diff --git a/tests/ssl-opt.sh b/tests/ssl-opt.sh
index 8b2a56d..74b673b 100755
--- a/tests/ssl-opt.sh
+++ b/tests/ssl-opt.sh
@@ -14479,6 +14479,7 @@
 # so we use split_send_frag instead for tests lower than 512 below.
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (256)" \
             "$O_NEXT_SRV -split_send_frag 256 " \
             "$P_CLI debug_level=4 " \
@@ -14487,6 +14488,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (128)" \
             "$O_NEXT_SRV -split_send_frag 128 " \
             "$P_CLI debug_level=4 " \
@@ -14495,6 +14497,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (64)" \
             "$O_NEXT_SRV -split_send_frag 64 " \
             "$P_CLI debug_level=4 " \
@@ -14503,6 +14506,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (36)" \
             "$O_NEXT_SRV -split_send_frag 36 " \
             "$P_CLI debug_level=4 " \
@@ -14511,6 +14515,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (32)" \
             "$O_NEXT_SRV -split_send_frag 32 " \
             "$P_CLI debug_level=4 " \
@@ -14519,6 +14524,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (16)" \
             "$O_NEXT_SRV -split_send_frag 16 " \
             "$P_CLI debug_level=4 " \
@@ -14527,6 +14533,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (13)" \
             "$O_NEXT_SRV -split_send_frag 13 " \
             "$P_CLI debug_level=4 " \
@@ -14535,6 +14542,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Client Handshake defragmentation (5)" \
             "$O_NEXT_SRV -split_send_frag 5 " \
             "$P_CLI debug_level=4 " \
@@ -14543,6 +14551,7 @@
             -c "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (512)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -max_send_frag 512 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14551,6 +14560,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (513)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -max_send_frag 513 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14559,6 +14569,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (256)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 256 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14567,6 +14578,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (128)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 128 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14575,6 +14587,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (64)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 64 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14583,6 +14596,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (36)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 36 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14591,6 +14605,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (32)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 32 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14599,6 +14614,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (16)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 16 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14607,6 +14623,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (13)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 13 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \
@@ -14615,6 +14632,7 @@
             -s "handshake fragment: "
 
 requires_openssl_tls1_3
+requires_certificate_authentication
 run_test    "Server Handshake defragmentation (5)" \
             "$P_SRV debug_level=4 auth_mode=required" \
             "$O_NEXT_CLI -split_send_frag 5 -cert $DATA_FILES_PATH/server5.crt -key $DATA_FILES_PATH/server5.key" \