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gmp: Fix compatibility with older libgmp releases

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Older releases don't have mpz_powm_sec() and mpz_inits() yet.

Fixes #2505.
This commit is contained in:
Tobias Brunner
2018-01-31 10:53:55 +01:00
parent 432358cf49
commit 4a84fb07ca
1 changed files with 7 additions and 2 deletions
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src/libstrongswan/plugins/gmp/gmp_rsa_private_key.c
+7 -2
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@@ -936,7 +936,12 @@ static bool calculate_pq(private_gmp_rsa_private_key_t *this)
bool success = FALSE;
gmp_randinit_default(rstate);
mpz_inits(k, r, g, y, n1, x, NULL);
mpz_init(k);
mpz_init(r);
mpz_init(g);
mpz_init(y);
mpz_init(n1);
mpz_init(x);
/* k = (d * e) - 1 */
mpz_mul(k, *this->d, this->e);
mpz_sub_ui(k, k, 1);
@@ -956,7 +961,7 @@ static bool calculate_pq(private_gmp_rsa_private_key_t *this)
{ /* generate random integer g in [0, n-1] */
mpz_urandomm(g, rstate, this->n);
/* y = g^r mod n */
mpz_powm_sec(y, g, r, this->n);
mpz_powm(y, g, r, this->n);
/* try again if y == 1 or y == n-1 */
if (mpz_cmp_ui(y, 1) == 0 || mpz_cmp(y, n1) == 0)
{