to_string

Gets the string representation of the Autocrypt header, or null on error.

For example, it might return:

prefer-encrypt=mutual; addr=bob@example.com; keydata=AAAB15BE...

If you are using this object to populate an Autocrypt-Gossip header, you should set gossip to true (this will suppress inclusion of prefer-encrypt).

Parameters:

this	a AutocryptHeader object
gossip	a bool, indicating whether this header is for use with gossip

Returns:

the string representation of the Autocrypt header.