1 /*
2 * Copyright 2014 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include <keymaster/google_keymaster_utils.h>
18
19 namespace keymaster {
20
dup_buffer(const void * buf,size_t size)21 uint8_t* dup_buffer(const void* buf, size_t size) {
22 uint8_t* retval = new uint8_t[size];
23 if (retval != NULL)
24 memcpy(retval, buf, size);
25 return retval;
26 }
27
memcmp_s(const void * p1,const void * p2,size_t length)28 int memcmp_s(const void* p1, const void* p2, size_t length) {
29 const uint8_t* s1 = static_cast<const uint8_t*>(p1);
30 const uint8_t* s2 = static_cast<const uint8_t*>(p2);
31 uint8_t result = 0;
32 while (length-- > 0)
33 result |= *s1++ ^ *s2++;
34 return result == 0 ? 0 : 1;
35 }
36
37 } // namespace keymaster
38