El Gamal encryption question

1. Mar 22, 2009

ploppers

1. The problem statement, all variables and given/known data

Suppose someone uses ElGamal to encrypt a message. You know
that the public key is p = 29, g = 18, and a = 14. The message was translated
from letters into numbers by the system A $2, B$ 3, ..., Z \$ 27. If the
encrypted message was
M1 = 17 M2 = 14; 11; 9; 24; 23; 24; 11;
then what was the original message?

2. Relevant equations