Add more Certificate Serial Number, Subject and Authority Key IDs

app/Classes/LDAP/Attribute/Certificate.php

@@ -4,6 +4,7 @@ namespace App\Classes\LDAP\Attribute;
 
 use Carbon\Carbon;
 use Illuminate\Support\Arr;
+use Illuminate\Support\Str;
 
 use App\Classes\LDAP\Attribute;
 use App\Traits\MD5Updates;
@@ -17,6 +18,15 @@ final class Certificate extends Attribute
 
 	private array $_object = [];
 
+	public function authority_key_identifier(int $key=0): string
+	{
+		$data = collect(explode("\n",$this->cert_info('extensions.authorityKeyIdentifier',$key)));
+		return $data
+			->filter(fn($item)=>Str::startsWith($item,'keyid:'))
+			->map(fn($item)=>Str::after($item,'keyid:'))
+			->first();
+	}
+
 	public function certificate(int $key=0): string
 	{
 		return sprintf("-----BEGIN CERTIFICATE-----\n%s\n-----END CERTIFICATE-----",
@@ -29,19 +39,23 @@ final class Certificate extends Attribute
 		if (! array_key_exists($key,$this->_object))
 			$this->_object[$key] = openssl_x509_parse(openssl_x509_read($this->certificate($key)));
 
-
 		return Arr::get($this->_object[$key],$index);
 	}
 
-	public function expires($key=0): Carbon
+	public function expires(int $key=0): Carbon
 	{
 		return Carbon::createFromTimestampUTC($this->cert_info('validTo_time_t',$key));
 	}
 
-	public function subject($key=0): string
+	public function subject(int $key=0): string
 	{
 		$subject = collect($this->cert_info('subject',$key))->reverse();
 
 		return $subject->map(fn($item,$key)=>sprintf("%s=%s",$key,$item))->join(',');
 	}
+
+	public function subject_key_identifier(int $key=0): string
+	{
+		return $this->cert_info('extensions.subjectKeyIdentifier',$key);
+	}
 }