diff options
Diffstat (limited to 'crypto/bn/bn_mod.c')
| -rw-r--r-- | crypto/bn/bn_mod.c | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/crypto/bn/bn_mod.c b/crypto/bn/bn_mod.c index 982e0e992c..d7c2f4bd5b 100644 --- a/crypto/bn/bn_mod.c +++ b/crypto/bn/bn_mod.c @@ -17,6 +17,11 @@ int BN_nnmod(BIGNUM *r, const BIGNUM *m, const BIGNUM *d, BN_CTX *ctx) * always holds) */ + if (r == d) { + ERR_raise(ERR_LIB_BN, ERR_R_PASSED_INVALID_ARGUMENT); + return 0; + } + if (!(BN_mod(r, m, d, ctx))) return 0; if (!r->neg) @@ -184,6 +189,11 @@ int bn_mod_sub_fixed_top(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, int BN_mod_sub_quick(BIGNUM *r, const BIGNUM *a, const BIGNUM *b, const BIGNUM *m) { + if (r == m) { + ERR_raise(ERR_LIB_BN, ERR_R_PASSED_INVALID_ARGUMENT); + return 0; + } + if (!BN_sub(r, a, b)) return 0; if (r->neg) |