Creates a new ECPrivateKeySpec with the specified
parameter values.
param
s the private value.
param
params the associated elliptic curve domain
parameters.
exception
NullPointerException if s
or params is null.
if (s == null) {
throw new NullPointerException("s is null");
}
if (params == null) {
throw new NullPointerException("params is null");
}
this.s = s;
this.params = params;