BUPT密码工程课后作业5-ASN.1
BUPT密码工程课后作业5-ASN.1
要求1
陈述
要求一：
1、使用ASN.1编写一个数据结构。具体什么数据自己考虑。
2、分别使用asn1c、JavaAsn1Compiler等对这个数据结构进行编译。可以使用c／java／python进行编码，并存储，而后用另外一种编程语言进行解码，比如，用C编码，可以用java或者python解码；
3、对上述的数据结构，使用protobuffer实现一次。这里不强制要求不同的语言实现编码和解码。
要求一中的asn文件，protobuffer，编解码源代码，可执行的程序，代码说明书和要求二中的原始文件和解释文档需要一并提交上来，方便我检查。
相信很多人参考了这篇简书，但是里面有一些坑，为了让本不容易的生活稍微容易点，写了这篇希望能有一点儿帮助...
Is it possible to test contract with bytecode only?
Is it possible to test contract with bytecode only?
##background
I only have the bytecode of the contract, and bytecode-level constuctor for the contract. I want to deploy the contract to my local private chain and invoke some methods to run my test logic on the contract. At first, I was thinking about geth, and have done a lot of preperation. ...
Truffle Test| a bug?
Description
Depositing one token without transferFrom into EtherDelta:
The contract of EtherDelta:
/**
*Submitted for verification at Etherscan.io on 2016-08-30
*/
//last compiled with soljson-v0.3.6-2016-08-29-b8060c5.js
contract SafeMath {
//internals
function safeMul(uint a, uint b) internal returns (uint) {
uint c = a * b;
...
ganache-cli problem
Truffle|xxx Token has not been deployed to detected network (network/artifact mismatch)
Description
I’m testing one contract today with truffle console, and at the beginning I was running truffle test to test the contract. However, for some reason, I shifted to truffle console method. And I got the error above.
Solutions on line
I looked up many...
LDA model IndexError: index 4963 is out of bounds for axis 1 with size 4963
LDA model IndexError: index 4963 is out of bounds for axis 1 with size 4963
Today I’m running a LDA model in order to find the dominant topic in each sentence.
for i,row in enumerate(lda_model[corpus_in_address]):
for j,(topic_num,prop_topic) in enumerate(row):
if j==0:
wp = lda_model.show_topic(topic_num...
Truffle version
Truffle version
Background
Met with one problem today, when using truffle, there are some conflicts with the solc version.
Migration.sol pragma solidity >=0.4.21 <0.6.0;
Contract_code.sol pragma solidity 0.4.19;
solc version 0.4.24
truffle-config.js
module.exports = {networks:
{development:
{host: "127.0.0.1",
port: 8545,
network_i...
Expecting property name enclosed in double quotes
Expecting property name enclosed in double quotes
Background
In this project, I have to dump json file and open this json file in a loop. At first, I looked up some blogs on the internet, most of them talks about the misuse of quotes and double quotes, I checked my code, I found all of the keys in the dictionary used quotes instead of double q...
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