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Document mutex invariant for CTR_DRBG

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Signed-off-by: Gilles Peskine <Gilles.Peskine@arm.com>
This commit is contained in:
Gilles Peskine 2021-02-09 18:44:02 +01:00
parent 89816bc020
commit 2ecc0b89f3
2 changed files with 9 additions and 0 deletions
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2
library/ctr_drbg.c
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@ -95,6 +95,7 @@ void mbedtls_ctr_drbg_free( mbedtls_ctr_drbg_context *ctx )
return;
#if defined(MBEDTLS_THREADING_C)
/* The mutex is initialized iff f_entropy is set. */
if( ctx->f_entropy != NULL )
mbedtls_mutex_free( &ctx->mutex );
#endif
@ -416,6 +417,7 @@ int mbedtls_ctr_drbg_seed( mbedtls_ctr_drbg_context *ctx,
memset( key, 0, MBEDTLS_CTR_DRBG_KEYSIZE );
/* The mutex is initialized iff f_entropy is set. */
#if defined(MBEDTLS_THREADING_C)
mbedtls_mutex_init( &ctx->mutex );
#endif