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| Security Topics | 
| Services that aid in verifying the identity of a user or service. |  | APIs for determining whether an entity should be permitted to use a particular service. |  | Authentication, authorization, and cryptographic services for Carbon applications. | 
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| Authentication, authorization, and cryptographic services for Cocoa applications. |  | Security-related programming techniques for the lowest level of Mac OS X. |  | Resources for creating hardware devices compatible with Apple security technology. | 
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| Authentication, authorization, and cryptographic services of interest to web developers. |  | Authentication, authorization, and cryptographic services for server applications. |  | Programming interfaces for secure communication over a network. | 
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| View legacy documents, including technologies, features, products, APIs, and programming techniques that are no longer supported or have been superseded. |