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Red V symbol (log file not valid) after OLC upload.
On Nov 24, 3:00*am, Max Kellermann wrote:
If they had a different private key, then VALI.exe would need to include all public keys of all loggers sold. *And you would have to update the VALI.exe each time the vendor generates new keys for new loggers he will sell, and each time somebody wants to have his logger repaired. *Then think about what happens when a pilot sends a logger for repair, how will inserting a new key into the logger work? *How will the existing VALI.exe on the OLC server get to know about this? While that would be technically possibly, and it would be possible to pregenerate thousands of keys in advance, I do not think any logger vendor has done this. Do you think they did? The vendors of IGC approved flight recorders are required to do this, as spelled out in the specification, which can be obtained here (unfortunately, the FAI web site is a bit wonky, right now): http://www.fai.org/igc-documents All flight recorders currently approved for "all flights" or "all badges and diplomas" have unique public/private key pairs for each unit. I, as a member of the IGC GNSS Flight Recorder Approval Committee, would like to see the algorithms standardized and the public keys openly distributed, but life is always a bit more complicated than it might seem... Marc |
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