"Show Password" in Keychain Access doesn't work I am having a problem, as a program is requesting my RSA password but my Mac won't let me see it. As I check the "show password" (mostrar contraseña) chechbox, it immediately unmarks itself. 

I already tried "Repair" and turning the computer off and on again (as if it ever worked) and of course, it didn't fix it.

Any suggestions?
To get the password from your keychain . You can right click on that item of which you need the password and click on "copy the password to clipboard", then you will ask to enter the login password , after that you can paste the password where you want. 

PFA: