https://en.wikipedia.org/wiki/Key_escrow https://en.wikipedia.org/wiki/Key_escrow https://en.wikipedia.org/wiki/Secret_sharing https://en.wikipedia.org/wiki/Sec

https://en.wikipedia.org/wiki/Key_escrow https://en.wikipedia.org/wiki/Key_escrow https://en.wikipedia.org/wiki/Secret_sharing https://en.wikipedia.org/wiki/Secret_sharing It's a terrible idea. The only proposed methods with theoretically possible security would suffer insurmountable side channel issues. Edit: more https://dspace.mit.edu/bitstream/handle/1721.1/97690/MIT-CSAIL-TR-2015-026.pdf https://dspace.mit.edu/bitstream/handle/1721.1/97690/MIT-CSA...