Related papers: Pseudorandom permutations with the fast forward pr…

This paper has been withdrawn by the author: it was a too preliminary version.

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This paper was withdrawn by the authors due to the belated discovery of a published paper showing similar results.

This paper has been withdrawn by the author [arXiv admin].

This paper has been withdrawn by the author due to a coming paper completely superseding it.

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This paper has been withdrawn by the author due to text overlap with arXiv:1102.5004, as well as omission of proper citations to arXiv:1110.4655 and arXiv:1111.0313

This paper has been withdrawn by the author.

This paper is withdrawn because the results in the paper are included in a paper to be published in Mathematical and Computer Modelling.

This paper has been withdrawn by the author due to errors and bad formalization.

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This paper has been withdrawn by the author, due to an error in the proof of Theorem 3.8.

The paper was retracted.

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This paper has been withdrawn.

This paper has been withdrawn by the author.

This paper has been withdrawn by the author, due to errors in the figures.

This paper has been withdrawn by the authors due to some errors.

This paper has been withdrawn by the authors due to a crucial error.

This paper has been withdrawn by the author because it was a speculative investigation.