The server provides a tool, validate-file-signature, that checks if a file has not been tampered with in any way.
For this example, assume that the
sign-log property was enabled
for the File-Based Audit Log Publisher.
$ bin/validate-file-signature --file logs/audit
All signature information in file 'logs/audit' is valid
If any validations errors occur, you will see a message similar to the one as follows.
One or more signature validation errors were encountered while validating the contents of file 'logs/audit': * The end of the input stream was encountered without encountering the end of an active signature block. The contents of this signed block cannot be trusted because the signature cannot be verified