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-rw-r--r--moon-abe/pbc-0.5.14/arith/tinyfp.c304
1 files changed, 0 insertions, 304 deletions
diff --git a/moon-abe/pbc-0.5.14/arith/tinyfp.c b/moon-abe/pbc-0.5.14/arith/tinyfp.c
deleted file mode 100644
index 50e883e1..00000000
--- a/moon-abe/pbc-0.5.14/arith/tinyfp.c
+++ /dev/null
@@ -1,304 +0,0 @@
-// F_p for small p, i.e. at most sizeof(long) bytes long.
-// Assumes long long is at least twice long.
-
-// TODO: Fix outstanding bugs and use in PBC.
-
-#include <stdarg.h>
-#include <stdio.h>
-#include <stdint.h> // for intptr_t
-#include <stdlib.h>
-#include <string.h>
-#include <gmp.h>
-#include "pbc_utils.h"
-#include "pbc_field.h"
-#include "pbc_random.h"
-#include "pbc_fp.h"
-#include "pbc_memory.h"
-
-// Mostly wrappers. We use GMP routines for pow_mpz and invert.
-
-static void fp_init(element_ptr e) {
- unsigned long *p = e->data = pbc_malloc(sizeof(unsigned long));
- *p = 0;
-}
-
-static void fp_clear(element_ptr e) {
- pbc_free(e->data);
-}
-
-static void fp_set_mpz(element_ptr e, mpz_ptr z) {
- mpz_t r;
- mpz_init(r);
- unsigned long *p = e->field->data;
- unsigned long *l = e->data;
- mpz_fdiv_r_ui(r, z, *p);
- *l = mpz_get_ui(r);
- mpz_clear(r);
-}
-
-static void fp_set_si(element_ptr e, signed long int op) {
- unsigned long int *d = e->data;
- unsigned long *p = e->field->data;
- if (op < 0) {
- *d = (-op) % *p;
- *d = *p - *d;
- } else {
- *d = op % *p;
- }
-}
-
-static void fp_to_mpz(mpz_ptr z, element_ptr e) {
- unsigned long int *l = e->data;
- mpz_set_ui(z, *l);
-}
-
-static void fp_set0(element_ptr e) {
- unsigned long int *l = e->data;
- *l = 0;
-}
-
-static void fp_set1(element_ptr e) {
- unsigned long int *l = e->data;
- *l = 1;
-}
-
-static int fp_is1(element_ptr e) {
- unsigned long int *l = e->data;
- return *l == 1;
-}
-
-static int fp_is0(element_ptr e) {
- unsigned long int *l = e->data;
- return *l == 0;
-}
-
-static size_t fp_out_str(FILE *stream, int base, element_ptr e) {
- size_t result;
- mpz_t z;
- mpz_init(z);
- fp_to_mpz(z, e);
- result = mpz_out_str(stream, base, z);
- mpz_clear(z);
- return result;
-}
-
-static void fp_add(element_ptr c, element_ptr a, element_ptr b) {
- unsigned long *prime = a->field->data;
- unsigned long *p = a->data;
- unsigned long *q = b->data;
- unsigned long *r = c->data;
- unsigned long l0;
- l0 = *p + *q;
- if (l0 < *p) {
- //overflow
- l0 -= *prime;
- }
- *r = l0 % *prime;
-}
-
-static void fp_double(element_ptr c, element_ptr a) {
- unsigned long *prime = a->field->data;
- unsigned long *p = a->data;
- unsigned long *r = c->data;
- *r = 2 * *p;
- if (*r < *p) {
- //overflow
- *r -= *prime;
- }
- *r = *r % *prime;
-}
-
-static void fp_sub(element_ptr c, element_ptr a, element_ptr b) {
- unsigned long *prime = a->field->data;
- unsigned long *p = a->data;
- unsigned long *q = b->data;
- unsigned long *r = c->data;
-
- if (*p >= *q) {
- *r = *p - *q;
- } else {
- *r = *prime - *q + *p;
- }
-}
-
-static void fp_mul(element_ptr c, element_ptr a, element_ptr b) {
- unsigned long *prime = a->field->data;
- unsigned long *p = a->data;
- unsigned long *q = b->data;
- unsigned long long ll;
- unsigned long *r = c->data;
-
- ll = *p * *q;
- *r = ll % *prime;
-}
-
-static void fp_square(element_ptr c, element_ptr a) {
- fp_mul(c, a, a);
-}
-
-static void fp_neg(element_ptr c, element_ptr a) {
- unsigned long *prime = a->field->data;
- unsigned long *r = c->data;
- unsigned long *p = a->data;
- if (*p) {
- *r = *prime - *p;
- } else {
- *r = 0;
- }
-}
-
-static void fp_mul_si(element_ptr c, element_ptr a, signed long int op) {
- unsigned long *prime = a->field->data;
- unsigned long *p = a->data;
- unsigned long long ll;
- unsigned long *r = c->data;
-
- ll = *p * op;
- *r = ll % *prime;
-}
-
-static void fp_pow_mpz(element_ptr c, element_ptr a, mpz_ptr op) {
- unsigned long *r = c->data;
- mpz_t z;
- mpz_init(z);
- fp_to_mpz(z, a);
- mpz_powm(z, z, op, a->field->order);
- *r = mpz_get_ui(z);
- mpz_clear(z);
-}
-
-static void fp_set(element_ptr c, element_ptr a) {
- unsigned long *p = a->data;
- unsigned long *r = c->data;
- *r = *p;
-}
-
-static void fp_invert(element_ptr c, element_ptr a) {
- unsigned long *r = c->data;
- mpz_t z;
- mpz_init(z);
- fp_to_mpz(z, a);
- mpz_invert(z, z, a->field->order);
- *r = mpz_get_ui(z);
- mpz_clear(z);
-}
-
-static void fp_random(element_ptr c) {
- unsigned long *r = c->data;
- mpz_t z;
- mpz_init(z);
- pbc_mpz_random(z, c->field->order);
- *r = mpz_get_ui(z);
- mpz_clear(z);
-}
-
-static void fp_from_hash(element_ptr n, void *data, int len) {
- mpz_t z;
-
- mpz_init(z);
- mpz_import(z, len, -1, 1, -1, 0, data);
- fp_set_mpz(n, z);
- mpz_clear(z);
-}
-
-static int fp_cmp(element_ptr a, element_ptr b) {
- unsigned long *p = a->data;
- unsigned long *q = b->data;
- return *p != *q;
-}
-
-static int fp_sgn_odd(element_ptr a) {
- unsigned long *p = a->data;
- if (!*p) return 0;
- return *p & 1 ? 1 : -1;
-}
-
-static int fp_is_sqr(element_ptr a) {
- int res;
- mpz_t z;
- mpz_init(z);
- //0 is a square
- if (fp_is0(a)) return 1;
- fp_to_mpz(z, a);
- res = mpz_legendre(z, a->field->order) == 1;
- mpz_clear(z);
- return res;
-}
-
-static int fp_to_bytes(unsigned char *data, element_t e) {
- unsigned long *p = e->data;
- unsigned long l = *p;
- int i, n = e->field->fixed_length_in_bytes;
- for (i = 0; i < n; i++) {
- data[n - i - 1] = (unsigned char) l;
- l >>= 8;
- }
- return n;
-}
-
-static int fp_from_bytes(element_t e, unsigned char *data) {
- unsigned char *ptr = data;
- unsigned long *p = e->data;
- int i, n = e->field->fixed_length_in_bytes;
- *p = 0;
- for (i=0; i<n; i++) {
- *p <<= 8;
- *p += *ptr;
- ptr++;
- }
- return n;
-}
-
-static void fp_field_clear(field_t f) {
- pbc_free(f->data);
-}
-
-void field_init_tiny_fp(field_ptr f, mpz_t prime) {
- unsigned long *p;
-
- PBC_ASSERT(mpz_fits_ulong_p(prime), "modulus too big");
-
- field_init(f);
- f->init = fp_init;
- f->clear = fp_clear;
- f->set_si = fp_set_si;
- f->set_mpz = fp_set_mpz;
- f->out_str = fp_out_str;
- f->add = fp_add;
- f->sub = fp_sub;
- f->set = fp_set;
- f->mul = fp_mul;
- f->mul_si = fp_mul_si;
- f->square = fp_square;
- f->doub = fp_double;
- f->pow_mpz = fp_pow_mpz;
- f->neg = fp_neg;
- f->cmp = fp_cmp;
- f->sign = fp_sgn_odd;
- f->invert = fp_invert;
- f->random = fp_random;
- f->from_hash = fp_from_hash;
- f->is1 = fp_is1;
- f->is0 = fp_is0;
- f->set0 = fp_set0;
- f->set1 = fp_set1;
- f->is_sqr = fp_is_sqr;
- f->sqrt = element_tonelli;
- f->field_clear = fp_field_clear;
- f->to_bytes = fp_to_bytes;
- f->from_bytes = fp_from_bytes;
- f->to_mpz = fp_to_mpz;
-
- p = f->data = pbc_malloc(sizeof(long));
- *p = mpz_get_ui(prime);
- {
- unsigned long int l = 255;
- f->fixed_length_in_bytes = 1;
- while (l < *p) {
- f->fixed_length_in_bytes++;
- l <<= 8;
- l += 255;
- }
- }
- mpz_set(f->order, prime);
-}