geth sync
stateEthereum maintains two different types of state: the set of accounts; and a set of storage slots for each contract account. Naively, storing these key-value pairs as flat data would be…
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geth v1.10.0 summary
introductiongeth v1.10.0 has been released on Mar 4 2021. this is a late summary of v1.10.0. snapshotsthe snapshot feature reduces the cost of accessing an account from O(logN) to O(1). Whi…
Read articlego similar concepts comparison
struct{} & struct{}{}struct is a keyword in Go. It is used to define struct types, which is a sequence of named elements. For example: The struct{} is a struct type with zero elem…
Read articlego reflect
introductionReflection is the ability of a program to examine its own structure, particularly through types. type and interfacesGo is statically typed. Every variable has a static type, Exa…
Read articlepaillier encryption
fundamentals fundamental theorem of arighmeticthe fundamental theorem of arithmetic, also called the unique factorization theorem and prime factorization theorem, states that every integer …
Read articletwo party ecdsa
overviewthis post is my reading summary of paper Yehuda Lindell 2017: Fast secure two-party ecdsa signing. the implementation could be found in tss-lib (golang), zengo’s library (rust). Unl…
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triea trie, also called prefix tree, is a type of k-ary search tree. These keys are most often strings, with links between nodes defined not by the entire key, but by individual characters.…
Read articleunderstanding of kademlia protocol
IntroductionKademlia, a peer-to-peer distributed hash table(DHT). Some other DHT techniques are Chord. In the Kad network, each node has a unique 160-bit ID (ETH account address is 20 bytes…
Read articlerust async
I/OI/O：在计算机中指Input/Output。由于程序和运行时数据是在内存中驻留，由cpu来执行，涉及到数据交换的地方，通常是磁盘、网卡等，就需要IO接口 I/O 模型 同步阻塞 当用户线程发起IO请求后，会进行系统调用（system call）来让内核（Kernel）进行IO操作（系统调用是用户空间和内核空间的一个通道）； 此时…
Read articlegeth evm source analysis
overallthe code is under path core/vmoverview of the whole evm module the core is EVM struct (in evm.go), with main function in creating or call contract. a new EVM object is created every …
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