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kademlia

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orignal 2014-01-03 21:24:20 -05:00
parent 4f9a977022
commit 4f1f08b805
6 changed files with 78 additions and 0 deletions
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27
Identity.cpp
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@ -1,3 +1,5 @@
#include <time.h>
#include <stdio.h>
#include <cryptopp/sha.h>
#include <cryptopp/osrng.h>
#include <cryptopp/dh.h>
@ -43,5 +45,30 @@ namespace data
return keys;
}
RoutingKey CreateRoutingKey (const IdentHash& ident)
{
uint8_t buf[41]; // ident + yyyymmdd
memcpy (buf, (const uint8_t *)ident, 32);
time_t t = time (nullptr);
struct tm tm;
gmtime_r (&t, &tm);
sprintf ((char *)(buf + 32),"%4i%2i%2i", tm.tm_year, tm.tm_mon, tm.tm_mday);
RoutingKey key;
CryptoPP::SHA256().CalculateDigest(key.hash, buf, 40);
return key;
}
XORMetric operator^(const RoutingKey& key1, const RoutingKey& key2)
{
// TODO: implementation depends on CPU
XORMetric m;
((uint64_t *)m.metric)[0] = ((uint64_t *)key1.hash)[0] ^ ((uint64_t *)key2.hash)[0];
((uint64_t *)m.metric)[1] = ((uint64_t *)key1.hash)[1] ^ ((uint64_t *)key2.hash)[1];
((uint64_t *)m.metric)[2] = ((uint64_t *)key1.hash)[2] ^ ((uint64_t *)key2.hash)[2];
((uint64_t *)m.metric)[3] = ((uint64_t *)key1.hash)[3] ^ ((uint64_t *)key2.hash)[3];
return m;
}
}
}