snapshot of https://github.com/grpc/grpc-go.git (master, 2026-09-15; blobs > 131072B omitted)

testdata/spiffe_end2end/intermediate_gen.sh

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+#!/bin/bash
+# Copyright 2025 gRPC authors.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+set -e
+
+# Meant to be run from testdata/spiffe_end2end/
+# Sets up an intermediate ca, generates certificates, then copies then up and deletes unnecessary files
+
+rm -rf intermediate_ca
+mkdir intermediate_ca
+cp intermediate.cnf intermediate_ca/
+cp spiffe-openssl.cnf intermediate_ca/
+pushd intermediate_ca
+
+# Generating the intermediate CA
+openssl genrsa -out temp.rsa 2048
+openssl pkcs8 -topk8 -in temp.rsa -out intermediate_ca.key -nocrypt
+rm temp.rsa
+openssl req -key intermediate_ca.key -new -out temp.csr -config intermediate.cnf
+openssl x509 -req -days 3650 -in temp.csr -CA "../ca.pem" -CAkey "../ca.key" -CAcreateserial -out intermediate_ca.pem -extfile intermediate.cnf  -extensions 'v3_req'
+
+# Generating the leaf and chain
+openssl genrsa -out temp.rsa 2048
+openssl pkcs8 -topk8 -in temp.rsa -out leaf_signed_by_intermediate.key -nocrypt
+openssl req -new -key leaf_signed_by_intermediate.key -out spiffe-cert.csr \
+ -subj /C=US/ST=CA/L=SVL/O=gRPC/CN=testserver/ \
+ -config spiffe-openssl.cnf -reqexts spiffe_server_e2e
+openssl x509 -req -CA intermediate_ca.pem -CAkey intermediate_ca.key -CAcreateserial \
+ -in spiffe-cert.csr -out leaf_signed_by_intermediate.pem -extensions spiffe_server_e2e \
+  -extfile spiffe-openssl.cnf -days 3650 -sha256
+cat leaf_signed_by_intermediate.pem intermediate_ca.pem > leaf_and_intermediate_chain.pem
+
+popd
+
+# Copy files up to the higher directory
+cp "./intermediate_ca/leaf_signed_by_intermediate.key" ./
+cp "./intermediate_ca/leaf_signed_by_intermediate.pem" ./
+cp "./intermediate_ca/leaf_and_intermediate_chain.pem" ./
+cp "./intermediate_ca/intermediate_ca.key" ./
+cp "./intermediate_ca/intermediate_ca.pem" ./
+
+rm ca.srl
+rm -rf intermediate_ca