2024-12-10 15:47:37 +01:00
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import pkg/nimcrypto/sha2
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import pkg/nimcrypto/hash
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2024-12-18 10:28:10 +01:00
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import ./basics
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2024-12-10 15:47:37 +01:00
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2024-12-18 10:19:09 +01:00
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export hash.`$`
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2024-12-10 15:47:37 +01:00
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type Hash* = MDigest[256]
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func hash*(_: type Hash, bytes: openArray[byte]): Hash =
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var context: sha256
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context.init()
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context.update(bytes)
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result = context.finish()
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context.clear()
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2024-12-18 10:28:10 +01:00
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func toBytes*(hash: Hash): seq[byte] =
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@(hash.data)
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func fromBytes*(_: type Hash, bytes: openArray[byte]): ?!Hash =
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if bytes.len != 32:
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return failure "expected hash of 32 bytes, but got: " & $bytes.len
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var data: array[32, byte]
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data[0..<32] = bytes[0..<32]
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success Hash(data: data)
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