Adobe Systems Incorporated has released new versions of the Adobe Acrobat product family and Adobe Portable Document Format (PDF). With new capabilities for digital signatures and document control, Acrobat 6.0 software and PDF are designed to allow organizations to build document integration solutions for communicating business information to broad audiences with greater security. Acrobat 6.0 now supports author and recipient signatures to provide additional assurances of an electronic document's origin and integrity. Authors can use the new "Save as Certified Document" option to digitally sign documents sent to broad audiences, such as press releases or analyst reports. Recipients using Acrobat or the free Adobe Reader software can now verify the author's Certified Document signature without any additional security software to confirm that the document did originate from the named party and that it was not tampered with since authoring. With Acrobat 6.0 and the free Adobe Reader, recipients also can apply a digital signature to acknowledge or approve information they have received and/or are supplying back to the author. This is especially useful for electronic forms. With just the free Adobe Reader (and a PDF form with rights enabled by Adobe Document Server for Reader Extensions), recipients can fill in a form online or offline, digitally sign it, and send it back. To support best practices, Certified Documents and recipient signatures can be used together in round trip workflows to establish a complete auditable document trail. Final recipients of a form can verify the authenticity and integrity of the original form and all information supplied in the workflow. Adobe has expanded document control in Acrobat 6.0 to help enterprises manage privacy and intellectual property by protecting the confidentiality of documents and electronic forms. In addition to password protection, Acrobat now supports the ability to encrypt a document using Public Key Infrastructure (PKI) and the Lightweight Directory Access Protocol (LDAP). These new encryption capabilities enable authors to simply type in recipients' names or email addresses and automatically encrypt documents to recipients inside and outside their organization. To have greater control over document access, modification, and printing, authors also can apply different permissions within a single document for each intended recipient.