If mbedtls NIST AES KW is not enabled defined it as null algorithm

mbedtls NIST AES KW is not enabled as default, so if it is not defined
in build, implemented it temporally as null encryption algrorithm.

!!! This is to be removed after configurations are updated

Author: Mika Leppänen

source/Service_Libs/nist_aes_kw/nist_aes_kw.c

@@ -23,6 +23,8 @@
 #include "mbedtls/nist_kw.h"
 #include "Service_Libs/nist_aes_kw/nist_aes_kw.h"
 
+#ifdef HAVE_WS
+
 #define TRACE_GROUP "naes"
 
 int8_t nist_aes_key_wrap(uint8_t is_wrap, const uint8_t *key, int16_t key_bits, const uint8_t *input, size_t input_len, uint8_t *output, size_t *output_len)
@@ -93,5 +95,62 @@ int8_t nist_aes_key_wrap(uint8_t is_wrap, const uint8_t *key, int16_t key_bits,
 
 error:
     mbedtls_nist_kw_free(&ctx);
+
     return ret_val;
 }
+
+#if !defined(MBEDTLS_NIST_KW_C)
+
+// Temporal implementation until MBEDTLS_NIST_KW_C is enabled on all platforms
+
+void mbedtls_nist_kw_init(mbedtls_nist_kw_context *ctx)
+{
+    (void) ctx;
+}
+
+int mbedtls_nist_kw_setkey( mbedtls_nist_kw_context *ctx,
+                            mbedtls_cipher_id_t cipher,
+                            const unsigned char *key,
+                            unsigned int keybits,
+                            const int is_wrap)
+{
+    (void) ctx;
+    (void) cipher;
+    (void) key;
+    (void) keybits;
+    (void) is_wrap;
+    return 0;
+}
+
+int mbedtls_nist_kw_wrap( mbedtls_nist_kw_context *ctx, mbedtls_nist_kw_mode_t mode,
+                          const unsigned char *input, size_t in_len,
+                          unsigned char *output, size_t* out_len, size_t out_size)
+{
+    (void) ctx;
+    (void) mode;
+    memset(output, 0, out_size);
+    memcpy(output, input, in_len);
+    *out_len = in_len + 8;
+    return 0;
+}
+
+int mbedtls_nist_kw_unwrap( mbedtls_nist_kw_context *ctx, mbedtls_nist_kw_mode_t mode,
+                            const unsigned char *input, size_t in_len,
+                            unsigned char *output, size_t* out_len, size_t out_size)
+{
+    (void) ctx;
+    (void) mode;
+    *out_len = in_len - 8;
+    memset(output, 0, out_size);
+    memcpy(output, input, *out_len);
+    return 0;
+}
+
+void mbedtls_nist_kw_free( mbedtls_nist_kw_context *ctx )
+{
+    (void) ctx;
+}
+
+#endif
+
+#endif