| author | Michael Krelin <hacker@klever.net> | 2007-06-18 22:02:02 (UTC) |
|---|---|---|
| committer | Michael Krelin <hacker@klever.net> | 2007-06-18 22:02:02 (UTC) |
| commit | 9af3fae2d53a34003af405b68923061c01584bc6 (patch) (side-by-side diff) | |
| tree | dd63e5bc3515c47ab074c564c51879b7c9652ab2 /lib/server.cc | |
| parent | 3b404dd029a2aba05efc2edadcc7f67c59746cf7 (diff) | |
| download | libopkele-9af3fae2d53a34003af405b68923061c01584bc6.zip libopkele-9af3fae2d53a34003af405b68923061c01584bc6.tar.gz libopkele-9af3fae2d53a34003af405b68923061c01584bc6.tar.bz2 | |
reworked zero-padding machinery and added one more instance of zero-padding
| -rw-r--r-- | lib/server.cc | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/lib/server.cc b/lib/server.cc index e81d4b6..8db97be 100644 --- a/lib/server.cc +++ b/lib/server.cc @@ -34,14 +34,15 @@ namespace opkele { dh->g = util::dec_to_bignum(data::_default_g); if(!DH_generate_key(dh)) throw exception_openssl(OPKELE_CP_ "failed to DH_generate_key()"); - vector<unsigned char> ck(DH_size(dh)); + vector<unsigned char> ck(DH_size(dh)+1); + unsigned char *ckptr = &(ck.front())+1; int cklen = DH_compute_key(&(ck.front()),c_pub,dh); if(cklen<0) throw exception_openssl(OPKELE_CP_ "failed to DH_compute_key()"); - ck.resize(cklen); - // OpenID algorithm requires extra zero in case of set bit here - if(ck[0]&0x80) ck.insert(ck.begin(),1,0); - SHA1(&(ck.front()),ck.size(),key_sha1); + if(cklen && (*ckptr)&0x80) { + (*(--ckptr)) = 0; ++cklen; + } + SHA1(ckptr,cklen,key_sha1); st = sess_dh_sha1; } assoc_t assoc = alloc_assoc(mode_associate); |