| DESCRIPTION | 
| Purpose | A dkim_canon_t is a value from an enumerated list of the possible
    message canonicalization algorithms available.  It is passed as a
    parameter to dkim_sign() when
    selecting a canonicalization algorithm to be used when preparing a message
    body for signing.  It need not be passed to
    dkim_verify() as that function
    will determine the canonicalization algorithm for verification based on the
    signature on an arriving message. |  
| Possible Values | 
 DKIM_CANON_RELAXED -- "relaxed" canonicalization as defined
     in RFC6376
 DKIM_CANON_SIMPLE -- "simple" canonicalization as defined
     in RFC6376
 |  | 
|---|