iCloud Keychain is a service that synchronizes keychain records featuring the kSecAttrSynchronizable attribute via iCloud. In addition to the device keychain, there is also entity with similar name that lives in the cloud. ICloud Keychain availability by country and region This service has a name of iCloud Keychain. The Apple ecosystem offers an easy way to synchronize keychain records across devices. We’ll have a detailed discussion of the hidden treasures of the keychain in the next chapter. Cryptographic keys are used to encrypt, sign, and verify information. Certificates and identities are used to securely identify users in tamper-evident way. What is not visible to the user (but accessible to iOS developers) are Certificate, Key, and Trust Services. This is how Apple depicts keychain services in the developer documentation.ĭiagram Description automatically generated Applications use the keychain to store identities and authentication tokens, encryption keys and certificates. However, there is a lot more to the keychain than stored passwords. Users can access their stored passwords by opening the Settings app and navigating to |. Password auto-fill service is available for both the Safari browser and apps. iOS prompts users to save passwords users type in Safari. The visible side of the keychain is passwords. Let’s talk about the keychain, its content and its protection, and the methods used to extract, decrypt and analyze the various bits and pieces. The common knowledge is missing the point: the keychain contains literally thousands of records belonging to various apps and the system that are required to access lots of other sensitive information. The common knowledge has it that the keychain contains the users’ logins and passwords, and possibly some payment card information. At the same time, the keychain is relatively underexplored by the forensic community. Containing a plethora of sensitive information, the keychain is one of the best guarded parts of the walled garden. The keychain is one of the hallmarks of the Apple ecosystem.
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