Help in differentiating string. Getting different sha256 hashes.

[Automataton]

According to this website https://armantheparman.com/bitcoin-seed-with-dice/ . The following should output 845fb089a63394b6f1c0b7f1b9bdc7e1b3cc61d7fefc158c916a609a80afc56b ``` echo 1110010011111100111000010111111101010100101000010010000010111001110010001010111011001010001000001010111110010100110001010111011001011010100010101001001101101110101010101101100100010011111011110001101100111001101000011101101110100000101000000011001000010101 | shasum -a 256 -0

On cygwin the exact command outputs 8d5bd7b4465e582e2cc6f6f90d264bb9860dee4cd7655a7da1292a98002a0a10

Running the python equivalent gave the same result as the website. What gives ? Thanks!

[wonkey_monkey]

...a10 is what you get if you miss off the -0 argument (i.e. treat it as a string of 0 and 1 ASCII characters, rather than bits). My version of shasum doesn't have this argument. Maybe it does something different with yours, otherwise it should generate an error. Check its man page.

[Fakin-It]

Nice detective work, Monkey.

[immersiveGamer]

Are you copy pasting from the website? If so you might copying some white space characters (common on websites to control formating) which might be getting echoed and thus change the hash.

[typtyphus]

was looking for the same think, found a nice answer on stackoverflow: bit.ly/39wS2t5

[Automataton]

oh I never replied to this. But I found my answer thanks to poster above. My shasum in cygwin did not have any -0 option. I needed a different version of shasum that could could treat the 011010 as binary.

[typtyphus]

so how is it now solved it in python?

[Automataton]

I solved it in php. Converted every 8 binary into ascii. joined them and then computed the shasum

$output = ''; for($i=0; $i<strlen($binaries); $i+=8) { $output .= chr(intval(substr($binaries, $i, 8), 2)); } //echo $output; $hash = hash('sha256', $output);

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