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From: "Chris M. Thomasson" <chris.m.thomasson.1@gmail.com>
Newsgroups: sci.crypt
Subject: Re: Inspired by Chris's HMAC cipher
Date: Mon, 7 Oct 2024 13:20:41 -0700
Organization: A noiseless patient Spider
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On 9/20/2024 4:17 AM, Stefan Claas wrote:
> I came up with the following idea.
> 
> Register a webpage at nekoweb.org, use an API key
> and send encrypted messages to the web page, which
> later Bob and Alice can decrypt.[...]

To decrypt use the default key, except click on the SHA512 radio button, 
then click decrypt:

http://fractallife247.com/test/hmac_cipher/ver_0_0_0_1?ct_hmac_cipher=a4f7cb5f3c7a0957d9517ad740b06a5d13a02e0affcb2882f700e388eec93f650c92e3b451915f04d2c0dd45f13e1ad5bfad03552937e2ff2602ec88dc3ccdce8b3076ec0addad4b41123297542709c292bb836850057363dbd2e7c7eb6f237db3e3d3d891600c880b92bbbe0b293a34bbc4994c81dba3deef421247965b01ef1cfca2ac91fc73b1511997cb09907e