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You can implement your own blockchain with less than 200 lines of Go code! Sounds interesting? What better way to learn than to develop a blockchain of your own? Then let's practice together!

1 Introduction e-mail plays an important role in people's work. According to statistics, the average Chinese per user receives 4.4 mails a week, sends 3.6 emails. But the primary protocol for e-mail, such as SMTP, is delivered in plaintext. This information may be obtained by a third party when it passes through an untrusted internet. In a modern society that attaches importance to information security, it clearly meets the requirements. How can this information be kept confidential without tampering or forgery? The PGP (Pretty-Privacy) described in this article is a kind of software, which is mainly used for electric ...

The intermediary transaction SEO diagnoses Taobao guest Cloud host technology Hall CMS article PHPCMS Content Management System Brief Introduction: Phpcms is an open source PHP development framework. 　　PHPCMS consists of more than 20 functional modules including content model, member, ask, topic, Finance, order, advertisement, mail subscription, short message, custom form, whole station search etc., built-in news, picture, download, information, product 5 big content model. PHPCMS uses modular development to support custom content models and Membership modules ...

MapReduce: Simple data processing on large cluster

The two-day RSA 2010 conference ended in Beijing, but many in the industry and Internet security enthusiasts are still feeling the meaning of the end. So, 51CTO as a guest media, the General Assembly of the relevant reports. Here we'll tidy up the wonderful speeches in the conference. The following is a lecture by Assistant professor Haibo of the Institute of Parallel Processing, Fudan University, on the subject of the application of the trustworthy structure in the privacy and security of cloud computing services. See the RSA 2010 Information Security International Forum feature for more details. Haibo: Good afternoon! I am Chen from Fudan University.

Cloud World Congress into the next step, the cloud technology elite. Tian Yun Technology Vice President Reitao: Today is really all star flashing, see the valley of the elite gathered here, so we want to pull back to China, pull back to Beijing's also Zhuang, to see what happened in the local enterprises. We invite four guests to chemistry today. First, Si Jie system company Cloud Platform Product Department CTO Liang, Mr. Liang in SI Jie company responsible for cloud product strategic planning and the overall technology implementation, once was the founder of Cloud.com, this year to think Jay. The second is Chen Shangyi, is the Chairman of the Technical committee of Baidu Company ...

PGP itself is a data security product, what security problems does it have? "No data security system is unbreakable," Philzimmermann, author of PGP, said in the PGP document. "PGP is no exception. We look at its security vulnerabilities in order to let users know what will degrade the security of PGP and how to avoid them. Here are the vulnerabilities: passwords or private key leaks, public key tampering, files that you delete are restored, viruses and Trojan horses, physical security is violated (physical security refers to the security of physical resources such as computers) 、...

PageRank algorithm PageRank algorithm is Google once Shong "leaning against the Sky Sword", The algorithm by Larry Page and http://www.aliyun.com/zixun/aggregation/16959.html "> Sergey Brin invented at Stanford University, the paper download: The PageRank citation ranking:bringing order to the ...

In the modern information society, when the email is popular, the security problem is also very prominent. In fact, the process of e-mail transmission is the process of repeated replication on the network, the network transmission path is uncertain, it is easy to be unknown identity of the theft, tampering, and even malicious destruction, to send and receive both sides trouble. Information encryption to ensure the security of the transmission of e-mail has become an urgent demand for the vast number of e-mail users. The appearance and application of PGP solves the problem of secure transmission of e-mail well. Combining the traditional symmetric encryption with the public key method, we have two ...

July 19, 2000, in a boring and dreary political organization meeting, Jon Orwant stood aside for a few minutes, then calmly went to the coffee table, picked up a cup and threw it across the wall, and said, "We have to find a way to motivate the community, or it's over, we're getting bored, To do something else. I don't care what you do, but you have to do something big. And then he turned around and walked, and this incident triggered the flames of Perl6 's birth. After 10 years of sharpening, July 29, 2010, per ...