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- # bug #14136
- type
- MDigest*[bits: static[int]] = object
- ## Message digest type
- data*: array[bits div 8, byte]
- Sha2Context*[bits: static[int],
- bsize: static[int],
- T: uint32|uint64] = object
- count: array[2, T]
- state: array[8, T]
- buffer: array[bsize, byte]
- sha256* = Sha2Context[256, 64, uint32]
- template hmacSizeBlock*(h: typedesc): int =
- when (h is Sha2Context):
- int(h.bsize)
- else:
- {.fatal: "Choosen hash primitive is not yet supported!".}
- type
- HMAC*[HashType] = object
- ## HMAC context object.
- mdctx: HashType
- opadctx: HashType
- ipad: array[HashType.hmacSizeBlock, byte]
- opad: array[HashType.hmacSizeBlock, byte]
- func hkdfExtract*[T;S,I: char|byte](ctx: var HMAC[T],
- prk: var MDigest[T.bits], # <------- error here "Error: type expected"
- salt: openArray[S],
- ikm: openArray[I]
- ) =
- discard
- var ctx: HMAC[sha256]
- var prk: MDigest[sha256.bits]
- let salt = [byte 0x00, 0x01, 0x02]
- let ikm = "CompletelyRandomInput"
- ctx.hkdfExtract(prk, salt, ikm)
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