lib/schnorr.rb in tapyrus-0.2.1 vs lib/schnorr.rb in tapyrus-0.2.2

@@ -74,10 +74,10 @@
   # @param (Integer) x a x coordinate for R.
   # @param (ECDSA::Point) p a public key.
   # @return (Integer) digest e.
   def create_challenge(x, p, message)
     r_x = ECDSA::Format::IntegerOctetString.encode(x, GROUP.byte_length)
-    p_str= ECDSA::Format::PointOctetString.encode(p, compression:true)
+    p_str= p.to_hex.htb
     (ECDSA.normalize_digest(Digest::SHA256.digest(r_x + p_str + message), GROUP.bit_length)) % GROUP.order
   end
 
 end
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