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<?php |
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namespace Rogierw\RwAcme\Support; |
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use OpenSSLAsymmetricKey; |
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use RuntimeException; |
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class OpenSsl |
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{ |
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public static function generatePrivateKey(): OpenSSLAsymmetricKey |
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{ |
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return openssl_pkey_new([ |
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'private_key_bits' => 2048, |
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'digest_alg' => 'sha256', |
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]); |
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} |
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public static function openSslKeyToString(OpenSSLAsymmetricKey $key): string |
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{ |
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if (!openssl_pkey_export($key, $output)) { |
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throw new RuntimeException('Exporting SSL key failed.'); |
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} |
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return trim($output); |
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} |
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public static function generateCsr(array $domains, OpenSSLAsymmetricKey $privateKey): string |
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{ |
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$dn = ['commonName' => $domains[0]]; |
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$san = implode(',', array_map(function ($dns) { |
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return 'DNS:' . $dns; |
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}, $domains)); |
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$tempFile = tmpfile(); |
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fwrite( |
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$tempFile, |
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'HOME = . |
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RANDFILE = $ENV::HOME/.rnd |
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[ req ] |
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default_bits = 4096 |
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default_keyfile = privkey.pem |
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distinguished_name = req_distinguished_name |
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req_extensions = v3_req |
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[ req_distinguished_name ] |
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countryName = Country Name (2 letter code) |
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[ v3_req ] |
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basicConstraints = CA:FALSE |
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subjectAltName = ' . $san . ' |
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keyUsage = nonRepudiation, digitalSignature, keyEncipherment' |
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); |
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$csr = openssl_csr_new($dn, $privateKey, [ |
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'digest_alg' => 'sha256', |
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'config' => stream_get_meta_data($tempFile)['uri'], |
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]); |
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fclose($tempFile); |
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if (!openssl_csr_export($csr, $out)) { |
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throw new RuntimeException('Exporting CSR failed.'); |
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} |
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return trim($out); |
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} |
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} |
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RogierW /
rw-acme-client
