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lookup ECIESX25519AEADRatchet session by static key

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orignal 2020-01-16 15:45:22 -05:00
parent dc9da69509
commit b6800dd125
6 changed files with 48 additions and 25 deletions
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55
libi2pd/Garlic.cpp
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@ -655,21 +655,35 @@ namespace garlic
std::shared_ptr<GarlicRoutingSession> GarlicDestination::GetRoutingSession (
std::shared_ptr<const i2p::data::RoutingDestination> destination, bool attachLeaseSet)
{
ElGamalAESSessionPtr session;
{
std::unique_lock<std::mutex> l(m_SessionsMutex);
auto it = m_Sessions.find (destination->GetIdentHash ());
if (it != m_Sessions.end ())
session = it->second;
}
if (!session)
{
session = std::make_shared<ElGamalAESSession> (this, destination,
attachLeaseSet ? m_NumTags : 4, attachLeaseSet); // specified num tags for connections and 4 for LS requests
std::unique_lock<std::mutex> l(m_SessionsMutex);
m_Sessions[destination->GetIdentHash ()] = session;
}
return session;
if (destination->GetEncryptionType () == i2p::data::CRYPTO_KEY_TYPE_ECIES_X25519_AEAD_RARCHET)
{
ECIESX25519AEADRatchetSessionPtr session;
uint8_t staticKey[32];
destination->Encrypt (nullptr, staticKey, nullptr); // we are supposed to get static key
auto it = m_ECIESx25519Sessions.find (staticKey);
if (it != m_ECIESx25519Sessions.end ())
session = it->second;
// TODO: Alice
return session;
}
else
{
ElGamalAESSessionPtr session;
{
std::unique_lock<std::mutex> l(m_SessionsMutex);
auto it = m_Sessions.find (destination->GetIdentHash ());
if (it != m_Sessions.end ())
session = it->second;
}
if (!session)
{
session = std::make_shared<ElGamalAESSession> (this, destination,
attachLeaseSet ? m_NumTags : 4, attachLeaseSet); // specified num tags for connections and 4 for LS requests
std::unique_lock<std::mutex> l(m_SessionsMutex);
m_Sessions[destination->GetIdentHash ()] = session;
}
return session;
}
}
void GarlicDestination::CleanupExpiredTags ()
@ -841,9 +855,14 @@ namespace garlic
void GarlicDestination::HandleECIESx25519 (const uint8_t * buf, size_t len)
{
ECIESX25519AEADRatchetSession session (this);
session.NewIncomingSession (buf, len, std::bind (&GarlicDestination::HandleECIESx25519GarlicClove,
this, std::placeholders::_1, std::placeholders::_2));
auto session = std::make_shared<ECIESX25519AEADRatchetSession> (this);
if (session->NewIncomingSession (buf, len, std::bind (&GarlicDestination::HandleECIESx25519GarlicClove,
this, std::placeholders::_1, std::placeholders::_2)))
{
m_ECIESx25519Sessions.emplace (session->GetStaticKey (), session);
}
else
LogPrint (eLogError, "Garlic: can't decrypt ECIES-X25519-AEAD-Ratchet new session");
}
void GarlicDestination::HandleECIESx25519GarlicClove (const uint8_t * buf, size_t len)