PurpleI2P/i2pd
1
0
Fork 0
mirror of https://github.com/PurpleI2P/i2pd.git synced 2025-01-22 08:14:15 +00:00
Code Issues Releases Activity

store previous reverse key

Browse Source
This commit is contained in:
orignal 2020-04-27 09:35:02 -04:00
parent e6fdf5ad8d
commit 142a138cfc
1 changed files with 12 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

23
libi2pd/ECIESX25519AEADRatchetSession.cpp
View File

@ -255,12 +255,12 @@ namespace garlic
uint8_t flag = buf[0]; buf++; // flag
if (flag & ECIESX25519_NEXT_KEY_REVERSE_KEY_FLAG)
{
if (!m_NextSendRatchet) return;
if (!m_SendForwardKey || !m_NextSendRatchet) return;
uint16_t keyID = bufbe16toh (buf); buf += 2; // keyID
if (((!m_NextSendRatchet->newKey || !m_NextSendRatchet->keyID) && keyID == m_NextSendRatchet->keyID) ||
(m_NextSendRatchet->newKey && keyID == m_NextSendRatchet->keyID -1))
{
if (flag & ECIESX25519_NEXT_KEY_REQUEST_REVERSE_KEY_FLAG)
if (flag & ECIESX25519_NEXT_KEY_KEY_PRESENT_FLAG)
memcpy (m_NextSendRatchet->remote, buf, 32);
uint8_t sharedSecret[32], tagsetKey[32];
m_NextSendRatchet->key.Agree (m_NextSendRatchet->remote, sharedSecret);
@ -318,22 +318,23 @@ namespace garlic
void ECIESX25519AEADRatchetSession::NewNextSendRatchet ()
{
auto newTagset = new DHRatchet ();
if (m_NextSendRatchet)
{
newTagset->keyID = m_NextSendRatchet->keyID;
if (!newTagset->newKey || !newTagset->keyID)
if (!m_NextSendRatchet->newKey || !m_NextSendRatchet->keyID)
{
newTagset->keyID++;
newTagset->newKey = true;
m_NextSendRatchet->keyID++;
m_NextSendRatchet->newKey = true;
}
else
newTagset->newKey = false;
m_NextSendRatchet->newKey = false;
}
if (newTagset->newKey)
newTagset->key.GenerateKeys ();
m_NextSendRatchet.reset (newTagset);
else
m_NextSendRatchet.reset (new DHRatchet ());
if (m_NextSendRatchet->newKey)
m_NextSendRatchet->key.GenerateKeys ();
m_SendForwardKey = true;
LogPrint (eLogDebug, "Garlic: new send ratchet ", m_NextSendRatchet->newKey ? "new" : "old", " key ", m_NextSendRatchet->keyID, " created");
}
bool ECIESX25519AEADRatchetSession::NewOutgoingSessionMessage (const uint8_t * payload, size_t len, uint8_t * out, size_t outLen)