Are Public Keys Really Safe to Share?

20 replies 590 views
shrimpNewbie
Posts: 291 · Reputation: 20
#1Jan 30, 2022, 12:42 AM
Is this a dumb question? Just curious if anyone’s ever seen a hack using a Bitcoin wallet’s public key. Can you really trust it to stay safe online? Are there real threats with exposing public keys?
10 Reply Quote Share
0x4lphaFull Member
Posts: 524 · Reputation: 509
#2Jan 30, 2022, 06:45 AM
Nah, it’s not dumb. But honestly, no hacks like that reported yet. Only worry is quantum computers, but we’re not there yet.
6 Reply Quote Share
gang2015Member
Posts: 693 · Reputation: 62
#3Jan 30, 2022, 10:06 AM
I doubt any article would claim that. Public keys get exposed when you send or spend Bitcoin, so they’re kinda public anyway.
12 Reply Quote Share
stacksatsHero Member
Posts: 404 · Reputation: 2023
#4Jan 30, 2022, 12:53 PM
Lol it’s funny. Public keys are like your name online. They don’t lock your funds. If they were a problem, addresses would be too. Just a math thing, you know?
5 Reply Quote Share
0xOrbitMember
Posts: 132 · Reputation: 91
#5Jan 30, 2022, 03:09 PM
Right, the flow is from private key to public key, then to the address. You can’t reverse it. Private keys stay secret for signing transactions.
10 Reply Quote Share
Ba5edGuruFull Member
Posts: 92 · Reputation: 349
#6Feb 1, 2022, 06:45 PM
Same here, no hacks through public keys. Most hacks happen on exchanges with malware. No one’s really hacked through just public keys as far as I know.
12 Reply Quote Share
davekingFull Member
Posts: 67 · Reputation: 757
#7Feb 1, 2022, 08:44 PM
I get that theory, but I’ve seen a developer claim otherwise. Quantum computing is gonna make things dicey for real.
7 Reply Quote Share
Posts: 84 · Reputation: 29
#8Feb 1, 2022, 09:46 PM
It’s possible mathematically, but right now it’s just too hard. We haven’t seen breaches from public keys yet. Address reuse is actually the bigger privacy issue.
5 Reply Quote Share
MadNovaHero Member
Posts: 281 · Reputation: 3536
#9Feb 2, 2022, 06:50 AM
You can’t hide your public key anyway. Sending Bitcoin reveals it. Nodes need it to verify transactions, even if it’s not directly shown.
8 Reply Quote Share
Posts: 181 · Reputation: 229
#10Feb 2, 2022, 08:10 AM
Yeah, if they crack higher bit keys, we’re in trouble. But Taproot addresses use tweaked keys, which makes it a bit different.
0 Reply Quote Share
gang2015Member
Posts: 693 · Reputation: 62
#11Feb 2, 2022, 01:33 PM
Current tech can’t crack it. Elliptic curve cryptography is super strong. Exposed keys might face dust attacks, but we’re working on quantum-resistant wallets.
6 Reply Quote Share
BasedHashNewbie
Posts: 55 · Reputation: 8
#12Feb 4, 2022, 04:28 AM
Still all theory, right? They cracked a tiny 15-bit key, but Bitcoin’s 256-bit. We can’t panic over that.
5 Reply Quote Share
davekingFull Member
Posts: 67 · Reputation: 757
#13Feb 5, 2022, 07:56 AM
Why’s there a difference between a public key and an address anyway?
8 Reply Quote Share
its_laserSenior Member
Posts: 115 · Reputation: 813
#14Feb 5, 2022, 02:06 PM
It’s about consensus. If miners team up with hackers, they could mess with Taproot outputs, but that would ruin their rep.
11 Reply Quote Share
0xChadNewbie
Posts: 514 · Reputation: 3
#15Feb 5, 2022, 08:18 PM
I remember reading about that! Is it about default spending conditions for Taproot?
3 Reply Quote Share
gang2015Member
Posts: 693 · Reputation: 62
#16Feb 5, 2022, 09:37 PM
Totally! It’s wild how none of these articles mention tweaked keys.
1 Reply Quote Share
quantumaltHero Member
Posts: 57 · Reputation: 2784
#17Feb 6, 2022, 05:57 AM
If your wallet key’s out there, it’s game over for your wallet. Keep that key tight if you care about your Bitcoin.
5 Reply Quote Share
0xChadNewbie
Posts: 514 · Reputation: 3
#18Feb 6, 2022, 11:14 AM
Yeah, BIP341 says tweak the internal pubKey. Not a consensus rule but seems like a good idea.
5 Reply Quote Share
mr_apeNewbie
Posts: 407 · Reputation: 35
#19Feb 6, 2022, 04:27 PM
Public keys are meant to be public. Just avoid reusing addresses for better privacy. Everything else is deep tech stuff.
9 Reply Quote Share
0xBearFull Member
Posts: 54 · Reputation: 631
#20Feb 6, 2022, 07:01 PM
I just saw news about some crazy AI. OI is a big deal, but it’s wild how we’re diving into all this tech.
10 Reply Quote Share

Related topics