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3

I want to make it harder to decrypt AES I send. Fundamentally, the thing you are trying to do is completely unnecessary. If AES does ever become broken, the scenarios in which this makes any measurable difference are exceedingly unlikely. If AES isn't broken, then doing this was wasted effort in the first place. There is zero plausible reason why your ...


4

Your first sentence is entirely wrong. A OTP is a theoretical construct that requires a fully random key (at least) the size of the plaintext. Limiting the amount of random bits to 256 will by definition not be an OTP - at least not for constructions that accept a plaintext larger than 256 bits. The same idea is that if you use a key called $i$ which is ...



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