mirror of
https://github.com/simplex-chat/simplexmq.git
synced 2026-06-07 21:52:35 +00:00
Evgeny @ SimpleX Chat
70 lines
2.8 KiB
Haskell
70 lines
2.8 KiB
Haskell
{-# LANGUAGE DuplicateRecordFields #-}
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{-# LANGUAGE GADTs #-}
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module Simplex.Messaging.Transport.Credentials
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( tlsCredentials,
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Credentials,
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genCredentials,
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C.signCertificate,
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)
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where
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import Control.Concurrent.STM
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import Crypto.Random (ChaChaDRG)
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import Data.ASN1.Types (getObjectID)
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import Data.ASN1.Types.String (ASN1StringEncoding (UTF8))
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import Data.Hourglass (Hours (..), timeAdd)
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import Data.List.NonEmpty (NonEmpty (..))
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import qualified Data.List.NonEmpty as L
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import Data.Text (Text)
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import Data.Text.Encoding (encodeUtf8)
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import qualified Data.X509 as X509
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import Data.X509.Validation (Fingerprint (..), getFingerprint)
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import qualified Network.TLS as TLS
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import qualified Simplex.Messaging.Crypto as C
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import qualified Time.System as Hourglass
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import qualified Time.Types as HT
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tlsCredentials :: NonEmpty Credentials -> (C.KeyHash, TLS.Credential)
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tlsCredentials credentials = (C.KeyHash rootFP, (X509.CertificateChain certs, privateToTls $ snd leafKey))
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where
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Fingerprint rootFP = getFingerprint root X509.HashSHA256
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leafKey = fst $ L.head credentials
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root = snd $ L.last credentials
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certs = map snd $ L.toList credentials
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privateToTls :: C.APrivateSignKey -> TLS.PrivKey
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privateToTls (C.APrivateSignKey _ k) = case k of
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C.PrivateKeyEd25519 pk -> TLS.PrivKeyEd25519 pk
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C.PrivateKeyEd448 pk -> TLS.PrivKeyEd448 pk
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type Credentials = (C.ASignatureKeyPair, X509.SignedCertificate)
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-- spec: spec/modules/Simplex/Messaging/Transport/Credentials.md#gencredentials--nanosecond-stripping
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genCredentials :: TVar ChaChaDRG -> Maybe Credentials -> (Hours, Hours) -> Text -> IO Credentials
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genCredentials g parent (before, after) subjectName = do
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subjectKeys <- atomically $ C.generateSignatureKeyPair C.SEd25519 g
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let (issuerKeys, issuer) = case parent of
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Nothing -> (subjectKeys, subject) -- self-signed
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Just (keys, cert) -> (keys, X509.certSubjectDN . X509.signedObject $ X509.getSigned cert)
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today <- Hourglass.dateCurrent
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-- remove nanoseconds from time - certificate encoding/decoding removes them.
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let today' = today {HT.dtTime = (HT.dtTime today) {HT.todNSec = 0}}
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signed =
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C.signCertificate
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(snd issuerKeys)
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X509.Certificate
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{ certVersion = 2,
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certSerial = 1,
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certSignatureAlg = C.signatureAlgorithmX509 issuerKeys,
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certIssuerDN = issuer,
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certValidity = (timeAdd today' (-before), timeAdd today' after),
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certSubjectDN = subject,
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certPubKey = C.toPubKey C.publicToX509 $ fst subjectKeys,
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certExtensions = X509.Extensions Nothing
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}
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pure (subjectKeys, signed)
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where
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subject = dn $ X509.ASN1CharacterString {characterEncoding = UTF8, getCharacterStringRawData = encodeUtf8 subjectName}
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dn dnCommonName = X509.DistinguishedName [(getObjectID X509.DnCommonName, dnCommonName)]
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