(Go) 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 Go Downloads Go Package for Windows, MacOS, Linux, Alpine Linux, Solaris

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

    crypt := chilkat.NewCrypt2()

    storedHash := "$2a$10$H5kIVktMGzAPKGKNAe9DVu0iwEqfhv/o4MMJ/Dzw/MPy1leOE9NOK"
    password := "mySecretPassword"

    passwordValid := crypt.BCryptVerify(password,storedHash)
    if passwordValid == true {
        fmt.Println(password, " is valid.")
    }
    else {
        fmt.Println(password, " is NOT valid.")
    }

    password = "notAValidPassword"
    passwordValid = crypt.BCryptVerify(password,storedHash)
    if passwordValid == true {
        fmt.Println(password, " is valid.")
    }
    else {
        fmt.Println(password, " is NOT valid.")
    }

    // Output should be:

    // 	mySecretPassword is valid.
    // 	notAValidPassword is NOT valid.

    crypt.DisposeCrypt2()