nim-abc/abc/hash.nim

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import std/hashes except Hash
import pkg/nimcrypto
type
Hash* = distinct MDigest[256]
func `==`*(a, b: Hash): bool {.borrow.}
func hash*(bytes: openArray[byte]): Hash =
Hash(sha256.digest(bytes))
func toBytes*(hash: Hash): array[32, byte] =
MDigest[256](hash).data
func hash*(hash: Hash): hashes.Hash =
hashes.hash(hash.toBytes)