diff --git a/CMakeLists.txt b/CMakeLists.txt
index 49b0567..9e8d413 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -51,7 +51,7 @@ target_sources(pico_hsm PUBLIC
         ${CMAKE_CURRENT_LIST_DIR}/src/fs/low_flash.c
         ${CMAKE_CURRENT_LIST_DIR}/src/rng/random.c
         ${CMAKE_CURRENT_LIST_DIR}/src/rng/neug.c
-        ${CMAKE_CURRENT_LIST_DIR}/src/hsm/hash_utils.c
+        ${CMAKE_CURRENT_LIST_DIR}/src/hsm/crypto_utils.c
         ${CMAKE_CURRENT_LIST_DIR}/src/hsm/dkek.c
         
         ${CMAKE_CURRENT_LIST_DIR}/mbedtls/library/sha256.c
diff --git a/src/hsm/hash_utils.c b/src/hsm/crypto_utils.c
similarity index 99%
rename from src/hsm/hash_utils.c
rename to src/hsm/crypto_utils.c
index 9a665df..4df1811 100644
--- a/src/hsm/hash_utils.c
+++ b/src/hsm/crypto_utils.c
@@ -19,7 +19,7 @@
 #include "mbedtls/md.h"
 #include "mbedtls/sha256.h"
 #include "mbedtls/aes.h"
-#include "hash_utils.h"
+#include "crypto_utils.h"
 #include "sc_hsm.h"
 #include "libopensc/card-sc-hsm.h"
 
diff --git a/src/hsm/hash_utils.h b/src/hsm/crypto_utils.h
similarity index 97%
rename from src/hsm/hash_utils.h
rename to src/hsm/crypto_utils.h
index c411812..3b686c1 100644
--- a/src/hsm/hash_utils.h
+++ b/src/hsm/crypto_utils.h
@@ -15,8 +15,8 @@
  * along with this program. If not, see <http://www.gnu.org/licenses/>.
  */
 
-#ifndef _HASH_UTILS_H_
-#define _HASH_UTILS_H_
+#ifndef _CRYPTO_UTILS_H_
+#define _CRYPTO_UTILS_H_
 
 #include "stdlib.h"
 #include "pico/stdlib.h"
diff --git a/src/hsm/dkek.c b/src/hsm/dkek.c
index 0cd5f06..153aa60 100644
--- a/src/hsm/dkek.c
+++ b/src/hsm/dkek.c
@@ -20,7 +20,7 @@
 #include "stdlib.h"
 #include "pico/stdlib.h"
 #include "dkek.h"
-#include "hash_utils.h"
+#include "crypto_utils.h"
 #include "random.h"
 #include "sc_hsm.h"
 #include "mbedtls/md.h"
diff --git a/src/hsm/sc_hsm.c b/src/hsm/sc_hsm.c
index c0a12f9..7f9b416 100644
--- a/src/hsm/sc_hsm.c
+++ b/src/hsm/sc_hsm.c
@@ -30,7 +30,7 @@
 #include "mbedtls/hkdf.h"
 #include "version.h"
 #include "cvcerts.h"
-#include "hash_utils.h"
+#include "crypto_utils.h"
 #include "dkek.h"
 
 const uint8_t sc_hsm_aid[] = {