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Diffstat (limited to 'moon-abe/pbc-0.5.14/example/hess.c')
-rw-r--r-- | moon-abe/pbc-0.5.14/example/hess.c | 109 |
1 files changed, 0 insertions, 109 deletions
diff --git a/moon-abe/pbc-0.5.14/example/hess.c b/moon-abe/pbc-0.5.14/example/hess.c deleted file mode 100644 index 8d5a437e..00000000 --- a/moon-abe/pbc-0.5.14/example/hess.c +++ /dev/null @@ -1,109 +0,0 @@ -/* - Hess ID-based signature. - Based on papers "F. Hess. Efficient Identity Based Signature Schemes Based on Pairings. SAC 2002, LNCS 2595, Springer-Verlag, 2000" - Contributed by Dmitry Kosolapov. -*/ - -#include <pbc.h> -#include <pbc_test.h> - -int main(int argc, char **argv) { - pairing_t pairing; - double time1, time2; - pbc_demo_pairing_init(pairing, argc, argv); - - element_t Qid, P, P1, Ppub, s, k, Did, r, v, u, t1, t3, t4, t5, t6, t7, t8; - mpz_t t2; - - if (!pairing_is_symmetric(pairing)) pbc_die("pairing must be symmetric"); - - mpz_init(t2); - element_init_G1(P, pairing); - element_init_G1(P1, pairing); - element_init_G1(Qid, pairing); - element_init_G1(Did, pairing); - element_init_G1(Ppub, pairing); - element_init_G1(t4, pairing); - element_init_G1(t5, pairing); - element_init_G1(u, pairing); - - element_init_Zr(s, pairing); - element_init_Zr(k, pairing); - element_init_Zr(v, pairing); - element_init_Zr(t3, pairing); - element_init_Zr(t8, pairing); - - element_init_GT(r, pairing); - element_init_GT(t1, pairing); - element_init_GT(t6, pairing); - element_init_GT(t7, pairing); - - time1 = pbc_get_time(); - printf("Hess ID-based signature protocol\n"); - printf("KEYGEN\n"); - element_random(P); - element_random(s); - element_random(Qid); - element_mul_zn(Ppub, P, s); - element_mul_zn(Did, Qid, s); - element_printf("Qid = %B\n", Qid); - element_printf("P = %B\n", P); - element_printf("Ppub = %B\n", Ppub); - - printf("SIGN\n"); - element_random(P1); - element_random(k); - element_pairing(t1, P1, P); - element_pow_zn(r, t1, k); - element_to_mpz(t2, r); - - //h3=h(m)*mpz(r); - element_from_hash(t3, "Message", 7); - element_mul_mpz(v, t3, t2); - element_mul_zn(t4, Did, v); - element_mul_zn(t5, P1, k); - element_add(u, t4, t5); - printf("Signature of message \"Message\" is:\n"); - element_printf("u = %B\n", u); - element_printf("v = %B\n", v); - - printf("VERIFY\n"); - element_pairing(t6, u, P); - element_neg(Ppub, Ppub); - element_pairing(t7, Qid, Ppub); - element_pow_zn(t7, t7, v); - element_mul(r, t6, t7); - element_to_mpz(t2, r); - element_from_hash(t3, "Message", 7); - element_mul_mpz(t8, t3, t2); - element_printf("h3(m,r) = %B\n", t8); - element_printf("v = %B\n", v); - if (!element_cmp(t8, v)) { - printf("Signature is valid!\n"); - } else { - printf("Signature is invalid!\n"); - } - time2 = pbc_get_time(); - printf("All time = %fs\n", time2 - time1); - - element_clear(P); - element_clear(P1); - element_clear(Qid); - element_clear(Did); - element_clear(Ppub); - element_clear(t4); - element_clear(t5); - element_clear(u); - element_clear(s); - element_clear(k); - element_clear(v); - element_clear(t3); - element_clear(t8); - element_clear(r); - element_clear(t1); - element_clear(t6); - element_clear(t7); - pairing_clear(pairing); - - return 0; -} |