CDSA deprecated in OS X Lion. What replaces it?

I just read that CDSA is deprecated in OS X 10.7.

What is the recommended replacement?

I am especially interested in the plugin framework: what is the new way to implement access to smartcards etc.? Tokend is dep开发者_Go百科recated now: what does Mail and Safari use to access private keys?

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As it seems by Apple's own CommonCrypto system.

• Here's a link to the man pages.
• It seems to have been originally developed for iOS.