Initialize RSA context in RSA test suite before first potentially failing operation
The function `mbedtls_rsa_gen_key` from `test_suite_rsa.function` initialized a stack allocated RSA context only after
seeding the CTR DRBG. If the latter operation failed, the cleanup code tried to free the uninitialized RSA context,
potentially resulting in a segmentation fault. Fixes one aspect of #1023.
diff --git a/tests/suites/test_suite_rsa.function b/tests/suites/test_suite_rsa.function
index d48bc85..e9ae1bf 100644
--- a/tests/suites/test_suite_rsa.function
+++ b/tests/suites/test_suite_rsa.function
@@ -667,13 +667,12 @@
const char *pers = "test_suite_rsa";
mbedtls_ctr_drbg_init( &ctr_drbg );
-
mbedtls_entropy_init( &entropy );
+ mbedtls_rsa_init ( &ctx, 0, 0 );
+
TEST_ASSERT( mbedtls_ctr_drbg_seed( &ctr_drbg, mbedtls_entropy_func, &entropy,
(const unsigned char *) pers, strlen( pers ) ) == 0 );
- mbedtls_rsa_init( &ctx, 0, 0 );
-
TEST_ASSERT( mbedtls_rsa_gen_key( &ctx, mbedtls_ctr_drbg_random, &ctr_drbg, nrbits, exponent ) == result );
if( result == 0 )
{