diff --git a/e2e/rust/e2e-podman.sh b/e2e/rust/e2e-podman.sh
index c82891338..b352a8e18 100755
--- a/e2e/rust/e2e-podman.sh
+++ b/e2e/rust/e2e-podman.sh
@@ -4,7 +4,7 @@
 
 # Run the Rust e2e suite against a standalone gateway running the bundled Podman
 # compute driver. Set OPENSHELL_GATEWAY_ENDPOINT=http://host:port to reuse an
-# existing plaintext gateway instead of starting an ephemeral one.
+# existing gateway instead of starting an ephemeral one.
 
 set -euo pipefail
 
diff --git a/e2e/support/gateway-common.sh b/e2e/support/gateway-common.sh
index d8acbd191..2f8a2c141 100644
--- a/e2e/support/gateway-common.sh
+++ b/e2e/support/gateway-common.sh
@@ -34,6 +34,22 @@ e2e_pick_port() {
   python3 -c 'import socket; s=socket.socket(); s.bind(("",0)); print(s.getsockname()[1]); s.close()'
 }
 
+e2e_generate_pki() {
+  local gateway_bin=$1
+  local pki_dir=$2
+  shift 2
+  # Remaining args are extra --server-san values (e.g. host.containers.internal).
+  # host.docker.internal and localhost are already in the default SAN list.
+
+  local san_args=()
+  san_args+=(--server-san host.openshell.internal)
+  for san in "$@"; do
+    san_args+=(--server-san "${san}")
+  done
+
+  "${gateway_bin}" generate-certs --output-dir "${pki_dir}" "${san_args[@]}"
+}
+
 e2e_register_plaintext_gateway() {
   local config_home=$1
   local name=$2
@@ -63,9 +79,9 @@ e2e_register_mtls_gateway() {
   local gateway_config_dir="${config_home}/openshell/gateways/${name}"
 
   mkdir -p "${gateway_config_dir}/mtls"
-  cp "${pki_dir}/ca.crt"     "${gateway_config_dir}/mtls/ca.crt"
-  cp "${pki_dir}/client.crt" "${gateway_config_dir}/mtls/tls.crt"
-  cp "${pki_dir}/client.key" "${gateway_config_dir}/mtls/tls.key"
+  cp "${pki_dir}/ca.crt"         "${gateway_config_dir}/mtls/ca.crt"
+  cp "${pki_dir}/client/tls.crt" "${gateway_config_dir}/mtls/tls.crt"
+  cp "${pki_dir}/client/tls.key" "${gateway_config_dir}/mtls/tls.key"
   cat >"${gateway_config_dir}/metadata.json" <<EOF
 {
   "name": "${name}",
diff --git a/e2e/with-docker-gateway.sh b/e2e/with-docker-gateway.sh
index 83e4185f2..ed920f3e4 100755
--- a/e2e/with-docker-gateway.sh
+++ b/e2e/with-docker-gateway.sh
@@ -234,10 +234,6 @@ if ! docker info >/dev/null 2>&1; then
   echo "ERROR: docker daemon is not reachable (docker info failed)" >&2
   exit 2
 fi
-if ! command -v openssl >/dev/null 2>&1; then
-  echo "ERROR: openssl is required to generate ephemeral PKI" >&2
-  exit 2
-fi
 if [ "${GPU_MODE}" = "1" ]; then
   DOCKER_CDI_SPEC_DIRS="$(docker info --format '{{json .CDISpecDirs}}' 2>/dev/null || true)"
   if [ -z "${DOCKER_CDI_SPEC_DIRS}" ] \
@@ -390,41 +386,7 @@ if ! docker image inspect "${SANDBOX_IMAGE}" >/dev/null 2>&1; then
 fi
 
 PKI_DIR="${WORKDIR}/pki"
-mkdir -p "${PKI_DIR}"
-cd "${PKI_DIR}"
-
-cat > openssl.cnf <<'EOF'
-[req]
-distinguished_name = dn
-prompt = no
-[dn]
-CN = openshell-server
-[san_server]
-subjectAltName = @alt_server
-[alt_server]
-DNS.1 = localhost
-DNS.2 = host.openshell.internal
-DNS.3 = host.docker.internal
-IP.1 = 127.0.0.1
-IP.2 = ::1
-[san_client]
-subjectAltName = DNS:openshell-client
-EOF
-
-openssl req -x509 -newkey rsa:2048 -nodes -days 30 \
-  -keyout ca.key -out ca.crt -subj "/CN=openshell-e2e-ca" >/dev/null 2>&1
-
-openssl req -newkey rsa:2048 -nodes -keyout server.key -out server.csr \
-  -config openssl.cnf >/dev/null 2>&1
-openssl x509 -req -in server.csr -CA ca.crt -CAkey ca.key -CAcreateserial \
-  -out server.crt -days 30 -extfile openssl.cnf -extensions san_server >/dev/null 2>&1
-
-openssl req -newkey rsa:2048 -nodes -keyout client.key -out client.csr \
-  -subj "/CN=openshell-client" >/dev/null 2>&1
-openssl x509 -req -in client.csr -CA ca.crt -CAkey ca.key -CAcreateserial \
-  -out client.crt -days 30 -extfile openssl.cnf -extensions san_client >/dev/null 2>&1
-
-cd "${ROOT}"
+e2e_generate_pki "${GATEWAY_BIN}" "${PKI_DIR}"
 
 HOST_PORT=$(e2e_pick_port)
 STATE_DIR="${WORKDIR}/state"
@@ -473,8 +435,8 @@ GATEWAY_CONFIG="${STATE_DIR}/gateway.toml"
   printf 'default_image = %s\n'        "$(toml_string "${SANDBOX_IMAGE}")"
   printf 'image_pull_policy = "IfNotPresent"\n'
   printf 'guest_tls_ca = %s\n'         "$(toml_string "${PKI_DIR}/ca.crt")"
-  printf 'guest_tls_cert = %s\n'       "$(toml_string "${PKI_DIR}/client.crt")"
-  printf 'guest_tls_key = %s\n'        "$(toml_string "${PKI_DIR}/client.key")"
+  printf 'guest_tls_cert = %s\n'       "$(toml_string "${PKI_DIR}/client/tls.crt")"
+  printf 'guest_tls_key = %s\n'        "$(toml_string "${PKI_DIR}/client/tls.key")"
   # DOCKER_SUPERVISOR_ARGS holds either ("--docker-supervisor-bin" "<path>")
   # or ("--docker-supervisor-image" "<image>"); both map to TOML keys on
   # the docker driver config.
@@ -498,8 +460,8 @@ GATEWAY_ARGS=(
   --bind-address 0.0.0.0
   --port "${HOST_PORT}"
   --drivers docker
-  --tls-cert "${PKI_DIR}/server.crt"
-  --tls-key "${PKI_DIR}/server.key"
+  --tls-cert "${PKI_DIR}/server/tls.crt"
+  --tls-key "${PKI_DIR}/server/tls.key"
   --tls-client-ca "${PKI_DIR}/ca.crt"
   --db-url "sqlite:${STATE_DIR}/gateway.db?mode=rwc"
 )
diff --git a/e2e/with-podman-gateway.sh b/e2e/with-podman-gateway.sh
index 727737d25..d3b93e51a 100755
--- a/e2e/with-podman-gateway.sh
+++ b/e2e/with-podman-gateway.sh
@@ -11,8 +11,8 @@
 #   - OPENSHELL_GATEWAY_ENDPOINT=http://host:port:
 #       Use the existing plaintext gateway endpoint and run the command.
 #
-# Podman e2e currently uses plaintext gateway traffic. The Podman driver does
-# not yet inject gateway mTLS client materials into sandbox containers.
+# HTTPS endpoint-only mode is intentionally unsupported here. Use a named
+# gateway config when mTLS materials are needed.
 
 set -euo pipefail
 
@@ -277,12 +277,12 @@ if [ -n "${OPENSHELL_GATEWAY_ENDPOINT:-}" ]; then
   case "${OPENSHELL_GATEWAY_ENDPOINT}" in
     http://*) ;;
     https://*)
-      echo "ERROR: OPENSHELL_GATEWAY_ENDPOINT endpoint mode is HTTP-only for Podman e2e." >&2
-      echo "       Podman e2e does not yet support sandbox mTLS client material injection." >&2
+      echo "ERROR: OPENSHELL_GATEWAY_ENDPOINT endpoint mode is HTTP-only for e2e." >&2
+      echo "       Register a named gateway with mTLS config instead of using a raw HTTPS endpoint." >&2
       exit 2
       ;;
     *)
-      echo "ERROR: OPENSHELL_GATEWAY_ENDPOINT must start with http:// for Podman e2e endpoint mode." >&2
+      echo "ERROR: OPENSHELL_GATEWAY_ENDPOINT must start with http:// for e2e endpoint mode." >&2
       exit 2
       ;;
   esac
@@ -328,6 +328,9 @@ if ! podman_cmd image exists "${SANDBOX_IMAGE}" 2>/dev/null; then
   podman_cmd pull "${SANDBOX_IMAGE}"
 fi
 
+PKI_DIR="${WORKDIR}/pki"
+e2e_generate_pki "${GATEWAY_BIN}" "${PKI_DIR}" "host.containers.internal"
+
 HOST_PORT=$(e2e_pick_port)
 HEALTH_PORT=$(e2e_pick_port)
 STATE_DIR="${WORKDIR}/state"
@@ -366,6 +369,9 @@ GATEWAY_CONFIG="${STATE_DIR}/gateway.toml"
   printf 'default_image = %s\n'  "$(toml_string "${SANDBOX_IMAGE}")"
   printf 'image_pull_policy = "missing"\n'
   printf 'supervisor_image = %s\n' "$(toml_string "${SUPERVISOR_IMAGE}")"
+  printf 'guest_tls_ca = %s\n'     "$(toml_string "${PKI_DIR}/ca.crt")"
+  printf 'guest_tls_cert = %s\n'   "$(toml_string "${PKI_DIR}/client/tls.crt")"
+  printf 'guest_tls_key = %s\n'    "$(toml_string "${PKI_DIR}/client/tls.key")"
   # The in-process Podman driver reads `socket_path` from TOML only — the
   # OPENSHELL_PODMAN_SOCKET env var is honoured by the standalone driver
   # binary, not the in-process driver used here. Pin the socket to the one
@@ -382,7 +388,9 @@ GATEWAY_ARGS=(
   --port "${HOST_PORT}"
   --health-port "${HEALTH_PORT}"
   --drivers podman
-  --disable-tls
+  --tls-cert "${PKI_DIR}/server/tls.crt"
+  --tls-key "${PKI_DIR}/server/tls.key"
+  --tls-client-ca "${PKI_DIR}/ca.crt"
   --db-url "sqlite:${STATE_DIR}/gateway.db?mode=rwc"
   --log-level info
 )
@@ -401,12 +409,13 @@ GATEWAY_PID=$!
 printf '%s\n' "${GATEWAY_PID}" >"${GATEWAY_PID_FILE}"
 
 GATEWAY_NAME="openshell-e2e-podman-${HOST_PORT}"
-CLI_GATEWAY_ENDPOINT="http://127.0.0.1:${HOST_PORT}"
-e2e_register_plaintext_gateway \
+CLI_GATEWAY_ENDPOINT="https://127.0.0.1:${HOST_PORT}"
+e2e_register_mtls_gateway \
   "${XDG_CONFIG_HOME}" \
   "${GATEWAY_NAME}" \
   "${CLI_GATEWAY_ENDPOINT}" \
-  "${HOST_PORT}"
+  "${HOST_PORT}" \
+  "${PKI_DIR}"
 
 export OPENSHELL_GATEWAY="${GATEWAY_NAME}"
 export OPENSHELL_PROVISION_TIMEOUT="${OPENSHELL_PROVISION_TIMEOUT:-300}"