Adobe LiveCycle Reader Extensions

The Adobe LiveCycle Reader Extensions ES (former name: Adobe Reader Extension Server ) is a product of Adobe Systems, Reader can be unlocked with the specific functionalities of Adobe. By default, allows Adobe Reader only the viewing and printing of PDF documents. Other functions such as inserting comments, storing and sending completed forms and the generation of digital signatures in Reader available, but can only be used in documents that were specifically for this unlocked.

ES stands for Enterprise Suite

Upon activating a data structure is inserted into the document, the flags for the active functions and an RSA signature over parts of the document contains. 2003 were identified by Elcomsoft gaps in this process, allowing the activation of Reader Extensions without a Reader Extension Server license.