137 lines
11 KiB
HTML
137 lines
11 KiB
HTML
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<!-- Inferencium - Website - Documentation - OpenSSL Self-signed Certificate Chain -->
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<h1 id="openssl_selfsigned_certificate_chain"><a href="#openssl_selfsigned_certificate_chain">Documentation - OpenSSL Self-signed Certificate Chain</a></h1>
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<section id="introduction">
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<p>This documentation contains the complete set of commands to create a new OpenSSL
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self-signed certificate chain with V3 subjectAltName (SAN) extensions enabled. Multiple
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SANs can be included in a certificate by adding each domain as a comma-delimited string.
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Each key can be encrypted or unencrypted, with multiple encryption options; AES
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(<code>aes128</code> or <code>aes256</code>) is recommended. Optional verification can
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also be performed between multiple levels of certificates to ensure the chain of trust
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is valid.</p>
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<p>This documentation is also available in portable AsciiDoc format in my
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<a href="https://src.inferencium.net/Inferencium/doc/src/branch/stable/security/openssl_selfsigned_certificate_chain.adoc">documentation source code repository</a>.</p>
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</section>
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<nav id="toc">
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<h2><a href="#toc">Table of Contents</a></h2>
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<ul>
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<li><a href="#create_certificate_authority_key">Create Certificate Authority Key</a></li>
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<li><a href="#verify_certificate_authority_key">Verify Certificate Authority Key</a></li>
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<li><a href="#create_certificate_authority_certificate">Create Certificate Authority Certificate</a></li>
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<li><a href="#convert_certificate_to_pem_format">Convert Certificate to PEM Format</a></li>
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<li><a href="#verify_certificate_authority_certificate">Verify Certificate Authority Certificate</a></li>
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<li><a href="#create_intermediate_certificate_authority_key">Create Intermediate Certificate Authority Key</a></li>
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<li><a href="#verify_intermediate_certificate_authority_key">Verify Intermediate Certificate Authority Key</a></li>
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<li><a href="#create_intermediate_certificate_authority_signing_request">Create Intermediate Certificate Signing Request</a></li>
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<li><a href="#create_intermediate_certificate_authority_certificate">Create Intermediate Certificate Authority Certificate</a></li>
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<li><a href="#verify_intermediate_certificate_authority_certificate">Verify Intermediate Certificate Authority Certificate</a></li>
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<li><a href="#verify_chain_of_trust-ca_to_intermediate">Verify Chain of Trust (CA to Intermediate)</a></li>
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<li><a href="#create_server_key">Create Server Key</a></li>
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<li><a href="#verify_server_key">Verify Server Key</a></li>
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<li><a href="#create_server_certificate_signing_request">Create Server Cerificate Signing Request</a></li>
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<li><a href="#create_server_certificate">Create Server Certificate</a></li>
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<li><a href="#verify_server_certificate">Verify Server Certificate</a></li>
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<li><a href="#verify_chain_of_trust-intermediate_to_server">Verify Chain of Trust (Intermediate to Server)</a></li>
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</ul>
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</nav>
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<section id="create_certificate_authority_key">
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<h2><a href="#create_certificate_authority_key">Create Certificate Authority Key</a></h2>
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<p><code>openssl genrsa <var><encryption type></var> -out <var><CA key name></var>.pem <var><key size></var></code></p>
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</section>
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<section id="verify_certificate_authority_key">
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<h2><a href="#verify_certificate_authority_key">Verify Certificate Authority Key</a></h2>
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<p><code>openssl rsa -noout -text -in <var><CA key name></var>.pem</code></p>
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</section>
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<section id="create_certificate_authority_certificate">
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<h2><a href="#create_certificate_authority_certificate">Create Certificate Authority Certificate</a></h2>
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<p><code>openssl req -new -x509 -days <var><days of validity></var> -extensions v3_ca -key <var><CA key name></var>.pem -out <var><CA certificate name></var>.pem</code></p>
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</section>
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<section id="convert_certificate_to_pem_format">
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<h2><a href="#convert_certificate_to_pem_format">Convert Certificate to PEM Format</a></h2>
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<p><code>openssl x509 -in <var><CA certificate name></var>.pem -out <var><CA certificate name></var>.pem -outform PEM</code></p>
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</section>
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<section id="verify_certificate_authority_certificate">
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<h2><a href="#verify_certificate_authority_certificate">Verify Certificate Authority Certificate</a></h2>
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<p><code>openssl x509 -noout -text -in <var><CA certificate name></var>.pem</code></p>
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</section>
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<section id="create_intermediate_certificate_authority_key">
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<h2><a href="#create_intermediate_certificate_authority_key">Create Intermediate Certificate Authority Key</a></h2>
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<p><code>openssl genrsa <var><encryption type></var> -out <var><intermediate CA key name></var>.pem <var><key size></var></code></p>
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</section>
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<section id="verify_intermediate_certificate_authority_key">
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<h2><a href="#verify_intermediate_certificate_authority_key">Verify Intermediate Certificate Authority Key</a></h2>
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<p><code>openssl rsa -noout -text -in <var><intermediate CA key name></var>.pem</code></p>
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</section>
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<section id="create_intermediate_certificate_authority_signing_request">
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<h2><a href="#create_intermediate_certificate_authority_signing_request">Create Intermediate Certificate Authority Signing Request</a></h2>
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<p><code>openssl req -new -sha256 -key <var><intermediate CA key name></var>.pem -out <var><intermediate CA certificate signing request name></var>.pem</code></p>
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</section>
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<section id="create_intermediate_certificate_authority_certificate">
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<h2><a href="#create_intermediate_certificate_authority_certificate">Create Intermediate Certificate Authority Certificate</a></h2>
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<p><code>openssl ca -config <var><intermediate CA configuration file></var> -extensions v3_intermediate_ca -days <var><days of validity></var> -notext -md sha256 -in <var><intermediate CA signing request name></var>.pem -out <var><intermediate CA certificate name></var>.pem</code></p>
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</section>
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<section id="verify_intermediate_certificate_authority_certificate">
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<h2><a href="#verify_intermediate_certificate_authority_certificate">Verify Intermediate Certificate Authority Certificate</a></h2>
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<p><code>openssl x509 -noout -text -in <var><intermediate CA certificate name></var>.pem</code></p>
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</section>
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<section id="verify_chain_of_trust-ca_to_intermediate">
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<h2><a href="#verify_chain_of_trust-ca_to_intermediate">Verify Chain of Trust (CA to Intermediate)</a></h2>
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<p><code>openssl verify -CAfile <var><CA certificate name></var>.pem <var><intermediate CA certificate name></var>.pem</code></p>
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</section>
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<section id="create_server_key">
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<h2><a href="#create_server_key">Create Server Key</a></h2>
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<p><code>openssl genrsa <var><encryption type></var> -out <var><server key name></var>.pem <var><key size></var></code></p>
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</section>
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<section id="verify_server_key">
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<h2><a href="#verify_server_key">Verify Server Key</a></h2>
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<p><code>openssl rsa -noout -text -in <var><server key name></var>.pem</code></p>
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</section>
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<section id="create_server_certificate_signing_request">
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<h2><a href="#create_server_certificate_signing_request">Create Server Certificate Signing Request</a></h2>
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<p><code>openssl req -new -sha256 -subj "/C=<var><country></var>/ST=<var><state/province></var>/L=<var><locality></var>/O=<var><organization></var>/CN=<var><common name></var>" -addext "subjectAltName = DNS.1:<var><alternative DNS entry></var>" -key <var><server key name></var>.pem -out <var><server certificate signing request name></var>.pem</code></p>
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</section>
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<section id="create_server_certificate">
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<h2><a href="#create_server_certificate">Create Server Certificate</a></h2>
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<p><code>openssl x509 -sha256 -req -days <var><days of validity></var> -in <var><server certificate signing request name></var>.pem -CA <var><intermediate CA certificate name></var>.pem -CAkey <var><intermediate CA key name></var>.pem -extensions SAN -extfile <(cat /etc/ssl/openssl.cnf <(printf "\n[SAN]\nsubjectAltName=DNS.1:")) -out <var><server certificate name></var>.pem</code></p>
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</section>
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<section id="verify_server_certificate">
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<h2><a href="#verify_server_certificate">Verify Server Certificate</a></h2>
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<p><code>openssl x509 -noout -text -in <var><server certificate name></var>.pem</code></p>
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</section>
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<section id="verify_chain_of_trust-intermediate_to_server">
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<h2><a href="#verify_chain_of_trust-intermediate_to_server">Verify Chain of Trust (Intermediate to Server)</a></h2>
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<p><code>openssl verify -CAfile <var><intermediate CA certificate name></var>.pem <var><server certificate></var>.pem</code></p>
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</section>
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