y^2 = x^3 + ax + b a = 3820149076078175358 b = 1296618846080155687 modulus = 11648516937377897327 G = (4612592634107804164, 6359529245154327104) PubKey = (9140537108692473465, 10130615023776320406) k*G = (7657281011886994152, 10408646581210897023) C = (5414448462522866853, 5822639685215517063) What's the message?