change the passphrase...

[Dominik Schwald]

Hi, 
how does the changing of the passphrase work? 
As it is possible to change the passphrase that means (to me) that the 
secretKey "knows" the passphrase.

In detail:

If i create a new key and set the password to e.g. "supersecret_1" and 
put a copy of that secretKey somewhere, than i change the passphrase to 
"supersecret_2".
Am i right that it's now possible to use the first secretKey with the 
first passphrase  for signing/encryption  AS  WELL  AS  the second 
secretKey with its passphrase..?

Regards, dominik