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Merge pull request #138 from Patater/add-entropy-injection-source

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psa: Add NV seed as an entropy source when needed
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Jaeden Amero 2019-06-05 16:35:46 +01:00 committed by GitHub
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1 changed files with 9 additions and 0 deletions
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9
library/psa_crypto.c
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@ -4639,6 +4639,15 @@ psa_status_t psa_crypto_init( void )
/* Initialize the random generator. */ /* Initialize the random generator. */
global_data.entropy_init( &global_data.entropy ); global_data.entropy_init( &global_data.entropy );
#if defined(MBEDTLS_PSA_INJECT_ENTROPY) && \
defined(MBEDTLS_NO_DEFAULT_ENTROPY_SOURCES)
/* The PSA entropy injection feature depends on using NV seed as an entropy
* source. Add NV seed as an entropy source for PSA entropy injection. */
mbedtls_entropy_add_source( &global_data.entropy,
mbedtls_nv_seed_poll, NULL,
MBEDTLS_ENTROPY_BLOCK_SIZE,
MBEDTLS_ENTROPY_SOURCE_STRONG );
#endif
mbedtls_ctr_drbg_init( &global_data.ctr_drbg ); mbedtls_ctr_drbg_init( &global_data.ctr_drbg );
global_data.rng_state = RNG_INITIALIZED; global_data.rng_state = RNG_INITIALIZED;
status = mbedtls_to_psa_error( status = mbedtls_to_psa_error(