Questions tagged [private-key]

This tag should be used for questions pertaining to private keys. Private keys are used for signing transactions and allow the holder of the private key to spend the Bitcoin associated with the address derived from the private key.

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35 views

Is OP_RETURN dangerous for Bitcoin?

Please explain something about OP_RETURN to me? https://bitcointalk.org/index.php?topic=1166928.0 I saw a discussion that the contents of OP_RETURN can open the value of access to the private key. I ...
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1answer
17 views

Can two bitcoin transactions from a Segwit address (p2sh-p2wpkh) have a reused R value?

Good day. I'd found these two transactions: https://www.blockchain.com/es/btc/tx/2b08d658045724aba40b58690ad84ec2af1f01ab58df37387dadd2b27789f44c and https://www.blockchain.com/es/btc/tx/...
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1answer
37 views

Bitcoin i have been asked to send money for a private key [duplicate]

Hi i have been asked to send money for funds that are nonspendable to receive a private key to unlock it, it's from bitcoin investing. How safe is this as i'm worried i wont receive the payment. It's ...
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2answers
33 views

Who store seed phrases data

Seed phrases seem to be pretty secure, approximately as strong as bitcoin private key according to this site https://en.bitcoin.it/wiki/Seed_phrase. But who store the private key adresses of these ...
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1answer
40 views

What does a Bitcoin lightning private key look like?

I know bitcoin private keys start with a 5... But how does a lightning bitcoin private key look like? Say I wanted to printed it out as a paper wallet.
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53 views

Bitcoin Private Key Decryption

At present, I have dumped my wallet and have all private key, address information. I am now wanting to understand the decryption process for the private keys within the wallet. I have completed the ...
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20 views

At what step does the private key is transformed to mnemonic phrase [duplicate]

If I am correct to make a private key you have to first generate a random 256 bit number then transform it to a WIF private key using base 58 check encode, does the mnemonic phrase is generated from ...
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1answer
64 views

Bitcoin private key and address generator in golang

I am looking for a golang alternative to https://github.com/richardkiss/pycoin . So far I have found https://github.com/btcsuite/btcd but have not figured out how to generate private keys and ...
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1answer
58 views

What prevent a smartphone wallet from downloading my keys

Wallet software use variant technologies to protect and hide our private keys like mnemonic or simply using the private keys. What would prevent them from making a patch to their software that will ...
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1answer
50 views

Convert private key to integer

I have a random private key (compressed or uncompressed) 5HpHagT65TZzG1QDbnQCzdudnpknN7nA1SLEt4ZcxsH2SV92yqt or KwDiBf89QgGbjEmUcXPRwPuKPFnFECvJkvovGNiyjaujMCrQXy98. How do I convert this private key ...
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1answer
84 views

Convert EC PRIVATE KEY from .pem into WIF

I have a openssl generated private key in the following form: $ cat priv.pem -----BEGIN EC PARAMETERS----- BgUrgQQACg== -----END EC PARAMETERS----- -----BEGIN EC PRIVATE KEY----- ...
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Bitcoin Core Question, Initialization Vector

I am reviewing Bitcoin Core source code. I am following the code which states take a double sha 256 of the public key to get the IV and use the master key for the encryption key for encrypted wallet....
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1answer
100 views

How does BIP 39 mnemonic work?

As I already understood the mnemonics are the private key separated in 12 words which joined together in the very same order produces the private key. How are mnemonics generated? Why Ledger ...
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2answers
47 views

Recovering a Bitcoin Key Made From Rolling Dice

So a few years ago I created a private key by rolling dice. Following the instructions from bitaddress.org, I rolled a dice 99 times and entered the string into the bitaddress.org. Rather than ...
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1answer
43 views

Conditions for recovering a p2pkh bitcoin private key

Apart from Re-using same R value, What are the necessarily ecdsa values needed or method to recover the private key of a p2pkh address. When same address is reused numerous times to receive bitcoin ...
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0answers
32 views

how private key is stored? [closed]

How is the private key or master seed managed on iOS or Android? In copay, using Secure Enclave? And as for Android device how is the private key or master seed managed?
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1answer
80 views

Where is the AES-256 key/ IV pair stored in wallet.dat file?

I have created an encrypted bitcoin file. I know the password and I see the mkey in the hex dump. I would like to know where the AES key / IV pair are located in the wallet.dat file?
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1answer
64 views

Javascript library or code that can convert an “uncompressed” bitcoin private key to a compressed one

I forked a pretty old brain wallet generator: https://dvdbng.github.io/memwallet/ -- Currently it generates uncompressed bitcoin private keys. Is there a javascript library that can convert an ...
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43 views

Mycelium not reading segwit bech32 (bc1) addresses from a private key

I'm trying to import my bitcoin private key into the Mycelium android wallet, but it keeps showing up as the legacy address that starts with 1xxx. I sent some coins to the bc1 address and I verified ...
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1answer
42 views

Importing private key to bitcoin node is slow. Can it be faster?

I have launched the bitcoin node and synchronized it. The issue is that importing the private key forces the node to scan the blockchain for the operations with the key. Is there a way to import the ...
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1answer
38 views

Exporting private key from expired bitcoin address (now showing as watch-only)

Is there a way, in theory, to export private key from the bitcoin address (watch-only) that is now expired, but used once before? (even to get a different format of that key, numeric one instead of QR ...
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0answers
182 views

How can I technically find my private key for bitcoin wallet address (Blockchain) that has been used before?

So I really made a mistake by importing address without knowing I will be asked for a private key later since that address is watch-only. Seems like this address has already been used before on my ...
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2answers
53 views

What is the need for multiple private keys?

From what I understand, there is initially a seed from which the private keys are derieved and from that the public key respective to each private key is derived. The public key is essentially the ...
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0answers
47 views

How to send & receive bitcoin using bitcoinjs-lib?

First I create HD Wallet using BIP32 using mnemonics. Now I want to generate new child addresses with private key using xpub & xpriv for every receive. Then for example, I received BTC in 2 ...
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53 views

Blockchain Private Key

I have been paying amounts of bitcoin, with the promise from Howard Jones in Texas that I will get my private key to get the bitcoin, but when it was time to give me the key, communication went quiet, ...
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1answer
61 views

Linking Bitcoin addresses based on a private key - is that possible

I have seen a claim as follows: [We] apply algorithms to detect which bitcoin addresses are sharing the same private keys. In most cases, this leads to a high-level assertion of certain addresses ...
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1answer
71 views

Two transactions are signed by different private keys, and the value of “R” for these two transactions is the same?

Everyone knows an error in the Blockchain when the same value of "R" can be calculated and find out the private key of the transaction: ECDSA Signature and the "z" value But I have a ...
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1answer
70 views

Can someone help me find the private key for my bitcoin wallet? [duplicate]

I have a Bitcoin Wallet on Blockchain and i have a imported wallet there where my bitcoin is stuck please help.
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2answers
99 views

How to recover private key from 12-word passphrase?

I'm wondering if there's anyone out there who knows how to retrieve your private key using your 12-word passphrase? Your advice is much appreciated
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1answer
78 views

Bitcoin ATM paid out to a phone number, how can the funds be retrieved?

A friend was trying to send me bitcoin using a Bitcoin ATM, she sent the funds to "her phone number" instead of my wallet QR code. The ATM indicated that Bitcoin was sent, but my friend doesn't even ...
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1answer
40 views

Does Bitcoin Core still use “Bitcoin seed” in addition to a seed like stated in BIP 32?

In BIP 32 it's stated that a Master Private key is generated by hashing the concatenation of a random seed and the string "Bitcoin seed". And is like so in the example implementations. But I couldn't ...
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1answer
87 views

Is signature/private-key required to accept payment over Lightning Network?

To (1) create an invoice and (2) accept payment in LN, the node has to be online. But does the node need to sign the creating invoice or the accepting payment? We don't have to have private key ...
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1answer
48 views

How to re-secure a multisignature wallet if private key is stolen

Here are two attack scenarios on bitcoin private keys: 1) Assume that, BitCorp has just noticed that a Mallory has just compromised one of their servers holding their Bitcoin Private keys. Luckily,...
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1answer
103 views

Hardened Keys vs Normal Keys - A Simpler Explanation

I'm trying to better understand hardened keys and normal keys and how the former protects the rest of and HD wallet. Following on from the answer provided here: ELI5: What's the difference ...
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2answers
47 views

Trying to understand extended keys

I'm slowly getting educated about how the blockchain and Bitcoin addresses work. I now understand why it is more secure to use a different Bitcoin address for every transaction you make but I'm now ...
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1answer
38 views

Can't import BIP32 key into electrum

I always struggle here and tried both ways plenty of time i use the rubygem "moneytree" and electrum 3.3 @master = MoneyTree::Master.new @master.to_bip32(:private) this will give me ...
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1answer
24 views

Hierarchical Deterministic (HD) Importing Funds

I'm creating derived addresses from a HD private key. I have all data saved, such as the; seed, HD private key and derived addresses with their private keys, plus wif formats. I'm receiving funds in ...
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38 views

Importing the keys Issue

I imported the private keys into my wallet and they appear to be added: This is the result when i run getImportedKeys(): [ECKey{pub HEX=...
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1answer
56 views

Bitcoin core wallet's security

When running a bitcoin node on an enterprise level: a lot of addresses will be generated with getaddress RPC for users to send their funds to. As far as I understand, these addresses, as well as the ...
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1answer
33 views

Question about nondeterministic wallet

I was reading https://github.com/bitcoinbook/bitcoinbook/blob/develop/ch05.asciidoc#user-stories and ran into this statement. In the first bitcoin wallet (now called Bitcoin Core), wallets were ...
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1answer
95 views

Can someone explain what exactly is derived address?

Let's say my mnemonic words are army van defense carry jealous true garbage claim echo media make crunch When I used https://iancoleman.io/bip39/#english, the section, Derived Address, showed ...
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1answer
206 views

What can I do with Account Extended Private Key and Account Extended Public Key?

I have been reading about Account Extended Private Key and Account Extended Public Key that derives from the Master Private Key and Master Public Key, but I still have some question about their ...
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0answers
175 views

how to find my btc address and private key using bip32 rootkey

I have one query Using my bip32 rootkey I can see all address I've 250$ into my wallet but when i important the address from my rootkey it's showing only address which i received payment of last 150$...
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2answers
208 views

Can Large Bitcoin Collider break into the wallet which is created by new version of Electrum?

I have heard that Large Bitcoin Collider can only break into wallets that are created by broken software. My other question is that it seems the last private key that they found was on 2017-11-15 01:...
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1answer
75 views

How to get my c-lightning node's private key?

lightning-cli getinfo outputs my node's id, which is its public key. How can I get its underlying private key?
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1answer
71 views

Private key generation doubt

I read that the private key pk has to be any number between 1 and n, where n is almost 10^77. Since pk' s function is practically to be used as a scalar for multiplying the generator point G, why does ...
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2answers
393 views

How can my private key be revealed if I use the same nonce while generating the signature?

I know it is well understood that it is not a good practice to use the same nonce while generating the signatures, but I am not getting the math right. Assume I have some UTXOs that are controlled ...
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1answer
44 views

If transactions are changed in memory how miners know it?

If Alice requests something to bob, then Alice sends her public key and Bob encrypts message by using Alice's key. Bob uses his private key and hash function to make a signature. After finishing this ...
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3answers
469 views

Theory: brute-force key search

Let’s say I want to generate many private keys so I can generate one private key (and thus a public key) identical to the richest bitcoin address. But I can’t do that because my computer power is not ...
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2answers
134 views

Private Key in HD Account Bither Watch Only

I have a watch only HD account in Bither and I've got a password of the wallet but I don't have a private Key. I need to send BTC received in that account to another address in another account