4.25. Encryption method registration
To identify with which method a frame has been encrypted the
encryption method must be registered in the tag with this frame. The
'Owner identifier' is a null-terminated string with a URL [URL]
containing an email address, or a link to a location where an email
address can be found, that belongs to the organisation responsible
for this specific encryption method. Questions regarding the
encryption method should be sent to the indicated email address. The
'Method symbol' contains a value that is associated with this method
throughout the whole tag, in the range $80-F0. All other values are
reserved. The 'Method symbol' may optionally be followed by
encryption specific data. There may be several "ENCR"
frames in a tag
but only one containing the same symbol and only one containing the
same owner identifier. The method must be used somewhere in the tag.
See the description of the frame encryption flag in the ID3v2
structure document [ID3v2-strct] for more information.
<Header for 'Encryption method registration', ID: "ENCR">
Owner identifier <text string> $00
Method symbol $xx
Encryption data <binary data>
@author Eric Farng
@version $Revision: 1.4 $