Some 'const's for BNs.

[openssl.git] / crypto / bn / bn_prime.c

diff --git a/crypto/bn/bn_prime.c b/crypto/bn/bn_prime.c
index efc053e..0f07c22 100644 (file)
--- a/crypto/bn/bn_prime.c
+++ b/crypto/bn/bn_prime.c
@@ -121,8 +121,8 @@
  */
 #include "bn_prime.h"
 
-static int witness(BIGNUM *w, BIGNUM *a, BIGNUM *a1, BIGNUM *a1_odd, int k,
-       BN_CTX *ctx, BN_MONT_CTX *mont);
+static int witness(BIGNUM *w, const BIGNUM *a, const BIGNUM *a1,
+       const BIGNUM *a1_odd, int k, BN_CTX *ctx, BN_MONT_CTX *mont);
 static int probable_prime(BIGNUM *rnd, int bits);
 static int probable_prime_dh(BIGNUM *rnd, int bits,
        BIGNUM *add, BIGNUM *rem, BN_CTX *ctx);
@@ -223,7 +223,7 @@ int BN_is_prime_fasttest(const BIGNUM *a, int checks,
        BN_CTX *ctx = NULL;
        BIGNUM *A1, *A1_odd, *check; /* taken from ctx */
        BN_MONT_CTX *mont = NULL;
-       BIGNUM *A;
+       const BIGNUM *A;
 
        if (checks == BN_prime_checks)
                checks = BN_prime_checks_for_size(BN_num_bits(a));
@@ -247,9 +247,10 @@ int BN_is_prime_fasttest(const BIGNUM *a, int checks,
        /* A := abs(a) */
        if (a->neg)
                {
-               A = &(ctx->bn[ctx->tos++]);
-               BN_copy(A, a);
-               A->neg = 0;
+               BIGNUM *t = &(ctx->bn[ctx->tos++]);
+               BN_copy(t, a);
+               t->neg = 0;
+               A = t;
                }
        else
                A = a;
@@ -318,8 +319,8 @@ err:
        return(ret);
        }
 
-static int witness(BIGNUM *w, BIGNUM *a, BIGNUM *a1, BIGNUM *a1_odd, int k,
-       BN_CTX *ctx, BN_MONT_CTX *mont)
+static int witness(BIGNUM *w, const BIGNUM *a, const BIGNUM *a1,
+       const BIGNUM *a1_odd, int k, BN_CTX *ctx, BN_MONT_CTX *mont)
        {
        if (!BN_mod_exp_mont(w, w, a1_odd, a, ctx, mont)) /* w := w^a1_odd mod a */
                return -1;