Hi!
Implementations SHOULD be prepared to handle values up to at least
10^12 (until approximately AD 200,000; this fits into 40 bits).
Do we really think DKIM2 will be still in use by then? I'm asking
because our internal Time datatype supports just _a bit_ less than that.
I can understand wanting to require avoiding y2k38 issues, but we want
Time to be a) only one integer, b) not more than signed 64 bit (largest
safely supported primitive type), c) keep to our 0.1us precision. Our
constraints put our support a _bit_ lower than 10^12 seconds.
I'd suggest making the requirement quite a bit lower (say, at least now
+ 200 years, perhaps suggesting that signed 64 bits are enough even if
nanosecond precision is used for a generic Time type, which would still
support a bit over 200 years from now). If DKIM2 should really survive
more than 200 years, this support requirement could still be revised.
Hannah.
--
Hannah Stern
Software Developer
Mail Transfer Development
1&1 Mail & Media Development & Technology GmbH | | |
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Verena Patzelt
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