The Diffie-Hellman values are not valid. The private value X must be greater than 1 and less than the prime P. The public value Y must be greater than 1 and less than the prime P. In addition, the result of raising the public value Y to the power of the subprime Q modulo the prime P must be equal to 1. See RFC 2631: Diffie-Hellman Key Agreement Method for more information about how the Diffie-Hellman values are generated.