What is key in cryptography?

Question

Can anyone tell me what is key in cryptography?

Answer 1

In cryptography, a key is a string of characters that is applied using an algorithm to convert a string or block of unencrypted data to encrypted data, or vice-versa.

A cryptographic key is just like a physical key. This locks (encrypts) the information so that only those particular people with the right key can unlock (decrypt) the information.

If you want to learn more, check out this Cryptography Tutorial Blog by Intellipaat.

Also, watch this video on Cryptography: