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-- Copyright 2018 Google LLC
--
-- Licensed under the Apache License, Version 2.0 (the "License"); you may not
-- use this file except in compliance with the License. You may obtain a copy of
-- the License at
--
-- https://www.apache.org/licenses/LICENSE-2.0
--
-- Unless required by applicable law or agreed to in writing, software
-- distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
-- WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
-- License for the specific language governing permissions and limitations under
-- the License.
module BTLS.Types where
import Foreign (Ptr)
import BTLS.BoringSSL.Base (EVPMD)
import BTLS.BoringSSL.Digest (evpMDType)
import BTLS.BoringSSL.Obj (objNID2SN)
-- | A cryptographic hash function.
newtype Algorithm = Algorithm (Ptr EVPMD)
instance Eq Algorithm where
Algorithm a == Algorithm b = evpMDType a == evpMDType b
instance Show Algorithm where
show (Algorithm md) = maybe "<algorithm>" id (objNID2SN (evpMDType md))
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