Add error check to decipher#81

Merged

kkc merged 5 commits intokkdai:masterfrom

Julian-Chu:add-error-check-to-decipher

Jul 21, 2020

Commits on Jul 19, 2020

add error check
Julian-Chu
committed

Commits on Jul 20, 2020

Commits on Jul 21, 2020

fix decipher
Julian-Chu
committed