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author | Ruan HE <ruan.he@orange.com> | 2015-09-04 07:35:06 +0000 |
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committer | Gerrit Code Review <gerrit@172.30.200.206> | 2015-09-04 07:35:06 +0000 |
commit | ca6aa8198d2335f8c326c3dd4d26bf5899064214 (patch) | |
tree | 6274a2d971fc0cac0896efe8583927d0190e3d20 /moon-abe/pbc-0.5.14/include/pbc_e_param.h | |
parent | 92fd2dbfb672d7b2b1cdfd5dd5cf89f7716b3e12 (diff) | |
parent | 3baeb11a8fbcfcdbc31976d421f17b85503b3ecd (diff) |
Merge "init attribute-based encryption"
Diffstat (limited to 'moon-abe/pbc-0.5.14/include/pbc_e_param.h')
-rw-r--r-- | moon-abe/pbc-0.5.14/include/pbc_e_param.h | 29 |
1 files changed, 29 insertions, 0 deletions
diff --git a/moon-abe/pbc-0.5.14/include/pbc_e_param.h b/moon-abe/pbc-0.5.14/include/pbc_e_param.h new file mode 100644 index 00000000..e59ebe82 --- /dev/null +++ b/moon-abe/pbc-0.5.14/include/pbc_e_param.h @@ -0,0 +1,29 @@ +// Type E pairings. + +// Requires: +// * param.h +#ifndef __PBC_E_PARAM_H__ +#define __PBC_E_PARAM_H__ + +struct symtab_s; +int pbc_param_init_e(pbc_param_ptr par, struct symtab_s *tab); + +/*@manual eparam +Generate type E pairing parameters and store them in 'p', +where the group order r is 'rbits' long, and the order of the base field q +is 'qbits' long. 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, +e.g. 'rbits' = 160, 'qbits' = 1024. + +This pairing is just a curiosity: it can be implemented entirely in a field of +prime order, that is, only arithmetic modulo a prime is needed and there is +never a need to extend a field. + +If discrete log in field extensions are found to be substantially easier to +solve than previously thought, or discrete log can be solved in elliptic curves +as easily as they can be in finite fields, this pairing type may become useful. +*/ +void pbc_param_init_e_gen(pbc_param_t p, int rbits, int qbits); + +#endif //__PBC_E_PARAM_H__ |