Submitted on: 16 January 2011.
Revised on: 03 April 2011.
Accepted on: 11 May 2011.
___________________Journal of Mathematical Cryptology
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Submitted on: 26 December 1999.
Revised on: 25 February 2000.
Accepted on: 22 March 2000.
___________________Journal of Mathematical Cryptology
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Submitted on: 16 July 2018.
Revised on: 26 September 2018.
Accepted on: 20 October 2018.
___________________Journal of Mathematical Cryptology
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Submitted on: 22 July 2013.
Revised on: 13 October 2013.
Accepted on: 16 November 2013.
___________________Journal of Mathematical Cryptology