Security: $wgHKDFSecret
Secret for HMAC-based key derivation function (fast, cryptographically secure random numbers).
Introduced in version:1.24.0 (Gerrit change 137077; git #af66c04d)
Removed in version:still in use
Allowed values:(string) or false
Default value:false


If the value is a string, it is used as the secret for the HMAC-based key derivation function, else, if it is evaluated as false, $wgSecretKey is used for this function.