diff --git a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh
index d577ad974efaba..bb4aab2b0dcc3c 100755
--- a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh
+++ b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update.sh
@@ -14,19 +14,19 @@ cd ${BSIM_OUT_PATH}/bin
 if [ "${1}" != 'debug0' ]; then
   Execute "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm
+    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" != 'debug1' ]; then
   Execute "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm
+    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" != 'debug2' ]; then
   Execute "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm
+    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
 fi
 
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
@@ -35,19 +35,19 @@ Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
 if [ "${1}" == 'debug0' ]; then
   gdb --args "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm
+    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" == 'debug1' ]; then
   gdb --args "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm
+    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" == 'debug2' ]; then
   gdb --args "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm
+    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
 fi
 
 wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_2.sh b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_2.sh
index 49a27c4524e502..eb165fa85f05e2 100755
--- a/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_2.sh
+++ b/tests/bsim/bluetooth/host/security/ccc_update/test_scripts/ccc_update_2.sh
@@ -14,19 +14,19 @@ cd ${BSIM_OUT_PATH}/bin
 if [ "${1}" != 'debug0' ]; then
   Execute "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm
+    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" != 'debug1' ]; then
   Execute "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm
+    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" != 'debug2' ]; then
   Execute "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm
+    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
 fi
 
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
@@ -35,19 +35,19 @@ Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
 if [ "${1}" == 'debug0' ]; then
   gdb --args "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central \
-    -flash="${simulation_id}_client.log.bin" -flash_rm
+    -flash="${simulation_id}_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" == 'debug1' ]; then
   gdb --args "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=bad_central \
-    -flash="${simulation_id}_bad_client.log.bin" -flash_rm
+    -flash="${simulation_id}_bad_client.log.bin" -flash_rm -RealEncryption=1
 fi
 
 if [ "${1}" == 'debug2' ]; then
   gdb --args "./${test_exe}" \
     -v=${verbosity_level} -s=${simulation_id} -d=2 -testid=peripheral \
-    -flash="${simulation_id}_server.log.bin" -flash_rm
+    -flash="${simulation_id}_server.log.bin" -flash_rm -RealEncryption=1
 fi
 
 wait_for_background_jobs
diff --git a/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh b/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh
index 5abb7bef44420d..287eeeee152dde 100755
--- a/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh
+++ b/tests/bsim/bluetooth/host/security/security_changed_callback/test_scripts/security_changed_callback.sh
@@ -12,10 +12,11 @@ verbosity_level=2
 cd ${BSIM_OUT_PATH}/bin
 
 Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central
+  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central -RealEncryption=1
 
 Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_disconnect_in_sec_cb
+  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_disconnect_in_sec_cb \
+  -RealEncryption=1
 
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6
@@ -23,10 +24,11 @@ Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
 wait_for_background_jobs
 
 Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central
+  -v=${verbosity_level} -s=${simulation_id} -d=0 -testid=central  -RealEncryption=1
 
 Execute "./${test_exe}" \
-  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_unpair_in_sec_cb
+  -v=${verbosity_level} -s=${simulation_id} -d=1 -testid=peripheral_unpair_in_sec_cb \
+  -RealEncryption=1
 
 Execute ./bs_2G4_phy_v1 -v=${verbosity_level} -s=${simulation_id} \
   -D=2 -sim_length=60e6