(Visual FoxPro) BCrypt Verify a Password (Check if Password is Correct)

A system that uses BCrypt for storing passwords would not store the actual password, but would instead store the bcrypt hash of the password. When a user presents the password, such as for login, call BCryptVerify to verify the password against the stored bcrypt hash.

Note: This example requires Chilkat v9.5.0.65 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

LOCAL loCrypt
LOCAL lcStoredHash
LOCAL lcPassword
LOCAL lnPasswordValid

* This example assumes the Chilkat API to have been previously unlocked.
* See Global Unlock Sample for sample code.

* For versions of Chilkat < 10.0.0, use CreateObject('Chilkat_9_5_0.Crypt2')
loCrypt = CreateObject('Chilkat.Crypt2')

lcStoredHash = "$2a$10$H5kIVktMGzAPKGKNAe9DVu0iwEqfhv/o4MMJ/Dzw/MPy1leOE9NOK"
lcPassword = "mySecretPassword"

lnPasswordValid = loCrypt.BCryptVerify(lcPassword,lcStoredHash)
IF (lnPasswordValid = 1) THEN
    ? lcPassword + " is valid."
ELSE
    ? lcPassword + " is NOT valid."
ENDIF

lcPassword = "notAValidPassword"
lnPasswordValid = loCrypt.BCryptVerify(lcPassword,lcStoredHash)
IF (lnPasswordValid = 1) THEN
    ? lcPassword + " is valid."
ELSE
    ? lcPassword + " is NOT valid."
ENDIF

* Output should be:

* 	mySecretPassword is valid.
* 	notAValidPassword is NOT valid.

RELEASE loCrypt