Bug check signature and service public key#112

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IgorNoskov wants to merge 2 commits intoBeSimple:0.2from

IgorNoskov:bug_check-signature-and-service-public-key

Commits on Nov 22, 2019

Check a service security key before receiving a public key
IgorNoskov
committed
Check whether a signature exists before verification
IgorNoskov
committed