diff options
Diffstat (limited to 'crypto/bn/bn_x931p.c')
| -rw-r--r-- | crypto/bn/bn_x931p.c | 6 |
1 files changed, 4 insertions, 2 deletions
diff --git a/crypto/bn/bn_x931p.c b/crypto/bn/bn_x931p.c index f444af3..e40241f 100644 --- a/crypto/bn/bn_x931p.c +++ b/crypto/bn/bn_x931p.c @@ -4,7 +4,7 @@ * 2005. */ /* ==================================================================== - * Copyright (c) 2005 The OpenSSL Project. All rights reserved. + * Copyright (c) 2005-2018 The OpenSSL Project. All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions @@ -223,8 +223,10 @@ int BN_X931_generate_Xpq(BIGNUM *Xp, BIGNUM *Xq, int nbits, BN_CTX *ctx) for (i = 0; i < 1000; i++) { if (!BN_rand(Xq, nbits, 1, 0)) goto err; + /* Check that |Xp - Xq| > 2^(nbits - 100) */ - BN_sub(t, Xp, Xq); + if (!BN_sub(t, Xp, Xq)) + goto err; if (BN_num_bits(t) > (nbits - 100)) break; } |