anchor.diff:  
   Ed25519 on the other hand is specifically designed to avoid this kind of errors,
   it also has very good performance characteristics both for signing and verification,
  -it's recently been standardized
  +see https://tools.ietf.org/html/rfc8032[RFC8032] for details
   
   [[generate-keypairs]]
   === How I can generate keypairs?
  
positive.code: 
  Currently supported JWK key types are
  
  * RSA key pairs
  * OKP key pairs (Ed25519)
  * EC key pairs (P-256, P-384, P-521 curves)
  
  
negative.code: === ECDSA vs EdDSA ?
  
  ECDSA algorithm has one very weak point - it requires cryptographically secure
  random numbers not only for key generation but also for EVERY signature creation.
  
  If attacker has two signatures for same data and can guess random number used
  for their creation, then she can calculate private key (see PS3 ECDSA exploit
  