암호화폐 지식 문답

Rust 앞부분에서 계정을 어떻게 역직렬화할 수 있나요? ↗

누락된 #[max_len(32)] 문제는 직렬화된 계정에 0바이트로 채워져 32바이트가 되는 문자열이 포함되어 있는 반면 역직렬화 구조체는 문자열의 실제 길이만큼만 역직렬화를 시도하고 나머지 0바이트는 다음 필드를 역...

모듈식 다중 프로그램 시스템을 위한 Solana/Anchor 인증 모범 사례(프로그램 간 역할 공유, CPI) ↗

Repo는 비공개인 것 같습니다. 모든 옵션에는 장단점이 있으므로 하이브리드 구현을 만들어 완화할 수 있습니다. 다음은 채택할 수 있는 다중 프로그램 애플리케이션 중 일부입니다. 마리네이드 파이낸스(Marinade...

Why do these two Ethereum transactions have different gas usages? Can't explain it from the GETH EVM debug traces ↗

One of the reason for the gas cost not being the same would be that one account did not have any usdc before the transaction and the other already had some. It cost more gas to set a 0 value to non ze...

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 possible public keys),...

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 issue with using the sam...

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 private key using the most...

Downloading the pruned blockchain file directly from external source ↗

It introduces too much trust into the download source. It's the same thing as just uploading a datadir. You aren't verifying any of the blockchain history; what you download could be a fork of the blo...