Improve performance of hybrid encrypt CLI #5550

Job	Run time
Basic Checks	19m 22s
Slow tests	16m 50s
Additional Builds and Concurrency Tests	13m 28s
Measure coverage	27m 0s
miri	3m 15s
Release builds and tests	8m 14s
sanitize (address)	17m 33s
sanitize (address, multi-threading)	18m 22s
sanitize (leak)	9m 8s
sanitize (leak, multi-threading)	8m 14s
	2h 21m 26s

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