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Code Issues Releases Activity

send RouterInfo in SessionConfirmed

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This commit is contained in:
orignal 2018-06-15 14:56:03 -04:00
parent 706b976a28
commit e05110ff44
3 changed files with 18 additions and 15 deletions
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20
libi2pd/NTCP2.cpp
View File

@ -7,6 +7,7 @@
#include "I2PEndian.h"
#include "Crypto.h"
#include "Ed25519.h"
#include "RouterContext.h"
#include "NTCP2.h"
namespace i2p
@ -153,7 +154,7 @@ namespace transport
memset (options, 0, 16);
htobe16buf (options, 2); // ver
htobe16buf (options + 2, paddingLength); // padLen
htobe16buf (options + 4, 550); // m3p2Len TODO:
htobe16buf (options + 4, i2p::context.GetRouterInfo ().GetBufferLen () + 20); // m3p2Len (RI header + RI + MAC for now) TODO: implement options
// 2 bytes reserved
htobe32buf (options + 8, i2p::util::GetSecondsSinceEpoch ()); // tsA
// 4 bytes reserved
@ -255,24 +256,25 @@ namespace transport
SHA256 (h1.data (), paddingLength + 32, h);
}
// part1 48 bytes
uint8_t s[32]; // public static
CreateEphemeralKey (s); // TODO: take it from RouterContext
m_SessionConfirmedBuffer = new uint8_t[2048]; // TODO: actual size
uint8_t nonce[12];
memset (nonce, 0, 4); htole64buf (nonce + 4, 1); // set nonce to 1
i2p::crypto::AEADChaCha20Poly1305 (s, 32, h, 32, m_K, nonce, m_SessionConfirmedBuffer, 48, true); // encrypt
i2p::crypto::AEADChaCha20Poly1305 (i2p::context.GetNTCP2StaticPublicKey (), 32, h, 32, m_K, nonce, m_SessionConfirmedBuffer, 48, true); // encrypt
// part 2
// update AD again
memcpy (h + 32, m_SessionConfirmedBuffer, 48);
SHA256 (h, 80, m_H);
size_t m3p2Len = 550; // TODO: actual size
uint8_t buf[550];
memset (buf, 0, m3p2Len - 16); // TODO: fill
size_t m3p2Len = i2p::context.GetRouterInfo ().GetBufferLen () + 20;
std::vector<uint8_t> buf(m3p2Len - 16);
buf[0] = 2; // block
htobe16buf (buf.data () + 1, i2p::context.GetRouterInfo ().GetBufferLen () + 1); // flag + RI
buf[3] = 0; // flag
memcpy (buf.data () + 4, i2p::context.GetRouterInfo ().GetBuffer (), i2p::context.GetRouterInfo ().GetBufferLen ());
uint8_t key[32];
KeyDerivationFunction3 (m_ExpandedPrivateKey, key); // TODO: take it from RouterContext
KeyDerivationFunction3 (i2p::context.GetNTCP2StaticPrivateKey (), key);
memset (nonce, 0, 12); // set nonce to 0 again
i2p::crypto::AEADChaCha20Poly1305 (buf, m3p2Len - 16, m_H, 32, key, nonce, m_SessionConfirmedBuffer + 48, m3p2Len, true); // encrypt
i2p::crypto::AEADChaCha20Poly1305 (buf.data (), m3p2Len - 16, m_H, 32, key, nonce, m_SessionConfirmedBuffer + 48, m3p2Len, true); // encrypt
// send message
boost::asio::async_write (m_Socket, boost::asio::buffer (m_SessionConfirmedBuffer, m3p2Len + 48), boost::asio::transfer_all (),

11
libi2pd/RouterContext.cpp
View File

@ -84,11 +84,6 @@ namespace i2p
routerInfo.AddSSUAddress (host.c_str(), port, routerInfo.GetIdentHash ());
routerInfo.AddNTCPAddress (host.c_str(), port);
}
if (ntcp2)
{
NewNTCP2Keys ();
routerInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv);
}
routerInfo.SetCaps (i2p::data::RouterInfo::eReachable |
i2p::data::RouterInfo::eSSUTesting | i2p::data::RouterInfo::eSSUIntroducer); // LR, BC
@ -97,6 +92,12 @@ namespace i2p
routerInfo.CreateBuffer (m_Keys);
m_RouterInfo.SetRouterIdentity (GetIdentity ());
m_RouterInfo.Update (routerInfo.GetBuffer (), routerInfo.GetBufferLen ());
if (ntcp2)
{
NewNTCP2Keys ();
m_RouterInfo.AddNTCP2Address (m_NTCP2Keys->staticPublicKey, m_NTCP2Keys->iv);
}
}
void RouterContext::UpdateRouterInfo ()

2
libi2pd/RouterInfo.cpp
View File

@ -699,7 +699,7 @@ namespace data
addr->date = 0;
addr->ntcp2.reset (new NTCP2Ext ());
memcpy (addr->ntcp2->staticKey, staticKey, 32);
memcpy (addr->ntcp2->iv, iv, 32);
memcpy (addr->ntcp2->iv, iv, 16);
m_Addresses->push_back(std::move(addr));
}