{"@attributes":{"version":"2.0"},"channel":{"title":"Documentation \u2013 Classe PdfFileSecurity","link":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/pdffilesecurity-class\/","description":"Recent content in Classe PdfFileSecurity on Documentation","generator":"Hugo -- gohugo.io","language":"fr","lastBuildDate":"Sat, 05 Jun 2021 00:00:00 +0000","item":[{"title":"Java: Crypter un fichier PDF","link":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/encrypt-pdf-file\/","pubDate":"Sat, 05 Jun 2021 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/encrypt-pdf-file\/","description":"\n \n \n

Crypter un fichier PDF en utilisant diff\u00e9rents types et algorithmes de cryptage<\/h2>\n

Pour crypter un fichier PDF, vous devez cr\u00e9er un objet PdfFileSecurity<\/a> puis appeler la m\u00e9thode EncryptFile<\/a>. Vous pouvez passer un mot de passe utilisateur, un mot de passe propri\u00e9taire et des privil\u00e8ges \u00e0 la m\u00e9thode EncryptFile<\/a>. Vous devez \u00e9galement passer les valeurs KeySize et Algorithm \u00e0 cette m\u00e9thode.<\/p>\n

Le code ci-dessous montre comment crypter un fichier PDF.<\/p>\n

    <\/span>public<\/span> <\/span>static<\/span> <\/span>void<\/span> <\/span>EncryptPDFFile<\/span>()<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet PdfFileSecurity<\/span>\n<\/span><\/span><\/span>        <\/span>PdfFileSecurity<\/span> <\/span>fileSecurity<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileSecurity<\/span>();<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>bindPdf<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Crypter le fichier en utilisant un cryptage 256 bits<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>encryptFile<\/span>(<\/span>"User_P@ssw0rd"<\/span>,<\/span> <\/span>"OwnerP@ssw0rd"<\/span>,<\/span> <\/span>DocumentPrivilege<\/span>.<\/span>getPrint<\/span>(),<\/span> <\/span>KeySize<\/span>.<\/span>x256<\/span>,<\/span>\n<\/span><\/span><\/span>                <\/span>Algorithm<\/span>.<\/span>AES<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>save<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>    <\/span>}<\/span>\n<\/span><\/span><\/span><\/code><\/pre><\/div>\n      "},{"title":"Java: D\u00e9crypter un fichier PDF","link":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/decrypt-pdf-file\/","pubDate":"Sat, 05 Jun 2021 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/decrypt-pdf-file\/","description":"\n        \n        \n        
D\u00e9crypter un fichier PDF en utilisant le mot de passe propri\u00e9taire<\/h2>\n\n\n
\n\nEssayez en ligne 
\nVous pouvez essayer de d\u00e9verrouiller le document en utilisant Aspose.PDF et obtenir les r\u00e9sultats en ligne \u00e0 ce lien :\nproducts.aspose.app\/pdf\/unlock<\/a>\n<\/div>\n\n
Pour d\u00e9crypter un fichier PDF, vous devez cr\u00e9er un objet PdfFileSecurity<\/a> puis appeler la m\u00e9thode DecryptFile<\/a>. Vous devez \u00e9galement passer le mot de passe propri\u00e9taire \u00e0 la m\u00e9thode DecryptFile<\/a>. Le code suivant montre comment d\u00e9crypter un fichier PDF.<\/p>\n
    <\/span>public<\/span> <\/span>static<\/span> <\/span>void<\/span> <\/span>DecryptPDFFile<\/span>()<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>        <\/span>PdfFileInfo<\/span> <\/span>pdfFileInfo<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileInfo<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet PdfFileSecurity<\/span>\n<\/span><\/span><\/span>        <\/span>if<\/span> <\/span>(<\/span>pdfFileInfo<\/span>.<\/span>isEncrypted<\/span>())<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>            <\/span>PdfFileSecurity<\/span> <\/span>fileSecurity<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileSecurity<\/span>();<\/span>\n<\/span><\/span><\/span>            <\/span>fileSecurity<\/span>.<\/span>bindPdf<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>            <\/span>\/\/ D\u00e9crypter le document PDF<\/span>\n<\/span><\/span><\/span>            <\/span>fileSecurity<\/span>.<\/span>decryptFile<\/span>(<\/span>"User_P@ssw0rd"<\/span>);<\/span>\n<\/span><\/span><\/span>            <\/span>fileSecurity<\/span>.<\/span>save<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_decrtypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>}<\/span>\n<\/span><\/span><\/span>    <\/span>}<\/span>\n<\/span><\/span><\/span><\/code><\/pre><\/div>\n      "},{"title":"Java: Contr\u00f4ler les Exceptions du Fichier PDF","link":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/control-exception\/","pubDate":"Sat, 05 Jun 2021 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/control-exception\/","description":"\n        \n        \n        
Si vous d\u00e9finissez setAllowExceptions<\/a> sur true, alors vous pouvez obtenir le r\u00e9sultat de l’op\u00e9ration en utilisant l’op\u00e9rateur try-catch.<\/p>\n
    <\/span>public<\/span> <\/span>static<\/span> <\/span>void<\/span> <\/span>ControlExceptionPDFFile<\/span>()<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>        <\/span>PdfFileSecurity<\/span> <\/span>fileSecurity<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileSecurity<\/span>();<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>bindPdf<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>setAllowExceptions<\/span>(<\/span>false<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ D\u00e9chiffrer le document PDF<\/span>\n<\/span><\/span><\/span>\n<\/span><\/span><\/span>        <\/span>if<\/span> <\/span>(<\/span>!<\/span>fileSecurity<\/span>.<\/span>decryptFile<\/span>(<\/span>"IncorrectPassword"<\/span>))<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>            <\/span>System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>"Quelque chose ne va pas..."<\/span>);<\/span>\n<\/span><\/span><\/span>            <\/span>System<\/span>.<\/span>out<\/span>.<\/span>println<\/span>(<\/span>"Derni\u00e8re exception : "<\/span> <\/span>+<\/span> <\/span>fileSecurity<\/span>.<\/span>getLastException<\/span>().<\/span>getMessage<\/span>());<\/span>\n<\/span><\/span><\/span>        <\/span>}<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>save<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_decrtypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>    <\/span>}<\/span>\n<\/span><\/span><\/span><\/code><\/pre><\/div>\n      "},{"title":"Java: Changer le mot de passe d'un fichier PDF","link":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/change-password\/","pubDate":"Sat, 05 Jun 2021 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/change-password\/","description":"\n        \n        \n        
Changer le mot de passe d’un fichier PDF<\/h2>\n
Pour changer le mot de passe d’un fichier PDF, vous devez cr\u00e9er un objet PdfFileSecurity<\/a> puis appeler la m\u00e9thode ChangePassword<\/a>. Vous devez passer l’ancien mot de passe propri\u00e9taire et les nouveaux mots de passe utilisateur et propri\u00e9taire \u00e0 la m\u00e9thode ChangePassword<\/a>.<\/p>\n
Le code suivant vous montre comment changer les mots de passe d’un fichier PDF.<\/p>\n
    <\/span>public<\/span> <\/span>static<\/span> <\/span>void<\/span> <\/span>ChangePassword<\/span>()<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>        <\/span>PdfFileInfo<\/span> <\/span>pdfFileInfo<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileInfo<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet PdfFileSecurity<\/span>\n<\/span><\/span><\/span>        <\/span>if<\/span> <\/span>(<\/span>pdfFileInfo<\/span>.<\/span>isEncrypted<\/span>())<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>            <\/span>PdfFileSecurity<\/span> <\/span>fileSecurity<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileSecurity<\/span>();<\/span>\n<\/span><\/span><\/span>            <\/span>fileSecurity<\/span>.<\/span>bindPdf<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrypted.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>            <\/span>fileSecurity<\/span>.<\/span>changePassword<\/span>(<\/span>"OwnerP@ssw0rd"<\/span>,<\/span> <\/span>"Pa$$w0rd1"<\/span>,<\/span> <\/span>"Pa$$w0rd2"<\/span>,<\/span> <\/span>DocumentPrivilege<\/span>.<\/span>getPrint<\/span>(),<\/span>\n<\/span><\/span><\/span>                    <\/span>KeySize<\/span>.<\/span>x256<\/span>);<\/span>\n<\/span><\/span><\/span>            <\/span>fileSecurity<\/span>.<\/span>save<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_encrtypted1.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>}<\/span>\n<\/span><\/span><\/span>    <\/span>}<\/span>\n<\/span><\/span><\/span><\/code><\/pre><\/div>\n      "},{"title":"Java: D\u00e9finir des Privil\u00e8ges sur un Fichier PDF Existant","link":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/set-privileges\/","pubDate":"Sat, 05 Jun 2021 00:00:00 +0000","guid":"https:\/\/docs.aspose.com\/pdf\/fr\/java\/set-privileges\/","description":"\n        \n        \n        
D\u00e9finir des Privil\u00e8ges sur un Fichier PDF Existant (facades)<\/h2>\n
Pour d\u00e9finir les privil\u00e8ges d’un fichier PDF, cr\u00e9ez un objet de classe PdfFileSecurity<\/a> et liez le PDF d’entr\u00e9e \u00e0 l’aide de la m\u00e9thode bindPdf. Ensuite, vous devez appeler la m\u00e9thode setPrivilege pour d\u00e9finir les privil\u00e8ges. Vous pouvez sp\u00e9cifier les privil\u00e8ges en utilisant l’objet DocumentPrivilege<\/a> puis passer cet objet \u00e0 la m\u00e9thode setPrivilege et enregistrer le PDF de sortie en utilisant la m\u00e9thode save.<\/p>\n
Le code suivant vous montre comment d\u00e9finir les privil\u00e8ges d’un fichier PDF.<\/p>\n
public<\/span> <\/span>static<\/span> <\/span>void<\/span> <\/span>SetPrivilege1<\/span>()<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet DocumentPrivileges<\/span>\n<\/span><\/span><\/span>        <\/span>DocumentPrivilege<\/span> <\/span>privilege<\/span> <\/span>=<\/span> <\/span>DocumentPrivilege<\/span>.<\/span>getForbidAll<\/span>();<\/span>\n<\/span><\/span><\/span>        <\/span>privilege<\/span>.<\/span>setChangeAllowLevel<\/span>(<\/span>1<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>privilege<\/span>.<\/span>setAllowPrint<\/span>(<\/span>true<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>privilege<\/span>.<\/span>setAllowCopy<\/span>(<\/span>true<\/span>);<\/span>\n<\/span><\/span><\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet PdfFileSecurity<\/span>\n<\/span><\/span><\/span>        <\/span>PdfFileSecurity<\/span> <\/span>fileSecurity<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileSecurity<\/span>();<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>bindPdf<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>setPrivilege<\/span>(<\/span>privilege<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>save<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_privileges.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>    <\/span>}<\/span>\n<\/span><\/span><\/span><\/code><\/pre><\/div>
Voir la m\u00e9thode suivante avec sp\u00e9cification d’un mot de passe :<\/p>\n
 <\/span>public<\/span> <\/span>static<\/span> <\/span>void<\/span> <\/span>SetPrivilege2<\/span>()<\/span> <\/span>{<\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet DocumentPrivileges<\/span>\n<\/span><\/span><\/span>        <\/span>DocumentPrivilege<\/span> <\/span>privilege<\/span> <\/span>=<\/span> <\/span>DocumentPrivilege<\/span>.<\/span>getForbidAll<\/span>();<\/span>\n<\/span><\/span><\/span>        <\/span>privilege<\/span>.<\/span>setChangeAllowLevel<\/span>(<\/span>1<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>privilege<\/span>.<\/span>setAllowPrint<\/span>(<\/span>true<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>privilege<\/span>.<\/span>setAllowCopy<\/span>(<\/span>true<\/span>);<\/span>\n<\/span><\/span><\/span>\n<\/span><\/span><\/span>        <\/span>\/\/ Cr\u00e9er un objet PdfFileSecurity<\/span>\n<\/span><\/span><\/span>        <\/span>PdfFileSecurity<\/span> <\/span>fileSecurity<\/span> <\/span>=<\/span> <\/span>new<\/span> <\/span>PdfFileSecurity<\/span>();<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>bindPdf<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>setPrivilege<\/span>(<\/span>""<\/span>,<\/span> <\/span>"P@ssw0rd"<\/span>,<\/span> <\/span>privilege<\/span>);<\/span>\n<\/span><\/span><\/span>        <\/span>fileSecurity<\/span>.<\/span>save<\/span>(<\/span>_dataDir<\/span> <\/span>+<\/span> <\/span>"sample_privileges.pdf"<\/span>);<\/span>\n<\/span><\/span><\/span>    <\/span>}<\/span>\n<\/span><\/span><\/span><\/code><\/pre><\/div>\n      "}]}}
La classe PdfFileSecurity<\/a> vous permet de contr\u00f4ler les exceptions. Pour ce faire, vous devez d\u00e9finir setAllowExceptions<\/a> sur false ou true. Si vous d\u00e9finissez l’op\u00e9ration sur false, le r\u00e9sultat de decryptFile<\/a> renverra true ou false selon l’exactitude du mot de passe.<\/p>\n