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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 ...

As IP Voice (VoIP) technology continues to spread across the global telecommunications market, performance improvements, cost reductions, and functional support for service providers, device manufacturers, and end-users make VoIP an attractive thing. With increasing interest in VoIP, the security of voice communications is likely to evolve into a key requirement for VoIP solutions. Packet-based communications are particularly vulnerable to security risks, including packet monitoring of voice "eavesdropping", the use of unpaid service to forge network IDs, and manipulation of data packets.

Research on cloud storage security technology based on HDFs Yu Qi Lingtie The security problems such as data leakage and data tampering existing in cloud storage technology, and combining with the characteristics of HDFS data integrality checking mechanism, this paper designs and realizes a data storage security technology scheme based on HDFS. To the user uploaded to the HDFS data file implementation of AES encryption, files in ciphertext form storage, and the application of RSA algorithm to protect the encryption of AES key, can effectively prevent the data in the transmission and storage process is leaked. The paper designs two storage formats of file cipher text and document plaintext based on HDFs.

End-to-end encryption policies must take into account everything from input to output and storage. Encryption technology is divided into five categories: file-level or folder-level encryption, volume or partition encryption, media-level encryption, field-level encryption and communication content encryption. They can be defined further by the encryption key storage mechanism. Let's take a look at the grim forecast: According to the US Privacy information exchange, One-third of the U.S. people will encounter the loss or leakage of personally identifiable information from companies that store data electronically this year. Whether that number is not exactly right, anyway the public knows the data leaks ...

Absrtact: If I don't need a privacy and security very high IM tool, that means the information from my circulation is not important enough, most people should be like me is a common micro-credit households. But there's a pinch to keep information highly confidential or if I don't need a very intimate and secure IM tool, it means that the information from me is not important enough, and most people should be like me as an ordinary micro-credit user. But there are a bunch of users who need to ensure that information is highly confidential or intimate with a user like coverme (trustworthy ...).

The "TechWeb report" Photo reveal is an application that can hide images of text and sound information. That's right! What about this? Your confidential information is the first to use AES to encrypt the encryption based on the supplied password, and then they will embed the difference between the images in the original photo, which generates an image by our application is not visible. Hide your confidential information you can use any type of image to indicate that the Office of Internal oversight can be processed and saved in your photo gallery. You can also use an image built in camera ...

CryptoHeaven is an email integrated tool, similar to the http://www.aliyun.com/zixun/aggregation/14454.html we often use ">exchange and homemade foxmail, It also incorporates information transfer tools such as OICQ. CryptoHeaven software is developed to accelerate wide u ...

Absrtact: If I don't need a privacy and security very high IM tool, that means the information from my circulation is not important enough, most people should be like me is a common micro-credit households. But there's a pinch to keep information highly confidential or if I don't need a very intimate and secure IM tool, it means that the information from me is not important enough, and most people should be like me as an ordinary micro-credit user. But there is a pinch of information to ensure a high degree of confidentiality or privacy of users use is like Coverme (trustworthy), Ti ...

Research on data access control method in cloud computing Nanjing University of Posts and telecommunications This paper proposes an attribute-based access control model (DACC) for cloud computing environment using CP-ABE encryption algorithm. The core idea is to use the AES symmetric encryption algorithm and the Cp-abe encryption algorithm, respectively to encrypt the data and symmetric key, and the user of the attribute matching to decrypt the key cipher text and the data cipher in sequence. In order to reduce the cost of storing and updating keys, the Key Distribution center KDC is introduced to manage attributes and keys. Cloud computing Service Provider ...

Samhain is a daemon that can check the integrity of files, search the file tree for suid files, and detect kernel modules http://www.aliyun.com/zixun/aggregation/16938.html "> Rootkit (Linux only). It can be used for both stand-alone and centralized monitoring of client/server systems, strong (192-bit AES) encrypted client/server connections and options for databases and configuration files stored on the server ...