Added gmp

secure_enclave/secure_enclave.c

@@ -94,77 +94,19 @@ void *reallocate_function(void *ptr, size_t osize, size_t nsize) {
 }
 
 void e_mpz_add(mpz_t *c_un, mpz_t *a_un, mpz_t *b_un) {
-  mpz_t a, b, c;
 
-  /*
-   * Marshal untrusted values into the enclave so we don't accidentally
-   * leak secrets to untrusted memory.
-   *
-   * This is overkill for the trivial example in this function, but
-   * it's best to develop good coding habits.
-   */
-
-  mpz_inits(a, b, c, NULL);
-
-  mpz_set(a, *a_un);
-  mpz_set(b, *b_un);
-
-  mpz_add(c, a, b);
-
-  /* Marshal our result out of the enclave */
-
-  mpz_set(*c_un, c);
 }
 
 void e_mpz_mul(mpz_t *c_un, mpz_t *a_un, mpz_t *b_un) {
-  mpz_t a, b, c;
-
-  /* Marshal untrusted values into the enclave. */
 
-  mpz_inits(a, b, c, NULL);
-
-  mpz_set(a, *a_un);
-  mpz_set(b, *b_un);
-
-  mpz_mul(c, a, b);
-
-  /* Marshal our result out of the enclave. */
-
-  mpz_set(*c_un, c);
 }
 
 void e_mpz_div(mpz_t *c_un, mpz_t *a_un, mpz_t *b_un) {
-  mpz_t a, b, c;
-
-  /* Marshal untrusted values into the enclave */
-
-  mpz_inits(a, b, c, NULL);
-
-  mpz_set(a, *a_un);
-  mpz_set(b, *b_un);
 
-  mpz_div(c, a, b);
-
-  /* Marshal our result out of the enclave */
-
-  mpz_set(*c_un, c);
 }
 
 void e_mpf_div(mpf_t *c_un, mpf_t *a_un, mpf_t *b_un) {
-  mpf_t a, b, c;
-
-  /* Marshal untrusted values into the enclave */
-
-  mpf_inits(a, b, c, NULL);
-
-  mpf_set(a, *a_un);
-  mpf_set(b, *b_un);
-
-  mpf_div(c, a, b);
-
-  /* Marshal our result out of the enclave */
 
-  mpf_set(*c_un, c);
 }
 
 /* Use the Chudnovsky equation to rapidly estimate pi */
@@ -174,7 +116,7 @@ void e_mpf_div(mpf_t *c_un, mpf_t *a_un, mpf_t *b_un) {
 mpz_t c3, c4, c5;
 int pi_init = 0;
 
-void encrypt_key(mpf_t *pi_un, int *err_status, char* key) {
+void encrypt_key(int *err_status, char* key, char* encrypted_key) {
 
   *err_status = -1;
 
@@ -186,96 +128,3 @@ void encrypt_key(mpf_t *pi_un, int *err_status, char* key) {
   *err_status = 0;
 }
 
-void e_calc_pi(mpf_t *pi, uint64_t digits) {
-  uint64_t k, n;
-  mp_bitcnt_t precision;
-  static double bits = log2(10);
-  mpz_t kf, kf3, threekf, sixkf, z1, z2, c4k, c5_3k;
-  mpf_t C, sum, div, f2;
-
-  n = (digits / DIGITS_PER_ITERATION) + 1;
-  precision = (digits * bits) + 1;
-
-  mpf_set_default_prec(precision);
-
-  /* Re-initialize the pi variable to use our new precision */
-
-  mpf_set_prec(*pi, precision);
-
-  char buf[32];
-  if (sgx_read_rand(buf, 32) != SGX_SUCCESS)
-    return;
-
-  uint32_t sealedLen = sgx_calc_sealed_data_size(0, 32);
-
-  uint8_t sealed_data[sealedLen];
-
-  if (sgx_seal_data(0, NULL, 32, buf, sealedLen, sealed_data) != SGX_SUCCESS)
-    return;
-
-  /*
-
-          426880 sqrt(10005)    inf (6k)! (13591409+545140134k)
-          ------------------- = SUM ---------------------------
-                   pi           k=0   (3k)!(k!)^3(-640320)^3k
-
-          C / pi = SUM (6k)! * (c3 + c4*k) / (3k)!(k!)^3(c5)^3k
-
-          C / pi = SUM f1 / f2
-
-          pi = C / sum
-
-  */
-
-  mpz_inits(sixkf, z1, z2, kf, kf3, threekf, c4k, c5_3k, NULL);
-  mpf_inits(C, sum, div, f2, NULL);
-
-  /* Calculate 'C' */
-
-  mpf_sqrt_ui(C, 10005);
-  mpf_mul_ui(C, C, 426880);
-
-  if (!pi_init) {
-    /* Constants needed in 'sum'. */
-
-    mpz_inits(c3, c4, c5, NULL);
-
-    mpz_set_ui(c3, 13591409);
-    mpz_set_ui(c4, 545140134);
-    mpz_set_si(c5, -640320);
-
-    pi_init = 1;
-  }
-
-  mpf_set_ui(sum, 0);
-
-  for (k = 0; k < n; ++k) {
-    /* Numerator */
-    mpz_fac_ui(sixkf, 6 * k);
-    mpz_mul_ui(c4k, c4, k);
-    mpz_add(c4k, c4k, c3);
-    mpz_mul(z1, c4k, sixkf);
-    mpf_set_z(div, z1);
-
-    /* Denominator */
-    mpz_fac_ui(threekf, 3 * k);
-    mpz_fac_ui(kf, k);
-    mpz_pow_ui(kf3, kf, 3);
-    mpz_mul(z2, threekf, kf3);
-    mpz_pow_ui(c5_3k, c5, 3 * k);
-    mpz_mul(z2, z2, c5_3k);
-
-    /* Divison */
-
-    mpf_set_z(f2, z2);
-    mpf_div(div, div, f2);
-
-    /* Sum */
-
-    mpf_add(sum, sum, div);
-  }
-
-  mpf_div(*pi, C, sum);
-
-  mpf_clears(div, sum, f2, NULL);
-}