hash:sha256

Hash input using sha256 algorithm

hash:sha256(STRING data) : STRING

hash:sha256("hi")
#=> "150a14ed5bea6cc731cf86c41566ac427a8db48ef1b9fd626664b3bfbb99071fa4c922f33dde38719b8c8354e2b7ab9d77e0e67fc12843920a712e73d558e197"