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Author Topic: Vanitygen: Vanity bitcoin address generator/miner [v0.22]  (Read 1148295 times)
elda34b
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January 31, 2019, 04:05:21 AM
 #3641

If we run their program or vanitygen on it, how many keys/s can it archived?

The best answer would be to try it by yourself. Theoretically, it should be faster than CPU/GPU though. Personally I think OCL is fast enough to create an address/key pair. On top of that, we can use split key too. Loyce has a nice tutorial about this.

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dtoan1402
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January 31, 2019, 06:45:01 AM
Last edit: January 31, 2019, 07:50:55 AM by dtoan1402
 #3642

The best answer would be to try it by yourself. Theoretically, it should be faster than CPU/GPU though. Personally I think OCL is fast enough to create an address/key pair. On top of that, we can use split key too. Loyce has a nice tutorial about this.
Why does it has to be split key? I see many ppl rent AWS to run vanitygen for normal key pair but never seen any private key get leak, are there really any incident that VM service stalk on ppl activity to steal key?
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January 31, 2019, 11:02:24 AM
Merited by LoyceV (1)
 #3643

The best answer would be to try it by yourself. Theoretically, it should be faster than CPU/GPU though. Personally I think OCL is fast enough to create an address/key pair. On top of that, we can use split key too. Loyce has a nice tutorial about this.
Why does it has to be split key? I see many ppl rent AWS to run vanitygen for normal key pair but never seen any private key get leak, are there really any incident that VM service stalk on ppl activity to steal key?

AFAIK no, but most VPS services log some of users activity which raises some privacy concern.

It's just a security practice and IMO better safe than sorry. Additionally by split key, even if your VPS got hacked, your full private key won't be leaked.

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January 31, 2019, 11:55:20 AM
 #3644

The best answer would be to try it by yourself. Theoretically, it should be faster than CPU/GPU though. Personally I think OCL is fast enough to create an address/key pair. On top of that, we can use split key too. Loyce has a nice tutorial about this.
Why does it has to be split key? I see many ppl rent AWS to run vanitygen for normal key pair but never seen any private key get leak, are there really any incident that VM service stalk on ppl activity to steal key?

If you generate your own private key it makes no difference as long as you're sure no one else has access to it.

Split key generation is used when someone has the processing power, and wants to generate a vanity address for someone else. None of them know the private key unless they have both split solutions to it.

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February 01, 2019, 02:52:18 AM
Merited by suchmoon (4), ETFbitcoin (2), JayJuanGee (1), xandry (1), LoyceV (1)
 #3645

The best answer would be to try it by yourself. Theoretically, it should be faster than CPU/GPU though. Personally I think OCL is fast enough to create an address/key pair. On top of that, we can use split key too. Loyce has a nice tutorial about this.
Why does it has to be split key? I see many ppl rent AWS to run vanitygen for normal key pair but never seen any private key get leak, are there really any incident that VM service stalk on ppl activity to steal key?

If you generate your own private key it makes no difference as long as you're sure no one else has access to it.

Split key generation is used when someone has the processing power, and wants to generate a vanity address for someone else. None of them know the private key unless they have both split solutions to it.

There's a more simple explanation. Say you generate a key and the private key in base6 looks like

Code:
111112222233333444445555500000111112222233333444445555500000111112222233333444440000011111222223333

That's your half private key (it would be in WIF format most likely). Now someone goes and generates a private key with your partial public key. The private key returned is

Code:
123451234512345123451234512345123451234512345123451234512345123451234512345123451234512345123451234

You add their private key with your private key and boom. You'll see your vanity address that they generated for you. I'm just on a mobile device at the moment so can't calculate the public key or what these two numbers added together would be, but hopefully that's a half decent explaination.
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February 02, 2019, 04:48:47 PM
Merited by KingZee (1)
 #3646

Hello general question:
Are Vanitygen less safe than random Adresses since they were bruteforced?

Im dont have too much knowledge in programming but if Vanitygen would always start a bruteforce from 0000000.. until it finds a match that means that a bruteforce / collider would find those adresses first because they are on the very low end of the private key scale.

Is this assumption correct or are those keys as safe as a totally random one?
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February 02, 2019, 05:08:52 PM
Merited by dbshck (4)
 #3647

Are Vanitygen less safe than random Adresses since they were bruteforced?
No.

Quote
if Vanitygen would always start a bruteforce from 0000000
It doesn't.

Think of it this way: instead of generating 1 random private key, you generate a billion random private keys. Then, you choose the one address you like, and use the private key that belongs to it. In the end, you still end up with a random private key.

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February 03, 2019, 10:23:44 AM
 #3648

Quote
if Vanitygen would always start a bruteforce from 0000000
It doesn't.

Thank you, i thought they all start from the same point instead of always being random from the beginning! That helps
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February 05, 2019, 01:30:04 AM
 #3649

How much processing power do you need to run a vanity generator/miner today? I would guess it will use lots of electricity for the task.
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February 05, 2019, 01:43:14 AM
 #3650

How much processing power do you need to run a vanity generator/miner today? I would guess it will use lots of electricity for the task.

The same processing power you needed from day 1 of bitcoin's existence.

Like people explained above, you're just randomly sweeping through millions of bitcoin addresses to find one that fits your criteria. It doesn't get worse as time goes. In fact, the chance of you colliding and finding a vanity address someone else used probably went up by a micro-nano-milli-trillion zeroes percent, so good luck!

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February 05, 2019, 02:53:33 AM
Merited by xhomerx10 (1), LoyceV (1)
 #3651

How much processing power do you need to run a vanity generator/miner today? I would guess it will use lots of electricity for the task.

You can use any device, but some are faster than others. My A8-7410 laptop CPU searches through ~200kkeys/sec, my Ryzen 5 1600 @ 3.7 GHz searches through ~2Mkeys/sec, and my GTX 1060 3 GB searches through ~40Mkey/sec.

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February 05, 2019, 05:00:55 AM
 #3652

-snip- my GTX 1060 3 GB searches through ~40Mkey/sec.
What is the Operating System that you're using?
It's usually 30~ish Mkey/sec for me on a 1060 (Windows7 SP2 updated with drivers).

@martinadoulet The question is how long you're willing to wait for the result; talking about processing power, even a Core2Duo™ is enough to make a personalized 4-1st-characters vanitygen address within an hour or less if you're lucky. And that's way below the power consumption of an AC.

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February 05, 2019, 11:10:44 PM
 #3653

-snip- my GTX 1060 3 GB searches through ~40Mkey/sec.
What is the Operating System that you're using?
It's usually 30~ish Mkey/sec for me on a 1060 (Windows7 SP2 updated with drivers).

Windows 10 Pro build 17134, Nvidia's latest Game Ready drivers (v418.81) and the Lifeboat version of oclvanitygen. I'm also running an EVGA GTX 1060 SC which is a bit higher clocked than stock cards (1.607 GHz base/1.835 GHz boost versus stock at 1.506 GHz base/1.708 GHz boost) which could account for the differences.

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February 06, 2019, 08:39:27 AM
 #3654

-snip- my GTX 1060 3 GB searches through ~40Mkey/sec.
What is the Operating System that you're using?
It's usually 30~ish Mkey/sec for me on a 1060 (Windows7 SP2 updated with drivers).

Windows 10 Pro build 17134, Nvidia's latest Game Ready drivers (v418.81) and the Lifeboat version of oclvanitygen. I'm also running an EVGA GTX 1060 SC which is a bit higher clocked than stock cards (1.607 GHz base/1.835 GHz boost versus stock at 1.506 GHz base/1.708 GHz boost) which could account for the differences.


Anyone tried to run on W10 and AMD cards maybe?

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February 07, 2019, 09:55:46 PM
 #3655

the hole vanity shit is a bad idea! Always use a new address to send and always a new to receive. -- END --

That is Bitcoin! All other use is stupid!

each time you send a transaction don't forget to use a new address, each time you receive one also!
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February 08, 2019, 04:09:09 PM
Merited by jacktheking (1), joniboini (1)
 #3656

the hole vanity shit is a bad idea! Always use a new address to send and always a new to receive. -- END --

That is Bitcoin! All other use is stupid!
Well, I disagree here, at least to the first part. And in my opinion, there a quite a few very good use cases for vanity addresses or at least where it makes no difference to use a vanity address or not. I don't see a problem to receive small donations or signature campaign rewards to a vanity address, where your address is public on the site / forum anyways. Or it's a good thing to use it on Bitcointalk to stake your Bitcoin address and secure your account in case you get hacked. For doing so you don't even have to send Bitcoin to this vanity address.

Even if you are not planning to use your vanity address it's a very good way for everyone to get a feeling how impossible it is to guess (brute-force) another private key. Everyone can try it on his own device.

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February 25, 2019, 09:59:57 AM
Last edit: February 26, 2019, 03:59:35 AM by dtoan1402
 #3657

I try to modify vanitygen & notice this

Code:
const BN_ULONG rekey_max = 10000000;
BN_ULONG npoints, rekey_at, nbatch;


We can increase rekey_max  to increase the hashes between random new key and decrease to generate more new random keys. As default, it calculate 10000000 keys before generate a new RNG private key again on CPU & 100000000 on GPU. When i try to set rekey_at to 1 to make it generate new privkey everytime, the keyrates drop as well, from 1.3mkey/s to 100-200keys/s & it didn't even use 100% of CPU power. How we make it generate new RNG random seed all the time instead of hash keys from seeds?
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April 01, 2019, 10:38:52 AM
 #3658

I tried this a long while ago but ran into troubles on Mac when trying oclvanitygen.

Samr7 stopped development of vanitygen, what is currently the best github repo to get a version that works on Mac?
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April 24, 2019, 02:45:34 AM
 #3659

Have anybody try to run vanitygen on Google's TPU cloud machine or any HPC service? What's the best keysearch rates has it archive so far? Huh
Why would you run it online? It is risky to do that because your data could be intercepted.
You should run vanitygen offline on a secure computer. Using OpenCL is fast enough for me.
I think his point is Google's TPU or HPU can generate vanity address at faster rate. While it's true that the information could be intercepted, using encrypted connection could solve the problem.
Using split key is a much better solution, so that Google itself can't know your private key either. They can still know you generated the address through.
I totally forget about split key. But google knowing user generate vanity address doesn't matter unless you could know bitcoin address just from partial private key, brute force to get private from an address with partial private key or have serious privacy concern.

Here is an old thread from 2012 where we all discussed how outsourcing vanity address generation could be done.  The math is discussed there if you want to read up on it.

Later, most of us in the thread gave up on the idea since anyone who cares about fungibility wants to get rid of address reuse all together.  Ideally all addresses would get used exactly two times:  once to fund it and once to spend it.

This flies in the face of the entire concept of vanity address generation.

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May 11, 2019, 03:46:44 PM
 #3660

So anyways, I've solved 1BruJoLoKo while searching for a lot of other prefixes:

1BruJoLoKozkJmSktkYUhxZiwj8R7ShaED

PM me if interested, I have the private key (just not part private key)



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