1 /**
2 * Copyright (c) 2020 HiSilicon (Shanghai) Technologies CO., LIMITED.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 * Description: mbedtls harden adapt internal source file.
15 *
16 * Create: 2023-05-10
17 */
18
19 #include "common.h"
20
21 #if defined(MBEDTLS_ENTROPY_C) && defined(MBEDTLS_ENTROPY_HARDWARE_ALT)
22 #include "mbedtls/error.h"
23 #include "mbedtls/entropy.h"
24 #include "entropy_poll.h"
25 #include "cipher_adapt.h"
26 #include "dfx.h"
27
mbedtls_hardware_poll(void * data,unsigned char * output,size_t len,size_t * olen)28 int mbedtls_hardware_poll( void *data, unsigned char *output, size_t len, size_t *olen )
29 {
30 int ret;
31
32 mbedtls_harden_log_func_enter();
33
34 if( IS_TRNG_FUNC_REGISTERED() != TD_TRUE )
35 #if !defined(MBEDTLS_NO_PLATFORM_ENTROPY)
36 return mbedtls_platform_entropy_poll( data, output, len, olen );
37 #else
38 return ( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
39 #endif
40
41 if( len == 0 || olen == NULL || output == NULL )
42 return( MBEDTLS_ERR_ENTROPY_SOURCE_FAILED );
43
44 (void) data;
45
46 ret = CIPHER_TRNG_GET_MULTI_RANDOM( len, output );
47 if( ret != MBEDTLS_HARDEN_SUCCESS )
48 {
49 mbedtls_harden_log_err("CIPHER_TRNG_GET_MULTI_RANDOM failed, ret = 0x%x!\n", ret );
50 return( MBEDTLS_ERR_PLATFORM_HW_ACCEL_FAILED );
51 }
52 *olen = len;
53
54 mbedtls_harden_log_func_exit();
55
56 return( 0 );
57 }
58
59 #endif /* MBEDTLS_ENTROPY_C && MBEDTLS_ENTROPY_HARDWARE_ALT */