MCUX CLNS
MCUX Crypto Library Normal Secure
 
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mcuxClExample_RNG_Helper.h
1/*--------------------------------------------------------------------------*/
2/* Copyright 2022-2023 NXP */
3/* */
4/* NXP Confidential. This software is owned or controlled by NXP and may */
5/* only be used strictly in accordance with the applicable license terms. */
6/* By expressly accepting such terms or by downloading, installing, */
7/* activating and/or otherwise using the software, you are agreeing that */
8/* you have read, and that you agree to comply with and are bound by, such */
9/* license terms. If you do not agree to be bound by the applicable license */
10/* terms, then you may not retain, install, activate or otherwise use the */
11/* software. */
12/*--------------------------------------------------------------------------*/
13
14#ifndef MCUXCLEXAMPLE_RNG_HELPER_H_
15#define MCUXCLEXAMPLE_RNG_HELPER_H_
16
17#include <mcuxClConfig.h> // Exported features flags header
18#include <mcuxClCore_Platform.h>
19#include <mcuxClRandom.h>
20#include <mcuxClRandomModes.h>
23
24// always allocate a minimum size buffer to avoid issues
25// The size is given in bytes and allocated in words
26#define MCUXCLEXAMPLE_ALLOCATE_RNG_CTXT(rngCtxLength) ((rngCtxLength > 0u)?(((rngCtxLength) + sizeof(uint32_t) - 1u) / sizeof(uint32_t)) : 1u)
27
28
36#define MCUXCLEXAMPLE_ALLOCATE_AND_INITIALIZE_RNG(pSession, rngCtxLength, mode) \
37 uint32_t context[MCUXCLEXAMPLE_ALLOCATE_RNG_CTXT(rngCtxLength)] = {0}; \
38 mcuxClRandom_Context_t pRng_ctx = (mcuxClRandom_Context_t)context; \
39 \
40 /* Initialize the RNG context */ \
41 MCUX_CSSL_FP_FUNCTION_CALL_BEGIN(randomInit_result, randomInit_token, mcuxClRandom_init(pSession, \
42 pRng_ctx, \
43 mode)); \
44 if((MCUX_CSSL_FP_FUNCTION_CALLED(mcuxClRandom_init) != randomInit_token) || (MCUXCLRANDOM_STATUS_OK != randomInit_result)) \
45 { \
46 return MCUXCLEXAMPLE_STATUS_ERROR; \
47 } \
48 MCUX_CSSL_FP_FUNCTION_CALL_END(); \
49 /* Initialize the PRNG */ \
50 MCUX_CSSL_FP_FUNCTION_CALL_BEGIN(prngInit_result, prngInit_token, mcuxClRandom_ncInit(pSession)); \
51 if((MCUX_CSSL_FP_FUNCTION_CALLED(mcuxClRandom_ncInit) != prngInit_token) || (MCUXCLRANDOM_STATUS_OK != prngInit_result)) \
52 { \
53 return MCUXCLEXAMPLE_STATUS_ERROR; \
54 } \
55 MCUX_CSSL_FP_FUNCTION_CALL_END();
56
57#define MCUXCLEXAMPLE_INITIALIZE_PRNG(session) \
58 /* Initialize the PRNG */ \
59 MCUX_CSSL_FP_FUNCTION_CALL_BEGIN(prngInit_result, prngInit_token, mcuxClRandom_ncInit(session)); \
60 if((MCUX_CSSL_FP_FUNCTION_CALLED(mcuxClRandom_ncInit) != prngInit_token) || (MCUXCLRANDOM_STATUS_OK != prngInit_result)) \
61 { \
62 return MCUXCLEXAMPLE_STATUS_ERROR; \
63 } \
64 MCUX_CSSL_FP_FUNCTION_CALL_END();
65
66#endif /* MCUXCLEXAMPLE_RNG_HELPER_H_ */
Definition of function identifiers for the flow protection mechanism.
Top level header of mcuxClRandom component.
Top level header of mcuxClRandomModes component.
Provides the API for the CSSL flow protection mechanism.