diff options
Diffstat (limited to 'source4/libcli/util')
| -rw-r--r-- | source4/libcli/util/credentials.c | 194 |
1 files changed, 0 insertions, 194 deletions
diff --git a/source4/libcli/util/credentials.c b/source4/libcli/util/credentials.c index 0d521bae8a..2c8f7e7423 100644 --- a/source4/libcli/util/credentials.c +++ b/source4/libcli/util/credentials.c @@ -19,197 +19,3 @@ */ #include "includes.h" - -/**************************************************************************** -represent a credential as a string -****************************************************************************/ -char *credstr(const uchar *cred) -{ - static fstring buf; - slprintf(buf, sizeof(buf) - 1, "%02X%02X%02X%02X%02X%02X%02X%02X", - cred[0], cred[1], cred[2], cred[3], - cred[4], cred[5], cred[6], cred[7]); - return buf; -} - - -/**************************************************************************** - setup the session key. -Input: 8 byte challenge block - 8 byte server challenge block - 16 byte md4 encrypted password -Output: - 8 byte session key -****************************************************************************/ -void cred_session_key(const DOM_CHAL *clnt_chal, const DOM_CHAL *srv_chal, const uchar *pass, - uchar session_key[8]) -{ - uint32 sum[2]; - unsigned char sum2[8]; - - sum[0] = IVAL(clnt_chal->data, 0) + IVAL(srv_chal->data, 0); - sum[1] = IVAL(clnt_chal->data, 4) + IVAL(srv_chal->data, 4); - - SIVAL(sum2,0,sum[0]); - SIVAL(sum2,4,sum[1]); - - cred_hash1(session_key, sum2, pass); - - /* debug output */ - DEBUG(4,("cred_session_key\n")); - - DEBUG(5,(" clnt_chal: %s\n", credstr(clnt_chal->data))); - DEBUG(5,(" srv_chal : %s\n", credstr(srv_chal->data))); - DEBUG(5,(" clnt+srv : %s\n", credstr(sum2))); - DEBUG(5,(" sess_key : %s\n", credstr(session_key))); -} - - -/**************************************************************************** -create a credential - -Input: - 8 byte sesssion key - 8 byte stored credential - 4 byte timestamp - -Output: - 8 byte credential -****************************************************************************/ -void cred_create(uchar session_key[8], DOM_CHAL *stor_cred, UTIME timestamp, - DOM_CHAL *cred) -{ - DOM_CHAL time_cred; - - SIVAL(time_cred.data, 0, IVAL(stor_cred->data, 0) + timestamp.time); - SIVAL(time_cred.data, 4, IVAL(stor_cred->data, 4)); - - cred_hash2(cred->data, time_cred.data, session_key); - - /* debug output*/ - DEBUG(4,("cred_create\n")); - - DEBUG(5,(" sess_key : %s\n", credstr(session_key))); - DEBUG(5,(" stor_cred: %s\n", credstr(stor_cred->data))); - DEBUG(5,(" timestamp: %x\n" , timestamp.time)); - DEBUG(5,(" timecred : %s\n", credstr(time_cred.data))); - DEBUG(5,(" calc_cred: %s\n", credstr(cred->data))); -} - - -/**************************************************************************** - check a supplied credential - -Input: - 8 byte received credential - 8 byte sesssion key - 8 byte stored credential - 4 byte timestamp - -Output: - returns 1 if computed credential matches received credential - returns 0 otherwise -****************************************************************************/ -int cred_assert(DOM_CHAL *cred, uchar session_key[8], DOM_CHAL *stored_cred, - UTIME timestamp) -{ - DOM_CHAL cred2; - - cred_create(session_key, stored_cred, timestamp, &cred2); - - /* debug output*/ - DEBUG(4,("cred_assert\n")); - - DEBUG(5,(" challenge : %s\n", credstr(cred->data))); - DEBUG(5,(" calculated: %s\n", credstr(cred2.data))); - - if (memcmp(cred->data, cred2.data, 8) == 0) - { - DEBUG(5, ("credentials check ok\n")); - return True; - } - else - { - DEBUG(5, ("credentials check wrong\n")); - return False; - } -} - - -/**************************************************************************** - checks credentials; generates next step in the credential chain -****************************************************************************/ -BOOL clnt_deal_with_creds(uchar sess_key[8], - DOM_CRED *sto_clnt_cred, DOM_CRED *rcv_srv_cred) -{ - UTIME new_clnt_time; - uint32 new_cred; - - DEBUG(5,("clnt_deal_with_creds: %d\n", __LINE__)); - - /* increment client time by one second */ - new_clnt_time.time = sto_clnt_cred->timestamp.time + 1; - - /* check that the received server credentials are valid */ - if (!cred_assert(&rcv_srv_cred->challenge, sess_key, - &sto_clnt_cred->challenge, new_clnt_time)) - { - return False; - } - - /* first 4 bytes of the new seed is old client 4 bytes + clnt time + 1 */ - new_cred = IVAL(sto_clnt_cred->challenge.data, 0); - new_cred += new_clnt_time.time; - - /* store new seed in client credentials */ - SIVAL(sto_clnt_cred->challenge.data, 0, new_cred); - - DEBUG(5,(" new clnt cred: %s\n", credstr(sto_clnt_cred->challenge.data))); - return True; -} - - -/**************************************************************************** - checks credentials; generates next step in the credential chain -****************************************************************************/ -BOOL deal_with_creds(uchar sess_key[8], - DOM_CRED *sto_clnt_cred, - DOM_CRED *rcv_clnt_cred, DOM_CRED *rtn_srv_cred) -{ - UTIME new_clnt_time; - uint32 new_cred; - - DEBUG(5,("deal_with_creds: %d\n", __LINE__)); - - /* check that the received client credentials are valid */ - if (!cred_assert(&rcv_clnt_cred->challenge, sess_key, - &sto_clnt_cred->challenge, rcv_clnt_cred->timestamp)) - { - return False; - } - - /* increment client time by one second */ - new_clnt_time.time = rcv_clnt_cred->timestamp.time + 1; - - /* first 4 bytes of the new seed is old client 4 bytes + clnt time + 1 */ - new_cred = IVAL(sto_clnt_cred->challenge.data, 0); - new_cred += new_clnt_time.time; - - DEBUG(5,("deal_with_creds: new_cred[0]=%x\n", new_cred)); - - /* doesn't matter that server time is 0 */ - rtn_srv_cred->timestamp.time = 0; - - DEBUG(5,("deal_with_creds: new_clnt_time=%x\n", new_clnt_time.time)); - - /* create return credentials for inclusion in the reply */ - cred_create(sess_key, &sto_clnt_cred->challenge, new_clnt_time, - &rtn_srv_cred->challenge); - - DEBUG(5,("deal_with_creds: clnt_cred=%s\n", credstr(sto_clnt_cred->challenge.data))); - - /* store new seed in client credentials */ - SIVAL(sto_clnt_cred->challenge.data, 0, new_cred); - - return True; -} |