lost my iphone development certificates and private key [duplicate]

This question already has answers here: lost my iphone development certificates (2 answers) Closed 9 years 开发者_C百科ago.

I lost the certificate the private key everything

I did everything from scratch as per the manual that is i started with the certificate process till the end but still i have the same problem when i choose to install the application into the iPhone device.

Here is the problem message when i click into Any iOS device in the info icon.

The name ("common name") of a valid code-signing certificate in a keychain within your keychain pah. A missing or invalid certificate will cause a build error. [CODE_SIGN_IDENTITY]

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login to the iphone developer portal all the certificates/profiles can be found there or if in need be regenerated

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Add the Apple Worldwide Developer Relations Authority Certificate