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I'm attempting to write a monero miner in PHP (I know PHP). I'm not after hashing speed I'm after understanding what is happening.

I have looked over the "CRYPTONOTE STANDARD 008" document that seems to explain what to do once I have the block data, what I'm not sure about is the input I am supposed to run the Keccak hash on.

First, the input is hashed using Keccak [KECCAK] with parameters b = 1600 and c = 512.

Any code samples in PHP would be greatly appreciated.

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  • so far this is what I have ` <?PHP $currentblock = file_get_contents("moneroblocks.info/api/get_stats/"); $myarry = explode( ",",$currentblock); $difficulty = $myarry[0]; $temp = explode( ":",$myarry[1]); $height =$temp[1]; $hashrate= $myarry[2]; $total_emission= $myarry[3]; $last_reward= $myarry[4]; $last_timestamp= $myarry[5]; echo $currentblock; echo "<BR><BR>"; $currentblock2 = file_get_contents("moneroblocks.info/api/get_block_header/$height"); echo $currentblock2;
    – tek-dragon
    Jan 29, 2018 at 3:16

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Keccak is nearly SHA-3.

Taken from CryptoNoter

SHA-3 is based on (a particular instanciation of) Keccak, but with a couple minor differences from the original Keccak. Cryptonote was made before SHA-3 standardization. - user36303

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  • SHA-3 is based on (a particular instanciation of) Keccak, but with a couple minor differences from the original Keccak. Cryptonote was made before SHA-3 standardization.
    – user36303
    Jan 30, 2018 at 15:39
  • This answer is wrong. SHA-3 and Keccak-256 3.0 do not produce the same outputs as explained by its author: twitter.com/mjos_crypto/status/933456673443901440 .
    – Maxithi
    Jan 30, 2018 at 15:54
  • I think/ hope I have the hashing side of it down unfortunatly I need to beable to getwork from a pool.
    – tek-dragon
    Jan 31, 2018 at 21:28
  • I think I found most of what I need to connect with PHP using Curl currently working on writing a simple getwork function then I can test the rest of what I have. thanks.
    – tek-dragon
    Feb 2, 2018 at 6:47

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