Create function-level MBETLS_DES_xxx_ALT
diff --git a/include/mbedtls/des.h b/include/mbedtls/des.h
index 55ca455..af89979 100644
--- a/include/mbedtls/des.h
+++ b/include/mbedtls/des.h
@@ -271,6 +271,16 @@
unsigned char *output );
#endif /* MBEDTLS_CIPHER_MODE_CBC */
+/**
+ * \brief Internal function for key expansion.
+ * (Only exposed to allow overriding it,
+ * see MBEDTLS_DES_SETKEY_ALT)
+ *
+ * \param SK Round keys
+ * \param key Base key
+ */
+void mbedtls_des_setkey( uint32_t SK[32],
+ const unsigned char key[MBEDTLS_DES_KEY_SIZE] );
#ifdef __cplusplus
}
#endif