642965c678
No-Typo-Check: Not related to this change. Bug: 161477208 Change-Id: I99e4780f6855b7045aa0cd5a49c13d2d0d51ed64
34 lines
840 B
C
34 lines
840 B
C
// Copyright 2019 Google LLC. All rights reserved. This file and proprietary
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// source code may only be used and distributed under the Widevine
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// License Agreement.
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#include "odk_util.h"
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int crypto_memcmp(const void* in_a, const void* in_b, size_t len) {
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if (len == 0) {
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return 0;
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}
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/* Only valid pointers are allowed. */
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if (in_a == NULL || in_b == NULL) {
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return -1;
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}
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const uint8_t* a = (const uint8_t*)in_a;
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const uint8_t* b = (const uint8_t*)in_b;
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uint8_t x = 0;
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for (size_t i = 0; i < len; i++) {
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x |= a[i] ^ b[i];
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}
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return x;
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}
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bool ODK_NonceValuesEqualExcludingVersion(const ODK_NonceValues* a,
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const ODK_NonceValues* b) {
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if (a == NULL || b == NULL) {
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return (a == b);
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}
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return (a->nonce == b->nonce && a->session_id == b->session_id);
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}
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