AutoIt Requires Chilkat v11.6.0+

Hash a Password with Argon2 (Tuned Options)

Demonstrates Crypt2.Argon2HashPassword with explicit options: the cost parameters, saltLen (how many random salt bytes to generate when no salt is given), and an optional secret (pepper).

Background. For hashing, the salt is optional — when omitted, a random salt of saltLen bytes (default 16) is generated, which is the normal case. A secret or ad is not stored in the PHC string; the same values must be supplied to Argon2VerifyPassword for the password to verify.

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$oCrypt = ObjCreate("Chilkat.Crypt2")

;  The password should come from a secure source rather than being hard-coded.
Local $sPassword = "correct horse battery staple"

;  The Argon2 options are the same members as Argon2DeriveKey, except the salt is optional for
;  hashing.  When no "salt" is given, a random salt is generated; "saltLen" (default 16, range 8..1024)
;  sets how many random bytes to use.
$oJson = ObjCreate("Chilkat.JsonObject")
$oJson.UpdateString("variant","argon2id")
$oJson.UpdateInt("memoryCostKb",131072)
$oJson.UpdateInt("iterations",4)
$oJson.UpdateInt("parallelism",2)
$oJson.UpdateInt("saltLen",16)

;  A secret (pepper) and/or ad may be used, but neither is stored in the returned PHC string.  The
;  same values must be supplied to Argon2VerifyPassword for the password to verify.
$oJson.UpdateString("secret","application-wide-pepper")
$oJson.UpdateString("secretEncoding","utf-8")

Local $sPhcHash = $oCrypt.Argon2HashPassword($sPassword,$oJson.Emit())
If ($oCrypt.LastMethodSuccess = False) Then
    ConsoleWrite($oCrypt.LastErrorText & @CRLF)
    Exit
EndIf

ConsoleWrite($sPhcHash & @CRLF)