Efficient Conversion of Secret-shared Values Between Different Fields

نویسندگان

  • Ivan Damgård
  • Rune Thorbek
چکیده

We show how to effectively convert a secret-shared bit b over a prime field to another field. If initially given a random replicated secret share this conversion can be done by the cost of revealing one secret shared value. By using a pseudo-random function it is possible to convert arbitrary many bit values from one initial random replicated share. Furthermore, we generalize the conversion to handle general values of a bounded size.

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عنوان ژورنال:
  • IACR Cryptology ePrint Archive

دوره 2008  شماره 

صفحات  -

تاریخ انتشار 2008