LYCOS RETRIEVER 
Encryption
built 202 days ago
Encryption is a technique used to render a message indecipherable. Only a person knowing the correct secret key can reconstruct the original message. While historically encryption has mainly been used by governments and military organizations, it is today ... very important to protect commercial electronic transactions and private communications. So-called public key encryption allows anyone to encrypt a message for a particular recipient using publicly available information. This recipient has corresponding secret information which he uses to decrypt the message. This eliminates the problem of how to agree on a secret key can only an insecure electronic communication channel is available.
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Highlighted in this release as part of the PGP Encryption Platform's new Secure Delivery functionality is PDF Messenger, which ensures secure email communication regardless of the recipient's infrastructure. Proven by enterprises worldwide in pre-release testing, Secure Delivery functionality protects communications without requiring additional installed software. Recipients simply continue to use the software they already have installed-a mail client, a Web browser, or a standard PDF reader-to securely receive, read, and reply to email messages. Corporate policies are automatically and uniformly applied to outgoing messages to help ensure compliance.
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PGP Whole Disk Encryption protects intellectual property, customer data, and brand equity with transparent, full disk encryption that locks down a drive without changing user behavior or workflow. The application secures data from multiple threats with a single, centrally managed client, making theft or loss of a system or removable media far less damaging to a user or business. It ... provides safe, single sign-on to Microsoft Windows through password synchronization, and is available for Mac OS X non-boot drives, enabling removable media to be encrypted and shared between users on different operating systems.
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Encryption, by itself, can protect the confidentiality of messages, but other techniques are still needed to protect the integrity and authenticity of a message; for example, verification of a message authentication code (MAC) or a digital signature. Standards and cryptographic software and hardware to perform encryption are widely available, but successfully using encryption to ensure security may be a challenging problem. A single slip-up in system design or execution can allow successful attacks. Sometimes an adversary can obtain unencrypted information without directly undoing the encryption. See, e.g., traffic analysis, TEMPEST, or Trojan horse.
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Encryption is used on the Internet. Web sites use encryption to protect private information. The encryption on the internet is called Secure Sockets Layer (SSL). It uses the RSA encryption system. The protocol for protected web browsing is called HTTPS.
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Encryption has long been used by militaries and governments to facilitate secret communication. Encryption is now used in protecting information within many kinds of civilian systems, such as computers, networks (e.g. the Internet e-commerce), mobile telephones, wireless microphones, wireless intercom systems, Bluetooth devices and bank automatic teller machines. Encryption is ... used in digital rights management to prevent unauthorized use or reproduction of copyrighted material and in software also to protect against reverse engineering (see also copy protection).
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