blob: 674e988b2506c5d89db4801c562a56bbdc13ec51 [file] [log] [blame]
/*
* Copyright (c) 2018 Google LLC.
*
* SPDX-License-Identifier: Apache-2.0
*/
#include <sys/crc.h>
uint8_t crc7_be(uint8_t seed, const uint8_t *src, size_t len)
{
while (len--) {
uint8_t e = seed ^ *src++;
uint8_t f = e ^ (e >> 4) ^ (e >> 7);
seed = (f << 1) ^ (f << 4);
}
return seed;
}