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Just another reminder for me in case I want to revisit it sometime in the future: <?php $str = "751a6f1d3d5c3241365321016c05620a7e5e34413246660461412e5a2e412c49254a24"; $arr = array_map("hexdec", array_reverse(str_split($str, 2))); $str = ""; for($i = 0; $i < count($arr...

Basically just a reminder for myself in case I want to revisit this challenge in the future: <?php $str = "e5534adac53023aaad55518ac42671f8a1471d94d8676ce1b1". "1309c1c27a64b1ae1f4a91c73f2bfce74c5e8e826c27e1f74c". "4f8081296ff3ee4519968a6570e2aa0709c2c4687eece44a15". &q...

Ok, got it, had a mistake in my program . Don't know whether this thread spoils too much?

HugStuart wrote:One byte can store 8 bits, this leads to 256 different keys: 00000001, 00000010, 00000011, ..., 11111110, 11111111

Sorry, I meant 256. I've looked over all of them, and couldn't find anything that makes sense at all .

Hi, I'm probably overlooking something or misinterpreting the text, therefore I've to ask you for further advices. What I've done so far. I suppose that the hex encoded string is encrypted the same way as in "Didactic XOR Cipher 1", so I've decrypted it in the same way. The text now says t...

Had got the same issue, re-implemented the code in PHP, which I'm much more familiar with. Got the result.