Questions tagged [eddsa]

In public-key cryptography, Edwards-curve Digital Signature Algorithm (EdDSA) is a digital signature scheme using a variant of Schnorr signature based on twisted Edwards curves. It is designed to be faster than existing digital signature schemes without sacrificing security. It was developed by a team including Daniel J. Bernstein, Niels Duif, Tanja Lange, Peter Schwabe, and Bo-Yin Yang. The reference implementation is public domain software.

3 questions with no upvoted or accepted answers
Filter by
Sorted by
Tagged with
2
votes
0answers
180 views

Does EdDSA share Schnorr signature secure linearity property?

EdDSA, Edwards-curve Digital Signature Algorithm (EdDSA), is a digital signature scheme using a variant of Schnorr signature based on Twisted Edwards curves (source). Schnorr signatures have a ...
1
vote
0answers
53 views

Why does EDDSA secret scaler pruning not prevent values >= prime L or zero?

I have been exploring and studying the EDDSA algorithm for curve 25519 and curve 448 in RFC 8032 (https://www.rfc-editor.org/rfc/rfc8032) as well as for curves 414 and 521 from this (https://eprint....
0
votes
0answers
34 views

Why is the cofactor of the twisted Edwards curve equal to 8?

While The cofactor of the Edwards curve is chosen $4$ in standards, the cofactor of the twisted Edwards curve is chosen $8$. I can't understand the reason for this. Can we choose cofactor $4$ for the ...