Questions tagged [encryption]
For questions relating to encryption operations and algorithms as they apply to crypto-currencies specifically.
173
questions
0
votes
1
answer
57
views
severity of bitcoin vulnerability to AES crack
In the event that AES is cracked, what are the implications for the consensus layer of bitcoin? What are the implications for user's bitcoin wallets? On average, how many bitcoin would be available to ...
- 1,493
4
votes
1
answer
223
views
BIP324 encrypted packet structure
I recently saw the BIP 324 proposal. It shows us there can be some privacy enhancement by using ECDH secrets and encryption algorithms such as ChaCha20 and AEAD-ChaCha20-Poly1305. The proposal ...
- 301
0
votes
0
answers
43
views
If I solved y²= (x³ * ax * b) mod p [as it is] what would I gain or be able to do with it's algorithm?
So the calculations for secp256k1 affirm to the formula y² = (x³ * ax * b) mod p of which is said to be impossible to calculate (as is) because of arbitrary large numbers involved.
Hypothetically if ...
- 97
0
votes
1
answer
94
views
wallet seem to be encrypted or corrupt
I found my wallet but i cannot access it tryed with bitcoin core. But gives error i think i encrypted or corrupted file. I openend with WinHex but only see 2020 in it.try to find hash but no succes. i ...
- 1
0
votes
0
answers
32
views
How does Blocktrail encrypt its wallet backup information which is in PDF file?
I have BTC.com Bitcoin Wallet Recovery Backup Sheet and i do not like the idea behind Blocktrail's wallet process because it doesn't give you an option to save your seed or private key but it just ...
1
vote
0
answers
26
views
In which format (format, not cypher algo.) does Electrum encrypt its files?
Electrum wallet encrypts its files using the AES-256-CBC algorithm, but in which format does it encrypt files? (I mean, what headers, vectors, checksums etc. it adds and where?)
By format I mean ...
- 171
0
votes
1
answer
52
views
Why does the Bitcoin network encrypt the transaction data? [duplicate]
The whole process of encryption sounds useless to me. Miners/validators and full nodes need to verify each transaction. They need two pieces of information:
The original transaction data
The ...
0
votes
1
answer
187
views
How to get information from electrum wallet?
I have my wallet file and it is encrypted with a password.
How to decrypt wallet file using code?
Encryption seems similar to Fernet.
1
vote
0
answers
490
views
How to recover from forgotten password for Bitcoin Wallet for Android backup?
Back in 2016, I had a Bitcoin wallet with a couple of euros worth of Bitcoin. I used the Android app "bitcoin wallet" to backup my wallet but I had to use a password.
This week, I found the ...
- 11
0
votes
1
answer
40
views
For mobile wallets that don't ask for a password, how are keys encrypted on your device?
I've used wallets that give a seed phrase, but don't ask for a password to send coins (signing a transaction).
I can't imagine they encrypt with the seed phrase since you don't ever re-enter the seed ...
- 3
0
votes
1
answer
256
views
Are hardware wallet seeds cross compatible over all brands and even software wallets?
I had a discussion today and I'm really confused. What I though is happening with each hardware wallet is this:
Seed (BIP39) 1 --> HW Wallet (ledger) --> chip1 + seed = private key 1
Seed (...
- 229
3
votes
1
answer
168
views
Why does the chacha20 implemented in the Bitcoin Core use a 64 bit nonce?
The draft of chacha20 uses a 64-bit nonce, but the final version of chacha20 specification uses a 96-bit nonce.
The #9792 PR adds chacha20 to Bitcoin Core. We can see the function ChaCha20::SetIV(...
- 33
1
vote
1
answer
271
views
Why does Bitcoin Core's RPC interface not use encryption?
As the Bitcoin Core docs state:
Although Bitcoin Core's RPC interface does use authentication, it does
not use encryption, so your login credentials are sent as clear text
that can be read by anyone ...
- 14.7k
0
votes
1
answer
593
views
What is the electrum bitcoin wallet password encryption method?
What method does Electrum bitcoin wallet use for password encryption?
I want to check to see if the file encrypted with the password is secure. And what are the ways around to decrypt it outside the ...
- 9
0
votes
1
answer
228
views
Can you get the seed phrase of a HD wallet from the private key of one of the wallets?
Let us say I have a HD wallet. Can I get it’s seed phrase from the private key of one of its wallets?
Also are seed phrases just easy to remember private keys? If so does that mean that from the seed ...
- 157
2
votes
1
answer
292
views
Decrypting Bitcoin Core wallet with password that contains special characters
I have come across a Bitcoin Core wallet that uses a special character for the passphrase. When attempting to decrypt, it accepts the password but does not decrypt part of the keys.
Is there a known ...
- 329
0
votes
1
answer
135
views
Public key Exceeding Mod P? A Clarification Request On The Discrete Logarithm Problem
I tried to observe / implement the discrete logarithm problem but I noticed something about it; but before I get into it let me give some clarification which is open to correction.
a = b^x mod P
...
- 29
1
vote
1
answer
83
views
Multi Party ECDSA?
Are there any alternatives to the Multi Part ECDSA implementation contributed by ZenGo?
- 419
0
votes
1
answer
66
views
Security concerns with walletpassphrase
I have some security concerns with walletpassphrase:
If it stores the passphrase for some unit of time. ie. so you can send funds, surely if the server is compromised, within that timeframe, the ...
- 215
1
vote
1
answer
710
views
Recovering my old bitcoin wallet
As far as I can tell, my old bitcoin wallet got corrupted. It was created in Bitcoin Core in the 2014/2015s, and I'm trying to recover it. Bitcoin Core doesn't accept it anymore (and doesn't give an ...
- 111
0
votes
1
answer
164
views
Is my cold wallet still cold?
I created a new wallet.dat on a dedicated, secured machine with Bitcoin Core.
Then I encrypted it.
Then I sent my "fortune" of coins to it.
Then I backed the file up by putting it on all my ...
- 41
1
vote
1
answer
215
views
Isn't an encrypted wallet.dat automatically a "watch-only" wallet?
I have encrypted my wallet.dat outside of this computer. Now I store my wallet.dat on this computer.
If I open it in Bitcoin Core, I can view the balance but not spend it (without entering the ...
- 11
2
votes
1
answer
1k
views
To test if my wallet.dat encryption password is correct, MUST I spend coins?
When a Bitcoin Core wallet is encrypted, you (apparently) have to enter the decryption passphrase only when trying to spend coins. You still get to "use" the wallet as in seeing all the ...
- 41
0
votes
2
answers
636
views
Why is Bitcoin Core not asking me to enter the decryption key for my allegedly "encrypted" wallet.dat?
I created a wallet.dat with Bitcoin Core on a new PC. Then I encrypted it with the GUI menu.
When I reloaded that computer, I was shocked to see that Bitcoin Core did NOT ask me to decrypt/unlock the ...
1
vote
2
answers
1k
views
Should I be using the "encrypt wallet" feature in Bitcoin Core?
All my wallet.dats have no password. However, the internal hard disk where the "live" one is located is encrypted, and so are the offline storage devices where I have my "cold" ...
- 11
0
votes
1
answer
211
views
BTC Treasure hunt
Alright, I’m new to Bitcoin/Crypto, and this might be a long story but worth it.
My life long friend had a $50 Visa gift card back in 2009-2011. His friends were over the house one day and mentioned ...
- 1
0
votes
1
answer
1k
views
How long would it take to break a 32 bit key / encryption [closed]
I was actually wondering...
How long would it take to crack/brute force a 32 bit key/encryption and a 16 bit key/encryptions respectively?
- 29
4
votes
2
answers
8k
views
Private key to WIF process
I have a private key for a storage bitcoin wallet (there's not much in there I'm just testing methods) but it is in private key form and to import it to my main wallet I need to convert it into WIF.
...
- 41
0
votes
1
answer
135
views
Should I Encrypt my Wallet for Cold Storage?
I understand that the Bitcoin QT wallet is already encrypted to some extent when I use a password. Is it best-practice to further encrypt the wallet file for long term storage?
- 111
-1
votes
2
answers
83
views
Bitcoin core wallet backup corrupted by an external tool [closed]
Do you know if my wallet.dat which has become wallet.axx due to incorrect handling of an external program
(I do not know the name of the program, but it is used to encrypt Windows files)
has the ...
- 1
0
votes
1
answer
130
views
Addresses found in wallet.dat that start 00 14
I found a list of addresses in my dumped wallet.dat file that all start 00 14... They are script=1.
What are these encoded with and how to decode?
- 37
4
votes
1
answer
435
views
A security need for Bitcoin to fork to quantum resistant algorithm in a few years?
in just a few years I believe that quantums will exist that break asymmetric ciphers, and bitcoin is based on asymmetric ones like public-key-cryptography, correct? Symmetric algorithms are supposed ...
- 837
2
votes
1
answer
130
views
Ledger 8 pin number how hard in terms of entropy is it to guess?
ledger has a max. 8 number pin for unlocking it as far I know.
I am very interested, can someone say if (given any method/resources) it is in any scenario (except luck) possible to guess this 8 ...
- 837
2
votes
1
answer
203
views
Bitcoin and encryption
To the best of my understanding Bitcoin uses encryption to create the digital signature, basically, by encrypting the hashed message (transaction?).
Would like to get your expert opinion to my claim ...
- 123
1
vote
0
answers
1k
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 ...
- 31
1
vote
3
answers
239
views
Ironically, encryption is not an important part of bitcoin (?)
The above statement is taken out of a book which I've been reading: Mastering Bitcoin 2nd Edition.
...as its communications and transaction data are not encrypted and do
not need to be encrypted ...
- 111
2
votes
1
answer
370
views
Why doesn't the Bitcoin-qt client ask for the Wallet passphrase upon startup?
I've just encrypted my wallet.dat file using the "Settings -> Encrypt Wallet" menu option.
I then closed the client and re-opened it.
I was expecting to be prompted to put in the wallet password ...
- 135
0
votes
1
answer
864
views
Can't decrypt bitcoin core wallet, did I made a backup at the wrong time?
I am confused on why my bitcoin core wallet password would not work. I am 90% sure I tried the right password(s).
wallet has many receiving addresses (10 000), I generated them with Linux from ...
- 167
1
vote
1
answer
97
views
How is the PRIVATE KEY actually created in the first place?
How is the "Private Key" created in the first place?
I understand that once you have your wallet, you will also gain access to your public key and private key...
But in order to have a wallet ...
arthurzee
2
votes
1
answer
1k
views
What happens when i change the encryption password of Bitcoin-Core wallet
What happens when i change the encryption password of Bitcoin-Core wallet?
Is first pass lost forever , where is it saved - on the blockchain or on the wallet.dat file? What if encrypt wallet with ...
- 21
4
votes
1
answer
176
views
Has Bitcoin Cores encryption wallet security ever been bypassable?
Every few years there seems to be an exploit found in Trezor that allows people to bypass the security. I was wondering has there every been the same case for Bitcoin Core wallet encryption?
- 227
2
votes
2
answers
304
views
Why was noise XK fundamental pattern chosen in the transport layer (BOLT 08) of the lightning network
I am currently reviewing the transport layer of the Lightning network protocol. It builds on top of the noise protocol framework handshake patterns.
What I don't get: Why was the fundamental pattern ...
- 11.8k
0
votes
1
answer
245
views
Bitcoin Signatures are susceptible to quantum attacks - how exactly and with what practical impact? [duplicate]
@PieterWuille wrote in another thread:
""
The hashing algorithm is probably the most quantum-resistant piece of cryptography right now in Bitcoin. Barring any specific breaks, SHA256 and RIPEMD160 ...
- 837
1
vote
1
answer
99
views
How may bitcoins hash algorithm be secured in the future from quantum computing brute forcing?
Other threads already answer very clearly that quantum comps could easily "break" /attack bitcoins chain.
Now: Are there any ideas among the bitcoin devs circulating out there, how to save bitcoin ...
- 837
0
votes
1
answer
58
views
Is it possible to run HD derivation with an encrypted master node or seed?
Given either a seed or the private part of a master node, that is encrypted using AES-256-CBC (or another secured symmetrical cypher) with key K, is it possible to run derivation such as described in ...
- 101
2
votes
1
answer
181
views
C-lightning Implementation password protect hsm while maintaing node access
I was wondering if there was a way to encrypt the folder that contains the hsm_secret (and a lot of other operational files necessary for constant operation of a C-lightning node) without cutting it ...
- 41
1
vote
1
answer
462
views
Is the unencrypted copy of the wallet still usable after a copy is encrypted?
My wallet is not protected with a password, I have a few receiving addresses generated and a some funds in it, then I make a copy of the wallet and I set a password on this one.
Will the old ...
- 11
1
vote
1
answer
124
views
Is blockchain really secure to store sensitive data?
Plenty of developers these days trying to decentralise everything.
I noticed some developers claim that they are gonna replace email with blockchain technology. johnmcafeeswiftmail, CryptaMail, ...
- 113
3
votes
1
answer
172
views
Why bitcoind will shutdown after encryptwallet?
As mentioned in the bitcoin-cli document for encryptwallet command, bitcoin daemon will shut down after encrypting a new or unencrypted wallet. My question is about the reason for shutting the node ...
- 153
0
votes
2
answers
307
views
Is encryption really needed for blockchain to work?
Is it right to say that Bitcoin and other blockchains do not use encryption? I read somewhere that blockchains rely on digital signatures and hash functions but not on encryption, and that encryption ...
- 3