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add missing check for BN_mod_inverse
[openssl.git]
/
crypto
/
rsa
/
rsa_x931g.c
diff --git
a/crypto/rsa/rsa_x931g.c
b/crypto/rsa/rsa_x931g.c
index bc03875f3be3527d91c61c57040c6d69b47a099e..160177721c852255a9589d639aa167a78dac1117 100644
(file)
--- a/
crypto/rsa/rsa_x931g.c
+++ b/
crypto/rsa/rsa_x931g.c
@@
-128,6
+128,8
@@
int RSA_X931_derive_ex(RSA *rsa, BIGNUM *p1, BIGNUM *p2, BIGNUM *q1,
/* calculate inverse of q mod p */
rsa->iqmp = BN_mod_inverse(NULL, rsa->q, rsa->p, ctx2);
+ if (rsa->iqmp == NULL)
+ goto err;
ret = 1;
err: