A combination of clock skew and network latency.
On the Internet, no two people or computers can ever agree on what time something happened, because no two computers ever have precisely the same time (the problem of clock skew), and it takes some small amount of time to even compare clocks (the problem of network latency).
On the Internet, no two people or computers can ever agree on what time something happened, because no two computers ever have precisely the same time (the problem of clock skew), and it takes some small amount of time to even compare clocks (the problem of network latency).
The server wouldn't accept the signature because the signature's time stamp was 5:57pm, the server's local time was 5:59pm, and the allowable skewtency is only 60 seconds.
by arbang June 11, 2016
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