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Core/PacketIO: Increase max allowed incoming packet size for CMSG_HOTFIX_REQUEST

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This commit is contained in:
Shauren
2021-03-02 01:06:28 +01:00
parent e381745664
commit 55eef73c48
6 changed files with 61 additions and 8 deletions
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22
src/common/Cryptography/AES.cpp
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@@ -63,3 +63,25 @@ bool Trinity::Crypto::AES::Process(IV const& iv, uint8* data, size_t length, Tag
return true;
}
bool Trinity::Crypto::AES::ProcessNoIntegrityCheck(IV const& iv, uint8* data, size_t partialLength)
{
ASSERT(!_encrypting, "Partial encryption is not allowed");
ASSERT(partialLength <= std::numeric_limits<int>::max());
int len = static_cast<int>(partialLength);
if (!EVP_CipherInit_ex(_ctx, nullptr, nullptr, nullptr, iv.data(), -1))
return false;
int outLen;
if (!EVP_CipherUpdate(_ctx, data, &outLen, data, len))
return false;
len -= outLen;
if (!EVP_CipherFinal_ex(_ctx, data + outLen, &outLen))
return false;
ASSERT(len == outLen);
return true;
}

1
src/common/Cryptography/AES.h
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@@ -43,6 +43,7 @@ namespace Crypto
void Init(Key const& key);
bool Process(IV const& iv, uint8* data, size_t length, Tag& tag);
bool ProcessNoIntegrityCheck(IV const& iv, uint8* data, size_t partialLength);
private:
EVP_CIPHER_CTX* _ctx;

12
src/common/Cryptography/Authentication/WorldPacketCrypt.cpp
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@@ -41,6 +41,18 @@ struct WorldPacketCryptIV
std::array<uint8, 12> Value;
};
bool WorldPacketCrypt::PeekDecryptRecv(uint8* data, size_t length)
{
if (_initialized)
{
WorldPacketCryptIV iv{ _clientCounter, 0x544E4C43 };
if (!_clientDecrypt.ProcessNoIntegrityCheck(iv.Value, data, length))
return false;
}
return true;
}
bool WorldPacketCrypt::DecryptRecv(uint8* data, size_t length, Trinity::Crypto::AES::Tag& tag)
{
if (_initialized)

1
src/common/Cryptography/Authentication/WorldPacketCrypt.h
View File

@@ -27,6 +27,7 @@ public:
WorldPacketCrypt();
void Init(Trinity::Crypto::AES::Key const& key);
bool PeekDecryptRecv(uint8* data, size_t length);
bool DecryptRecv(uint8* data, size_t length, Trinity::Crypto::AES::Tag& tag);
bool EncryptSend(uint8* data, size_t length, Trinity::Crypto::AES::Tag& tag);