usr.sbin/ppp/mppe.c

243   struct mppe_state *mip = (struct mppe_state *)v;
268   if (!flushed && mip->stateless) {
275   if (mip->stateless) {
277     while (prefix != mip->cohnum) {
279       MPPEKeyChange(mip);
281        * mip->cohnum contains what we received last time in stateless
284       mip->cohnum++;
285       mip->cohnum &= ~MPPE_HEADER_BITMASK;
295           (mip->cohnum >> MPPE_HEADER_FLAGSHIFT);
301         MPPEKeyChange(mip);
303       mip->flushrequired = 0;
304       mip->cohnum = prefix;
308     if (mip->flushrequired) {
321     if (prefix != mip->cohnum) {
329                  prefix, mip->cohnum);
332       mip->flushrequired = 1;
339       MPPEKeyChange(mip);
345      * mip->cohnum contains what we expect to receive next time in stateful
348     mip->cohnum++;
349     mip->cohnum &= ~MPPE_HEADER_BITMASK;
354     RC4_set_key(&mip->rc4key, mip->keylen, mip->sesskey);
358   RC4(&mip->rc4key, 2, (char *)proto, (char *)proto);
363   RC4(&mip->rc4key, len, rp, rp);
681   struct mppe_state *mip;
688   if ((mip = MPPE_InitState(o)) == NULL) {
693   log_Printf(LogDEBUG, "MPPE: InitInput: %d-bits\n", mip->keybits);
697     if (mip->keylen > bundle->radius.mppe.recvkeylen)
698       mip->keylen = bundle->radius.mppe.recvkeylen;
699     if (mip->keylen > sizeof mip->mastkey)
700       mip->keylen = sizeof mip->mastkey;
701     memcpy(mip->mastkey, bundle->radius.mppe.recvkey, mip->keylen);
704     GetAsymetricStartKey(MPPE_MasterKey, mip->mastkey, mip->keylen, 0,
707   GetNewKeyFromSHA(mip->mastkey, mip->mastkey, mip->keylen, mip->sesskey);
709   MPPEReduceSessionKey(mip);
713   if (!mip->stateless) {
719                mip->cohnum);
720     RC4_set_key(&mip->rc4key, mip->keylen, mip->sesskey);
727     log_Printf(LogDEBUG, "MPPEInitInput: Key changed [%d]\n", mip->cohnum);
728     MPPEKeyChange(mip);
731   return mip;