Code Coverage
 
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Functions and Methods
Classes and Traits
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SignatureReference
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 __construct
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 4.02
1<?php
2
3declare(strict_types=1);
4
5namespace Phpdftk\Pdf\Core\Interactive\Signature;
6
7use Phpdftk\Pdf\Core\PdfArray;
8use Phpdftk\Pdf\Core\PdfDictionary;
9use Phpdftk\Pdf\Core\PdfName;
10use Phpdftk\Pdf\Core\PdfObject;
11use Phpdftk\Pdf\Core\PdfReference;
12use Phpdftk\Pdf\Core\PdfString;
13use Phpdftk\Pdf\Core\PdfVersion;
14use Phpdftk\Pdf\Core\RequiresPdfVersion;
15
16/**
17 * Signature reference dictionary (/Type /SigRef) — ISO 32000-2 §12.8.1,
18 * Table 253. Referenced by /Reference on a SignatureValue; each entry
19 * names a transform method plus its params.
20 */
21#[RequiresPdfVersion(PdfVersion::V1_3)]
22class SignatureReference extends PdfObject
23{
24    public const PDF_TYPE = 'SigRef';
25
26    public PdfName $transformMethod;                                 // /TransformMethod
27    public TransformParams|PdfReference|PdfDictionary|null $transformParams = null; // /TransformParams
28    public ?PdfReference $data = null;                               // /Data
29    public ?PdfName $digestMethod = null;                            // /DigestMethod  MD5|SHA1|SHA256|SHA384|SHA512|RIPEMD160
30
31    public function __construct(string $transformMethod)
32    {
33        $this->transformMethod = new PdfName($transformMethod);
34    }
35
36    public function toPdf(): string
37    {
38        $dict = new PdfDictionary();
39        $dict->set('Type', new PdfName(self::PDF_TYPE));
40        $dict->set('TransformMethod', $this->transformMethod);
41        if ($this->transformParams !== null) {
42            $dict->set('TransformParams', $this->transformParams);
43        }
44        if ($this->data !== null) {
45            $dict->set('Data', $this->data);
46        }
47        if ($this->digestMethod !== null) {
48            $dict->set('DigestMethod', $this->digestMethod);
49        }
50        return $dict->toPdf();
51    }
52}