Automatic CTRL-D (EOF)

Hi,

I have a script that has to perform a hash over a password.
Problem is that sha512sum expects CTRL-D to be pressed to return to the 
command prompt.

I've searched all over Google, but either I didn't use the right search 
strings or there is nothing relevant about this.

Bottom line is that I need this command to print the password hash and 
returns to the shell automatically:

$ sha512sum | xargs echo "password" | cut -f2 -d' '

Tried:

$ read x; echo "$x" |  sha512sum | xargs echo "password" | cut -f2 -d' '

but no good and as a bonus (NOT) the hash is incorrect.

Any help would be appreciated.

Warm Regards,
Mário Gamito
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