Bitcoin Forum
December 08, 2016, 04:16:22 PM *
News: To be able to use the next phase of the beta forum software, please ensure that your email address is correct/functional.
 
   Home   Help Search Donate Login Register  
Pages: « 1 2 [3]  All
  Print  
Author Topic: Possible solution for recovering lost Bitcoin to the "blackhole".  (Read 3845 times)
kjj
Legendary
*
Offline Offline

Activity: 1302



View Profile
January 12, 2012, 07:57:28 PM
 #41

The only cryptographic algo that is provablely secure from brute force forever is the simple Vernon Cypher, which has no applications here.

Is that known by another name? Searching Google and Wikipedia for "vernon cypher" didn't return useful results.

It is a one time pad.  It requires one bit of key for each bit of message, and no key bits are related so all potential decodes are equally likely.  Just make sure that the key bits really are unrelated.  That is, you must a have a real source of randomness like a geiger counter, not just pseudorandomness, otherwise the PRNG seed is the real key.

p2pcoin: a USB/CD/PXE p2pool miner - 1N8ZXx2cuMzqBYSK72X4DAy1UdDbZQNPLf - todo
I routinely ignore posters with paid advertising in their sigs.  You should too.
1481213782
Hero Member
*
Offline Offline

Posts: 1481213782

View Profile Personal Message (Offline)

Ignore
1481213782
Reply with quote  #2

1481213782
Report to moderator
1481213782
Hero Member
*
Offline Offline

Posts: 1481213782

View Profile Personal Message (Offline)

Ignore
1481213782
Reply with quote  #2

1481213782
Report to moderator
Advertised sites are not endorsed by the Bitcoin Forum. They may be unsafe, untrustworthy, or illegal in your jurisdiction. Advertise here.
westkybitcoins
Legendary
*
Offline Offline

Activity: 980

Firstbits: Compromised. Thanks, Android!


View Profile
January 12, 2012, 08:30:04 PM
 #42

The only cryptographic algo that is provablely secure from brute force forever is the simple Vernon Cypher, which has no applications here.

Is that known by another name? Searching Google and Wikipedia for "vernon cypher" didn't return useful results.

It is a one time pad.  It requires one bit of key for each bit of message, and no key bits are related so all potential decodes are equally likely.  Just make sure that the key bits really are unrelated.  That is, you must a have a real source of randomness like a geiger counter, not just pseudorandomness, otherwise the PRNG seed is the real key.

Thanks. I have heard of the one-time pad, and understand why it's uncrackable (and why it's rarely used.)

Didn't remember the name of the man (Vernam, thanks Epoch) who co-developed it.

Bitcoin is the ultimate freedom test. It tells you who is giving lip service and who genuinely believes in it.
...
...
In the future, books that summarize the history of money will have a line that says, “and then came bitcoin.” It is the economic singularity. And we are living in it now. - Ryan Dickherber
...
...
ATTENTION BFL MINING NEWBS: Just got your Jalapenos in? Wondering how to get the most value for the least hassle? Give BitMinter a try! It's a smaller pool with a fair & low-fee payment method, lots of statistical feedback, and it's easier than EasyMiner! (Yes, we want your hashing power, but seriously, it IS the easiest pool to use! Sign up in seconds to try it!)
...
...
The idea that deflation causes hoarding (to any problematic degree) is a lie used to justify theft of value from your savings.
malevolent
can into space
Staff
Legendary
*
Offline Offline

Activity: 1624



View Profile
January 23, 2012, 10:11:46 PM
 #43

Is the system designed so that the total amount of BTC in circulation does not exceed 21m or it will always be below that figure?
From what I've read 21m is an asymptote meaning total BTC will always be nearing this number but never reaching.
SgtSpike
Legendary
*
Offline Offline

Activity: 1344



View Profile
January 23, 2012, 10:14:43 PM
 #44

Is the system designed so that the total amount of BTC in circulation does not exceed 21m or it will always be below that figure?
From what I've read 21m is an asymptote meaning total BTC will always be nearing this number but never reaching.
I must admit I do not know if it will be 21M on the dot, or some fractional number around it.  But does it really matter if it's 21M, or 20.999M?
kjj
Legendary
*
Offline Offline

Activity: 1302



View Profile
January 23, 2012, 10:46:02 PM
 #45

The exact number, assuming we don't extend the unit size beyond 1E-8, will be 20,999,999.9769.

The subsidy shifts out of a 64 bit integer.  If we change to a 128 bit representation, there will be a miniscule extra amount.

p2pcoin: a USB/CD/PXE p2pool miner - 1N8ZXx2cuMzqBYSK72X4DAy1UdDbZQNPLf - todo
I routinely ignore posters with paid advertising in their sigs.  You should too.
fb39ca4
Jr. Member
*
Offline Offline

Activity: 42


View Profile
January 24, 2012, 12:11:46 AM
 #46

I like the idea of going with the metric system for naming smaller amounts of BTC.
Pages: « 1 2 [3]  All
  Print  
 
Jump to:  

Sponsored by , a Bitcoin-accepting VPN.
Powered by MySQL Powered by PHP Powered by SMF 1.1.19 | SMF © 2006-2009, Simple Machines Valid XHTML 1.0! Valid CSS!