diff options
Diffstat (limited to 'jpake.c')
-rw-r--r-- | jpake.c | 8 |
1 files changed, 7 insertions, 1 deletions
@@ -1,4 +1,4 @@ -/* $OpenBSD: jpake.c,v 1.4 2010/07/13 23:13:16 djm Exp $ */ +/* $OpenBSD: jpake.c,v 1.5 2010/09/20 04:50:53 djm Exp $ */ /* * Copyright (c) 2008 Damien Miller. All rights reserved. * @@ -257,8 +257,12 @@ jpake_step2(struct modp_group *grp, BIGNUM *s, /* Validate peer's step 1 values */ if (BN_cmp(theirpub1, BN_value_one()) <= 0) fatal("%s: theirpub1 <= 1", __func__); + if (BN_cmp(theirpub1, grp->p) >= 0) + fatal("%s: theirpub1 >= p", __func__); if (BN_cmp(theirpub2, BN_value_one()) <= 0) fatal("%s: theirpub2 <= 1", __func__); + if (BN_cmp(theirpub2, grp->p) >= 0) + fatal("%s: theirpub2 >= p", __func__); if (schnorr_verify_buf(grp->p, grp->q, grp->g, theirpub1, theirid, theirid_len, theirpub1_proof, theirpub1_proof_len) != 1) @@ -363,6 +367,8 @@ jpake_key_confirm(struct modp_group *grp, BIGNUM *s, BIGNUM *step2_val, /* Validate step 2 values */ if (BN_cmp(step2_val, BN_value_one()) <= 0) fatal("%s: step2_val <= 1", __func__); + if (BN_cmp(step2_val, grp->p) >= 0) + fatal("%s: step2_val >= p", __func__); /* * theirpriv2_s_proof is calculated with a different generator: |