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    AESFile Manual

    About

    The class AESFile provides means to create and work with AES encrypted files. Derived from BaseFile working with AES files works exactly the same as with other files, with the only exception of opening the file. So it is recommended to read BaseFile Manual first.

    Warning
    For encryption using the MAXON API see Stream Conversions Manual.
    // This example demonstrates encrypting a file and comparing the encrypted result with the original file.
    // Let user choose a file to encrypt.
    Filename fnInput;
    if (!fnInput.FileSelect(FILESELECTTYPE::ANYTHING, FILESELECT::LOAD, "Open file to encrypt..."_s))
    return maxon::OK;
    if (!fileInput || !fileAes)
    return maxon::OutOfMemoryError(MAXON_SOURCE_LOCATION);
    // Open the input file.
    {
    return maxon::IoError(MAXON_SOURCE_LOCATION, MaxonConvert(fnInput, MAXONCONVERTMODE::NONE), "Error: Failed to open input file."_s);
    }
    Filename fnAes = fnInput;
    fnAes.SetSuffix("aes"_s);
    // Note: Password needs to be either 16, 24, or 32 characters long.
    const char pw[] = { 's', 'p', 'e', 'a', 'k', ',', ' ', 'f', 'r', 'i', 'e', 'n', 'd', ',', ' ', 'a', 'n', 'd', ' ', 'e', 'n', 't', 'e', 'r' };
    const Int32 keylen = sizeof(pw) * 8; // keylen is in bits
    DebugAssert((keylen == 128) || (keylen == 192) || (keylen == 256));
    const Int32 blocksize = 256;
    if (!fileAes->Open(fnAes, pw, keylen, blocksize, 0, FILEOPEN::WRITE))
    {
    return maxon::IoError(MAXON_SOURCE_LOCATION, MaxonConvert(fnAes, MAXONCONVERTMODE::NONE), "Error: Failed to open AES file for writing."_s);
    }
    const Int fileSize = fileInput->GetLength();
    const Int readBytes = fileInput->TryReadBytes(buffer, fileSize);
    if (readBytes != fileSize)
    {
    return maxon::UnexpectedError(MAXON_SOURCE_LOCATION, "Error: Failed to read data from input file."_s);
    }
    if (!fileAes->WriteBytes(buffer, fileSize))
    {
    return maxon::UnexpectedError(MAXON_SOURCE_LOCATION, "Error: Failed to write data to AES file."_s);
    }
    fileAes->Close();
    fileInput->Close();
    // Finally check the encryption result.
    if (AESFile::CheckEncryption(fnAes, fnInput, pw, keylen, blocksize))
    {
    ApplicationOutput("Success: The encrypted file matches the encrypted version."_s);
    return maxon::OK;
    }
    else
    {
    return maxon::UnexpectedError(MAXON_SOURCE_LOCATION, "Error: The encrypted file does not match the encrypted version."_s);
    }
    const char ** buffer
    Definition: abstract.h:327
    maxon::Url MaxonConvert(const Filename &fn, MAXONCONVERTMODE convertMode)
    @ NONE
    No check if file exists under case-sensitive drives.
    static Bool CheckEncryption(const Filename &encrypt, const Filename &decrypt, const char *key, Int32 keylen, Int32 blocksize)
    Definition: ge_autoptr.h:37
    Manages file and path names.
    Definition: c4d_file.h:94
    void SetSuffix(const maxon::String &str)
    Bool FileSelect(FILESELECTTYPE type, FILESELECT flags, const maxon::String &title, const maxon::String &force_suffix=maxon::String())
    #define NewMemClear(T, cnt)
    Definition: defaultallocator.h:204
    maxon::Char Char
    Definition: ge_sys_math.h:52
    maxon::Int32 Int32
    Definition: ge_sys_math.h:56
    maxon::Int Int
    Definition: ge_sys_math.h:60
    @ V_INTEL
    Intel, little endian.
    return OK
    Definition: apibase.h:2735
    @ ANY
    Show an error dialog for any error.
    @ READ
    Open the file for reading.
    @ LOAD
    Load dialog.
    @ ANYTHING
    Any file.
    #define MACCREATOR_CINEMA
    Standard Mac creator code for Cinema 4D.
    Definition: ge_prepass.h:31
    #define MACTYPE_CINEMA
    Standard Mac type code for Cinema 4D.
    Definition: ge_prepass.h:30
    #define MAXON_SOURCE_LOCATION
    Definition: memoryallocationbase.h:67
    #define ApplicationOutput(formatString,...)
    Definition: debugdiagnostics.h:204
    #define DebugAssert(condition,...)
    Definition: debugdiagnostics.h:242
    #define iferr_return
    Definition: resultbase.h:1524

    Allocation/Deallocation

    AESFile objects are created with the usual tools, see Entity Creation and Destruction Manual (Classic).

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    Warning
    For a plugin to be cross platform then the type and creator parameters must be correctly filled for Mac.

    Miscellaneous

    Further Reading