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Autonomous random driver: declare the type and function

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Define a sample type mbedtls_psa_external_random_context_t in
psa/crypto_platform.h and define the prototype of
mbedtls_psa_external_get_random() in a public header.

Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2020-11-13 18:00:34 +01:00
parent 514a8fdf40
commit b8af22858d
3 changed files with 40 additions and 3 deletions
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7
include/mbedtls/config.h
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@ -1342,9 +1342,10 @@
* Make the PSA Crypto module use an external random generator provided
* by a driver, instead of Mbed TLS's entropy and DRBG modules.
*
* If you enable this option, you must supply a type called
* \c mbedtls_psa_external_random_context_t and a function called
* mbedtls_psa_external_get_random() with the following prototype:
* If you enable this option, you must supply configure the type
* ::mbedtls_psa_external_random_context_t in psa/crypto_platform.h
* and define a function called mbedtls_psa_external_get_random()
* with the following prototype:
* ```
* psa_status_t mbedtls_psa_external_get_random(
* mbedtls_psa_external_random_context_t *context,