psa_generate_random() function

Generate random bytes. \warning This function **can** fail! Callers MUST check the return status and MUST NOT use the content of the output buffer if the return status is not #PSA_SUCCESS.

Syntax

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Summary

Declaration

Definition

from crypto.h:4163

psa_status_t psa_generate_random(uint8_t *output, size_t output_size);

Implemented in psa_crypto.c:7811

Arguments

Argument

Description

output

Output buffer for the generated data.

output_size

Number of bytes to generate and output.

Return value

#PSA_SUCCESS \emptydescription #PSA_ERROR_NOT_SUPPORTED \emptydescription #PSA_ERROR_INSUFFICIENT_ENTROPY \emptydescription #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription #PSA_ERROR_COMMUNICATION_FAILURE \emptydescription #PSA_ERROR_HARDWARE_FAILURE \emptydescription #PSA_ERROR_CORRUPTION_DETECTED \emptydescription #PSA_ERROR_BAD_STATE The library has not been previously initialized by psa_crypto_init(). It is implementation-dependent whether a failure to initialize results in this error code.