Overview The XML Data Integrity Checksum (XDIC) project provides a standard and reference implementation for embedding checksums in XML files. This approach is designed to ensure the integrity of XML data without altering its schema or content structure. XDIC uses cryptographic hash functions to generate checksums, which are then embedded within the XML files using Processing Instructions (PI). Purpose The primary goal of XDIC is to provide a reliable method for verifying the integrity of XML data across different systems and platforms. This is particularly useful in environments where XML data is exchanged or stored over extended periods, and where maintaining its originality and integrity is crucial.