Example usage for org.apache.pdfbox.pdmodel.encryption StandardProtectionPolicy setPermissions

Introduction

In this page you can find the example usage for org.apache.pdfbox.pdmodel.encryption StandardProtectionPolicy setPermissions.

Prototype

public void setPermissions(AccessPermission permissions) 

Source Link

Document

Sets the access permissions

Usage

From source file:org.nuxeo.pdf.PDFEncryption.java

License:Apache License

/**
 * Encrypts the pdf with the new permissions (see {@link AccessPermission})
 * <p>/*from   w w  w.  ja  v a 2s .c om*/
 * <b>IMPORTANT
 * </p>
 * : It is required that the following setters are called <i>before</i>
 * <ul>
 * <li>{@link setOriginalOwnerPwd}: Only if the original pdf already is encrypted. This password allows to open it
 * for modification</li>
 * <li>{@link setKeyLength}: To set the length of the key</li>
 * <li>{@link setOwnerPwd}: The password for the owner. If not called, <code>originalOwnerPwd</code> is used instead
 * </li>
 * <li>{@link setUserPwd}: The password for the user.</li>
 * </ul>
 * 
 * @param inPerm
 * @return a copy of the blob with the new permissions set.
 * @since 8.1
 */
public Blob encrypt(AccessPermission inPerm) {

    Blob result = null;

    if (keyLength < 1) {
        keyLength = DEFAULT_KEYLENGTH;
    } else {
        if (!ALLOWED_LENGTH.contains(keyLength)) {
            throw new NuxeoException(
                    "Cannot use " + keyLength + " is not allowed as lenght for the encrytion key");
        }
    }

    if (StringUtils.isBlank(ownerPwd)) {
        ownerPwd = originalOwnerPwd;
    }

    try {
        loadPdf();

        StandardProtectionPolicy spp = new StandardProtectionPolicy(ownerPwd, userPwd, inPerm);
        spp.setEncryptionKeyLength(keyLength);
        spp.setPermissions(inPerm);

        pdfDoc.protect(spp);

        result = PDFUtils.saveInTempFile(pdfDoc, pdfBlob.getFilename());

    } catch (Exception e) {
        throw new NuxeoException("Failed to encrypt the PDF", e);
    } finally {
        PDFUtils.closeSilently(pdfDoc);
        pdfDoc = null;
    }

    return result;

}

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