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reset keys

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orignal 2020-01-22 21:42:30 -05:00
parent 34295adb05
commit 205e807b66
2 changed files with 15 additions and 7 deletions
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19
libi2pd/ECIESX25519AEADRatchetSession.cpp
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@ -38,17 +38,22 @@ namespace garlic
ECIESX25519AEADRatchetSession::ECIESX25519AEADRatchetSession (GarlicDestination * owner):
GarlicRoutingSession (owner, true)
{
// TODO : use precalculated hashes
static const char protocolName[41] = "Noise_IKelg2+hs2_25519_ChaChaPoly_SHA256"; // 40 bytes
SHA256 ((const uint8_t *)protocolName, 40, m_H);
memcpy (m_CK, m_H, 32);
SHA256 (m_H, 32, m_H);
ResetKeys ();
}
ECIESX25519AEADRatchetSession::~ECIESX25519AEADRatchetSession ()
{
}
void ECIESX25519AEADRatchetSession::ResetKeys ()
{
// TODO : use precalculated hashes
static const char protocolName[41] = "Noise_IKelg2+hs2_25519_ChaChaPoly_SHA256"; // 40 bytes
SHA256 ((const uint8_t *)protocolName, 40, m_H);
memcpy (m_CK, m_H, 32);
SHA256 (m_H, 32, m_H);
}
void ECIESX25519AEADRatchetSession::MixHash (const uint8_t * buf, size_t len)
{
SHA256_CTX ctx;
@ -175,6 +180,7 @@ namespace garlic
bool ECIESX25519AEADRatchetSession::NewOutgoingSessionMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen)
{
ResetKeys ();
// we are Alice, bpk is m_RemoteStaticKey
size_t offset = 0;
if (!GenerateEphemeralKeysAndEncode (out + offset))
@ -267,6 +273,7 @@ namespace garlic
bool ECIESX25519AEADRatchetSession::NewOutgoingSessionReply (const uint8_t * buf, size_t len, CloveHandler handleClove)
{
// TODO
LogPrint (eLogDebug, "Garlic: reply received");
return true;
}
@ -303,7 +310,7 @@ namespace garlic
std::vector<uint8_t> ECIESX25519AEADRatchetSession::CreatePayload (std::shared_ptr<const I2NPMessage> msg)
{
size_t payloadLen = 0;
if (payloadLen)
if (msg)
payloadLen += msg->GetPayloadLength () + 13;
auto leaseSet = CreateDatabaseStoreMsg (GetOwner ()->GetLeaseSet ());
if (leaseSet)

1
libi2pd/ECIESX25519AEADRatchetSession.h
View File

@ -72,6 +72,7 @@ namespace garlic
private:
void ResetKeys ();
void MixHash (const uint8_t * buf, size_t len);
bool GenerateEphemeralKeysAndEncode (uint8_t * buf); // buf is 32 bytes
uint64_t CreateNewSessionTag () const;