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request and process encrypted LeaseSet

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orignal 2014-07-08 07:45:16 -04:00
parent 38115b7dda
commit 3e25759ada
5 changed files with 19 additions and 7 deletions
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16
I2NPProtocol.cpp
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@ -95,7 +95,8 @@ namespace i2p
}
I2NPMessage * CreateDatabaseLookupMsg (const uint8_t * key, const uint8_t * from,
uint32_t replyTunnelID, bool exploratory, std::set<i2p::data::IdentHash> * excludedPeers)
uint32_t replyTunnelID, bool exploratory, std::set<i2p::data::IdentHash> * excludedPeers,
bool encryption)
{
I2NPMessage * m = NewI2NPMessage ();
uint8_t * buf = m->GetPayload ();
@ -105,12 +106,13 @@ namespace i2p
buf += 32;
if (replyTunnelID)
{
*buf = 0x01; // set delivery flag
*buf = encryption ? 0x03: 0x01; // set delivery flag
*(uint32_t *)(buf+1) = htobe32 (replyTunnelID);
buf += 5;
}
else
{
encryption = false; // encryption can we set for tunnels only
*buf = 0; // flag
buf++;
}
@ -143,6 +145,16 @@ namespace i2p
buf += 2;
}
}
if (encryption)
{
// session key and tag for reply
auto& rnd = i2p::context.GetRandomNumberGenerator ();
rnd.GenerateBlock (buf, 32); // key
buf[32] = 1; // 1 tag
rnd.GenerateBlock (buf + 33, 32); // tag
i2p::garlic::routing.AddSessionKey (buf, buf + 33); // introduce new key-tag to garlic engine
buf += 65;
}
m->len += (buf - m->GetPayload ());
FillI2NPMessageHeader (m, eI2NPDatabaseLookup);
return m;