COMPUTER FUNDAMENTALS

Detailed explanation-1: -With asymmetric cryptography: Each user has two keys: a public key and a private key. Both keys are mathematically related (both keys together are called the key pair). The public key is made available to anyone.

Detailed explanation-2: -Asymmetric keys are the foundation of Public Key Infrastructure (PKI) a cryptographic scheme requiring two different keys, one to lock or encrypt the plaintext, and one to unlock or decrypt the cyphertext. Neither key will do both functions. One key is published (public key) and the other is kept private (private key).

Detailed explanation-3: -Public Key (or asymmetric encryption) In a public key system, two keys are used, one for encrypting and one for decrypting. The two keys are mathematically related to each other but knowing one key does not divulge the other key. The two keys are called the “public key” and the “private key” of the user.

Detailed explanation-4: -More important, public-key cryptography is asymmetric, involving the use of two separate keys, in contrast to symmetric encryption, which uses only one key. The use of two keys has deep consequences in the areas of confidentiality, key distribution, and authentication.

Detailed explanation-5: -The two main uses of asymmetric-key algorithms are public-key encryption and digital signatures. Public-key encryption is a method where anyone can send an encrypted message within a trusted network of users.