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Change Misc to Common and cleanups.

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HikikoMarmy
2025-06-15 00:13:14 +01:00
parent fdce0ef952
commit 9d3139466d
7 changed files with 687 additions and 16 deletions
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51
Crypto/RealmCrypt.cpp
View File

@@ -1,6 +1,6 @@
#include "RealmCrypt.h"
#include "../misc/Utility.h"
#include "../Common/Utility.h"
RealmCrypt::RealmCrypt()
{
@@ -63,40 +63,63 @@ std::string RealmCrypt::decryptString( std::string &input )
return std::string( reinterpret_cast< const char * >( result ), input.size() );
}
std::wstring RealmCrypt::encryptString( std::wstring &input )
std::vector<uint8_t> RealmCrypt::encryptString( const std::wstring &input )
{
if( input.size() % 16 != 0 )
// Convert UTF-16 string to raw bytes
std::vector<uint8_t> utf16Bytes;
utf16Bytes.reserve( input.size() * 2 );
for( wchar_t ch : input )
{
input.append( 16 - ( input.size() % 16 ), L'\0' );
utf16Bytes.push_back( static_cast< uint8_t >( ch & 0xFF ) );
utf16Bytes.push_back( static_cast< uint8_t >( ( ch >> 8 ) & 0xFF ) );
}
rijndael aes;
// Pad to nearest 16 bytes
if( utf16Bytes.size() % 16 != 0 )
{
utf16Bytes.resize( ( utf16Bytes.size() / 16 + 1 ) * 16, 0 );
}
auto result = aes.EncryptECB( reinterpret_cast< const uint8_t * >(
input.c_str() ),
static_cast< uint32_t >( input.size() ),
// Encrypt using AES ECB
rijndael aes;
auto encrypted = aes.EncryptECB(
reinterpret_cast< const uint8_t * >( utf16Bytes.data() ),
static_cast< uint32_t >( utf16Bytes.size() ),
default_sym_key.data()
);
return std::wstring( reinterpret_cast< const wchar_t * >( result ), input.size() );
// Return the raw encrypted bytes
return std::vector<uint8_t>( encrypted, encrypted + utf16Bytes.size() );
}
std::wstring RealmCrypt::decryptString( std::wstring &input )
std::wstring RealmCrypt::decryptString( std::vector<uint8_t> &input )
{
// Ensure input is a multiple of 16 bytes
if( input.size() % 16 != 0 )
{
input.append( 16 - ( input.size() % 16 ), L'\0' );
input.resize( ( input.size() / 16 + 1 ) * 16, 0 );
}
rijndael aes;
auto result = aes.DecryptECB( reinterpret_cast< const uint8_t * >(
input.c_str() ),
auto result = aes.DecryptECB(
reinterpret_cast< const uint8_t * >( input.data() ),
static_cast< uint32_t >( input.size() ),
default_sym_key.data()
);
return std::wstring( reinterpret_cast< const wchar_t * >( result ), input.size() );
// Convert decrypted bytes back into a wstring
std::wstring output;
output.reserve( input.size() / 2 );
for( size_t i = 0; i + 1 < input.size(); i += 2 )
{
uint16_t ch = static_cast< uint16_t >( input[ i ] | ( input[ i + 1 ] << 8 ) );
if( ch == 0 ) break; // Optional: stop at null terminator
output.push_back( static_cast< wchar_t >( ch ) );
}
return output;
}
std::vector< uint8_t > RealmCrypt::encryptSymmetric( std::span< const uint8_t > input )

4
Crypto/RealmCrypt.h
View File

@@ -34,8 +34,8 @@ public:
// Encrypt and decrypt strings.
static std::string encryptString( std::string &input );
static std::string decryptString( std::string &input );
static std::wstring encryptString( std::wstring &input );
static std::wstring decryptString( std::wstring &input );
static std::vector<uint8_t> encryptString( const std::wstring &input );
static std::wstring decryptString( std::vector<uint8_t> &input );
// Encrypt and decrypt byte arrays.
static std::vector< uint8_t > encryptSymmetric( std::span< const uint8_t > input );