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+// requires
+// * gmp.h
+// * param.h
+#ifndef __PBC_A1_PARAM_H__
+#define __PBC_A1_PARAM_H__
+
+struct symtab_s;
+int pbc_param_init_a1(pbc_param_ptr par, struct symtab_s *tab);
+
+/*@manual a1param
+Generate type A1 pairing parameters and store them in 'p'. The group order
+will be 'n'. The order of the base field is a few bits longer. To be secure,
+generic discrete log algorithms must be infeasible in groups of order 'n', and
+finite field discrete log algorithms must be infeasible in finite fields of
+order roughly 'n'^2^. Additionally, 'n' should be hard to factorize.
+
+For example: 'n' a product of two primes, each at least 512 bits.
+
+The file `param/a1.param` contains sample parameters for a
+type A1 pairing, but it is only for benchmarking: it is useless without
+the factorization of +n+, the order of the group.
+*/
+void pbc_param_init_a1_gen(pbc_param_t param, mpz_t n);
+
+#endif //__PBC_A1_PARAM_H__