Ryo24

<p>Isar v4から暗号化対応する。<br>
(執筆時点ではv3のため、微妙)<br style="display:none">
<span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__0753df4ad5216" src="https://embed.zenn.studio/card#zenn-embedded__0753df4ad5216" data-content="https%3A%2F%2Fgithub.com%2Fisar%2Fisar%2Fissues%2F292%23issuecomment-1646993830" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://github.com/isar/isar/issues/292#issuecomment-1646993830" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://github.com/isar/isar/issues/292#issuecomment-1646993830</a></p>


<p>shared_preferencesでセキュアなデータは保存できないらしい</p>
<ul>
<li>iOS: <code>NSUserDefaults</code>
</li>
<li>Android: <code>SharedPreferences</code>
</li>
</ul>
<p>をラップしているらしい</p>


<p><code>NSUserDefaults</code> の公式ドキュメントに暗号化有無の記載はなし<br style="display:none">
<span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__5119507af798c" src="https://embed.zenn.studio/card#zenn-embedded__5119507af798c" data-content="https%3A%2F%2Fdeveloper.apple.com%2Fdocumentation%2Ffoundation%2Fnsuserdefaults" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://developer.apple.com/documentation/foundation/nsuserdefaults" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://developer.apple.com/documentation/foundation/nsuserdefaults</a></p>


<p>Androidの場合、<a href="https://developer.android.com/reference/android/content/SharedPreferences.html" target="_blank" rel="nofollow noopener noreferrer">SharedPreferences</a>に暗号化有無の記載はないが、<a href="https://developer.android.com/reference/androidx/security/crypto/EncryptedSharedPreferences" target="_blank" rel="nofollow noopener noreferrer">EncryptedSharedPreferences</a>があるので、察するとね、、、</p>


<p>Keychainというセキュア情報専門のストレージはあるので、「察しろ」ということにしよう。<br style="display:none">
<span class="embed-block zenn-embedded zenn-embedded-card"><iframe id="zenn-embedded__83145f73b8da9" src="https://embed.zenn.studio/card#zenn-embedded__83145f73b8da9" data-content="https%3A%2F%2Fdeveloper.apple.com%2Fdocumentation%2Fsecurity%2Fkeychain_services" frameborder="0" scrolling="no" loading="lazy"></iframe></span><a href="https://developer.apple.com/documentation/security/keychain_services" style="display:none" target="_blank" rel="nofollow noopener noreferrer">https://developer.apple.com/documentation/security/keychain_services</a></p>
