Add cryptographic functions with option to specify custom functions #141

Job	Run time
Check workflows	6s
Build, lint, and test / Prepare	13s
Build, lint, and test / Build	28s
Build, lint, and test / Test (16.x)	2m 58s
Build, lint, and test / Lint	30s
Build, lint, and test / Compatibility test (16.x)	3m 27s
Build, lint, and test / Test (18.x)	3m 8s
Build, lint, and test / Compatibility test (20.x)	3m 3s
Build, lint, and test / Test (20.x)	2m 37s
All jobs completed	1s
All jobs pass	1s
is-release	0s
Publish release	0s
	16m 32s

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