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Support NV seed enabled at compile time but not at runtime

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When testing with custom entropy sources, if MBEDTLS_ENTROPY_NV_SEED
is enabled at compile time but the NV seed source is not used at
runtime, mbedtls_entropy_func makes a second pass anyway. Cope with
this in the test code by telling the entropy module not to make this
second pass.
This commit is contained in:
Gilles Peskine 2018-11-20 23:09:54 +01:00
parent ebe770c693
commit 0b3b5733fc
1 changed files with 8 additions and 1 deletions
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7
tests/suites/test_suite_psa_crypto_init.function
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@ -95,10 +95,17 @@ static void custom_entropy_init( mbedtls_entropy_context *ctx )
#endif
#if defined(MBEDTLS_ENTROPY_NV_SEED)
if( custom_entropy_sources_mask & ENTROPY_SOURCE_NV_SEED )
{
mbedtls_entropy_add_source( ctx, mbedtls_nv_seed_poll, NULL,
MBEDTLS_ENTROPY_BLOCK_SIZE,
MBEDTLS_ENTROPY_SOURCE_STRONG );
ctx->initial_entropy_run = 0;
}
else
{
/* Skip the NV seed even though it's compiled in. */
ctx->initial_entropy_run = 1;
}
#endif
if( custom_entropy_sources_mask & ENTROPY_SOURCE_FAKE )