Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b
EC_GROUP object
BIGNUM for the prime number
BIGNUM for parameter a of the equation
BIGNUM for parameter b of the equation
BN_CTX object (optional)
1 on success and 0 if an error occured
See Implementation
Gets the parameter of the ec over GFp defined by y^2 = x^3 + a*x + b