extract keys from and decrypt contents of eOneBook SD cards https://src.kaivo.net/hw/deonebook/atom/.gitmodules?h=deonebook 2020-11-19T00:49:49Z 2020-11-19T00:49:49Z Jakob Kaivo jkk@ung.org 2020-11-19T00:49:49Z urn:sha1:fba801355bd8c4d7d57dadfa29362809a5a87b7f adjust command-line to require no file names or exactly two, input and output remove -G and -R options specify device with -d option specify key (in hex) if necessary with -k option better warnings and errors throughout