The java.security.KeyFactory.getInstance is a method in Java's security package that allows the creation of instances of KeyFactory subclasses. This factory method follows the singleton design pattern and returns an instance of the specified algorithm's KeyFactory implementation. It is primarily used for converting encoded keys into their corresponding Key objects, which are then used for cryptographic operations. The getInstance method accepts a string parameter representing the algorithm and an optional provider parameter specifying the provider of the algorithm implementation. It throws NoSuchAlgorithmException if the requested algorithm is not available or InvalidParameterException if the specified provider is invalid.
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