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Vanity address generator bitcoin

Содержание
  1. Vanitygen
  2. Contents
  3. Vanity Number Generator [ edit ]
  4. Expected keysearch rate [ edit ]
  5. Use of vanitygen to try to attack addresses [ edit ]
  6. Vanitygen
  7. Contents
  8. Expected keysearch rate
  9. Difficulty of finding a vanity address
  10. Using a vanity address generator to try to attack addresses
  11. Vanity Address
  12. How do they do that?
  13. How it works
  14. Vanitygen
  15. Use of vanitygen to try to attack addresses

Vanitygen

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Vanitygen is a command-line vanity bitcoin address generator.

If you’re tired of the random, cryptic addresses generated by regular bitcoin clients, you can use vanitygen to create a more personalized address. Add unique flair when you tell people to send bitcoins to 1stDownqyMHHqnDPRSfiZ5GXJ8Gk9dbjO . Alternatively, vanitygen can be used to generate random addresses offline.

Contents

Vanity Number Generator [ edit ]

Vanitygen accepts as input a pattern, or list of patterns to search for, and produces a list of addresses and private keys. Vanitygen’s search is probabilistic, and the amount of time required to find a given pattern depends on how complex the pattern is, the speed of your computer, and whether you get lucky.

The example below illustrates a session of vanitygen. It is typical, and takes about 10 sec to finish, using a Core 2 Duo E6600 CPU on x86-64 Linux:

Vanitygen includes components to perform address searching on your CPU (vanitygen) and your OpenCL-compatible GPU (oclvanitygen). Both can be built from source, and both are included in the Windows binary package. Also included is oclvanityminer, the vanity address mining client. Oclvanityminer can be used to automatically claim bounties on sites such as ThePiachu’s Vanity Pool [1] .

Current version: 0.22

Windows x86+x64 binaries here. PGP signature here.

Get the source from GitHub. Includes Makefiles for Linux and Mac OS X.

The latest source doesn’t work properly for high-end AMD cards (7XXX and greater). Solution is to change line 459 in oclengine.c from: return quirks; to: return quirks &

VG_OCL_AMD_BFI_INT; Windows x86+x64 binaries that solve this problem plus provide support for compressed keys here. PGP signature here. If you have any problems with the binaries, join the relevant BitcoinTalk discussion.

Expected keysearch rate [ edit ]

What key search rate can I expect from hardware X?

CPU GPU keys/s Comment
Core i5 750 @2.67 GHz nVidia GTS 250 1.54 Mkey/s 110% CPU [1]
Core2 Duo 6600 nVidia GTX 285 3.5 Mkey/s 100% CPU / 90% GPU [2]
Sempron 140 AMD 5830 5.5 Mkey/s 100% CPU / 60% GPU [3]
AMD Radeon r7 240 4 Mkey/s [4]
Core i7 AMD 6500M 4.5 Mkey/s 98% GPU
nVidia GeForce GTX 680M 14-16 Mkey/s [5]
nVidia GeForce GTX 970 38 Mkey/s [6]
Core i7-4702MQ 2.2GHz 1.09 Mkey/s
Core i7-4702MQ 2.2GHz GeForce GT750M 5.38 Mkey/s
AMD Radeon r9 280x 25-35 Mkey/s
Sapphire Radeon HD 7970 28Mkey/s [7]
AMD Radeon HD 5870 30 Mkey/s [8]
Asus Strix GTX 970 40Mkey/s [9]
nVidia GeForce GTX 780 Ti (3GB 384-bit GDDR5) 50-60 Mkey/s [10]
Core i5-2500K @ 3.30GHz AMD RX 480 57-64 Mkey/s With AMD patch [11]

As vanitygen performs a lot of large integer arithmetic, running it in 64-bit mode makes a huge difference in key search rate, easily a 50% improvement over 32-bit mode. If you are using a 64-bit edition of Windows, and not using a GPU, be sure to use vanitygen64.exe.

Radeon 58XX outperforms Radeon 69XX by a very comfortable margin. Oclvanitygen is sensitive to integer multiply throughput, and Radeon 58XX can multiply concurrently with other operations. At similar clocks, a hobbled Radeon 5830 will outperform a Radeon 6970 [2] .

In custom builds, CPU performance will be less than expected if the OpenSSL library is an older version ( Difficulty of finding a vanity [ edit ]

The difficult of finding a vanity address depends on its exact structure (leading letters and numbers) and how likely such an output is given the algorithms involved, which can consist of several pivots where the difficulty suddenly changes.

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vanity difficulty Comment
1AAAAA 259,627,881
1QLbz6 259,627,881 This vanity is alphabetically before a major pivot, the RIPEMD-160 hash value of 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (address: 1QLbz7JHiBTspS962RLKV8GndWFwi5j6Qr)
1QLbz7JHiBTspS962RLKV8GndWE 2.9597E+45
1QLbz7 837,596,142 This vanity is partially after a pivot and difficulty increases
1QLbz7JHiBTspS962RLKV8GndWG 1.6489E+47 After a major pivot and 59 times as difficult as the ‘E’ vanity.
1QLbz8 837,596,142
1aaaaa 15,318,045,009 Well after various pivots and subsequently more difficult.
1zzzzz 15,318,045,009
111111 1,099,511,627,776 A special case, leading numbers 1 (one) is especially difficult.

Use of vanitygen to try to attack addresses [ edit ]

Using vanitygen you might think that you would be able to find the private key for a given address. In practice, this is considered impossible. Given that the difficulty increases exponentially the longer your vanity is, so does the average time required to find that vanity. The example table below shows how an increasingly complex vanity affects the difficulty and average time required to find a match only for that vanity, let alone the full address, for a machine capable of looking through 1 million keys per second.

vanity difficulty average time
1B 22 Outsourcing your Vanity Address Generator [ edit ]

The safest option to calculate your vanity address is always to calculate it yourself. Though for larger patterns, you might not have enough resources or time to calculate this. In this case you can choose to outsource your vanity address generation to a Bitcoin Vanity Generation Website. In this case you always have to be very careful and you have to make sure you never trust your full private key to any third party. The best and safest manner how to outsource this vanity address generation is by using split-key address generation.

Источник

Vanitygen

Vanitygen was the first command-line vanity Bitcoin address generator. A few other vanity address generators exist including Vanitygen-plus and VanitySearch.

If you’re tired of the random addresses generated by regular Bitcoin clients, you can use a vanity address program to create a more personalized address. For example, you could create an address that starts ‘1Satoshi’ and ask people to send Bitcoin to 1SatoshiHHqnDPRSfiZ5GXJ8Gk9dbjO.

Vanity address programs accept as input a pattern (e.g. 1Bitcoin) and create a public address and private key. The amount of time required to find a given pattern depends on how complex the pattern is, the speed of the computer, whether it is using CPU or GPU, and if you get lucky.

The example below (from 2014) illustrates a session of vanitygen. It takes about 10 seconds to create the new public and private keys using a Core 2 Duo E6600 CPU on x86-64 Linux.

Please note that vanitygen is a legacy program and that the information below is provided for historical purposes.

Vanitygen includes components to perform address searching on a CPU (vanitygen) and OpenCL-compatible GPU (oclvanitygen). Both can be built from source and are included in the Windows binary package. Also included is oclvanityminer, the vanity address mining client. Oclvanityminer can be used to automatically claim bounties on sites such as ThePiachu’s Vanity Pool.

Current version: 0.22.

Windows x86+x64 binaries here. PGP signature here.

Get the source from GitHub. Includes Makefiles for Linux and Mac OS X.

Main discussion at BitcoinTalk.

The latest source doesn’t work properly for high-end AMD cards (7XXX and greater). The solution is to change line 459 in oclengine.c from: return quirks; to: return quirks &

Windows x86+x64 binaries that solve this problem plus provide support for compressed keys here. PGP signature here. If you have any problems with the binaries, join the relevant BitcoinTalk discussion.

Contents

Expected keysearch rate

The table below shows the key search rate one can expect from different hardware. The last five examples, which use GPU processors, were taken from DaveF’s list of speeds that can be achieved with the VanitySearch address generator.

CPU GPU keys/s Comment
Core i5 750 @2.67 GHz nVidia GTS 250 1.54 Mkey/s 110% CPU [1]
Core2 Duo 6600 nVidia GTX 285 3.5 Mkey/s 100% CPU / 90% GPU [2]
Sempron 140 AMD 5830 5.5 Mkey/s 100% CPU / 60% GPU [3]
AMD Radeon r7 240 4 Mkey/s [4]
Core i7 AMD 6500M 4.5 Mkey/s 98% GPU
nVidia GeForce GTX 680M 14-16 Mkey/s [5]
nVidia GeForce GTX 970 38 Mkey/s [6]
Core i7-4702MQ 2.2GHz 1.09 Mkey/s
Core i7-4702MQ 2.2GHz GeForce GT750M 5.38 Mkey/s
AMD Radeon r9 280x 25-35 Mkey/s
Sapphire Radeon HD 7970 28Mkey/s [7]
AMD Radeon HD 5870 30 Mkey/s [8]
Asus Strix GTX 970 40Mkey/s [9]
nVidia GeForce GTX 780 Ti (3GB 384-bit GDDR5) 50-60 Mkey/s [10]
Core i5-2500K @ 3.30GHz AMD RX 480 57-64 Mkey/s With AMD patch [11]
GeForce GTX 1060 3GB (9×128 cores) Grid(72×128) 322 Mkey/s [12]
GeForce GTX 1080 Ti (28×128 cores) Grid(224×128) 896 Mkey/s [13]
EVGA RTX 2080 XC ULTRA 1425 Mkey/s [14]
GPU #0 Tesla V100-SXM2-16GB (80×64 cores) Grid(640×128) 1815 Mkey/s [15]
GPU #0 GeForce RTX 2080 SUPER (48×64 cores) Grid(384×256) 2002 Mkey/s [16]

Difficulty of finding a vanity address

The difficult of discovering a Bitcoin vanity address depends on its exact structure (what are the leading letters or numbers) and how likely such an output is given the algorithms involved, which can consist of several pivots where the difficulty suddenly changes.

vanity difficulty Comment
1AAAAA 259,627,881
1QLbz6 259,627,881 This vanity is alphabetically located before a major pivot, the RIPEMD160 hash value of 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF (address: 1QLbz7JHiBTspS962RLKV8GndWFwi5j6Qr).
1QLbz7JHiBTspS962RLKV8GndWE 2.9597E+45
1QLbz7 837,596,142 This vanity is partially after a pivot and thus the difficulty increases.
1QLbz7JHiBTspS962RLKV8GndWG 1.6489E+47 After a major pivot and 59 times as difficult as the ‘E’ vanity.
1QLbz8 837,596,142
1aaaaa 15,318,045,009 After various pivots and subsequently more difficult.
1zzzzz 15,318,045,009
1abcdef 888,446,610,539 Six characters case sensitive starting with a lower case character.
111111 1,099,511,627,776 A special case: leading number 1 (one) is especially difficult.
1abcdefg 51,529,903,411,245 Seven characters case sensitive starting with a lower case character.
1abcdefgh 2,988,734,397,852,220 Eight characters case sensitive starting with a lower case character.

Using a vanity address generator to try to attack addresses

You might think that you would be able to find the private key for a given address by running a vanity address generator. In practice, this is considered impossible. Given that the difficulty increases exponentially the longer your vanity is, so does the average time required to find that vanity. The table below shows how an increasingly complex vanity affects the difficulty and average time required to find a match only for that vanity, let alone the full address, for a machine capable of looking through one million keys per second.

Note that many GPU implementations currently (March 2020) allow up to 1,000 Mkeys/s (or more). For example Bitcoin-Uni uses VanitySearch to search more than 7,000 Mkeys/s.

vanity difficulty average time
1B 22 Outsourcing vanity address generation

The standard way to generate a vanity address is to calculate it yourself by downloading the program and then running it on your system. However, for longer prefixes, you are unlikely to have enough computational resources or time to calculate them. In these cases, you can outsource your vanity address generation to a Bitcoin Vanity Generation Website. A good idea is to use split-key address generation.

Источник

Vanity Address

Bitcoin addresses are identifiers using alphanumeric characters that aren’t always recognisable at first glance. To encourage public acceptance, we should facilitate whatever can be facilitated.

Moreover, the vision of this sequence of numbers and letters can be strongly repulsive for people with no knowledge of cryptography. Generating your own address through Vanity is not really complicated and even fun. That’s why you have to do this yourself rather than using a third-party service. The main reason is always the same. For one trusted site you will find nine who will try to rip you off. So if you do not believe that you have sufficient knowledge to detect a scam, it would be best to go back.

How do they do that?

Scam sites offer you to enter a string of characters and run the tests to find an address with a shape of the desired character string. For example, you want your address to start by 1Bet because you have a betting site. The site gives you

1Betx42BCrgrt56fgFrgkr4dfXer3gmIEf and the private keys of this address!

Then, the public address and its private key will be registered in their database of the site and therefore will have an instant access to your funds! Your Bitcoins will be in danger if you import the given address on your Bitcoin wallet.
The safe way to use vanity is to use the Vanity open source software and its command line. For more information, please take a look here: https://en.bitcoin.it/wiki/Vanitygen

How it works

First important thing, Vanity works only with existing bitcoin wallets. If you don’t have one yet, it’s time to take the big step forwards.

If you have one, run your command line.Vanitygen takes as input data from the model or model list, after which it takes address options and private keys. Vanitygen selection is based on probabilistic research, which takes a certain amount of time. The time depends on the complexity of the model setpoint, the speed of your computer and your luck.

Then, you are able to tape your pattern. In your example it is 1Bet. It should be noted that in the line you can not use 0 (zero), O (large o), I (large i), l (small L), and it must start with 1 (one unit).

Once your pattern is entered as input data, Vanity start his search. Please note that it’s probably not worth looking for long strings, in order to shorten processing times. The final result will be something like this:

(Note that an ‘easy’ string to find like this does not mean that specific private key can be guessed easily .)

Vanitygen

Vanitygen is a command-line vanity bitcoin address generator.

If you’re tired of the random, cryptic addresses generated by regular bitcoin clients, you can use vanitygen to create a more personalized address. Add unique flair when you tell people to send bitcoins to 1stDownqyMHHqnDPRSfiZ5GXJ8Gk9dbjO. Alternatively, vanitygen can be used to generate random addresses offline.

Vanitygen accepts as input a pattern, or list of patterns to search for, and produces a list of addresses and private keys. Vanitygen’s search is probabilistic, and the amount of time required to find a given pattern depends on how complex the pattern is, the speed of your computer, and whether you get lucky.

The example below illustrates a session of vanitygen. It is typical, and takes about 10 sec to finish, using a Core 2 Duo E6600 CPU on x86-64 Linux:

Vanitygen includes components to perform address searching on your CPU (vanitygen) and your OpenCL-compatible GPU (oclvanitygen). Both can be built from source, and both are included in the Windows binary package.

Current vanitygen version: 0.21

Get the source from includes Makefiles for Linux and Mac OS X.

Main discussion at Bitcointalk

Use of vanitygen to try to attack addresses

Using vanitygen you might think that you would be able to find the private key for a given address. In practice, this is considered impossible. Given that the difficulty increases exponentially the longer your vanity is, so does the average time required to find that vanity. The example table below shows how an increasingly complex vanity affects the difficulty and average time required to find a match only for that vanity, let alone the full address, for a machine capable of looking through 1 million keys per second.

Источник

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