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Add global mutex for asymmetric crypto accelerator

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The primary use case behind providing an abstraction layer to enable
alternative Elliptic Curve Point arithmetic implementation, is making
use of cryptographic acceleration hardware if it is present.

To provide thread safety for the hardware accelerator we need a mutex
to guard it.
This commit is contained in:
Janos Follath 2016-11-01 16:39:47 +00:00 committed by Simon Butcher
parent 16e63ea2e2
commit 552f6b6d17
2 changed files with 12 additions and 0 deletions
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3
include/mbedtls/threading.h
View File

@ -97,6 +97,9 @@ extern int (*mbedtls_mutex_unlock)( mbedtls_threading_mutex_t *mutex );
*/
extern mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex;
extern mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex;
#if defined(MBEDTLS_ECP_FUNCTION_ALT)
extern mbedtls_threading_mutex_t mbedtls_threading_cryptohw_asym_mutex;
#endif
#endif /* MBEDTLS_THREADING_C */
#ifdef __cplusplus

9
library/threading.c
View File

@ -113,6 +113,9 @@ void mbedtls_threading_set_alt( void (*mutex_init)( mbedtls_threading_mutex_t *
mbedtls_mutex_init( &mbedtls_threading_readdir_mutex );
mbedtls_mutex_init( &mbedtls_threading_gmtime_mutex );
#if defined(MBEDTLS_ECP_FUNCTION_ALT)
mbedtls_mutex_init( &mbedtls_threading_cryptohw_asym_mutex );
#endif
}
/*
@ -122,6 +125,9 @@ void mbedtls_threading_free_alt( void )
{
mbedtls_mutex_free( &mbedtls_threading_readdir_mutex );
mbedtls_mutex_free( &mbedtls_threading_gmtime_mutex );
#if defined(MBEDTLS_ECP_FUNCTION_ALT)
mbedtls_mutex_free( &mbedtls_threading_cryptohw_asym_mutex );
#endif
}
#endif /* MBEDTLS_THREADING_ALT */
@ -133,5 +139,8 @@ void mbedtls_threading_free_alt( void )
#endif
mbedtls_threading_mutex_t mbedtls_threading_readdir_mutex MUTEX_INIT;
mbedtls_threading_mutex_t mbedtls_threading_gmtime_mutex MUTEX_INIT;
#if defined(MBEDTLS_ECP_FUNCTION_ALT)
mbedtls_threading_mutex_t mbedtls_threading_cryptohw_asym_mutex MUTEX_INIT;
#endif
#endif /* MBEDTLS_THREADING_C */