Add cryptographic functions with option to specify custom functions #131

Job	Run time
Check workflows	4s
Build, lint, and test / Prepare	12s
Build, lint, and test / Build	28s
Build, lint, and test / Test (16.x)	1m 50s
Build, lint, and test / Compatibility test (16.x)	2m 19s
Build, lint, and test / Lint	25s
Build, lint, and test / Test (18.x)	1m 55s
Build, lint, and test / Compatibility test (20.x)	1m 54s
Build, lint, and test / Test (20.x)	1m 24s
All jobs completed	0s
All jobs pass	1s
is-release	0s
Publish release	0s
	10m 32s

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