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Code Issues Releases Activity

correct MixHash after decryption

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orignal 2020-11-04 13:31:28 -05:00
parent d5f3d6111e
commit 21501cbf81
1 changed files with 2 additions and 4 deletions
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6
libi2pd/RouterContext.cpp
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@ -687,10 +687,8 @@ namespace i2p
if (IsECIES ()) if (IsECIES ())
{ {
if (!m_InitialNoiseState) return false; if (!m_InitialNoiseState) return false;
m_CurrentNoiseState.reset (new i2p::crypto::NoiseSymmetricState ());
// m_InitialNoiseState is h = SHA256(h || hepk) // m_InitialNoiseState is h = SHA256(h || hepk)
memcpy (m_CurrentNoiseState->m_CK, m_InitialNoiseState->m_CK, 64); m_CurrentNoiseState.reset (new i2p::crypto::NoiseSymmetricState (*m_InitialNoiseState));
memcpy (m_CurrentNoiseState->m_H, m_InitialNoiseState->m_H, 32);
m_CurrentNoiseState->MixHash (encrypted, 32); // h = SHA256(h || sepk) m_CurrentNoiseState->MixHash (encrypted, 32); // h = SHA256(h || sepk)
uint8_t sharedSecret[32]; uint8_t sharedSecret[32];
m_Decryptor->Decrypt (encrypted, sharedSecret, ctx, false); m_Decryptor->Decrypt (encrypted, sharedSecret, ctx, false);
@ -704,7 +702,7 @@ namespace i2p
LogPrint (eLogWarning, "Router: Tunnel record AEAD decryption failed"); LogPrint (eLogWarning, "Router: Tunnel record AEAD decryption failed");
return false; return false;
} }
m_CurrentNoiseState->MixHash (encrypted, TUNNEL_BUILD_RECORD_SIZE); // h = SHA256(h || ciphertext) m_CurrentNoiseState->MixHash (encrypted, ECIES_BUILD_REQUEST_RECORD_CLEAR_TEXT_SIZE + 16); // h = SHA256(h || ciphertext)
return true; return true;
} }
else else