Add `psa_enabled` field to cipher ctx and add dummy implementations
This field determines whether a cipher context should
use an external implementation of the PSA Crypto API for
cryptographic operations, or Mbed TLS' own crypto library.
The commit also adds dummy implementations for the cipher API.
diff --git a/include/mbedtls/cipher.h b/include/mbedtls/cipher.h
index e7e222c..c2745e8 100644
--- a/include/mbedtls/cipher.h
+++ b/include/mbedtls/cipher.h
@@ -321,6 +321,18 @@
/** CMAC-specific context. */
mbedtls_cmac_context_t *cmac_ctx;
#endif
+
+#if defined(MBEDTLS_USE_PSA_CRYPTO)
+ /** Indicates whether the cipher operations should be performed
+ * by Mbed TLS' own crypto library or an external implementation
+ * of the PSA Crypto API.
+ * This is unset if the cipher context is setup through
+ * mbedtls_cipher_setup(), and set if it is setup through
+ * mbedtls_cipher_setup_psa().
+ */
+ unsigned char psa_enabled;
+#endif /* MBEDTLS_USE_PSA_CRYPTO */
+
} mbedtls_cipher_context_t;
/**