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verify signature through remore identity

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orignal 2014-10-24 21:51:55 -04:00
parent 6281fa625a
commit 2308f854b1
1 changed files with 9 additions and 12 deletions
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21
SSU.cpp
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@ -214,10 +214,7 @@ namespace transport
m_SessionKeyDecryption.SetIV (((SSUHeader *)buf)->iv); m_SessionKeyDecryption.SetIV (((SSUHeader *)buf)->iv);
m_SessionKeyDecryption.Decrypt (payload, 48, payload); m_SessionKeyDecryption.Decrypt (payload, 48, payload);
// verify // verify
CryptoPP::DSA::PublicKey pubKey; if (!m_RemoteIdentity.Verify (signedData, 532, payload))
pubKey.Initialize (i2p::crypto::dsap, i2p::crypto::dsaq, i2p::crypto::dsag, CryptoPP::Integer (m_RemoteRouter->GetRouterIdentity ().signingKey, 128));
CryptoPP::DSA::Verifier verifier (pubKey);
if (!verifier.VerifyMessage (signedData, 532, payload, 40))
LogPrint ("SSU signature verification failed"); LogPrint ("SSU signature verification failed");
SendSessionConfirmed (y, ourAddress); SendSessionConfirmed (y, ourAddress);
@ -230,15 +227,15 @@ namespace transport
payload++; // identity fragment info payload++; // identity fragment info
uint16_t identitySize = be16toh (*(uint16_t *)payload); uint16_t identitySize = be16toh (*(uint16_t *)payload);
payload += 2; // size of identity fragment payload += 2; // size of identity fragment
if (identitySize == i2p::data::DEFAULT_IDENTITY_SIZE) m_RemoteIdentity.FromBuffer (payload, identitySize);
{ m_Data.UpdatePacketSize (m_RemoteIdentity.GetIdentHash ());
m_RemoteIdentity.FromBuffer (payload, identitySize);
m_Data.UpdatePacketSize (m_RemoteIdentity.GetIdentHash ());
}
else
LogPrint ("SSU unexpected identity size ", identitySize);
payload += identitySize; // identity payload += identitySize; // identity
// TODO: verify signature payload += 4; // signed-on time
size_t paddingSize = (payload - buf) + m_RemoteIdentity.GetSignatureLen ();
paddingSize >>= 4; // %16
if (paddingSize > 0) paddingSize = 16 - paddingSize;
payload += paddingSize;
// TODO: verify signature (need data from session request), payload points to signature
SendI2NPMessage (CreateDeliveryStatusMsg (0)); SendI2NPMessage (CreateDeliveryStatusMsg (0));
Established (); Established ();
} }