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-rw-r--r--ChangeLog.d/9126.txt5
-rw-r--r--include/mbedtls/config_psa.h4
2 files changed, 9 insertions, 0 deletions
diff --git a/ChangeLog.d/9126.txt b/ChangeLog.d/9126.txt
new file mode 100644
index 0000000..22939df
--- /dev/null
+++ b/ChangeLog.d/9126.txt
@@ -0,0 +1,5 @@
+Default behavior changes
+ * In a PSA-client-only build (i.e. MBEDTLS_PSA_CRYPTO_CLIENT &&
+ !MBEDTLS_PSA_CRYPTO_C), do not automatically enable local crypto when the
+ corresponding PSA mechanism is enabled, since the server provides the
+ crypto. Fixes #9126.
diff --git a/include/mbedtls/config_psa.h b/include/mbedtls/config_psa.h
index de961ec..5f3d0f3 100644
--- a/include/mbedtls/config_psa.h
+++ b/include/mbedtls/config_psa.h
@@ -34,7 +34,11 @@
* before we deduce what built-ins are required. */
#include "psa/crypto_adjust_config_key_pair_types.h"
+#if defined(MBEDTLS_PSA_CRYPTO_C)
+/* If we are implementing PSA crypto ourselves, then we want to enable the
+ * required built-ins. Otherwise, PSA features will be provided by the server. */
#include "mbedtls/config_adjust_legacy_from_psa.h"
+#endif
#else /* MBEDTLS_PSA_CRYPTO_CONFIG */