• HOLY ELLIPTIC CURVE, BATMAN! RB has trapped the dynamic duo of Anna and Simon in one of his cruel cryptographic contraptions. Each member has been locked in a sound-proof box with only a small interface in front of them to send information to one another.
• Displayed on the interfaces are an elliptic curve equation, a private key, and an input box to send information to their partner.
• Anna's private key is 167. Simon's private key is 152. The pictured elliptic curve is y^2 = x^3 + 18x + 9 (mod 8011).
• Before heading off to perform his heist, RB cackled and told Dr. Tom that the prisons would not open until they both input the shared secret key they can generate from the Elliptic Curve algorithm using the perfect generator point on the curve with the greatest x-coordinate. Out of the two y-coordinates on the generator point's x-coordinate, the lower y-coordinate will be used.
• Will Anna and Simon escape to stop the vile villainy of the RB?
• Flag Format: jctf{(0,0)}

Developed by Logan DesRochers