Betty receives a cipher text message from her colleague Tim. Decryption type of function does betty need to use to read the plaintext message
Converting encrypted data back to its original form is called decryption. This is basically the reverse process of encryption. Because it decrypts encrypted information, only authorized users can decrypt the data because decryption requires a private key or password.
2 Suppose x = y is established. Then the key of the function is fixed and all possible values of x and y can be mapped. Simply put, this happens during decryption. The example shown is one that can be easily resolved using so-called "brute force" means.
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