![]() This signature can be tied back to your identity. It is made up of a private key that is used for code signing and a public key that is distributed as part of the signature. This identity is represented by your developer certificate. To then sign this hash, you use your developer identity. Code signing is a mechanism to cryptographically link the final complied binary and the associated metadata such as the ist or the privacy manifest for your framework or, for certain types of distribution, the source code itself, with your developer identity.Īt a high level, code signing works by first generating a Code Directory hash, also known as the CDHash, of your compiled binary. ![]() When you are developing an SDK for app developers to use, you want to ensure that no one can modify or tamper with it during its distribution to your SDK clients. I'll get started with how Apple's code signing technology works. And finally, I will discuss what SDK authors can do to improve the security of the ecosystem. And then I will talk about how app developers can use this feature to ensure that their dependencies haven't been compromised. To begin, I will give you an overview on how Apple's code signing technology works and what Xcode now does to verify the signatures of your dependencies. Now that you know what supply chain security is, I will talk about the role that digital signatures play in protecting developers and in helping reduce this burden. The processes and tools available to mitigate these risks can be burdensome or complex to do manually.ĭependency signature verification is a new Xcode feature that can make this task easy and automatic. This responsibility also extends to SDK authors who include other SDKs as part of their development. You have the responsibility of protecting your users by being selective of what dependencies you include and to ensure that you don't accidentally use a version that has been maliciously modified. Supply chain security is the process of mitigating these risks. Using third party SDKs can make app development significantly easier and can provide extended functionality. These form the app's supply chain and can include frameworks, Swift source files, and other types of dependencies. Some are made by Apple, some by app developers to use across all of their apps, and some that app developers obtain from other sources. ![]() Dependency signature verification within Xcode will help app developers protect their apps and dependency authors protect the SDKs they distribute.Īpps are developed using a range of SDKs. At Apple, we believe that privacy should be at the core of everyone's development process, as much as it is at the core of our products. I'm here to introduce a new and exciting Privacy and Security feature in Xcode that will help you automatically verify the integrity of your dependencies. Here are the release notes from iOS 17.♪ ♪ Kay: Hey, this is Kay from Privacy Engineering. While iOS 17.2.1 only mentions bug fixes, iOS 17.2 was a much larger update with Apple’s new Journal app and much more. That update is being developed alongside iOS 17.3, which introduces new protections against stolen devices. ![]() The macOS update comes just a few weeks after macOS 14.2 officially arrived with enhanced AutoFill and more features.Īpple is also testing macOS 14.3 beta with both developer and public beta features. The software update includes bug fixes to iOS 17.2.Īpple also released macOS 14.2.1 beta. Apple has released iOS 17.2.1 for iPhone.
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