Manual:$wgHKDFSecret

From Linux Web Expert

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

Details

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.