Trying to solve problem with verifying a message through the ElGamal signature scheme and I end up getting two different values.
I'm given a prime number $p = 881$, $e_1 = 3 d = 60$, random value $r = 11$. I have to
a) Find $e_2$ and the signature of the message $M = 300$.
b) Verify the signature.
I'm stuck on part $b$. Verifying $V_1$ and $V_2$ I get two different answers and I'm unsure whether I'm doing the calculations wrong or if that's the answer.
Here's the diagram showing the formulas for each calculation along the ElGamal signature process.
