1 /*
2 * FreeRTOS V202212.00
3 * Copyright (C) 2020 Amazon.com, Inc. or its affiliates. All Rights Reserved.
4 *
5 * Permission is hereby granted, free of charge, to any person obtaining a copy of
6 * this software and associated documentation files (the "Software"), to deal in
7 * the Software without restriction, including without limitation the rights to
8 * use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
9 * the Software, and to permit persons to whom the Software is furnished to do so,
10 * subject to the following conditions:
11 *
12 * The above copyright notice and this permission notice shall be included in all
13 * copies or substantial portions of the Software.
14 *
15 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
16 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
17 * FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
18 * COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
19 * IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
20 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
21 *
22 * https://www.FreeRTOS.org
23 * https://github.com/FreeRTOS
24 *
25 */
26
27 #include "logging_levels.h"
28
29 #ifndef LIBRARY_LOG_NAME
30 #define LIBRARY_LOG_NAME "MbedTLSRNGP11"
31 #endif /* LIBRARY_LOG_NAME */
32
33 #ifndef LIBRARY_LOG_LEVEL
34 #define LIBRARY_LOG_LEVEL LOG_ERROR
35 #endif /* LIBRARY_LOG_LEVEL */
36
37 #include "logging_stack.h"
38
39 /**
40 * @file mbedtls_rng_pkcs11.c
41 * @brief Implements an mbedtls RNG callback using the PKCS#11 API
42 */
43
44 #include "core_pkcs11_config.h"
45 #include "core_pkcs11.h"
46
47 /*-----------------------------------------------------------*/
48
lMbedCryptoRngCallbackPKCS11(void * pvCtx,unsigned char * pucOutput,size_t uxLen)49 int lMbedCryptoRngCallbackPKCS11( void * pvCtx,
50 unsigned char * pucOutput,
51 size_t uxLen )
52 {
53 int lRslt;
54 CK_FUNCTION_LIST_PTR pxFunctionList = NULL;
55 CK_SESSION_HANDLE * pxSessionHandle = ( CK_SESSION_HANDLE * ) pvCtx;
56
57 if( pucOutput == NULL )
58 {
59 lRslt = -1;
60 }
61 else if( pvCtx == NULL )
62 {
63 lRslt = -1;
64 LogError( ( "pvCtx must not be NULL." ) );
65 }
66 else
67 {
68 lRslt = ( int ) C_GetFunctionList( &pxFunctionList );
69 }
70
71 if( ( lRslt != CKR_OK ) ||
72 ( pxFunctionList == NULL ) ||
73 ( pxFunctionList->C_GenerateRandom == NULL ) )
74 {
75 lRslt = -1;
76 }
77 else
78 {
79 lRslt = ( int ) pxFunctionList->C_GenerateRandom( *pxSessionHandle, pucOutput, uxLen );
80 }
81
82 return lRslt;
83 }
84
85 /*-----------------------------------------------------------*/
86