کرپٹو ٹریڈنگ، والٹ اور بلاک چین علم سوال و جواب
کرپٹو کرنسی ٹریڈنگ، والٹس اور بلاک چین کے علم پر محیط عام سوال و جواب، متعلقہ وضاحتوں اور جواب کے مواد سمیت۔
- 01
کیا Bitcoin Core 31.0 میں والٹ کی طرف سے 26 غیر تصدیق شدہ لین دین کی زنجیریں ممنوع ہیں؟
آپ mempool میں 25 غیر تصدیق شدہ ٹرانزیکشنز سے لمبی چین رکھ سکتے ہیں، لیکن والٹ پھر بھی 25 ٹرانزیکشن چین کی حد نافذ کرتا ہے۔ bitcoind -help-debug چلانے سے: ... -limitdescendantcoun...
ٹیکنالوجی - 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...
سیکیورٹی اور خطرہ - 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...
سیکیورٹی اور خطرہ - 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...
سیکیورٹی اور خطرہ - 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...
سیکیورٹی اور خطرہ - 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...
سیکیورٹی اور خطرہ - 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...
سیکیورٹی اور خطرہ