diff options
Diffstat (limited to 'src/crypto/dsa/dsa_impl.c')
| -rw-r--r-- | src/crypto/dsa/dsa_impl.c | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/src/crypto/dsa/dsa_impl.c b/src/crypto/dsa/dsa_impl.c index b7e1fd8..2ab8ba8 100644 --- a/src/crypto/dsa/dsa_impl.c +++ b/src/crypto/dsa/dsa_impl.c @@ -501,12 +501,16 @@ static int paramgen(DSA *ret, unsigned bits, const uint8_t *seed_in, } ctx = BN_CTX_new(); + if (ctx == NULL) { + goto err; + } + BN_CTX_start(ctx); + mont = BN_MONT_CTX_new(); - if (ctx == NULL || mont == NULL) { + if (mont == NULL) { goto err; } - BN_CTX_start(ctx); r0 = BN_CTX_get(ctx); g = BN_CTX_get(ctx); W = BN_CTX_get(ctx); @@ -516,7 +520,7 @@ static int paramgen(DSA *ret, unsigned bits, const uint8_t *seed_in, p = BN_CTX_get(ctx); test = BN_CTX_get(ctx); - if (!BN_lshift(test, BN_value_one(), bits - 1)) { + if (test == NULL || !BN_lshift(test, BN_value_one(), bits - 1)) { goto err; } |