Using public-key encryption, the sender and recipient of a message do not need to agree on a shared secret key before initiating secure communications. How is this possible? That is, how can the sender, using publicly available information, encode a message that can be decoded only by the intended recipient?
What will be an ideal response?
The idea behind public-key encryption is to assign each party a pair of associated keys, one of which is public and the other private. A message encoded with a public key requires the corresponding private key for decoding, and vice versa. Thus, if you know a party’s public key, you can encode a message that only they can decode with their private key, and without having to know their private key yourself.
You might also like to view...
Which data type enables you to store numeric values that need to be calculated?
A) Short Text B) Number C) Auto Number D) Logical
Answer the following statements true (T) or false (F)
1) Records in random-access files must be of uniform length. 2) Module cPickle performs more efficiently than does module pickle because cPickle is written in Python. 3) Serialization converts complex objects to a set of bytes. 4) Method sys.exit returns 1 by default to signify that no errors occurred. 5) Sequential-access files are inappropriate for instant-access applications in which records must be located quickly.