<p>If you&#8217;re a developer or app publisher, you know how important it is to sign your binaries correctly. Signing your binaries allows your users to trust your app and its source, and it&#8217;s required if you want to publish your app on an app store. But what if you need to change the signing certificate or keystore for your app? That&#8217;s where resigning comes in.</p>
<p>We&#8217;re excited to announce that <a href="https://appcircle.io" target="_blank" rel="noopener">Appcircle</a> now supports the integration of resigning iOS and Android binaries into the Test Distribution module! With this update, app publishers can easily generate new signed binaries with updated information. As a result, their users can trust the app and that it installs correctly. Whether you&#8217;re updating an existing app or transferring it to a new developer account, Appcircle makes resigning binaries a breeze.</p>
<h2>Binary Signing 101</h2>
<p>Before we get into resigning, let&#8217;s go over the basics of binary signing.</p>
<ul>
<li>Binary signing provides a digital &#8220;stamp of approval&#8221; for the app, verifying that it comes from a trusted source and has not been tampered with.</li>
<li>To sign a binary, you need a certificate and a private key.</li>
<li>The certificate contains information about the developer or publisher, while the private key is used to create the digital signature.</li>
<li>When a user installs your app, their device checks the signature to make sure it matches the certificate.</li>
<li>If the signature matches the certificate, the app is installed and can be trusted.</li>
</ul>
<h2>Why Resigning is Necessary</h2>
<p>There are several reasons why you might need to resign a binary.</p>
<ul>
<li>Transferring ownership of an app to a new developer account, for example, when a company acquires another company and wants to move the app to its developer account.</li>
<li>Updating an app after a certificate has expired or been revoked, for example, when a certificate used to sign an app has expired or been compromised and needs to be renewed or replaced.</li>
<li>Changing the name or bundle identifier, for example, when rebranding an app or creating a new version that targets a different market.</li>
</ul>
<p><a href="https://auth.appcircle.io/auth/realms/appcircle/protocol/openid-connect/auth?client_id=appcircle-web&amp;state=1682691053750&amp;redirect_uri=https%3A%2F%2Fmy.appcircle.io%2F%3Fauth_callback%3D1&amp;scope=openid&amp;response_type=code"><img class="aligncenter size-full wp-image-4431" src="https://ac.appcircle.io/wp-content/uploads/2023/04/Save-time_-reduce-costs-and-increase-developer-productivity-with-Appcircle-now.-min.webp" alt="" width="1935" height="627" /></a></p>
<h2>Resigning iOS Binaries</h2>
<p>Resigning an iOS binary used to be a complicated process, but with Appcircle, it&#8217;s easy and straightforward. Here&#8217;s how:</p>
<ol>
<li style="list-style-type: none;">
<ol>
<li>Select the binary. You can either select the files from the list or upload IPA or xcarchive files by clicking the Upload New Version button at the bottom.<img class="aligncenter" src="https://cdn.appcircle.io/docs/assets/resign1.png" alt="resigning-binaries-ios-first-step" width="2880" height="1364" /></li>
<li>Click the &#8220;&#8230;&#8221; button and select &#8220;Resign Binary.&#8221;<br />
<img class="size-full aligncenter" src="https://cdn.appcircle.io/docs/assets/resign2.png" alt="resigning-binaries-ios-second" width="2876" height="1362" /></li>
<li>Fill in the details for the resign process, including the bundle identifier and version number. Appcircle will generate a new signed binary with the updated information. <img class="aligncenter size-full" src="https://cdn.appcircle.io/docs/assets/resign3.png" alt="resigning-binaries-ios-third" width="2880" height="1402" /></li>
<li>Hit the &#8220;Sign&#8221; button and done!</li>
</ol>
</li>
</ol>
<h2>Resigning Android Binaries</h2>
<p>Resigning an Android binary is even easier with Appcircle. Here&#8217;s how:</p>
<ol>
<li style="list-style-type: none;">
<ol>
<li>Select the binary. You can either select the files from the list or upload APK or AAB files by clicking the Upload New Version button at the bottom.<img class="aligncenter size-full" src="https://cdn.appcircle.io/docs/assets/resign1.png" alt="resigning-binaries-android-first" width="2880" height="1364" /></li>
<li>Click the &#8220;&#8230;&#8221; button and select &#8220;Resign Binary.&#8221;<img class="aligncenter size-full" src="https://cdn.appcircle.io/docs/assets/resign2.png" alt="resigning-binaries-android-second" width="2876" height="1362" /></li>
<li>Select the correct keystore and click the &#8220;Sign&#8221; button to sign your binary.</li>
</ol>
</li>
</ol>
<h2><a href="https://auth.appcircle.io/auth/realms/appcircle/protocol/openid-connect/auth?client_id=appcircle-web&amp;state=1682691053750&amp;redirect_uri=https%3A%2F%2Fmy.appcircle.io%2F%3Fauth_callback%3D1&amp;scope=openid&amp;response_type=code"><img class="aligncenter size-full wp-image-4367" src="https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-scaled.webp" alt="resigning-binaries-banner-2" width="2560" height="822" srcset="https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-scaled.webp 2560w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-300x96.webp 300w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-1030x331.webp 1030w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-768x247.webp 768w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-1536x493.webp 1536w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-2048x658.webp 2048w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-1500x482.webp 1500w, https://ac.appcircle.io/wp-content/uploads/2023/04/blog-bottom-promo-705x226.webp 705w" sizes="(max-width: 2560px) 100vw, 2560px" /></a>Binary Details and Resign History</h2>
<p>Appcircle also provides helpful features for managing your binaries, including Binary Details and Resign History. Binary Details shows basic information about your binary, including its version number, build number, and signing certificate. Resign History lists each signing process for that binary, and you can view detailed logs for each one.<img class="aligncenter " src="https://cdn.appcircle.io/docs/assets/resign6.png" alt="resigning-binaries-binary-detail" width="840" height="409" /></p>
<p>With the integration of resigning iOS and Android binaries into the Test Distribution module of Appcircle, app publishers can easily generate new signed binaries with updated information. Whether you&#8217;re updating an existing app or transferring it to a new developer account, Appcircle makes resigning binaries a breeze.<img class="aligncenter " src="https://cdn.appcircle.io/docs/assets/resign5.png" alt="resigning-binaries-resign-history" width="838" height="408" /></p>
<h2>Benefits of Resigning with Appcircle</h2>
<ul>
<li>Resigning is integrated into Appcircle&#8217;s Test Distribution module, making it easy to use for app publishers.</li>
<li>App publishers can easily generate new signed binaries with updated information, ensuring that their users can trust the app and that it installs correctly.</li>
<li>With the integration of resigning iOS and Android binaries into the Test Distribution module, app publishers can easily streamline the resigning process.</li>
<li>Appcircle provides Binary Details and Resign History, which allows users to manage and view detailed logs for each signing process for their binaries.</li>
<li>Resigning is an essential part of app publishing, and Appcircle makes it easy with its user-friendly interface.</li>
</ul>
<h2>Conclusion</h2>
<p>Resigning binaries is an essential part of app publishing, and Appcircle makes it easy with its user-friendly interface. By resigning your binaries, you ensure that your users can trust your app and that it will install correctly. App publishers can take advantage of the Test Distribution module&#8217;s latest feature: the ability to re-sign iOS and Android binaries. With this new integration, generating updated signed binaries becomes a breeze, resulting in a more streamlined resigning process. For more detailed information about this feature and how to use it, you can check our <a href="https://docs.appcircle.io/distribute/resign" target="_blank" rel="noopener">documentation</a>.</p>
<p>Whether you&#8217;re a seasoned developer or just starting out, Appcircle&#8217;s powerful suite of tools makes app development and distribution a breeze. Try Appcircle today and see how easy app releasing can be!</p>


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