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As PBKDF2 is a key derivation function, its primary purpose is to turn a secret, low-entropy value into a higher entropy secret key. In your use-case, if the key is expected to be secret (I assume it is), then using only publicly known data associated with the user will result in a key that anyone with access to the PBKDF2 parameters can generate. That said, ...


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Rather no. There is no standard construction going by the name Key Derivation Function aimed at generating public/private key pairs. Traditionally, especially for RSA, how to generate a key pair is left at the discretion of the implementation, rather than made per a specific deterministic process. The usual name is Key Generation. And it's usually stated as ...


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