Function esp_idf_sys::psa_generate_random

source ·

pub unsafe extern "C" fn psa_generate_random(
    output: *mut u8,
    output_size: usize
) -> psa_status_t

Expand description

\brief 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.

\note To generate a key, use psa_generate_key() instead.

\param[out] output Output buffer for the generated data. \param output_size Number of bytes to generate and output.

\retval #PSA_SUCCESS \emptydescription \retval #PSA_ERROR_NOT_SUPPORTED \emptydescription \retval #PSA_ERROR_INSUFFICIENT_ENTROPY \emptydescription \retval #PSA_ERROR_INSUFFICIENT_MEMORY \emptydescription \retval #PSA_ERROR_COMMUNICATION_FAILURE \emptydescription \retval #PSA_ERROR_HARDWARE_FAILURE \emptydescription \retval #PSA_ERROR_CORRUPTION_DETECTED \emptydescription \retval #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.