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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: sci.crypt
Subject: Re: HMAC cipher and a TRNG...
Date: Wed, 24 Jul 2024 16:44:39 -0700
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On 7/7/2024 10:41 PM, Chris M. Thomasson wrote:
> On 7/7/2024 10:37 PM, Chris M. Thomasson wrote:
>> On 7/7/2024 10:34 PM, Chris M. Thomasson wrote:
>>> On 7/7/2024 8:10 PM, Rich wrote:
>>>> Chris M. Thomasson <chris.m.thomasson.1@gmail.com> wrote:
>> [...]
>>>> Same key, same plaintext, two different ciphertexts.
>>>
>>> Both. I wanted each encryption using the same key and plaintext to 
>>> create radically different ciphertexts.
>>>
>>> Also, I wanted it to be bit sensitive. If a single bit of ciphertext 
>>> is altered it will decrypt to random junk.
>>>
>>> My HMAC Cipher experiment does both.
>>>
>>> I think those are interesting things.
>>
>> You can play around with this on my site. Try altering the ciphertext 
>> in anyway, and hit decrypt. The plaintext will be random garbage. It 
>> would help if my site used a real TRNG, but oh well for now.
>>
> 
> Right now it's using hexbytes for ciphertext for the online version, my 
> parser could be better. Anyway, here is a version of it in C that you 
> can play around with:
> 
> https://groups.google.com/g/comp.lang.c/c/a53VxN8cwkY/m/XKl1-0a8DAAJ

Just wondering if you found some time to compile my work in C99. If so, 
did you give it a go? run it? Then you can perform your personal tests 
against it. Have fun!