From 3baeb11a8fbcfcdbc31976d421f17b85503b3ecd Mon Sep 17 00:00:00 2001 From: WuKong Date: Fri, 4 Sep 2015 09:25:34 +0200 Subject: init attribute-based encryption Change-Id: Iba1a3d722110abf747a0fba366f3ebc911d25b25 --- moon-abe/pbc-0.5.14/include/pbc_g_param.h | 28 ++++++++++++++++++++++++++++ 1 file changed, 28 insertions(+) create mode 100644 moon-abe/pbc-0.5.14/include/pbc_g_param.h (limited to 'moon-abe/pbc-0.5.14/include/pbc_g_param.h') diff --git a/moon-abe/pbc-0.5.14/include/pbc_g_param.h b/moon-abe/pbc-0.5.14/include/pbc_g_param.h new file mode 100644 index 00000000..0b7bf45d --- /dev/null +++ b/moon-abe/pbc-0.5.14/include/pbc_g_param.h @@ -0,0 +1,28 @@ +// Type G pairings. + +// Requires: +// * mnt.h +// * param.h +#ifndef __PBC_G_PARAM_H__ +#define __PBC_G_PARAM_H__ + +struct symtab_s; +int pbc_param_init_g(pbc_param_ptr par, struct symtab_s *tab); + +/*@manual gparam +Type G curves are generated using the complex multiplication (CM) method. This +function sets 'p' to a type G pairing parameters from CM parameters 'cm'. +They have embedding degree 10. + +To be secure, generic discrete log algorithms must be infeasible in groups of +order r, and finite field discrete log algorithms must be infeasible in finite +fields of order q^6^. For usual CM parameters, r is a few bits smaller than q. + +They are quite slow at the moment so for now type F is a better choice. + +The file `param/g149.param` contains parameters for a +type G pairing with 149-bit group and field sizes. +*/ +void pbc_param_init_g_gen(pbc_param_t p, pbc_cm_ptr cm); + +#endif //__PBC_G_PARAM_H__ -- cgit 1.2.3-korg