Add sdJwt presentation #4
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,93 @@ | ||
| package eu.europa.ec.eudi.wallet.issue.openid4vci | ||
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| import android.content.Context | ||
| import eu.europa.ec.eudi.wallet.document.DocumentId | ||
| import eu.europa.ec.eudi.wallet.util.getEncryptedSharedPreferences | ||
| import org.json.JSONException | ||
| import org.json.JSONObject | ||
| import java.util.Base64 | ||
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| object DocumentManagerSdJwt { | ||
| private lateinit var dataStore: SdJwtDocumentDataStore | ||
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| fun init(context: Context, requiresUserAuth: Boolean) { | ||
| dataStore = SdJwtDocumentDataStore(context, requiresUserAuth) | ||
| } | ||
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| fun storeDocument(id: String, credentials: String) { | ||
| dataStore.add(id, credentials) | ||
| } | ||
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| fun getDocumentById(id: String) = dataStore.get(id) | ||
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| fun getAllDocuments() = dataStore.getAll() | ||
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| fun deleteDocument(documentId: DocumentId) { | ||
| // quick but very dirty solution (we decided to only have one document at all times) | ||
| deleteAllDocuments() | ||
| } | ||
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| fun deleteAllDocuments() { | ||
| dataStore.deleteAll() | ||
| } | ||
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| } | ||
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| data class SdJwtDocument( | ||
| val id: String, | ||
| val vct: String, | ||
| val docName: String, | ||
| val requiresUserAuth: Boolean, | ||
| val data: String, | ||
| ) | ||
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| private class SdJwtDocumentDataStore( | ||
| context: Context, | ||
| val requiresUserAuth: Boolean, | ||
| ) { | ||
| private var sharedPreferences = getEncryptedSharedPreferences(context, PREF_FILE_NAME) | ||
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| fun add(id: String, credentials: String) { | ||
| sharedPreferences.edit().putString(id, credentials).apply() | ||
| } | ||
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| fun get(id: String) = sharedPreferences.getString(id, null)?.toDocument(id, requiresUserAuth) | ||
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| fun getAll() = sharedPreferences.all.mapNotNull { | ||
| (it.value as? String)?.toDocument(it.key, requiresUserAuth) | ||
| } | ||
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| fun delete(id: String) { | ||
| sharedPreferences.edit().remove(id).apply() | ||
| } | ||
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| fun deleteAll() { | ||
| sharedPreferences.edit().clear().apply() | ||
| } | ||
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| private companion object { | ||
| private const val PREF_FILE_NAME = "document_manager_sdjwt_prefs" | ||
| } | ||
| } | ||
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| private fun String.toDocument( | ||
| id: String, | ||
| requiresUserAuth: Boolean, | ||
| ) = try { | ||
| val payloadString = split(".")[1] | ||
| val payloadJson = JSONObject(String(Base64.getUrlDecoder().decode(payloadString))) | ||
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| val vct = payloadJson.getString("vct") | ||
| val docName = "Personalausweis" | ||
| val data = payloadJson.toString() | ||
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| SdJwtDocument( | ||
| id = id, | ||
| vct = vct, | ||
| docName = docName, | ||
| requiresUserAuth = requiresUserAuth, | ||
| data = this, | ||
| ) | ||
| } catch (_: JSONException) { | ||
| null | ||
| } |
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Kurze Frage:
Waren unsere ID's jetzt gesynced, so dass das funktionieren kann?
(Oder nicht und wir müssen das noch einmal anpassen?)
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Die Id´s sind nicht synced, aber wir gehen davon aus, dass wir nur ein SdJwt haben können und löschen das wenn irgendein Mdoc gelöscht wird. Das ist good enough würde ich sagen. Wir sollten in die Lib noch einen Check einbauen, dass man nicht mehr als ein Pid haben kann, damit hier nichts kaputt gehen kann