Questions tagged [cryptonight]

CryptoNight is a proof-of-work algorithm that mixes graphics processing unit (GPU) and central processing unit (CPU) mining to create a system resistant to both application-specific integrated circuits (ASICs) and fast memory-on-chip devices

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20
votes
2answers
30k views

Where can I find a description of the CryptoNight hash algorithm?

Where can I find a description of the CryptoNight hash algorithm? Both a thorough and ELI5 description of the hash algorithm would be appreciated
1
vote
1answer
145 views

I'm trying to create a Python miner, can I get some guidance please?

I have been wondering how to make a Python Monero miner. I know about py-cryptonight, but does anyone know anything about how to actually code with it? I understand that cn_slow_hash is for mining, ...
15
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3answers
40k views

Is it better to mine with a CPU or GPU

"The proof-of-work algorithm, CryptoNight, is AES-intensive and "memory heavy", which significantly reduces the advantage of GPU over CPU." https://en.wikipedia.org/wiki/Monero_(cryptocurrency) ...
17
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5answers
34k views

Is Monero amenable to ASIC mining?

Is Monero ASIC resistant? If not, are there already people out there running on ASICs?
11
votes
1answer
290 views

Which reasons were discussed for potentially changing the proof-of-work algorithm?

Which reasons were discussed for potentially changing the proof-of-work algorithm to something else in the future (Cuckoo cycle in particular)?
3
votes
1answer
356 views

Keccak vs Keccak-f permutation in cns008

Keccak is mentioned in cns008 (the cryptonight hash description) in two ways: First in section 3 (Scratchpad Initialization) as Keccak, and another time in section 5 (Result Calculation) as Keccak-f (...
5
votes
1answer
331 views

Cryptonote SHA3 bigger than 64byte? (Scratchpad Initialization)

The cryptonote whitepaper says First, the input is hashed using Keccak [KECCAK] with parameters b = 1600 and c = 512. [..] That's nothing else as hashing the input with SHA3. The size of a ...
4
votes
2answers
797 views

Where can I find some test inputs and outputs for the CryptoNight (Monero PoW) hash algorithm?

I'm interested in cobbling together my own implementation, but in order to validate it, I need to find some valid inputs/outputs (4 minimum, i.e. one that goes through the groestl path, one that goes ...
4
votes
1answer
681 views

Is Monero susceptible to botnets?

When reading up on CryptoNote, something struck me on the wikipedia page. From wikipedia (emphasis mine) CryptoNight is a proof-of-work algorithm that mixes graphics processing unit (GPU) and ...
4
votes
1answer
129 views

How is Keccak calculated in Monero?

I am reading the monero's implementation of Keccak (used as first part of slow_hash) in src/crypto/keccak.c I have found that it is a Keccak-256 (with b=1600, c=512, r=1088) and "output" of 1600 bits ...