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certificate-authority

Overview

A tool for creating and managing a functioning intranet certificate authority. Designed to live in a small encrypted file container.

Usage

Use the data/globals.sh-sample as a template to create data/globals.sh :

# Private Key Length
BITS=2048

# Nickname will be the CN of the certificate
NICKNAME="Widgets Incorporated Root CA"

# Organization or company name
ORGANIZATION="Widgets Incorporated"

# Country code
COUNTRY="US"

# CA certificate URL (optional, comment out if not used)
CRT_URL="pki.widgets.com/root.crt"

# Certificate revocation list URL (optional, comment out if not used)
CRL_URL="pki.widgets.com/root.crl"

Generate CA key, certificate and other data :

./authority-generate.sh

The '/media/crypt/data/private/random_seed' is missing, making a new one
Generating an openssl configuration file in /media/crypt/data/generated.cnf
Generating a 2048 bit private RSA key
Generating a self signed certificate with for Widgets Incorporated Root CA
The CA serial number tracker is missing, a new one will be generated.
The CA revocation number tracker is missing, a new one will be generated.
The CA index is missing, a new one will be generated.
All done, you can now distribute '/media/crypt/data/Widgets Incorporated Root CA.crt' to your users

Generate a certificate for one of your servers :

./request-generate.sh ilo.example.com
Generating a 2048 bit private key
Generating a certificate signing request
Generated CSR with the filename '/media/crypt/data/ilo.example.com/ilo.example.com.csr'
If you now wish to sign it, use:
No aliases:          ./request-sign.sh ilo.example.com
Web server alias:    ./request-sign.sh ilo.example.com www.ilo.example.com
Wildcard:            ./request-sign.sh ilo.example.com *.ilo.example.com

Sign the request with the certificate authority :

./request-sign.sh ilo.example.com *.ilo.example.com
Generating a /media/crypt/data/conf/usr_cert.cnf openssl config file
Including DNS alias: *.ilo.example.com
Generating an openssl configuration file in /media/crypt/data/generated.cnf
Using configuration from /media/crypt/data/generated.cnf
Check that the request matches the signature
Signature ok
Certificate Details:
        Serial Number: 223195403517952 (0xcafebabe0000)
        Validity
            Not Before: Sep 14 21:14:08 2013 GMT
            Not After : Sep 14 21:14:08 2014 GMT
        Subject:
            countryName               = US
            organizationName          = Widgets Incorporated
            commonName                = ilo.example.com
        X509v3 extensions:
            X509v3 Extended Key Usage: 
                TLS Web Server Authentication, TLS Web Client Authentication
            X509v3 Subject Alternative Name: 
                DNS:ilo.example.com, DNS:*.ilo.example.com
            Authority Information Access: 
                CA Issuers - URI:pki.widgets.com/root.crt

            X509v3 Subject Key Identifier: 
                C7:4A:A1:EB:D1:43:56:28:DB:EA:DF:DC:AA:90:97:33:23:73:7B:70
            X509v3 Authority Key Identifier: 
                keyid:0F:B1:D0:2E:A5:52:F8:FE:75:32:B2:9F:AE:33:A1:4C:6B:37:3B:A2

            X509v3 CRL Distribution Points: 

                Full Name:
                  URI:pki.widgets.com/root.crl

            X509v3 Basic Constraints: 
                CA:FALSE
Certificate is to be certified until Sep 14 21:14:08 2014 GMT (365 days)

Write out database with 1 new entries
Data Base Updated
Signed a certificate with the filename '/media/crypt/data/ilo.example.com/ilo.example.com.crt'

Tips

Keep your private keys, private. Save them on encrypted storage such as TrueCrypt or keep them on a machine that's isolated from the network with resonable physical security.

##Copyright and License

Copyright (C) 2013 Stan Borbat

Stan Borbat can be contacted at: stan@borbat.com

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.

History

  • 2017-11-20 ... -im- ... support for DNS and IP aliases in CSR - simple add aliases as parameters to request-generate.sh
  • 2017-08-10 ... -im- ... support for IP aliases - start alias parameter with IP: prefix
  • 2013-09-04 ... -on- ... initial