Password: Hello World!
Retype password: Hello World!
The 32 characters it returns are the encrypted password. I show the example password in red, in reality nothing will show on the screen as you type.
The differences are: a) You must type your password 2ce -- much safer, & b) No "Encrypted: " preceding the encryption.
The info system is antiquated & should deprecated in favor of almost anything else, especially good man pages. Probably the worst thing about it is the Byzantine structure & (usually) no decent index. Fortunately RMS is tacitly admitting this by allowing info pages to be turned into HTML. When you use the "entirely on one web page" version, you can search the whole manual at once.
In any case, the GRUB manual is here:
and the instructions, such as they are, for grub-md5-crypt here: