/*
* If PeerChallenge is NULL, one is generated and the PeerChallenge
* field of response is filled in. Call this way when generating a response.
* If PeerChallenge is supplied, it is copied into the PeerChallenge field.
* Call this way when verifying a response (or debugging).
* Do not call with PeerChallenge = response.
*
* The PeerChallenge field of response is then used for calculation of the
* Authenticator Response.
*/
static void ChapMS2(ppp_pcb *pcb, const u_char *rchallenge, const u_char *PeerChallenge,
const char *user, const char *secret, int secret_len, unsigned char *response,
u_char authResponse[], int authenticator) {
/* ARGSUSED */
LWIP_UNUSED_ARG(authenticator);
#if !MPPE_SUPPORT
LWIP_UNUSED_ARG(pcb);
#endif /* !MPPE_SUPPORT */
BZERO(response, MS_CHAP2_RESPONSE_LEN);
/* Generate the Peer-Challenge if requested, or copy it if supplied. */
if (!PeerChallenge)
magic_random_bytes(&response[MS_CHAP2_PEER_CHALLENGE], MS_CHAP2_PEER_CHAL_LEN);
else
MEMCPY(&response[MS_CHAP2_PEER_CHALLENGE], PeerChallenge,
MS_CHAP2_PEER_CHAL_LEN);
/* Generate the NT-Response */
ChapMS2_NT(rchallenge, &response[MS_CHAP2_PEER_CHALLENGE], user,
secret, secret_len, &response[MS_CHAP2_NTRESP]);
/* Generate the Authenticator Response. */
GenerateAuthenticatorResponsePlain(secret, secret_len,
&response[MS_CHAP2_NTRESP],
&response[MS_CHAP2_PEER_CHALLENGE],
rchallenge, user, authResponse);
#if MPPE_SUPPORT
SetMasterKeys(pcb, secret, secret_len,
&response[MS_CHAP2_NTRESP], authenticator);
#endif /* MPPE_SUPPORT */
}
/*
* If PeerChallenge is NULL, one is generated and response->PeerChallenge
* is filled in. Call this way when generating a response.
* If PeerChallenge is supplied, it is copied into response->PeerChallenge.
* Call this way when verifying a response (or debugging).
* Do not call with PeerChallenge = response->PeerChallenge.
*
* response->PeerChallenge is then used for calculation of the
* Authenticator Response.
*/
void ChapMS2(chap_state *cstate, u_char *rchallenge, u_char *PeerChallenge,
char *user, char *secret, int secret_len, MS_Chap2Response *response,
u_char authResponse[MS_AUTH_RESPONSE_LENGTH+1], int authenticator)
{
/* ARGSUSED */
u_char *p = response->PeerChallenge;
int i;
BZERO(response, sizeof(*response));
/* Generate the Peer-Challenge if requested, or copy it if supplied. */
if (!PeerChallenge)
{
for (i = 0; i < sizeof(response->PeerChallenge); i++)
{
*p++ = (u_char) (lrand48() & 0xff);
}
}
else
{
BCOPY(PeerChallenge, response->PeerChallenge, sizeof(response->PeerChallenge));
}
/* Generate the NT-Response */
ChapMS2_NT(rchallenge, response->PeerChallenge, user, secret, secret_len, response->NTResp);
/* Generate the Authenticator Response. */
GenerateAuthenticatorResponse(secret, secret_len, response->NTResp,
response->PeerChallenge, rchallenge, user, authResponse);
cstate->resp_length = MS_CHAP2_RESPONSE_LEN;
#ifdef MPPE
SetMasterKeys(secret, secret_len, response->NTResp, authenticator);
mppe_keys_set = 1;
#endif
}
CCryptBlowfish::CCryptBlowfish( unsigned int masterKey1, unsigned int masterKey2 )
{
SetMasterKeys( masterKey1, masterKey2 );
}
CCrypt12536::CCrypt12536( unsigned int masterKey1, unsigned int masterKey2 )
{
SetMasterKeys( masterKey1, masterKey2 );
}
