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Summary Syntax Arguments References Call Tree Data Use

SourceVuESP-IDF Framework and ExamplesmbedTLSmbedtls_psa_get_random()

mbedtls_psa_get_random() function

The random generator function for the PSA subsystem. This function is suitable as the `f_rng` random generator function parameter of many `mbedtls_xxx` functions. The implementation of this function depends on the configuration of the library.

Syntax

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Summary

Declaration

Definition

from psa_util.h:57

int mbedtls_psa_get_random(void *p_rng, unsigned char *output, size_t output_size);

Implemented in psa_util.c:348

Arguments

Argument

Description

p_rng

This parameter is only kept for backward compatibility reasons with legacy `f_rng` functions and it's ignored. Set to #MBEDTLS_PSA_RANDOM_STATE or NULL.

output

The buffer to fill. It must have room for \c output_size bytes.

output_size

The number of bytes to write to \p output. This function may fail if \p output_size is too large. It is guaranteed to accept any output size requested by Mbed TLS library functions. The maximum request size depends on the library configuration.

Return value

\c 0 on success. An `MBEDTLS_ERR_ENTROPY_xxx`, `MBEDTLS_ERR_PLATFORM_xxx, `MBEDTLS_ERR_CTR_DRBG_xxx` or `MBEDTLS_ERR_HMAC_DRBG_xxx` on error.

Notes

This function may only be used if the PSA crypto subsystem is active. This means that you must call psa_crypto_init() before any call to this function, and you must not call this function after calling mbedtls_psa_crypto_free().

References

Code

Location

Referrer

int mbedtls_psa_get_random(void *p_rng,

int mbedtls_psa_get_random(void *p_rng,

mbedtls_psa_get_random,

copy_from_psa()

mbedtls_psa_get_random,

psa_crypto_ecp.c:265

mbedtls_psa_ecp_export_key()

mbedtls_psa_get_random,

psa_crypto_ecp.c:342

mbedtls_psa_ecp_generate_key()

mbedtls_psa_get_random,

psa_crypto_ecp.c:403

mbedtls_psa_ecdsa_sign_hash()

mbedtls_psa_get_random,

psa_crypto_ecp.c:413

mbedtls_psa_ecdsa_sign_hash()

mbedtls_psa_get_random,

psa_crypto_ecp.c:444

mbedtls_psa_ecp_load_public_part()

mbedtls_psa_get_random,

psa_crypto_ecp.c:574

mbedtls_psa_key_agreement_ecdh()

MBEDTLS_MPI_CHK(mbedtls_mpi_random(&X, 3, &P, mbedtls_psa_get_random,

psa_crypto_ffdh.c:220

mbedtls_psa_ffdh_generate_key()

mbedtls_psa_get_random,

psa_crypto_pake.c:315

mbedtls_psa_pake_output_internal()

mbedtls_psa_get_random,

psa_crypto_pake.c:327

mbedtls_psa_pake_output_internal()

mbedtls_psa_get_random,

psa_crypto_pake.c:534

mbedtls_psa_pake_get_implicit_key()

mbedtls_psa_get_random,

psa_crypto_rsa.c:260

mbedtls_psa_rsa_generate_key()

mbedtls_psa_get_random,

psa_crypto_rsa.c:351

mbedtls_psa_rsa_sign_hash()

mbedtls_psa_get_random,

psa_crypto_rsa.c:366

mbedtls_psa_rsa_sign_hash()

mbedtls_psa_get_random,

psa_crypto_rsa.c:560

mbedtls_psa_asymmetric_encrypt()

mbedtls_psa_get_random,

psa_crypto_rsa.c:579

mbedtls_psa_asymmetric_encrypt()

mbedtls_psa_get_random,

psa_crypto_rsa.c:657

mbedtls_psa_asymmetric_decrypt()

mbedtls_psa_get_random,

psa_crypto_rsa.c:677

mbedtls_psa_asymmetric_decrypt()

Call Tree

mbedtls_psa_get_random() calls 1 function:

mbedtls_psa_get_random()

psa_generate_random()

Data Use

mbedtls_psa_get_random() writes 13 variables:

mbedtls_psa_get_random()

copy_from_psa()

mbedtls_psa_ecp_export_key()

mbedtls_psa_ecp_generate_key()

mbedtls_psa_ecdsa_sign_hash()

mbedtls_psa_ecp_load_public_part()

mbedtls_psa_key_agreement_ecdh()

mbedtls_psa_ffdh_generate_key()

mbedtls_psa_pake_output_internal()

mbedtls_psa_pake_get_implicit_key()

mbedtls_psa_rsa_generate_key()

mbedtls_psa_rsa_sign_hash()

mbedtls_psa_asymmetric_encrypt()

mbedtls_psa_asymmetric_decrypt()

Class Tree

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Implementations

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Instances

Lifecycle

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