Get application bundle seed ID in iOS

You can programmatically retrieve the Bundle Seed ID by looking at the access group attribute (i.e.kSecAttrAccessGroup) of an existing KeyChain item. In the code below, I look up for an existing KeyChain entry and create one if it doesn’t not exist. Once I have a KeyChain entry, I extract the access group information from it and return the access group’s first component separated by “.” (period) as the Bundle Seed ID.

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