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Questions tagged [brain-wallet]

A brain wallet refers to the concept of storing Bitcoins in one's own mind by memorizing a mnemonic recovery phrase. If the mnemonic is not recorded anywhere, the Bitcoins can be thought of as being held only in the mind of the owner. If a brain wallet is forgotten or the person dies or is ...

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How to create a brainwallet with bitcoinjs?

This is how to create a brainwallet with bitcore const Bitcore = require("bitcore-lib"); // const Mnemonic = require("bitcore-mnemonic"); // https://bitcore.io/api/lib/crypto let brainsrc= 'satoshi' ...
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Lost my Bitcoin wallet and have only 11 out of 12 mnemonic seed phrase words. How can I get my Bitcoins?

I am new to the whole Bitcoin thing, and I am having my first attempt almost going sour. I lost where I created my wallet. I have my Bitcoin address and only 11 of my mnemonic seed phrase words (of 12)...
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Benefits of generate address from sha256 hash than random address

Is there any benefits (eg: better security) of generate a address from SHA 256 hash vs generate a random hash? Generate adress from a SHA 256 hash var value = Buffer.from('correct horse battery ...
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Import brainwallet into hardware wallet

I would like to generate a Brain Wallet here. Can I import that wallet (using the passphrase for example) into one of the commercial hardware wallets?
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211 views

How to create Etherium brain address?

I have used bitaddress.org to create a brain wallet for my Bitcoin. Now I would like to create a brain wallet for my Etherium. Is there any reputable tool (preferably similar to bitaddress.org) I can ...
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921 views

Generating a segwit (bc1) address from a brain wallet?

Are there any brain wallet generators that can generate segwit (bc1) addresses yet?
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827 views

The warpwallet challenge 2

here you can find a public challenge aimed to brute force a brain wallet private key, derived from 8 char long [a-zA-Z0-9] passphrase with a salt of "a@b.c". Is it possible to adapt an hashing ...
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5k views

How to generate recovery phrase from private key

I created a brain wallet with a non standard phrase. So I have that, the private and public keys. Now this wallet app wants a 12 word recovery phrase to set up the wallet. How can I convert what I ...
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Cryptocurrency Wallet Seed - mental backup?

Ok, so let's say I use a wallet that gave me a 12 word string as a seed. And I want to do a paper and "mental" backup - will write it down and will memorize the words. Where is the itch? Well, the ...
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437 views

Is there a litecoin / dogecoin scrypt brain wallet generator like the one made for BTC warp wallet?

Has there been other litecoin / dogecoin brain wallet implementations besides bitaddress? I don't feel bitaddress.org's brain wallet generator is secure enough as compared to Warp Wallet scrypt ...
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10k views

How does one create a brain wallet from a seed using SHA256?

How does one create a brain wallet from a seed using SHA256? Is this possible? Could you please explain using the example seed "coinbase is awesome" (no apostrophes)? What is the resulting address?
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352 views

Is there a javascript library for generating litecoin address from a string?

Is there a bitcoinjs equivalent for litecoin? I want to be able to generate a litecoin address using a long string.
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Are there any other brain wallet generators like warp wallet?

I'm looking for brain wallet implementations like warp wallet. Are there other brain wallet implementations that involve stressing the computer in order to generate a bitcoin address?
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Can you combine 2 of 3 brain wallet addresses to form a multi-address?

Is there a way to use 2 of 3 brain wallet addresses to create a multi-signature address? How can this be done? I was hoping to do this with warp wallet if that is possible or not. I'm assuming it ...
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779 views

Private Brain Key Generation and Public Address Not Matching Java

I am trying to generate a public and private key set from a input string in Java. (Yes I am aware this can be a dangerous practice) I am using bitcoinj for a outside library. I currently have: //...
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2k views

Why are brain wallets not secure? People keep saying it, but explain to me why?

Everyone keeps saying brain wallets are insecure. Can someone explain to me WHY? What if I had a brain wallet that is 200 characters long which is the concatenation of all of my family members names ...
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Would it be wise and extra secure to use non-ascii characters in a brain wallet?

What are some pitfalls if you use non-standard ascii characters in your brainwallet? Say if you were to use asian language characters? Or even extended ascii characters (http://www.theasciicode.com.ar/...
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Can you use non-standard characters for creating a Bitcoin Brain Wallet?

Can you use non-standard characters to create a bitcoin brain wallet? Ex. Chinese characters, ascii characters using the numberpad with ALT key. Is there downsides to this?
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What is the max character limit when creating a Bitcoin Brain Wallet?

I'm thinking of using a brain wallet for btc storage. Yes i know all the talk about it being insecure. But what if I used a bunch of information that only I would know making a >100 character brain ...
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Is this brainwallet approach safe enough?

Let's suppose I derive a private-public keypair from a passphrase like this : long_and_complex_enough_but_yet_easy_to_remember_passphrase Now I wish to generate 100 more keypairs using same ...
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1k views

BIP38 or Brain wallet?

I have seen many videos about paper wallets and different ways to store BTC. And I have choose to store using a cold wallet (paper wallet). But I am not sure what option I should choose: a normal ...
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132 views

Compressed keys default for brainwallet?

I'm somewhat confused re compressed addresses... Assuming I were to make a brainwallet using "correct horse battery staple" as my passphrase gives 1JwSSubhmg6iPtRjtyqhUYYH7bZg3Lfy1T (uncompressed ...
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What is the equivalent of cold storage or paper wallet for NXT?

I want to be able to secure my NXT in cold storage. What are some ways of doing this? Since NXT is only accessible via a brain wallet, I can just store the passphrase on a paper, but what if I ...
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216 views

brainwallet.org Low Entropy Generation

I was reading that brainwallet.org uses low-entropy RNGs, so any address generated using their website will be unsafe. I used their website to make a cold storage address last December, and so far no ...
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1k views

Can ASIC miners easily be used to guess brainwallet passphrases?

After reading the Bitcoin wiki page for brainwallets it seems to me that mining equipment can be used to brute force brainwallet passphrases. Is this correct? "...so hackers can collectively try ...
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What if the brain wallet is just a memorable private key itself?

A brain wallet usually applies a hash function on a passphrase to derive the private key. But what if the private key itself is memorable and we just use the private key as the brain wallet? For ...
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Trying to calculate the strength of a brainwallet created with a custom diceware

I want to create a brainwallet using a custom diceware since I don't like the original one. Instead of 7776 words it has 46656 because I use 6 dice for each word instead of 5. So this is what I got ...
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2k views

Is there a way to generate a brain wallet from the command line or console?

Is there complete solution for console to generate brain wallet? Something like: echo "sausage" | xxd -r -p | sha256sum | awk '{print $1}' | rmd160 -x | blablabla I'm read this article: https://en....
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674 views

Are there standardized ways of generating wallets from passphrases?

Brainwallet is a well-known tool that lets you generate an address from a passphrase. I think Brainwallet just performs a single SHA256 hash on the passphrase to get the 256-bit private key of the ...
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208 views

Is there any statistical analysis of the security of a “Brain Wallet”?

Assume that a transaction is paid to a brain wallet address. (not P2SH, or M of N) Is there any statistical approximation (or tiers of approximation) of how secure a Brain Wallet is to A key ...
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636 views

How are brain wallets generated?

How do sites like blockchain.info and bitaddress.org generate private keys by simply hashing a string? (the passphrase?) In this wiki article, https://en.bitcoin.it/wiki/...
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1k views

Compressed or uncompressed for brainwallet?

When creating a brain wallet, should I choose the compressed or uncompressed version? Why? What happens if I choose the uncompressed version (which is what the official client uses, right?), and ...
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Would this wallet backup system work?

I was thinking about a possibility to overcome the 'only stored on one PC' wallet problem! I erase or lose my PC, then I lose all my bitcoins. Suppose that the wallet, associated with an account ...
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How long would it take to crack an 8-word brain wallet?

Assuming my private key for a bitcoin wallet is derived from SHA256(passphrase) and the passphrase is 8 words long, how long would it take the average attacker to crack my bitcoin wallet through a ...
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2k views

How do I consolidate all my BTC into a single address?

I'd like to archive all my coins in a single address (specifically the address for a "brain wallet"). What is the most effective way to combine all the outstanding balances into a given address?
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How safe is a brain wallet?

Edit: The answer is that they are unsafe and have been attacked. Please don't use them! Brain wallets can be created with a (minimum 15 character) pass phrase at https://www.bitaddress.org There are ...