1	import Base
2	import ./hub_sha/sha256.bend as SHA
3	
4	# Single checksum for SSTable v2 framing. SHA-256 is vendored under
5	# ./hub_sha (see its headers); our laws only cover framing (digest placed
6	# after '#', verified on parse), and vectors below pin the primitive.
7	def digest(+body: String) -> String:
8	  SHA.hex(SHA.sha256(SHA.ascii(body)))
9	
10	def verify(+body: String, +claimed: String) -> Bool:
11	  String.eq(digest(body), claimed)