How to store login/pass data in localstorage?

Question

User identification

I am developing a game launcher and there is a need for multi-account. There is no verification of the correctness of the Login / Password in the launcher.

It is necessary to add the ability to save the Login / Pass pair in LocalStorage, while at least somehow encrypting the password. And pass the already decrypted password to exec java -jar app.jar login pass .

In which direction should you dig?

Answer 1

On the server, using some RSA, you can encrypt the login and password into a single Object, and send it to the client so that he writes it to LocalStorage. Then, when necessary, the client decrypts using the public key and does what he needs.

Answer 2

If you do not have a provincial region and you are in 1-2 places for issuing requests to buy, sell, rent, rent, etc. an apartment, this cannot be. 200 uniques cannot be from such a request.
Hence the conclusion, you either lied about the requests, or you have a provincial town where there are few people.

Answer 3

If you are really in 1-2 place in the Yandex search results, then you should take up other methods of promotion - contextual advertising (Direct and Adwords), advertising in social networks. networks, advertising in mailing lists, writing and publishing useful (non-advertising) articles on various resources on relevant topics.
As for the conversion, no one will give you recommendations, since there is neither a link to the site, nor current statistics. Pointing your finger at the sky is pointless.