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Questions tagged [encryption]

Encryption is the process of encoding information into a ciphertext that only authorized parties can decode. Encryption isn't used in the Bitcoin protocol itself, however it can be used e.g. for encrypting wallet backups or peer-to-peer communications.

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Bitcoin Core stores public keys and balance unencrypted, a few questions

I came across this statement in the Sparrow Wallet documentation; Unfortunately, Bitcoin Core stores your public keys and balance unencrypted on the computer it is running on. If this computer is ...
FractalEncrypt's user avatar
2 votes
2 answers
251 views

Encrypted message with nLockTime

I know you can delay a transaction's accepted date by using nLockTime. I'm still looking for the simplest way to generate a transaction with nLockTime, but that's another topic. I'm wondering if ...
Nikksno's user avatar
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2 votes
0 answers
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Java bitcoinj: semantics of 'decompress' on encrypted key

Calling the decompress method on an encrypted ECKey object yields an ECKey object which has no private key (only public). I personally would have expected to get the same encrypted key in uncompressed ...
Sven Williamson's user avatar
2 votes
0 answers
170 views

Safety differences between full wallet encryption and only encrypting the private keys?

I'm a newcomer in the Bitcoin world and I wanted to ask the following questions regarding wallet security: What are the safety differences between fully encrypting the wallet.dat file and only ...
Anakhand's user avatar
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0 answers
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Does Amit Sahai's indistinguishability obfuscator enable Autonomous Virtual Corporations or "Agents"?

Given that an "Agent" is described as Agents are autonomous programs that maintain their own wallet, which they use to buy server time. Money is obtained by the agent selling services. If demand ...
makerofthings7's user avatar
2 votes
0 answers
287 views

Is there a way to import a private key already protected with the passphrase?

Let's say I have a hot wallet that has passphrase encryption enabled. Then let's say a large withdrawal needs to occur but the hot wallet has insufficient funds and a transfer from cold storage is ...
Stephen Gornick's user avatar
1 vote
0 answers
86 views

Decrypting wallet

I'm seeking assistance with understanding the technical aspects of how Electrum wallets handle parsing errors and potential solutions for resolving them. My friend has encountered a recurring issue ...
Dirk's user avatar
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1 vote
0 answers
29 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 ...
Dan's user avatar
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1 vote
0 answers
710 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 ...
levio's user avatar
  • 11
1 vote
0 answers
2k 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 ...
kmart875's user avatar
1 vote
0 answers
102 views

Is the Password stored in RAM in clear text after decrypting the MultiBit HD wallet?

After decrypting your wallet in MultiBit HD, is the clear text version of password stored in the RAM?
Homeland S's user avatar
1 vote
0 answers
89 views

Can't start bitcoind after wallet encryption (Bitcoin Core)

pretty new to the Bitcoin world! I downloaded Bitcoin Core and got everything up and running. I then attempted to encrypt my wallet, and after successful encryption can no longer start bitcoind. ...
BitNoob's user avatar
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0 answers
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Is there any implementation of attribute-based encryption on top of Bitcoin?

I've found a few papers detailing how you could do it in theory, but haven't seen anything in practice. Like a system for distributing bitcoin to private keys, where those keys are only distributed ...
SingularityFuture's user avatar
1 vote
0 answers
194 views

How MultiBit stores password

I'm curious to understand how MultiBit stores my password. The fact is: I can restore the password by using the 12 words. From this answer it seems tha the AES key to encrypt the password is derived ...
EsseTi's user avatar
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1 vote
0 answers
214 views

bitcoin-qt restored wallet.dat all synced closes after correct passphrase "assertion error crypt" HELP

Installed bitcoin-qt and replaced new wallet.dat with old wallet.dat backup Opened bitcoin-qt and let it sync and all blocks synced and wallet has correct funds and past transactions. I Want to ...
coolfrog's user avatar
1 vote
0 answers
115 views

Implementing Secret Sharing with an Encrypted Bitcoin Wallet

How would I implement Shamir's Secret Sharing Scheme with an encrypted Bitcoin wallet?
Geremia's user avatar
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1 vote
0 answers
1k views

How do I get my encrypted private key converted?

"addr": "typicalbitcoinaddress", "compressed": true, "encrypted_privkey": "this is my private key that is 96 characters long", "label": "Wallet", "pubkey": ...
user14755's user avatar
1 vote
3 answers
923 views

Practical application of Electrum's Encrypt/Decrypt message feature?

It's pretty clear how signing a message with a Bitcoin key can be useful in proving ownership of funds. However, it's far from clear how encrypting a message with a Bitcoin key can do anything useful....
Rich Apodaca's user avatar
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Old encrypted wallet + bitcoin core

I got desperate, I tried all the instructions I could find on the Internet - nothing helps. What I have: wallet.dat from bitcoin-core encrypted from 2015 (in four different places) the password I ...
LamoSS's user avatar
  • 1
0 votes
1 answer
88 views

Access restored but encrypted/locked old wallet (2013 version)

I Installed Bitcoin Core v25.0.0 and restored my old wallet backup made in 2014 (with bitcoin core version of 2013) successfully. The wallet is shown, status is encrypted and locked. Trying to unlock ...
Leo's user avatar
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0 answers
50 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 ...
AncientTides's user avatar
0 votes
1 answer
203 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 ...
Eddy's user avatar
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0 answers
37 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 ...
terry franklin's user avatar
0 votes
1 answer
257 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.
Maxim Bogush's user avatar
0 votes
1 answer
740 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 ...
Monero's user avatar
  • 9
0 votes
1 answer
193 views

can I Re- encryp my wallet with a wallet.dat file from before encryption

My computer crashed and I lost access to my bitcoin wallet.. before that happened I knew I had lost my passphrase so when trying to recover my wallet with my wallet.dat I looked for a very early dated ...
Fran's user avatar
  • 1
0 votes
0 answers
58 views

At what market cap will bitcoin be worth "cracking"?

This is the doomsday scenario: bitcoin's market cap goes into the trillions of dollars and the cost/benefit ratio of cracking the encryption algorithm tips so that it becomes attractive to throw ...
Tom Russell's user avatar
0 votes
0 answers
333 views

How can an encrypted wallet spend coins without asking for decryption password?

It is possible for some encrypted wallet to spend coins (e.g. this one) without requesting a decryption password or any other form a authentication. Of course, a password is requested when first ...
Sven Williamson's user avatar