Encryption
* allows information to be translated into un-decipherable code
  - people to use electronic envelopes to protect their speech
* also gives criminals and terrorists the means of keeping their nefarious plans secret.
* basic technology that is in great demand.
* can be a complex and sophisticated approach to protecting confidential data
  - exist in many different forms
  - help keeping data and communication confidential
  - protect data while it is in transit, from one party to another
  - provide a means of securing information
* complex technology.
* critical technology for securing information as it passes through the Internet.
* depends upon the use of keys.
* ensures the privacy of information on any transport or storage medium.
* fundamental building block of the information age.
* has a long tradition in the military defence field
  - applications in many areas, including electronic commerce and message authentication
* helps protect private data from interception by a third party.
* involves the encoding of material such that the information is relatively inaccessible
  - scrambling of data through a hardware or software embedded algorithm
* is also important on the database that contains the biometric information.
* is an easy way to protect vital data
  - effective way to achieve data security
* is an essential component of information security
  - part of the right to human expression protected under the Constitution
  - important element in our search for internet security
* is another method used to provide data security on the net
  - type of security measure used to protect data and information
* is at the heart of most digital commerce done over the Internet
  - the growing Internet economy
* is based on a key that has two different parts
  - factoring numbers into a product of primes
  - public and private key technology
* is based on the kind of mathematical calculations that fill a blackboard
  - mathematical scrambling and unscrambling of messages
  - both the first and last line of Internet security
  - critical to the future of on-line privacy
  - designed for transmission security
  - essential to hundreds of billions of dollars of e-commerce
  - extremely important for passwords
  - important in protecting client message data
  - like putting a letter in an envelope
* is one form of cryptography
  - mechanism used for secrecy
  - of the best techniques to maintain the confidentiality of messages
  - tool often mentioned when talking about securing music
  - only one form of concealment
  - seen by many people as a necessary step for commerce on the internet to succeed
  - software technology that locks computerized information to keep it private
  - speech protected by the First Amendment
  - speech, and as such is entitled to protection
  - standard practice for commerce on the internet
  - technology that scrambles computer files and communications to protect privacy
* is the actual process of hiding the message
  - armored car of the Internet
  - best way to protect information communicated over the Internet
  - coding of the message so only the intended recipient can read
  - conversion of a message into an unreadable form
  - envelope for the digital age
  - glue and tape that seals an envelope
  - locking of a message and decryption is the unlocking
* is the main component providing security within payment systems
  - way of achieving confidentiality using computers
  - most effective way to achieve data security
  - only safe way to store confidential documents on a local hard drive
  - principal technology for message secrecy
* is the process of converting data into a secure format for transmission
  - information into a more secure format for transmission
  - disguising information into an unreadable form
  - encoding data for security purpose
* is the process of scrambling a message so that only the intended recipient can read it
  - confidential electronic data into undecipherable code
  - data so that only the intended receiver can use it
  - scrambling of information for transmission back and forth between two points
  - second building block for security protocols
  - single most powerful and effective technology for protecting privacy
  - technology used to protect information sent over the Internet
* is the transformation of data into a form unreadable by anyone without a decryption key
  - some unreadable form
* is the translation of data into a secret code
  - a type of secret code
  - use of some means to disguise or obscure the meaning of a message
  - way in which information is scrambled when it is sent over the Internet
* is used for all messages after a simple handshake is used to define a secret key
  - many different things
  - security purposes
  - in more computer and network products for security purposes
* is used to ensure that all transactions are secure
  - further secure the data contained in the packets
  - keep online communications like e-mail private
  - maintain the confidentiality of private data when traveling over the Internet
  - prevent making copies
* is used to protect against eavesdropping
  - spoofed packets and hijacked connections
  - personal or business data from hackers or competitors
  - store the code in a secret way
  - verify messages, validate and authenticate users and authorize transactions
  - vital for the protection of private information in digital form
* makes secrecy of identity easy, thereby creating a market for identity.
* mathematical mechanism designed to protect sensitive information.
* matter of clicking on a button or pressing a hot key.
* means any procedure to convert plaintext into ciphertext.
* means of scrambling information for transmission between computer systems
  - to protect it as it travels across the Internet
* means to achieve that privacy
  - ensure confidentiality
  - turning meaningful words and numbers into coded language
* method for scrambling data in order to make electronic communications more secure.
* method of disguising data so that no outsiders can read it
  - scrambling information to prevent others from intercepting it
* modern form of computer deletion for redaction purposes.
* permits buyers and sellers to verify and authenticate a transaction over the Internet.
* process of mathematically scrambling data
  - turning written language into a scrambled, unrecognizable form
* prohibits eavesdropping in electronic data exchange media.
* promotes national security, prevents crime, and protects privacy.
* protects data from being monitored while it is being transmitted
  - information from interception or eavesdropping as it transits the Internet
  - private data in the event that an intruder gains physical access to a computer
* protects private information from being divulged even over open networks
  - discovery when transmitted, even over open networks
  - the security and privacy of communications and stored data
* provides privacy by protecting email as it moves over the Internet.
* refers to any procedure to convert plain text into cipher text.
* secret code that scrambles all data and every message sent to and from the server.
* secure means of transferring sensitive files.
* technology that employs complex mathematical algorithms to encode data.
* transforms a message into a ciphertext using an encryption key.
* transforms data into an unreadable form to ensure privacy
  - some unreadable form to ensure privacy
* uses a mathematical formula to decrypt data
  - codes based on mathematical algorithms to make communications secure
  - mathematical algorithms that substitute strings of numbers for bits of information
  - the factoring of large numbers to restrict access to certain files and locations
* using public or private keys can protect messages from packet sniffers.
* very important role in computer privacy.
* way of protecting the content of messages
  - scrambling data so that only users with the right key can read the data
* way to rewrite something in a code, which can be decoded later with the right key
  - write something in code, which can be decoded later with the right key
+ Prime number, What prime numbers are used for: Number theory
  * This card is protected by a secret access code. Since the code needs to be kept secret, it cannot be stored in cleartext on the card. Encryption is used to store the code in a secret way. This encryption uses multiplications, divisions, and finding remainders of large prime numbers. An algorithm called RSA is often used in practice. It uses the Chinese remainder theorem.