PDF Octet plage invalide

Cette question suit cette one. Je signe le pdf par programme. Chaque nouvelle signature est ajoutée de manière incrémentielle lorsque j'ajoute le dictionnaire de signatures après le% EOF. Tout fonctionne bien avec une signature, je reçois la coche verte et ma signature est valide comme vous pouvez le voir dans la question précédente. Mon problème vient quand je tente de signer une deuxième fois, je reçois ces erreurs:PDF Octet plage invalide

Ce que je ne comprends pas que ma façon de calculer la plage d'octets n'a pas changé et fonctionne très bien avec 1 Signature. Est-ce que je manque quelque chose? Voici mon fichier en tant que chaîne car je ne peux pas utiliser n'importe quel uploader de fichier à cause de mon proxy. Dites-moi si vous avez besoin de plus d'informations, merci.

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je mets « ... » dans la deuxième signature en raison de la limitation de caractère de débordement de la pile, mais il est de la même longueur que le premier.

EDIT: Voici le lien vers le premier signé PDF et est ici le lien vers la second qui est signé deux fois.

Source

2017-08-07 Shashimee

si vous m'envoyez les deux PDF (premier signé et deuxième signé) je pourrais regarder de plus près –

@Patrick J'ai essayé le cours de la question précédente de l'op pour préciser qu'une copie binaire est requise. L'op n'a pas fourni un problème indiquant le partage de fichiers PDF de son travail. – mkl

Eh bien, je peux vous envoyer les deux fichiers par courrier, mais tous les sites d'hébergement de fichiers sont bloqués:/ – Shashimee

Dans votre dernière table de référence croisée

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tous les décalages d'objets utilisés, à l'exception de l'objet 1 sont trop faibles par rapport 7. Votre référence à la table de référence croisée

startxref 
28478

est également trop faible De telles erreurs de références croisées font qu'Adobe Reader "répare" le fichier lors du chargement, ce qui en particulier provoque le déplacement des objets existants, etc.

Il est évident que le déplacement d'objets dans le fichier rendra invalides les offsets de plage d'octets signés précédemment corrects.

Je répara la fin de votre fichier ici pour

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et maintenant la première signature est reportée comme valide et le second comme invalide en raison de modifications ou de corruption après signature - ce qui est correct, après tout ce que je changé quelque chose - mais pas en raison de problèmes de gamme d'octets:

PS: Sans les fichiers d'origine binaires tels problèmes peuvent être trouvés à peine que les compensations en vos internats PDF collés sont incorrects de toute façon et il faudrait essayer d'identifier différents types d'inexactitude ...

Source

2017-08-09 09:13:52 mkl

Awesome! Je n'aurais pas trouvé ça, je sais exactement d'où ça vient.Vous m'avez vraiment sauvé :) – Shashimee

Si vous êtes en place pour plus d'action PDF, j'ai posté une autre question haha: https://stackoverflow.com/questions/45584622/add-digital-signature-appearance-programmatically – Shashimee

Un autre problème est que le Les annotations Widget ne sont pas répertoriées dans le tableau Annot (non défini du tout) des pages. –

PDF Octet plage invalide

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