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The diffie hellman key exchange uses prime numbers to generate an asymmetric key pair which is used to create a secure channel over which a privet symmetric key can be sent.

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What are the difference between DES and RSA algorithm?

DES is a symmetric cryptographic algorithm, while RSA is an asymmetric (or public key) cryptographic algorithm. Encryption and decryption is done with a single key in DES, while you use separate keys (public and private keys) in RSA. DES uses 56-bit keys for encryption while RSA uses 2600-bits of KEY


How many keys are required for two people to communication via a cipher?

That depends on whether you use a symmetric (shared key) or asymmetric (public/private key pair) algorithm. If you use a symmetric key, it means both people have the same key which has been pre-shared via some secure means. In that case, only one key is required; both parties in the communication use the same key to encrypt and decrypt all messages. If you use an asymmetric key algorithm, it takes at least 4 keys total: when sending a message each user will encrypt their message with the public key of the recipient (that accounts for two of the keys). Each recipient must then use their private key to decrypt the messages they receive (which accounts for the other two required keys).


What is the diffie-hellman cipher?

Diffie-Hellman is not as much a cipher as a means of securing exchanging keys. You would use it to securely notify someone else of a symmetric shared key that you both would use for encrypting data. Think of it as more a key exchange method utilizing public and private keys than an actual cipher methodology.


What is the difference between AES and RSA?

AES is a symmetric cryptographic algorithm, while RSA is an asymmetric (or public key) cryptographic algorithm. Encryption and decryption is done with a single key in AES, while you use separate keys (public and private keys) in RSA. The strength of a 128-bit AES key is roughly equivalent to 2600-bits RSA key.


Which encryption protocol uses pre-shared keys to authenticate users pre- shared keys to authenticate users?

WPA


What is the difference between using open authentication and pre-shared keys?

Open authentication requires a password. Pre-shared keys do not require a password.


Which key is often used to securely distribute symmetric algorithm keys?

Session key


What is The system of algorithm parameters keys andor passwords used for encrypting and decrypting data is called what?

A


Which encryption protocol use pre- shared keys to authenticate?

WPA


What is the process of implementing the B tree deletion algorithm to efficiently remove nodes in a B tree data structure?

The process of implementing the B tree deletion algorithm involves identifying the node to be deleted, redistributing keys and pointers if necessary, and adjusting the tree structure to maintain balance and order. This algorithm efficiently removes nodes in a B tree data structure by carefully managing the redistribution of keys and pointers to maintain the properties of the tree.


What is the most popular symmetric encryption system used over the Web?

The most common hybrid system is based on the Diffie-Hellman key exchange, which is a method for exchanging private keys using public key encryption. Diffie-Hellman key exchange uses asymmetric encryption to exchange session keys. These are limited-use symmetric keys for temporary communications; they allow two entities to conduct quick, efficient, secure communications based on symmetric encryption, which is more efficient than asymmetric encryption for sending messages. Diffie_Hellman provides the foundation for subsequent developments in public key encryption. It protects data from exposure to third parties, which is sometimes a problem when keys are exchanged out-of-land.


Can you get spare home keys at Home Depot?

They make house keys for Schlage and Kwikset locks. If your home has one of those two brands of locks (or one of the hundreds of private-branded locks that use Kwikset-patterned keys) you can get spare keys there.