Can the encrypted string get smaller?

Question

Programming

There is a line "Hi, Vasya. Your password: Rembobo3020. Login?))".
Is there an option to encrypt it so that in the end it was something like "R% & FMJ11", that is, shorter than the original in terms of the number of characters?

Answer 1

In theory, maybe. For example, encode with a dictionary, where 1 dictionary element encodes more than 1 letter. But in this case there can be no talk of optimality.

Answer 2

Here . See lossless compression algorithms. Although I don’t think it will be possible to compress the string so much, unless there are a lot of repeating letters.

Answer 3

By the number of characters is unlikely. By the number of bits per character - you can.
More complex compression algorithms on such short strings are most likely unrealistic.
But you can also try the algorithm with a dictionary, naturally both should have the same dictionaries tailored to your conversations. And if this hits the "enemy", the probability of decryption will decently increase.

Answer 4

you're talking nonsense, no

Answer 5

write in caps and Latin, the alphabet will decrease from 256 to 60 and you can already try there

Answer 6

GPG uses compression first and only then encryption. As a result, GPG encrypted data is usually smaller than the original.

Answer 7

"Brought you hello"
at = 1
the line has already become smaller:
"1brought you 1vet"