@obra Thanks for the feedback!
We would be just as sceptical as you of someone rolling out their own crypto.
However, if you look into the details, there are very good reasons why neither PGP nor S/MIME is suitable for us.
It is irresponsible to design crypto software in 2015 that still depends on SHA1. So OpenPGP and S/MIME up to version 3.1 are out.
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