mirror of
https://github.com/pgpainless/pgpainless.git
synced 2024-12-25 04:17:59 +01:00
Refactor WebOfTrust class
This commit is contained in:
parent
31a0151b55
commit
2e802c1f1e
5 changed files with 193 additions and 267 deletions
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@ -18,7 +18,6 @@ import org.pgpainless.signature.SignatureUtils
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import org.pgpainless.signature.consumer.SignatureVerifier
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import org.pgpainless.signature.subpackets.SignatureSubpacketsUtil
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import org.pgpainless.wot.dijkstra.sq.*
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import org.pgpainless.wot.dijkstra.sq.CertificationSet.Companion.fromCertification
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import org.pgpainless.wot.dijkstra.sq.ReferenceTime.Companion.now
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import org.pgpainless.wot.util.CertificationFactory.Companion.fromCertification
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import org.pgpainless.wot.util.CertificationFactory.Companion.fromDelegation
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@ -46,11 +45,10 @@ class WebOfTrust(private val certificateStore: PGPCertificateStore) {
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*/
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constructor(certificateDirectory: PGPCertificateDirectory): this(PGPCertificateStoreAdapter(certificateDirectory))
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lateinit var network: Network
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fun initialize() {
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fun buildNetwork(policy: Policy = PGPainless.getPolicy(), referenceTime: ReferenceTime = now()): Network {
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val certificates = getAllCertificatesFromTheStore()
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network = fromCertificates(certificates, PGPainless.getPolicy(), now())
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val networkFactory = PGPNetworkFactory.fromCertificates(certificates, policy, referenceTime)
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return networkFactory.buildNetwork()
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}
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private fun getAllCertificatesFromTheStore(): Sequence<Certificate> {
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@ -69,47 +67,181 @@ class WebOfTrust(private val certificateStore: PGPCertificateStore) {
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return certificates
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}
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companion object {
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@JvmStatic
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fun fromCertificates(certificates: Sequence<Certificate>,
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policy: Policy,
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referenceTime: ReferenceTime): Network {
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return fromValidCertificates(
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parseValidCertificates(certificates, policy, referenceTime),
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policy,
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referenceTime
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)
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}
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/**
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* Class for building the [Flow network][Network] from the given set of OpenPGP keys.
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*/
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private class PGPNetworkFactory private constructor(validatedCertificates: List<KeyRingInfo>,
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private val policy: Policy,
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private val referenceTime: ReferenceTime) {
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@JvmStatic
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fun fromValidCertificates(certificates: List<KeyRingInfo>,
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policy: Policy,
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referenceTime: ReferenceTime): Network {
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val nb = NetworkBuilder(certificates, policy, referenceTime)
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return nb.buildNetwork()
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}
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companion object {
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@JvmStatic
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private val LOGGER = LoggerFactory.getLogger(PGPNetworkFactory::class.java)
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@JvmStatic
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private fun parseValidCertificates(certificates: Sequence<Certificate>,
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policy: Policy,
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referenceTime: ReferenceTime): List<KeyRingInfo> {
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return certificates
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.mapNotNull { cert ->
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try {
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PGPainless.readKeyRing().publicKeyRing(cert.inputStream)
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} catch (e: IOException) {
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null
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@JvmStatic
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fun fromCertificates(certificates: Sequence<Certificate>,
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policy: Policy,
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referenceTime: ReferenceTime): PGPNetworkFactory {
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return fromValidCertificates(
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parseValidCertificates(certificates, policy, referenceTime),
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policy,
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referenceTime
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)
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}
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@JvmStatic
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fun fromValidCertificates(certificates: List<KeyRingInfo>,
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policy: Policy,
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referenceTime: ReferenceTime): PGPNetworkFactory {
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return PGPNetworkFactory(certificates, policy, referenceTime)
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}
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@JvmStatic
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private fun parseValidCertificates(certificates: Sequence<Certificate>,
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policy: Policy,
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referenceTime: ReferenceTime): List<KeyRingInfo> {
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return certificates
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.mapNotNull {
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try { PGPainless.readKeyRing().publicKeyRing(it.inputStream) } catch (e: IOException) { null }
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}
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}
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.map { cert ->
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KeyRingInfo(cert, policy, referenceTime.timestamp)
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}
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.toList()
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.map { KeyRingInfo(it, policy, referenceTime.timestamp) }
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.toList()
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}
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}
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// Map signature to its revocation state
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@JvmStatic
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private fun revocationStateFromSignature(revocation: PGPSignature?): RevocationState {
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private val networkBuilder: Network.Builder = Network.builder()
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// certificates keyed by fingerprint
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private val byFingerprint: MutableMap<Fingerprint, KeyRingInfo> = HashMap()
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// certificates keyed by (sub-) key-id
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private val byKeyId: MutableMap<Long, MutableList<KeyRingInfo>> = HashMap()
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// certificate synopses keyed by fingerprint
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private val certSynopsisMap: MutableMap<Fingerprint, CertSynopsis> = HashMap()
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init {
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validatedCertificates.forEach { indexAsNode(it) }
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validatedCertificates.forEach { findEdgesWithTarget(it) }
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}
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private fun indexAsNode(cert: KeyRingInfo) {
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// index by fingerprint
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val certFingerprint = Fingerprint(cert.fingerprint)
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if (!byFingerprint.containsKey(certFingerprint)) {
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byFingerprint[certFingerprint] = cert
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}
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// index by key-ID
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var certsWithKey = byKeyId[cert.keyId]
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// noinspection Java8MapApi
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if (certsWithKey == null) {
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certsWithKey = mutableListOf()
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// TODO: Something is fishy here...
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for (key in cert.validSubkeys) {
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byKeyId[key.keyID] = certsWithKey
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}
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}
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certsWithKey.add(cert)
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val userIds: MutableMap<String, RevocationState> = HashMap()
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for (userId in cert.userIds) {
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val state = RevocationState(cert.getUserIdRevocation(userId))
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userIds[userId] = state
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}
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// index synopses
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val expirationDate: Date? = try {
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cert.getExpirationDateForUse(KeyFlag.CERTIFY_OTHER)
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} catch (e: NoSuchElementException) {
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// Some keys are malformed and have no KeyFlags
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return
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}
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val node = CertSynopsis(certFingerprint,
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expirationDate,
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RevocationState(cert.revocationSelfSignature),
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userIds)
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certSynopsisMap[certFingerprint] = node
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networkBuilder.addNode(node)
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}
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private fun findEdgesWithTarget(validatedTarget: KeyRingInfo) {
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val validatedTargetKeyRing = KeyRingUtils.publicKeys(validatedTarget.keys)
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val targetFingerprint = Fingerprint(OpenPgpFingerprint.of(validatedTargetKeyRing))
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val targetPrimaryKey = validatedTargetKeyRing.publicKey!!
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val target = certSynopsisMap[targetFingerprint]!!
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// Direct-Key Signatures (delegations) by X on Y
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val delegations = SignatureUtils.getDelegations(validatedTargetKeyRing)
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for (delegation in delegations) {
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processDelegation(targetPrimaryKey, target, delegation)
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}
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// Certification Signatures by X on Y over user-ID U
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val userIds = targetPrimaryKey.userIDs
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while (userIds.hasNext()) {
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val userId = userIds.next()
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val userIdSigs = SignatureUtils.get3rdPartyCertificationsFor(userId, validatedTargetKeyRing)
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userIdSigs.forEach {
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processCertificationOnUserId(targetPrimaryKey, target, userId, it)
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}
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}
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}
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private fun processDelegation(targetPrimaryKey: PGPPublicKey,
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target: CertSynopsis,
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delegation: PGPSignature) {
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val issuerCandidates = byKeyId[delegation.keyID]
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?: return
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for (candidate in issuerCandidates) {
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val issuerKeyRing = KeyRingUtils.publicKeys(candidate.keys)
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val issuerFingerprint = Fingerprint(OpenPgpFingerprint.of(issuerKeyRing))
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val issuerSigningKey = issuerKeyRing.getPublicKey(delegation.keyID)
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val issuer = certSynopsisMap[issuerFingerprint]
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?: continue
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try {
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val valid = SignatureVerifier.verifyDirectKeySignature(delegation, issuerSigningKey,
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targetPrimaryKey, policy, referenceTime.timestamp)
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if (valid) {
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networkBuilder.addEdge(fromDelegation(issuer, target, delegation))
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}
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} catch (e: SignatureValidationException) {
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val targetFingerprint = OpenPgpFingerprint.of(targetPrimaryKey)
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LOGGER.warn("Cannot verify signature by $issuerFingerprint on cert of $targetFingerprint", e)
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}
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}
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}
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private fun processCertificationOnUserId(targetPrimaryKey: PGPPublicKey,
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target: CertSynopsis,
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userId: String,
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certification: PGPSignature) {
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val issuerCandidates = byKeyId[certification.keyID]
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?: return
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for (candidate in issuerCandidates) {
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val issuerKeyRing = KeyRingUtils.publicKeys(candidate.keys)
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val issuerFingerprint = Fingerprint(OpenPgpFingerprint.of(issuerKeyRing))
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val issuerSigningKey = issuerKeyRing.getPublicKey(certification.keyID)
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?: continue
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val issuer = certSynopsisMap[issuerFingerprint]
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?: continue
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try {
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val valid = SignatureVerifier.verifySignatureOverUserId(userId, certification,
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issuerSigningKey, targetPrimaryKey, policy, referenceTime.timestamp)
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if (valid) {
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networkBuilder.addEdge(fromCertification(issuer, target, userId, certification))
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}
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} catch (e: SignatureValidationException) {
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LOGGER.warn("Cannot verify signature for '$userId' by $issuerFingerprint" +
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" on cert of ${target.fingerprint}", e)
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}
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}
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}
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private fun Fingerprint(fingerprint: OpenPgpFingerprint) = Fingerprint(fingerprint.toString())
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private fun RevocationState(revocation: PGPSignature?): RevocationState {
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if (revocation == null) {
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return RevocationState.notRevoked()
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}
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@ -121,209 +253,13 @@ class WebOfTrust(private val certificateStore: PGPCertificateStore) {
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RevocationState.softRevoked(revocation.creationTime)
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}
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@JvmStatic
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private fun OpenPgpFingerprint.map(): Fingerprint {
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return Fingerprint(toString())
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}
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/**
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* Class for building the [Flow network][Network] from the given set of OpenPGP keys.
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* Return the constructed, initialized [Network].
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*
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* @return finished network
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*/
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private class NetworkBuilder constructor(validatedCertificates: List<KeyRingInfo>,
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private val policy: Policy,
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private val referenceTime: ReferenceTime) {
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companion object {
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@JvmStatic
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private val LOGGER = LoggerFactory.getLogger(NetworkBuilder::class.java)
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}
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// certificates keyed by fingerprint
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private val byFingerprint: MutableMap<Fingerprint, KeyRingInfo> = HashMap()
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// certificates keyed by (sub-) key-id
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private val byKeyId: MutableMap<Long, MutableList<KeyRingInfo>> = HashMap()
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// certificate synopses keyed by fingerprint
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private val certSynopsisMap: MutableMap<Fingerprint, CertSynopsis> = HashMap()
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// Issuer -> Targets, edges keyed by issuer
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private val edges: MutableMap<Fingerprint, MutableList<CertificationSet>> = HashMap()
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// Target -> Issuers, edges keyed by target
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private val reverseEdges: MutableMap<Fingerprint, MutableList<CertificationSet>> = HashMap()
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init {
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synopsizeCertificates(validatedCertificates)
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findEdges(validatedCertificates)
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}
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private fun synopsizeCertificates(validatedCertificates: List<KeyRingInfo>) {
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for (cert in validatedCertificates) {
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synopsize(cert)
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}
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}
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private fun synopsize(cert: KeyRingInfo) {
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// index by fingerprint
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val certFingerprint = cert.fingerprint.map()
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if (!byFingerprint.containsKey(certFingerprint)) {
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byFingerprint[certFingerprint] = cert
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}
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// index by key-ID
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var certsWithKey = byKeyId[cert.keyId]
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// noinspection Java8MapApi
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if (certsWithKey == null) {
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certsWithKey = mutableListOf()
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// TODO: Something is fishy here...
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for (key in cert.validSubkeys) {
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byKeyId[key.keyID] = certsWithKey
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}
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}
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certsWithKey.add(cert)
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val userIds: MutableMap<String, RevocationState> = HashMap()
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for (userId in cert.userIds) {
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val state: RevocationState = revocationStateFromSignature(cert.getUserIdRevocation(userId))
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userIds[userId] = state
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}
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// index synopses
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val expirationDate: Date? = try {
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cert.getExpirationDateForUse(KeyFlag.CERTIFY_OTHER)
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} catch (e: NoSuchElementException) {
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// Some keys are malformed and have no KeyFlags
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return
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}
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certSynopsisMap[certFingerprint] = CertSynopsis(certFingerprint,
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expirationDate,
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revocationStateFromSignature(cert.revocationSelfSignature),
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userIds)
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}
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private fun findEdges(validatedCertificates: List<KeyRingInfo>) {
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// Identify certifications and delegations
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// Target = cert carrying a signature
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for (validatedTarget in validatedCertificates) {
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findEdgesWithTarget(validatedTarget)
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}
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}
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private fun findEdgesWithTarget(validatedTarget: KeyRingInfo) {
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val validatedTargetKeyRing = KeyRingUtils.publicKeys(validatedTarget.keys)
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val targetFingerprint = OpenPgpFingerprint.of(validatedTargetKeyRing).map()
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val targetPrimaryKey = validatedTargetKeyRing.publicKey!!
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val target = certSynopsisMap[targetFingerprint]!!
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// Direct-Key Signatures (delegations) by X on Y
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val delegations = SignatureUtils.getDelegations(validatedTargetKeyRing)
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for (delegation in delegations) {
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processDelegation(targetPrimaryKey, target, delegation)
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}
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// Certification Signatures by X on Y over user-ID U
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val userIds = targetPrimaryKey.userIDs
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while (userIds.hasNext()) {
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val userId = userIds.next()
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val userIdSigs = SignatureUtils.get3rdPartyCertificationsFor(userId, validatedTargetKeyRing)
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processCertification(targetPrimaryKey, target, userId, userIdSigs)
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}
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}
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private fun processDelegation(targetPrimaryKey: PGPPublicKey,
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target: CertSynopsis,
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delegation: PGPSignature) {
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val issuerCandidates = byKeyId[delegation.keyID]
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?: return
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for (candidate in issuerCandidates) {
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val issuerKeyRing = KeyRingUtils.publicKeys(candidate.keys)
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val issuerFingerprint = OpenPgpFingerprint.of(issuerKeyRing).map()
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val issuerSigningKey = issuerKeyRing.getPublicKey(delegation.keyID)
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val issuer = certSynopsisMap[issuerFingerprint]
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?: continue
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try {
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val valid = SignatureVerifier.verifyDirectKeySignature(delegation, issuerSigningKey,
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targetPrimaryKey, policy, referenceTime.timestamp)
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if (valid) {
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indexEdge(fromDelegation(issuer, target, delegation))
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}
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} catch (e: SignatureValidationException) {
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val targetFingerprint = OpenPgpFingerprint.of(targetPrimaryKey)
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LOGGER.warn("Cannot verify signature by $issuerFingerprint on cert of $targetFingerprint", e)
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}
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}
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}
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private fun processCertification(targetPrimaryKey: PGPPublicKey,
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target: CertSynopsis,
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userId: String,
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userIdSigs: List<PGPSignature>) {
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for (certification in userIdSigs) {
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val issuerCandidates = byKeyId[certification.keyID]
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?: continue
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for (candidate in issuerCandidates) {
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val issuerKeyRing = KeyRingUtils.publicKeys(candidate.keys)
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val issuerFingerprint = OpenPgpFingerprint.of(issuerKeyRing).map()
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val issuerSigningKey = issuerKeyRing.getPublicKey(certification.keyID)
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?: continue
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val issuer = certSynopsisMap[issuerFingerprint]
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?: continue
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try {
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val valid = SignatureVerifier.verifySignatureOverUserId(userId, certification,
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issuerSigningKey, targetPrimaryKey, policy, referenceTime.timestamp)
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if (valid) {
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indexEdge(fromCertification(issuer, target, userId, certification))
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}
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} catch (e: SignatureValidationException) {
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LOGGER.warn("Cannot verify signature for '$userId' by $issuerFingerprint" +
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" on cert of ${target.fingerprint}", e)
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}
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}
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}
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}
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private fun indexEdge(certification: Certification) {
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// Index edge as outgoing edge for issuer
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val issuer = certification.issuer.fingerprint
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edges.getOrPut(issuer) { mutableListOf() }.also { indexOutEdge(it, certification) }
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// Index edge as incoming edge for target
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val target = certification.target.fingerprint
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reverseEdges.getOrPut(target) { mutableListOf() }.also { indexInEdge(it, certification) }
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}
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private fun indexOutEdge(outEdges: MutableList<CertificationSet>, certification: Certification) {
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val target = certification.target.fingerprint
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for (outEdge in outEdges) {
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if (target == outEdge.target.fingerprint) {
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outEdge.add(certification)
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return
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}
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}
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outEdges.add(fromCertification(certification))
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}
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private fun indexInEdge(inEdges: MutableList<CertificationSet>, certification: Certification) {
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val issuer = certification.issuer.fingerprint
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for (inEdge in inEdges) {
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if (issuer == inEdge.issuer.fingerprint) {
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inEdge.add(certification)
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return
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}
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}
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inEdges.add(fromCertification(certification))
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}
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/**
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* Return the constructed, initialized [Network].
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*
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* @return finished network
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*/
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fun buildNetwork(): Network {
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return Network(certSynopsisMap, edges, reverseEdges, referenceTime)
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}
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fun buildNetwork(): Network {
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return networkBuilder.build()
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}
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}
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}
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|
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@ -8,7 +8,6 @@ class AdHocTest {
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@Test
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fun test() {
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||||
val store = AdHocVectors.BestViaRoot().pgpCertificateStore
|
||||
val wot = WebOfTrust(store).also { it.initialize() }
|
||||
val network = wot.network
|
||||
val network = WebOfTrust(store).buildNetwork()
|
||||
}
|
||||
}
|
|
@ -33,9 +33,7 @@ class WebOfTrustTest {
|
|||
@Test
|
||||
fun testWithTwoNodesAndOneDelegation() {
|
||||
val certD = TestCertificateStores.oneDelegationGraph()
|
||||
val wot = WebOfTrust(certD)
|
||||
wot.initialize()
|
||||
val network = wot.network
|
||||
val network = WebOfTrust(certD).buildNetwork()
|
||||
|
||||
assertEquals(2, network.nodes.size)
|
||||
assertHasEdge(network, fooBankAdmin, barBankCa)
|
||||
|
@ -48,9 +46,7 @@ class WebOfTrustTest {
|
|||
@Test
|
||||
fun testWithCrossSignedCertificates() {
|
||||
val certD = TestCertificateStores.disconnectedGraph()
|
||||
val wot = WebOfTrust(certD)
|
||||
wot.initialize()
|
||||
val network = wot.network
|
||||
val network = WebOfTrust(certD).buildNetwork()
|
||||
|
||||
assertEquals(5, network.nodes.size)
|
||||
assertTrue {
|
||||
|
@ -81,9 +77,7 @@ class WebOfTrustTest {
|
|||
@Test
|
||||
fun testWotCreationOfEmptyCertificates() {
|
||||
val certD = TestCertificateStores.emptyGraph()
|
||||
val wot = WebOfTrust(certD)
|
||||
wot.initialize()
|
||||
val network = wot.network
|
||||
val network = WebOfTrust(certD).buildNetwork()
|
||||
|
||||
assertTrue { network.nodes.isEmpty() }
|
||||
assertTrue { network.edges.isEmpty() }
|
||||
|
@ -93,9 +87,7 @@ class WebOfTrustTest {
|
|||
@Test
|
||||
fun testWotWithAnomaly() {
|
||||
val store = TestCertificateStores.anomalyGraph()
|
||||
val wot = WebOfTrust(store)
|
||||
wot.initialize()
|
||||
val network = wot.network
|
||||
val network = WebOfTrust(store).buildNetwork()
|
||||
|
||||
assertEquals(1, network.nodes.size)
|
||||
}
|
||||
|
|
|
@ -9,14 +9,13 @@ import org.junit.jupiter.api.assertThrows
|
|||
import org.pgpainless.wot.dijkstra.sq.*
|
||||
import java.util.*
|
||||
import kotlin.test.assertEquals
|
||||
import kotlin.test.assertFalse
|
||||
import kotlin.test.assertTrue
|
||||
|
||||
class CertificationSetTest {
|
||||
|
||||
private val alice = CertSynopsis(Fingerprint("0000000000000000000000000000000000000000"), null, RevocationState.notRevoked(), mapOf())
|
||||
private val bob = CertSynopsis(Fingerprint("1111111111111111111111111111111111111111"), null, RevocationState.notRevoked(), mapOf())
|
||||
private val charlie = CertSynopsis(Fingerprint("2222222222222222222222222222222222222222"), null, RevocationState.notRevoked(), mapOf())
|
||||
private val alice = CertSynopsis(Fingerprint("A"), null, RevocationState.notRevoked(), mapOf())
|
||||
private val bob = CertSynopsis(Fingerprint("B"), null, RevocationState.notRevoked(), mapOf())
|
||||
private val charlie = CertSynopsis(Fingerprint("C"), null, RevocationState.notRevoked(), mapOf())
|
||||
|
||||
private val aliceSignsBob = Certification(alice, null, bob, Date())
|
||||
private val aliceSignsBobUserId = Certification(alice, "Bob <bob@example.org>", bob, Date())
|
||||
|
@ -105,8 +104,8 @@ class CertificationSetTest {
|
|||
val twoCerts = CertificationSet.fromCertification(aliceSignsBob)
|
||||
twoCerts.add(aliceSignsBobUserId)
|
||||
|
||||
assertEquals("0000000000000000000000000000000000000000 delegates to 1111111111111111111111111111111111111111\n" +
|
||||
"0000000000000000000000000000000000000000 certifies [Bob <bob@example.org>] 1111111111111111111111111111111111111111", twoCerts.toString())
|
||||
assertEquals("A certifies binding: null <-> B [120]\n" +
|
||||
"A certifies binding: Bob <bob@example.org> <-> B [120]", twoCerts.toString())
|
||||
}
|
||||
|
||||
@Test
|
||||
|
|
|
@ -11,17 +11,17 @@ import kotlin.test.assertEquals
|
|||
class CertificationTest {
|
||||
|
||||
private val alice = CertSynopsis(
|
||||
Fingerprint("0000000000000000000000000000000000000000"),
|
||||
Fingerprint("A"),
|
||||
null,
|
||||
RevocationState.notRevoked(),
|
||||
mapOf(Pair("Alice <alice@pgpainless.org>", RevocationState.notRevoked())))
|
||||
private val bob = CertSynopsis(
|
||||
Fingerprint("1111111111111111111111111111111111111111"),
|
||||
Fingerprint("B"),
|
||||
null,
|
||||
RevocationState.notRevoked(),
|
||||
mapOf(Pair("Bob <bob@example.org>", RevocationState.notRevoked())))
|
||||
private val charlie = CertSynopsis(
|
||||
Fingerprint("22222222222222222222222222222222222222222222"),
|
||||
Fingerprint("C"),
|
||||
null,
|
||||
RevocationState.notRevoked(),
|
||||
mapOf())
|
||||
|
@ -29,21 +29,21 @@ class CertificationTest {
|
|||
@Test
|
||||
fun `verify result of toString() on certification`() {
|
||||
val certification = Certification(alice, "Bob <bob@example.org>", bob, Date())
|
||||
assertEquals("0000000000000000000000000000000000000000 (Alice <alice@pgpainless.org>) certifies [Bob <bob@example.org>] 1111111111111111111111111111111111111111",
|
||||
assertEquals("A certifies binding: Bob <bob@example.org> <-> B [120]",
|
||||
certification.toString())
|
||||
}
|
||||
|
||||
@Test
|
||||
fun `verify result of toString() on delegation`() {
|
||||
val delegation = Certification(alice, null, bob, Date())
|
||||
assertEquals("0000000000000000000000000000000000000000 (Alice <alice@pgpainless.org>) delegates to 1111111111111111111111111111111111111111",
|
||||
assertEquals("A certifies binding: null <-> B [120]",
|
||||
delegation.toString())
|
||||
}
|
||||
|
||||
@Test
|
||||
fun `verify result of toString() on delegation with userId-less issuer`() {
|
||||
val delegation = Certification(charlie, null, bob, Date())
|
||||
assertEquals("22222222222222222222222222222222222222222222 delegates to 1111111111111111111111111111111111111111",
|
||||
assertEquals("C certifies binding: null <-> B [120]",
|
||||
delegation.toString())
|
||||
}
|
||||
}
|
Loading…
Reference in a new issue