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Bitcoin is like cash under the mattress Bitcoin Discussion
I advise against encryption for cold storage as well though: you are trying to k…
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n/a | Anders | August 01, 2014, 01:39:39 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
I have lost a small amount of bitcoins. Just because at the time (2011) it wasn'…
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n/a | Anders | August 01, 2014, 01:27:59 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
But splitting up the codes on several papers is even more burdensome. Like havin…
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n/a | Anders | August 01, 2014, 01:17:12 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Just to irritate all of you Bitcoin fans (I'm a Bitcoin fan too, but for the tec…
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n/a | Anders | August 01, 2014, 01:13:37 PM |
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$500,000 per Bitcoin, baby. The math behind it. Speculation
My guess is that Bitcoin may reach $5,000 but not much more than that. And Bitco…
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n/a | Anders | August 01, 2014, 01:04:37 PM |
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$500,000 per Bitcoin, baby. The math behind it. Speculation
My guess is that Bitcoin may reach $5,000 but not much more than that. And Bitco…
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n/a | Anders | August 01, 2014, 10:23:56 AM |
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Why Anonymity so important to you? Bitcoin Discussion
Imagine criminals being able to track all your transactions and identify you. Th…
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n/a | Anders | August 01, 2014, 10:12:22 AM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Just to irritate all of you Bitcoin fans (I'm a Bitcoin fan too, but for the tec…
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n/a | Anders | August 01, 2014, 09:44:59 AM |
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Bitcoin Jokes Bitcoin Discussion
A bitcoin walks into a bar... and walks out as a very drunk Satoshi.
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n/a | Anders | August 01, 2014, 04:52:20 AM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
I have lost a small amount of bitcoins. Just because at the time (2011) it wasn'…
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n/a | Anders | August 01, 2014, 04:29:05 AM |
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Bitcoin is like Android mid 2009 / Linux end 1998 Bitcoin Discussion
Android is like an operating system from the 90s. Having to install software is…
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n/a | Anders | August 01, 2014, 04:05:40 AM |
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Bitcoin is like Android mid 2009 / Linux end 1998 Bitcoin Discussion
Android is like an operating system from the 90s. Having to install software is…
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n/a | Anders | August 01, 2014, 03:53:18 AM |
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Bitcoin is like Android mid 2009 / Linux end 1998 Bitcoin Discussion
Android is like an operating system from the 90s. Having to install software is…
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n/a | Anders | August 01, 2014, 03:34:24 AM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
To just throw up one's hands in resignation and store the bitcoins under the mat…
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n/a | Anders | August 01, 2014, 02:36:17 AM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
One side of Bitcoin is the powerful, decentralized peer-to-peer authority-free p…
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n/a | Anders | August 01, 2014, 12:42:33 AM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
The bitcoins ARE safely stored on the block chain today but if someone loses a…
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n/a | Anders | August 01, 2014, 12:39:25 AM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Would it be possible to have a separate block chain for Bitcoin wallets? The pri…
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n/a | Anders | July 31, 2014, 06:28:37 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
I do think it would be cool if there was some big Bitcoin bank that paid interes…
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n/a | Anders | July 31, 2014, 05:59:48 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Use a Chromebook. A PC is unsafe. Just kidding a bit, but maybe in the future a…
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n/a | Anders | July 31, 2014, 05:50:57 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
any other form of ID can be used or abused the same way a privkey can.The IPv6 p…
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n/a | Anders | July 31, 2014, 05:46:42 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
To just throw up one's hands in resignation and store the bitcoins under the mat…
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n/a | Anders | July 31, 2014, 05:29:06 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
But what should you do if you "ID" gets compromised? Generate a new "ID", and wh…
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n/a | Anders | July 31, 2014, 05:25:51 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
But how is Bitcoin going to compete with new cryptocurrencies that will use pers…
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n/a | Anders | July 31, 2014, 05:22:00 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
But how is Bitcoin going to compete with new cryptocurrencies that will use pers…
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n/a | Anders | July 31, 2014, 05:16:29 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
All online systems lack security by the very fact that they are online.Even a bi…
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n/a | Anders | July 31, 2014, 05:13:54 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
That's way too old tech for me. I don't even want to back up my computer files l…
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n/a | Anders | July 31, 2014, 05:10:36 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
That's way too old tech for me. I don't even want to back up my computer files l…
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n/a | Anders | July 31, 2014, 05:05:59 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
There's a simple solution.It's called Electrum.You simply need to memorize a 12…
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n/a | Anders | July 31, 2014, 05:03:37 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
That's way too old tech for me. I don't even want to back up my computer files l…
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n/a | Anders | July 31, 2014, 04:56:36 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
any other form of ID can be used or abused the same way a privkey can.The IPv6 p…
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n/a | Anders | July 31, 2014, 04:54:32 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
i laugh at these idea'sYOU DO HAVE AN IDits called the private key. keep it safe…
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n/a | Anders | July 31, 2014, 04:49:18 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Maybe some sort of multi-sig technology.If only such a thing existed.I was think…
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n/a | Anders | July 31, 2014, 04:37:29 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Here is a presentation about how to secure your bitcoins: MIT Bitcoin Expo 2014…
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n/a | Anders | July 31, 2014, 04:23:47 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
Today Bitcoin is a bit like a Star Trek warp drive mounted on a horse wagon.
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n/a | Anders | July 31, 2014, 03:55:58 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
and how would an ID system work? the best option we have now for easy security i…
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n/a | Anders | July 31, 2014, 03:53:59 PM |
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Bitcoin is like cash under the mattress Bitcoin Discussion
One side of Bitcoin is the powerful, decentralized peer-to-peer authority-free p…
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n/a | Anders | July 31, 2014, 03:41:27 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I created a GitHub project for R30: https://github.com/AndersLindman/R30-hash-fu…
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n/a | Anders | July 30, 2014, 12:50:57 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
R30 with the Merkle–Damgård construction:Code: private final static int MAX_HASH…
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n/a | Anders | July 29, 2014, 08:21:50 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I noticed that the rightmost bit in initial condition needs to be 1. If all the…
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n/a | Anders | July 29, 2014, 12:17:54 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I noticed that the rightmost bit in initial condition needs to be 1. If all the…
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n/a | Anders | July 29, 2014, 10:44:21 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Remove message length encoding. That's a foreign concept to a hash function.I ca…
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n/a | Anders | July 28, 2014, 09:47:37 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Code:R30(nonce + H(blockheader)) < targetWhere:H= a secure cryptographic hashing…
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n/a | Anders | July 28, 2014, 11:26:17 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I think you have to consider what is your intention for using R30? As a general…
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n/a | Anders | July 28, 2014, 10:21:22 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Maybe not for Bitcoin but the O(n2) of R30 makes it very computationally intensi…
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n/a | Anders | July 28, 2014, 09:47:02 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
The hash function should be defined for certain a block size.Padding is an optio…
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n/a | Anders | July 28, 2014, 08:07:54 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Aha. Here is how the length bits are handled in SHA-256:"Pre-processing:append t…
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n/a | Anders | July 28, 2014, 07:39:53 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Remove message length encoding. That's a foreign concept to a hash function.The…
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n/a | Anders | July 28, 2014, 07:28:28 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I did a worst case test with one million bits messages of 010101010... and it wo…
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n/a | Anders | July 28, 2014, 07:25:41 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Fast Java implementation of R30 using 64-bit longs:Code: public final byte[] dig…
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n/a | Anders | July 28, 2014, 04:23:05 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I think with machine code the shifts of the 64 bit registers can automatically b…
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n/a | Anders | July 27, 2014, 03:59:24 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Fewest calculations so far and with 7N: http://jsfiddle.net/34FyH/
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n/a | Anders | July 27, 2014, 01:08:50 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Using the Java long type (64 bits) would make the algorithm fast. Tedious to imp…
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n/a | Anders | July 27, 2014, 03:11:37 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Here is a more efficient implementation, not yet parallel, but already illustrat…
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n/a | Anders | July 27, 2014, 02:15:17 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
But how to prove that 7N is enough mathematically? We enumerated all three bit…
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n/a | Anders | July 27, 2014, 01:11:51 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
- has constant memory requirement, that is just two arrays one of the current an…
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n/a | Anders | July 27, 2014, 10:38:45 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Fortunately it seems that 7N is enough. I tested with messages of length 100,000…
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n/a | Anders | July 27, 2014, 09:54:00 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
- has constant memory requirement, that is just two arrays one of the current an…
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n/a | Anders | July 27, 2014, 08:09:22 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
It seems the 0,1,0,1 ... and 1,0,1,0 ... two bit patterns are the worst case tha…
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n/a | Anders | July 27, 2014, 08:03:45 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
It seems 7 is the bare minimum for a setup like in Bitcoin 80 bytes -> 32 bytes…
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n/a | Anders | July 27, 2014, 05:14:20 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
The length bits are only there to make distinctions between messages that otherw…
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n/a | Anders | July 27, 2014, 05:07:28 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
It should start with the whole initial condition which includes the concatenated…
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n/a | Anders | July 27, 2014, 04:44:55 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
The influence of the right side bit may look nonlinear yet the mixing of cell va…
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n/a | Anders | July 27, 2014, 03:54:01 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I run quite a few initial conditions to see that the slope is far from trivial,…
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n/a | Anders | July 27, 2014, 02:00:07 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
It appears that neither of us had the right intuition. I plotted the effect of a…
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n/a | Anders | July 27, 2014, 12:42:07 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
You can try with 0.5 N which is the value needed for both left and right side of…
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n/a | Anders | July 27, 2014, 12:36:51 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
The right side of the automaton is where the "randomness" is so the right value…
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n/a | Anders | July 27, 2014, 12:11:09 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
The same with the leftmost value in the initial condition. It needs to become "r…
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n/a | Anders | July 26, 2014, 11:45:58 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
The right side of the automaton is where the "randomness" is so the right value…
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n/a | Anders | July 26, 2014, 11:23:29 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I mined my name I noticed that the nonce needs to be on the left side of the me…
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n/a | Anders | July 26, 2014, 10:59:03 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Note that computation of the below area is sufficient.Yes, that area is what is…
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n/a | Anders | July 26, 2014, 10:48:45 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Another potential problem with R30 other than it being untested is that it may t…
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n/a | Anders | July 25, 2014, 10:33:00 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
It would probably be too risky to use R30 in Bitcoin today. The algorithm is way…
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n/a | Anders | July 24, 2014, 07:47:23 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I created a Google Code project called R30 hash function: https://code.google.co…
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n/a | Anders | July 24, 2014, 06:21:16 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I think the full message version of my Rule 30 hash function has at least the fo…
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n/a | Anders | July 23, 2014, 09:40:20 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Here is the Rule 30 hash function with the same algorithm and with fewer calcula…
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n/a | Anders | July 23, 2014, 08:17:31 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Here is a version of the Rule 30 hash function that skips rows 2.5 times the num…
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n/a | Anders | July 23, 2014, 06:18:38 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
The image below shows how the bits for the hash value are taken from the further…
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n/a | Anders | July 23, 2014, 06:57:07 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
"In cryptography, a random oracle is an oracle (a theoretical black box) that re…
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n/a | Anders | July 23, 2014, 05:32:08 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I agree with DeathAndTaxes and Grau that Rule 30 is probably most interesting as…
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n/a | Anders | July 23, 2014, 05:00:07 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
There is a risk that any form of reducing the length of the original message wil…
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n/a | Anders | July 22, 2014, 05:14:27 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
The initial conditions I have developed are way too amateurish for any serious a…
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n/a | Anders | July 22, 2014, 02:27:03 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
"The Davies–Meyer single-block-length compression function feeds each block of t…
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n/a | Anders | July 22, 2014, 10:45:11 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Here is a version of my hash function using a kind of Merkle–Damgård constructio…
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n/a | Anders | July 22, 2014, 03:56:07 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Then the function is no more secure than SHA-2 so why not just use SHA-2 if the…
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n/a | Anders | July 22, 2014, 01:50:11 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
My current hash function is only potentially good when the message is unknown. W…
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n/a | Anders | July 21, 2014, 03:20:06 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I tested with messages of up to 10,000 characters and got an average of about 35…
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n/a | Anders | July 21, 2014, 08:13:56 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I changed the collision test to use different lengths of the messages tested (1…
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n/a | Anders | July 21, 2014, 06:48:54 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
If I have a hash with 16 bits, then in theory it should take 2N/2 = 28 = 256 att…
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n/a | Anders | July 21, 2014, 06:30:12 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
I wonder if a rule 30 hash function would be quantum-safe. Here is an article ab…
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n/a | Anders | July 21, 2014, 02:32:36 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
If you could break SHA-2 there are a lot more valuable things you could do with…
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n/a | Anders | July 20, 2014, 05:29:09 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
... Going from no know flaws to exploitable in a real world scenario. That hasn'…
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n/a | Anders | July 20, 2014, 05:10:23 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Computational irreducibility, in the case of a hash function, only protects agai…
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n/a | Anders | July 20, 2014, 04:57:50 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I have to agree with Peter. QuoteAnyone, from the most clueless amateur to the…
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n/a | Anders | July 20, 2014, 03:48:15 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Exact same hash function with fewer calculations: http://jsfiddle.net/7TuBy/The…
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n/a | Anders | July 20, 2014, 02:02:07 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Maybe I should explain how my hash function works. Here is an illustration with…
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n/a | Anders | July 20, 2014, 07:06:02 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
Wolfram's computational irreducibility, if exists, defines the perfect proof of…
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n/a | Anders | July 20, 2014, 03:00:28 AM |
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Rule 30 automaton as hash function Development & Technical Discussion
It's easy to generate a collision for my hash function by the fact that the init…
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n/a | Anders | July 19, 2014, 02:44:12 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
Here is a harder problem: Try to find a message that produces the following hash…
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n/a | Anders | July 19, 2014, 03:04:12 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
I don't think this thread is generating much interest because your proposal does…
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n/a | Anders | July 19, 2014, 02:21:20 PM |
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Rule 30 automaton as hash function Development & Technical Discussion
"The notion of Computational Irreducibility (CIR) seems to have been first put f…
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n/a | Anders | July 19, 2014, 11:52:55 AM |
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