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Do not use monotonic time for AKA sequence numbers, it has an undefined starting point

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This commit is contained in:
Martin Willi
2009-10-09 13:02:20 +02:00
parent 655728621b
commit 424ddf801c
1 changed files with 4 additions and 6 deletions
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src/charon/plugins/eap_aka_3gpp2/eap_aka_3gpp2_provider.c
+4 -6
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@@ -75,14 +75,12 @@ void eap_aka_3gpp2_get_sqn(char sqn[AKA_SQN_LEN], int offset)
{ {
timeval_t time; timeval_t time;
time_monotonic(&time); gettimeofday(&time, NULL);
/* set sqn to an integer containing seconds followed by most /* set sqn to an integer containing 4 bytes seconds + 2 bytes usecs */
* significant useconds */
time.tv_sec = htonl(time.tv_sec + offset); time.tv_sec = htonl(time.tv_sec + offset);
/* usec's are never larger than 0x000f423f, so we shift the 12 first bits */ /* usec's are never larger than 0x000f423f, so we shift the 12 first bits */
time.tv_usec <<= 12; time.tv_usec = htonl(time.tv_usec << 12);
time.tv_usec = htonl(time.tv_usec); memcpy(sqn, (char*)&time.tv_sec + sizeof(time_t) - 4, 4);
memcpy(sqn, &time.tv_sec, 4);
memcpy(sqn + 4, &time.tv_usec, 2); memcpy(sqn + 4, &time.tv_usec, 2);
} }