kopia lustrzana https://github.com/vitorpamplona/amethyst
55 wiersze
2.3 KiB
Kotlin
55 wiersze
2.3 KiB
Kotlin
/**
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* Copyright (c) 2024 Vitor Pamplona
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy of
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* this software and associated documentation files (the "Software"), to deal in
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* the Software without restriction, including without limitation the rights to use,
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* copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the
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* Software, and to permit persons to whom the Software is furnished to do so,
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* subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in all
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* copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
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* FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
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* COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
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* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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package com.vitorpamplona.amethyst
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import android.content.Context
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import androidx.security.crypto.EncryptedSharedPreferences
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import androidx.security.crypto.MasterKey
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class EncryptedStorage {
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companion object {
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private const val PREFERENCES_NAME = "secret_keeper"
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// returns the preferences for each account or a global file if null.
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fun prefsFileName(npub: String? = null): String {
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return if (npub == null) PREFERENCES_NAME else "${PREFERENCES_NAME}_$npub"
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}
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fun preferences(
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applicationContext: Context,
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npub: String? = null,
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): EncryptedSharedPreferences {
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val masterKey: MasterKey =
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MasterKey.Builder(applicationContext, MasterKey.DEFAULT_MASTER_KEY_ALIAS)
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.setKeyScheme(MasterKey.KeyScheme.AES256_GCM)
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.build()
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return EncryptedSharedPreferences.create(
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applicationContext,
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prefsFileName(npub),
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masterKey,
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EncryptedSharedPreferences.PrefKeyEncryptionScheme.AES256_SIV,
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EncryptedSharedPreferences.PrefValueEncryptionScheme.AES256_GCM,
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) as EncryptedSharedPreferences
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}
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}
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}
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