EdDSA for more curves
نویسندگان
چکیده
• An integer n with c ≤ n ≤ b. Secret EdDSA scalars have exactly n+ 1 bits, with the top bit (the 2 position) always set and the bottom c bits always cleared. The original specification of EdDSA did not include this parameter: it implicitly took n = b−2. Choosing n sufficiently large is important for security: standard “kangaroo” attacks use approximately 1.36 √ 2n−c additions on average to determine an EdDSA secret key from an EdDSA public key.
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عنوان ژورنال:
- IACR Cryptology ePrint Archive
دوره 2015 شماره
صفحات -
تاریخ انتشار 2015