How to create your own security provider with some crypto algorithm?

Using official tutorial i understood the main principles of Java Cryptography Architecture. But neither the officials nor internet gives me anything distinct about creating my own provider and implementing some crypto algorithms.

I wonder if anyone can give me the source code of a simple security provider and/or a source code of some algorithm, which is used by this provider.

Overall, the main target is : a provider class ( simple one, not the complicated like SunJCE ) and a bunch of classes ( or one class ) with cryptography algorithm implementation ( with all it's doFi开发者_如何学Gonal and other method, whatever the implementation class needs )

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Try How to Implement a Provider for the JavaTM Cryptography Extension.