База знаний: криптоторговля, кошельки и блокчейн
Распространённые вопросы и ответы о криптовалютной торговле, кошельках и блокчейн-знаниях, включая связанные пояснения и ответы.
- 01
Запрещены ли цепочки из 26 неподтвержденных транзакций кошельком в Bitcoin Core 31.0?
Вы можете иметь цепочку длиной более 25 неподтвержденных транзакций в мемпуле, но кошелек по-прежнему применяет ограничение в 25 цепочек транзакций. При запуске bitcoind -help-debu...
Технологии - 02
What does it mean that the security of Bitcoin public keys and 256-bit ECDSA is 128 bits?
What does it mean that the security of 256-bit ECDSA, and therefore Bitcoin keys, is 128 bits? I mean, if I have approximately 2^256 possible points on the elliptic curve (thus pos...
Безопасность и риски - 03
Receiving donation on a bitcoin address and security issues of reusing the same address
For a blog that only receives occasional small amounts you probably shouldn't worry too much about it. However, if you plan to scale up, here are some things to consider: One issu...
Безопасность и риски - 04
How can vulnerabilites in bitcoin be responsibly reported?
Information on current (ie, not past/public/resolved) security issues should be sent to the private [email protected] mailing list. The SourceForge list is now...
Безопасность и риски - 05
Is 24 words seed safer than 12 words in terms of bruteforcing the private key
Regardless of whether you have a passphrase or not 12 words is just as secure as 24 words because the resulting public key will still require 2^128 iterations to compute its privat...
Безопасность и риски - 06
Brassard-Høyer-Tapp (BHT) Algorithm and Bitcoin (BIP360)
Grover's is related and some considerations were discussed here on Stackexchange, too. We could design a black box function to break both P2PKH and P2SH (and P2WSH, etc.) addresse...
Безопасность и риски - 07
How do you derive the private key from two signatures that share the same k value?
ECDSA signatures are pairs (r,s) where r=(k*G).x mod n, and s = (m + r*x)/k mod n, where x is the secret key, k is the random nonce, and m is the message. If you have two s values...
Безопасность и риски