Hello EveryBody! I want to ask how to convert this PHP code to Elixir code $binKey = pack(“H*”, $hmackey); $hmac = strtoupper(hash_hmac(‘sha512’, $msg, $binKey)); Thanks! :smiley:

Well it looks like if I execute the following code: <?php $key = "0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF"; $v = pack("H*", $key); file_put_contents("data", $v); And the following elixir code: packed = File.…

Let me google that for you… The solution provided here should help: [Zach Garwood] How does one generate an HMAC string in Elixir? hmac, sha256, erlang-otp, elixir asked by Zach Garwood on 08:50PM - 22 Nov 14 UTC

Had to deal with this a few weeks back and that SO answer saved me.

Can someone help me please because I don’t know how to resolve this problem

Did you try the stuff linked in the post by @mruoss ?

$hmackey is a value like this “0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF0123456789ABCDEF” and pack(“H*”, $hmackey) is like this , var_dump respon is that a string(64) “#Eg��#Eg��#Eg��#Eg��#Eg��#Eg��#Eg��#Eg��”

Yes it’s work but it’s doen’t return the same value like the respone in PHP code

I am not sure how pack("H*" ...) works. According to the docs it seems is generates a string reprensenting the data like how PHP reprensents the data in memory. If you need to do that in another language you need to know exactly what is the transformation of the data here. Edit: found a hint: So …

Thanks everybody, I’ve resolve the problem with the answer of @lud

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Code from PHP to Elixir

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lud May 20, 2022, 4:25pm 5

Hi,

What is $hmackey and what is the output of pack("H*", $hmackey) ?