diff options
Diffstat (limited to 'src/crypto/fipsmodule/bn/exponentiation.c')
| -rw-r--r-- | src/crypto/fipsmodule/bn/exponentiation.c | 7 |
1 files changed, 4 insertions, 3 deletions
diff --git a/src/crypto/fipsmodule/bn/exponentiation.c b/src/crypto/fipsmodule/bn/exponentiation.c index 9e408113..8d4a5c8b 100644 --- a/src/crypto/fipsmodule/bn/exponentiation.c +++ b/src/crypto/fipsmodule/bn/exponentiation.c @@ -614,10 +614,9 @@ int BN_mod_exp_mont(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p, BN_MONT_CTX *new_mont = NULL; BN_CTX_start(ctx); - BIGNUM *d = BN_CTX_get(ctx); BIGNUM *r = BN_CTX_get(ctx); val[0] = BN_CTX_get(ctx); - if (!d || !r || !val[0]) { + if (r == NULL || val[0] == NULL) { goto err; } @@ -639,7 +638,9 @@ int BN_mod_exp_mont(BIGNUM *rr, const BIGNUM *a, const BIGNUM *p, goto err; } if (window > 1) { - if (!BN_mod_mul_montgomery(d, val[0], val[0], mont, ctx)) { + BIGNUM *d = BN_CTX_get(ctx); + if (d == NULL || + !BN_mod_mul_montgomery(d, val[0], val[0], mont, ctx)) { goto err; } for (int i = 1; i < 1 << (window - 1); i++) { |