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#!/bin/bash
# Copyright 2016 The Chromium Authors. All rights reserved.
# Use of this source code is governed by a BSD-style license that can be
# found in the LICENSE file.
# This script generates self-signed-invalid-name.pem and
# self-signed-invalid-sig.pem, which are "self-signed" test certificates with
# invalid names/signatures, respectively.
set -e
rm -rf out
mkdir out
openssl genrsa -out out/bad-self-signed.key 2048
touch out/bad-self-signed-index.txt
# Create two certificate requests with the same key, but different subjects
SUBJECT_NAME="req_self_signed_a" \
openssl req \
-new \
-key out/bad-self-signed.key \
-out out/ss-a.req \
-config ee.cnf
SUBJECT_NAME="req_self_signed_b" \
openssl req \
-new \
-key out/bad-self-signed.key \
-out out/ss-b.req \
-config ee.cnf
# Create a normal self-signed certificate from one of these requests
openssl x509 \
-req \
-in out/ss-a.req \
-out out/bad-self-signed-root-a.pem \
-signkey out/bad-self-signed.key \
-days 3650
# To invalidate the signature without changing names, replace two bytes from the
# end of the certificate with 0xdead.
openssl x509 -in out/bad-self-signed-root-a.pem -outform DER \
| head -c -2 \
> out/bad-sig.der.1
echo -n -e "\xde\xad" > out/bad-sig.der.2
cat out/bad-sig.der.1 out/bad-sig.der.2 \
| openssl x509 \
-inform DER \
-outform PEM \
-out out/cert-self-signed-invalid-sig.pem
openssl x509 \
-text \
-noout \
-in out/cert-self-signed-invalid-sig.pem \
> out/self-signed-invalid-sig.pem
cat out/cert-self-signed-invalid-sig.pem >> out/self-signed-invalid-sig.pem
# Make a "self-signed" certificate with mismatched names
openssl x509 \
-req \
-in out/ss-b.req \
-out out/cert-self-signed-invalid-name.pem \
-days 3650 \
-CA out/bad-self-signed-root-a.pem \
-CAkey out/bad-self-signed.key \
-CAserial out/bad-self-signed-serial.txt \
-CAcreateserial
openssl x509 \
-text \
-noout \
-in out/cert-self-signed-invalid-name.pem \
> out/self-signed-invalid-name.pem
cat out/cert-self-signed-invalid-name.pem >> out/self-signed-invalid-name.pem
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