Argon2d is designed to maximize resistance against GPU cracking attacks and accesses memory in a data dependent order. This means that the input data itself defines how the memory is accessed; however, it is susceptible to side-channel attacks. Argon2i is designed to minimize side-channel attacks and accesses memory in a data independent order.
Argon2id is a hybrid between the two where Argon2i is used for the first pass over the memory and Argon2d is used for each pass after that. Kryptokrona XKR just added to Cryptunit! We do not sell coins! If you want to buy some coins you can do it here. You're looking for more hashing power or You want just to try mining? You can do it here. Always do your own research! Try to analyse the exchanges data, and possibility that you can actually sell mined coins.
Some coins might be very high in the ranks, but with zero buy orders and very small trading volume. If the CryptUnit site is one you enjoy and visit frequently, we encourage you to whitelist it. View more donation options. Thank You in Advance! Cryptunit Team. Please consider supporting Cryptunit. Current Data Hashrate: Sign up to join this community. The best answers are voted up and rise to the top.
Asked 3 years, 2 months ago. Active 1 year, 8 months ago. Viewed 4k times. Improve this question. Ralph Ralph 1 1 gold badge 3 3 silver badges 8 8 bronze badges. Active Oldest Votes. Improve this answer. BeloumiX BeloumiX 8 8 silver badges 14 14 bronze badges. Bitcoin miners are ASICs, however, and are typically unable to do anything but brute force that one specific nonce word within the double-sha bitcoin uses, all in the name of saving a few percent of power.
If you set the work factor of such algorithm as high as you can deal with in normal use and the most cost effective attack is to run similar CPUs, that's the best case you can ever get. Argon2 hits this target pretty well. Put simply, someone on the PHC mailing list observed that there weren't any silicon multiplier designs with significantly less latency than the latency of Intel's multiplication instructions.
The idea, I think, was that utilizing multiplication would mean that run time of the hash function on ASICs would be closer to those on a server. The BlaMka permutation used in Argon2 was borrowed from Lyra2. ASICs would need to keep things in memory longer.
I've edited my answer to correct that. But I found from page 15 of the Argon2 version 1. From the Lyra2 v3 paper "The interest of including multiplications on the underlying function is that Sign up or log in Sign up using Google. Sign up using Facebook. Sign up using Email and Password. Post as a guest Name. Email Required, but never shown.
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You can do it here. Always do your own research! Try to analyse the exchanges data, and possibility that you can actually sell mined coins. Some coins might be very high in the ranks, but with zero buy orders and very small trading volume. If the CryptUnit site is one you enjoy and visit frequently, we encourage you to whitelist it.
View more donation options. Thank You in Advance! Cryptunit Team. Please consider supporting Cryptunit. Current Data Hashrate: Latest News All news. Jan Site contains opinion for informational purposes only and does not constitute investment advice. Calculate how profitable it is to mine all other coins on various mining algos on WhatToMine. Find list of known PoW mining pools for all other coins on various mining algos on miningpoolstats.
Service Status. ADON Coin. CPA Coin. I do not recommand to substitute any part of Argon2. All cryptoanalysis refer to the original version. Argon2 is — unlike Catena another scheme from the password hashing competition — not a flexible framework, that has been designed to be used with variable algorithms. Argon2 uses not only the Blake2b function, but also something like a reduced version of Blake2b, the compression function G. However, we do not provide this flexibility in a reference implementation as we guess that the vast majority of the users would prefer as few parameters as possible.
Blake2b is used in two different places in Argon2. The first is as a generic cryptographic hash function to combine the password and other parameters. The second is as the compression function which does the bulk of the work. The compression function doesn't actually require the same level of cryptographic security as a hash might, so it uses only two Blake2b rounds instead of twelve. This construction, taken from Lyra2, was named BlaMka. While SHA could be used for both of these purposes with adjusted block sizes , it would not improve security.
While it would not necessarily decrease security, it would increase the relative advantage of the attacker. This is because Argon2's compression function is heavily optimized in order to minimize the amount of cycles taken while still providing adequate diffusion.
SHA requires far more cycles than BlaMka for the same amount of output, which decreases the memory fill rate and gives the attacker an advantage. See section 6. In conclusion, using SHA instead of Blake2b and BlaMka would not decrease the cryptographic security of Argon2, but it would give an advantage to the attacker by requiring the defender's computer to perform computations that slow it down without slowing the attacker down to the same extent.
The way Blake2 rounds are used in Argon2's compression function is such that timing attacks are not an issue, making it possible to use modular multiplication safely. Sign up to join this community. The best answers are voted up and rise to the top. Asked 3 years, 2 months ago. Active 1 year, 8 months ago. Viewed 4k times. Improve this question. Ralph Ralph 1 1 gold badge 3 3 silver badges 8 8 bronze badges.
Active Oldest Votes. Improve this answer. BeloumiX BeloumiX 8 8 silver badges 14 14 bronze badges. Bitcoin miners are ASICs, however, and are typically unable to do anything but brute force that one specific nonce word within the double-sha bitcoin uses, all in the name of saving a few percent of power.