AES encrypted string not decrypting outside ue4

Development Programming & Scripting C++
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1 
FString Word = "Hello"; 
FString newWord = FBase64::Encode(Word);
uint32 newWordSize = newWord.Len();
newWordSize = newWordSize + (FAES::AESBlockSize - (newWordSize % FAES::AESBlockSize));
uint8* newWordBytes = new uint8[newWordSize];

if (FBase64::Decode(*newWord, newWord.Len(), newWordBytes))
{
    FString KeyStr = "JfryFIrdlovQALOPEXdsubnrUNBBbvVf";
    ANSICHAR* AESKEY = TCHAR_TO_ANSI(*KeyStr);
    
    FAES::EncryptData(newWordBytes, newWordSize, AESKEY);

    FString EncryptedBase64Str = FBase64::Encode(newWordBytes, newWordSize); // uX32V+5lIDVhhVnr8UQt4g==
}
else
{
    UE_LOG(LogTemp, Warning, TEXT("FBase64::Decode Failed"));
}
  • decrypting this EncryptedBase64Str in ue4 will return Hello and Squared A symbol at end
    i.e., something wrong with ending block
  • check this EncryptedBase64Str with any online aes tool, decryption not working.
    decryption not working in my nodejs webapi also, what’s wrong with it.
  • NodeJS encrypted string decrypted in ue4 without any issues.
2

The AES Plugin: