Protocol++® (Protocolpp®)  v5.7.0
jecdsaedsa Class Reference

#include "include/jecdsaedsa.h"

Detailed Description

Edwards Curve Digital Signature Algorithm Security Association (ECDSAEDSA) for Ed25519

See RFC8032 for more information

The Edwards-curve Digital Signature Algorithm (EdDSA) is a variant of Schnorr’s signature system with (possibly twisted) Edwards curves. EdDSA needs to be instantiated with certain parameters, and this document describes some recommended variants

To facilitate adoption of EdDSA in the Internet community, this document describes the signature scheme in an implementation-oriented way and provides sample code and test vectors

The advantages with EdDSA are as follows:

  1. EdDSA provides high performance on a variety of platforms
  2. The use of a unique random number for each signature is not required
  3. It is more resilient to side-channel attacks
  4. EdDSA uses small public keys (32 or 57 bytes) and signatures (64 or 114 bytes) for Ed25519 and Ed448, respectively
  5. The formulas are "complete", i.e., they are valid for all points on the curve, with no exceptions. This obviates the need for EdDSA to perform expensive point validation on untrusted public values
  6. EdDSA provides collision resilience, meaning that hash-function collisions do not break this system (only holds for PureEdDSA)

Ed25519 is intended to operate at around the 128-bit security level and Ed448 at around the 224-bit security level. A sufficiently large quantum computer would be able to break both. Reasonable projections of the abilities of classical computers conclude that Ed25519 is perfectly safe. Ed448 is provided for those applications with relaxed performance requirements and where there is a desire to hedge against analytical attacks on elliptic curves

For API information:

See also
ProtocolPP::jsecass
ProtocolPP::jecdsaedsa
ProtocolPP::jecdsaed
ProtocolPP::jprotocol
ProtocolPP::jprotocolpp
ProtocolPP::jenum

For Additional Documentation:

See also
jsecass
jecdsaedsa
jecdsaed
jprotocol
jprotocolpp
jenum
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The documentation for this class was generated from the following file: