||
|
|
//
|
||
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||
|
|
// of this software and associated documentation files (the "Software"), to deal
|
||
|
|
// in the Software without restriction, including without limitation the rights
|
||
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||
|
|
// copies of the Software, and to permit persons to whom the Software is
|
||
|
|
// furnished to do so, subject to the following conditions:
|
||
|
|
//
|
||
|
|
// The above copyright notice and this permission notice shall be included in all
|
||
|
|
// copies or substantial portions of the Software.
|
||
|
|
//
|
||
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
||
|
|
// SOFTWARE.
|
||
|
|
|
||
|
|
// +build !amd64
|
||
|
|
|
||
|
|
package infectious
|
||
|
|
|
||
|
|
func addmul(z []byte, x []byte, y byte) {
|
||
|
|
if y == 0 {
|
||
|
|
return
|
||
|
|
}
|
||
|
|
|
||
|
|
// hint to the compiler that we don't need bounds checks on x
|
||
|
|
x = x[:len(z)]
|
||
|
|
|
||
|
|
// TODO(jeff): loop unrolling for SPEEDS
|
||
|
|
gf_mul_y := gf_mul_table[y][:]
|
||
|
|
for i := range z {
|
||
|
|
z[i] ^= gf_mul_y[x[i]]
|
||
|
|
}
|
||
|
|
}
|