20bb84ffee
This is a cherry pick of recent changes to OEMCrypto and ODK. Most of these are part of the document migration to doxygen. See http://go/wvgerrit/106005 and its parents for code reviews. Bug: 144715340 Bug: 148232693 Bug: 167580674 Change-Id: I658f99c8117b974faed97322d61fac0f382283af
35 lines
905 B
C
35 lines
905 B
C
// Copyright 2019 Google LLC. All rights reserved. This file and proprietary
|
|
// source code may only be used and distributed under the Widevine Master
|
|
// License Agreement.
|
|
|
|
#include "odk_util.h"
|
|
|
|
int crypto_memcmp(const void* in_a, const void* in_b, size_t len) {
|
|
if (len == 0) {
|
|
return 0;
|
|
}
|
|
|
|
/* Only valid pointers are allowed. */
|
|
if (in_a == NULL || in_b == NULL) {
|
|
return -1;
|
|
}
|
|
|
|
const uint8_t* a = (const uint8_t*)in_a;
|
|
const uint8_t* b = (const uint8_t*)in_b;
|
|
uint8_t x = 0;
|
|
|
|
for (size_t i = 0; i < len; i++) {
|
|
x |= a[i] ^ b[i];
|
|
}
|
|
return x;
|
|
}
|
|
|
|
bool ODK_NonceValuesEqual(const ODK_NonceValues* a, const ODK_NonceValues* b) {
|
|
if (a == NULL || b == NULL) {
|
|
return (a == b);
|
|
}
|
|
return (a->api_major_version == b->api_major_version &&
|
|
a->api_minor_version == b->api_minor_version &&
|
|
a->nonce == b->nonce && a->session_id == b->session_id);
|
|
}
|