Author names have a "file-as" attribute that should be set to "Last-name, First-name".
Regarding DRM'd files, I believe those have each file in the zip encrypted separately, that means you can probably extract the (encrypted) files as with any other epub. With some luck, only the book contents will be encrypted and not the OPF file (metadata). If this is the case, you can edit the metadata and re-zip the file.
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