iTunes/iCloud 是否备份了钥匙串密码？
Is a keychain password backed up by iTunes/iCloud?
我一直无法在官方文档中找到明确的答案。
kSecAttrAccessible 是否会影响 class kSecClassGenericPassword 的钥匙串项的备份方式？
只有 kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly 明确声明该项目未备份。
AFAICS，kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly 使其明确的唯一原因是因为它是设计使然。
这是否意味着是否备份 kSecClassGenericPassword 是一个实现细节，因此可能会发生变化？
强调我的。
iCloud Backup acts like an iTunes backup without a password: the keychain items are included in the backup but they are wrapped with a device-specific key. Thus, they can only be restored to the device that originally backed them up, which means that they get lost when you restore the backup to a different device
奎因“爱斯基摩人！”
Apple 开发者关系、开发者技术支持、核心 OS/Hardware
我一直无法在官方文档中找到明确的答案。
kSecAttrAccessible 是否会影响 class kSecClassGenericPassword 的钥匙串项的备份方式？
只有 kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly 明确声明该项目未备份。 AFAICS，kSecAttrAccessibleWhenPasscodeSetThisDeviceOnly 使其明确的唯一原因是因为它是设计使然。
这是否意味着是否备份 kSecClassGenericPassword 是一个实现细节，因此可能会发生变化？
强调我的。
iCloud Backup acts like an iTunes backup without a password: the keychain items are included in the backup but they are wrapped with a device-specific key. Thus, they can only be restored to the device that originally backed them up, which means that they get lost when you restore the backup to a different device
奎因“爱斯基摩人！”
Apple 开发者关系、开发者技术支持、核心 OS/Hardware