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Author Topic: Litecoin proof of work  (Read 2880 times)
pieppiep
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May 15, 2012, 10:25:25 AM
 #1

I'm interested in the proof of work concept used in the cryptocurrencies.
The one used for bitcoin I understand and implement if I want.
The one used for litecoin is a bit harder to find.
Until now I just find I should replace the sha256(sha256(block of 80 bytes)) with scrypt(block of 80 bytes).
The problem is the scrypt hash, I can't find a clear description.
I know it somehow generates a pseudo random block of data with a length of 128kB and does some pseudo random mixing of that block.
The sourcecode of the cpuminer I found is to optimized for me to read.
Does anyone have a link to some pseudo code like the one on http://en.wikipedia.org/wiki/Sha256 but for scrypt?

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May 15, 2012, 11:03:09 AM
 #2

A thorough description of scrypt is available at the following address, along with a reference C implementation:
http://www.tarsnap.com/scrypt.html

The scrypt-based proof of work is described in the Litecoin Wiki:
https://github.com/coblee/litecoin/wiki/Scrypt-proof-of-work

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