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-rw-r--r--mme/key_derivation.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/mme/key_derivation.h b/mme/key_derivation.h
index 496f52bc..ae15b658 100644
--- a/mme/key_derivation.h
+++ b/mme/key_derivation.h
@@ -19,3 +19,5 @@ void mme_kdf_nas(uint8_t algorithm_type_distinguishers,
void mme_kdf_enb(const uint8_t *kasme, uint32_t ul_count, uint8_t *kenb);
void mme_kdf_nh(const uint8_t *kasme, const uint8_t *sync_input, uint8_t *kenb);
+
+void mme_kdf_nas_token(const uint8_t *kasme, uint32_t ul_count, uint8_t *nas_token);