Can a bitcoin address can be recovered from public key??? - page 2.

NorrisK

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Quote from: CIYAM on October 13, 2015, 11:29:12 PM

Quote from: VirosaGITS on October 13, 2015, 04:42:47 PM

No it is not.

Yes it is - do you understand that the question does not mention "private key" but instead "public key" or did you simply not read it?

Quote from: VirosaGITS on October 13, 2015, 04:42:47 PM

It is a mess but if you put information like that, you will just cause confusion, and thus, a mess.

Unfortunately it is you (and most other posters in this topic) that are causing the mess and confusion by not even bothering to read the OP.

To the @OP - unfortunately this is why this forum is no longer very useful for any sort of technical advice. Sad

Looks like you are the only one to actually read the question indeed.

I think people just automatically assume private key whenever someone starts talking about recovering something from an address.

shorena

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No I dont escrow anymore.

Can we rename the thread wall of shame please?

Djisamsoe

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no wa,public key as i know just can move some bitcoin from other wallet.

TastyChillySauce00

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thats impossible ,as i read on blockchain TOS (CMIIW) , if you lose your address and forgot to backup , than you lose your money

dothebeats

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Quote from: VirosaGITS on October 13, 2015, 04:42:47 PM

Quote from: Klestin on October 13, 2015, 04:11:18 PM

Holy hell, will people please read replies before adding to the mess?

Short answer: Yes, of course a bitcoin address can be recovered from a public key.

Longer answer: See replies by pjsonowal.

No it is not. A public key can not be reverse engineered back to its privkey and you cannot actually recover a privkey using bruteforce. It is a mess but if you put information like that, you will just cause confusion, and thus, a mess.

Yes, it can be. Try reading some posts before you and the question in OP.

As for Evil-Knievel, I've seen him plenty of times here in this forum conducting bounties for certain projects related to bitcoin's cryptography. On the linked thread, he attacked the weak addresses present on the curve, but I'll doubt that he would continue on doing that and actually break the code.

CIYAM

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Quote from: VirosaGITS on October 13, 2015, 04:42:47 PM

No it is not.

Yes it is - do you understand that the question does not mention "private key" but instead "public key" or did you simply not read it?

Quote from: VirosaGITS on October 13, 2015, 04:42:47 PM

It is a mess but if you put information like that, you will just cause confusion, and thus, a mess.

Unfortunately it is you (and most other posters in this topic) that are causing the mess and confusion by not even bothering to read the OP.

To the @OP - unfortunately this is why this forum is no longer very useful for any sort of technical advice. Sad

jonald_fyookball

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Core dev leaves me neg feedback #abuse #political

Most bitcoin users never need to worry about publickey.

VirosaGITS

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Quote from: Klestin on October 13, 2015, 04:11:18 PM

Holy hell, will people please read replies before adding to the mess?

Short answer: Yes, of course a bitcoin address can be recovered from a public key.

Longer answer: See replies by pjsonowal.

No it is not. A public key can not be reverse engineered back to its privkey and you cannot actually recover a privkey using bruteforce. It is a mess but if you put information like that, you will just cause confusion, and thus, a mess.

Klestin

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Holy hell, will people please read replies before adding to the mess?

Short answer: Yes, of course a bitcoin address can be recovered from a public key.

Longer answer: See replies by pjsonowal.

Omikifuse

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In theory no, because the odds of collision would be the same as an meteor destroy earth in the next seconds.

But if your random number generator is broken, maybe

LFC_Bitcoin

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Quote from: hunnaryb on October 13, 2015, 11:26:30 AM

Its not impossible, its just very very low probability

^^

This.

One of the reasons bitcoin is such a pioneering invention/discovery is because of it's unique security features. Bitcoin would be pointless if you could easily crack a wallets contents by using the public key.

sana9821

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i really doubt that it is possible at least not with the computers that we have nowadays if we would be able to do that wouldnt bitcoins be not safe?

lightenx

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Crackning a private key.... against the Universe, Satoshi and Bitcoin. Whichever tools you find, they will be all fake.

aakashsangwan

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i dont think so that you can recover your bitcoin address from your public key, their is security options and 2fa security with this you can recover your bitcoin address.

kingcolex

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Quote from: pjsonowal on October 13, 2015, 12:51:38 PM

Quote from: kingcolex on October 13, 2015, 12:47:24 PM

The only way you could do such a thing is if you know the public key originated from a brain wallet and you are able to figure out the words used on the wallet by possibly being very close to that person.

So thats why brainwallet is closed permanently for these security issues...

That and people think they are smart and pick a song lyric or a phrase and shove some btc on it and lo and behold someone figures a brain wallet may just have the lyrics of a popular song as the phrase.

pjsonowal

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Quote from: shorena on October 13, 2015, 12:51:16 PM

Quote from: CIYAM on October 13, 2015, 11:58:49 AM

Quote from: pjsonowal on October 13, 2015, 11:13:00 AM

Can a bitcoin address can be recovered from public key... If not so how is it related to bitcoin address???

It seems that those replying so far do not understand the difference between a public and a private key.

The answer is *of course* a Bitcoin address can be determined from a public key as it is basically just a base58 formatted version of a cryptographic hash of the public key.

What you can't do is go from the Bitcoin address back to the public key (as cryptographic hashes are not reversible) and the public key of course can't be used to do anything like a tx without also having the private key (which cannot be determined from it).

This[1] was so painfull to read, but to see the replies just continue...

Edit:

This is a public key: 0489AD08CA699563497B8F92AFE2252CBCBD5B2381C9E9E64C716B144BEE44B6E4B756B7AD5A17B 21E4D707694D182802A6C1285343C9BE48543F7FCEF54B7128D
There are two possible addresses for this.

Code:

addr 1: 12qjzbJipzAhLxjmLyAJG1dPMp8LhsaH9d
addr 2: 18eRS1oy9S6AEm55sK46bYtssRBRGM3dvg

This is how you get from the one to the other:

What you need to spend is the private(!) key.

[1] The rest of the thread not your reply.

hmmm.. that certainly answers my question...thanxxx your replies were worthy for me ..thnx for sharing some knowledge Tongue

pjsonowal

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Quote from: kingcolex on October 13, 2015, 12:47:24 PM

The only way you could do such a thing is if you know the public key originated from a brain wallet and you are able to figure out the words used on the wallet by possibly being very close to that person.

So thats why brainwallet is closed permanently for these security issues...

shorena

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No I dont escrow anymore.

Quote from: CIYAM on October 13, 2015, 11:58:49 AM

Quote from: pjsonowal on October 13, 2015, 11:13:00 AM

Can a bitcoin address can be recovered from public key... If not so how is it related to bitcoin address???

It seems that those replying so far do not understand the difference between a public and a private key.

The answer is *of course* a Bitcoin address can be determined from a public key as it is basically just a base58 formatted version of a cryptographic hash of the public key.

What you can't do is go from the Bitcoin address back to the public key (as cryptographic hashes are not reversible) and the public key of course can't be used to do anything like a tx without also having the private key (which cannot be determined from it).

This[1] was so painfull to read, but to see the replies just continue...

Edit:

This is a public key: 0489AD08CA699563497B8F92AFE2252CBCBD5B2381C9E9E64C716B144BEE44B6E4B756B7AD5A17B 21E4D707694D182802A6C1285343C9BE48543F7FCEF54B7128D
There are two possible addresses for this.

Code:

addr 1: 12qjzbJipzAhLxjmLyAJG1dPMp8LhsaH9d
addr 2: 18eRS1oy9S6AEm55sK46bYtssRBRGM3dvg

This is how you get from the one to the other:

What you need to spend is the private(!) key.

[1] The rest of the thread not your reply.

kingcolex

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Merit: 1258

The only way you could do such a thing is if you know the public key originated from a brain wallet and you are able to figure out the words used on the wallet by possibly being very close to that person.

Ceizer54

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Quote from: pjsonowal on October 13, 2015, 11:13:00 AM

Can a bitcoin address can be recovered from public key... If not so how is it related to bitcoin address???

You can't recover bitcoins using public key as the name suggest it's a public key and you are allowed to share it with anyone...But every bitcoin address do have private key too which is required to recover your wallet and address and without it you can't recover yoir account..you can't just guess the private key and brute forcing is next to impossible because private key is very long in length..

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