(Swift) Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password) ) )

Demonstrates how to compute:

Password_Digest = Base64 (SHA-1 ( nonce + created + SHA-1 (password)))

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

func chilkatTest() {
    //  This example requires the Chilkat API to have been previously unlocked.
    //  See Global Unlock Sample for sample code.

    var password: String? = "secret"

    let crypt = CkoCrypt2()
    crypt.HashAlgorithm = "SHA-1"
    crypt.EncodingMode = "base64"

    //  Generate a 16-byte random nonce
    let prng = CkoPrng()
    let bd = CkoBinData()
    prng.GenRandomBd(16, bd: bd)

    //  Get the current date/time in a string with this format: 2010-06-08T07:26:50Z
    let dt = CkoDateTime()
    dt.SetFromCurrentSystemTime()
    var created: String? = dt.GetAsTimestamp(false)
    bd.AppendString(created, charset: "utf-8")

    //  This example wishes to calculate a password digest like this:
    //  Password_Digest = Base64 ( SHA-1 ( nonce + created + SHA-1(password) ) )

    //  First SHA-1 digest the password...
    var passwordSha1: String? = crypt.HashStringENC(password)
    //  Append the 20 binary bytes of the SHA1 hash to bd, which already contains the nonce and created date/time.
    bd.AppendEncoded(passwordSha1, encoding: "base64")

    var passwordDigest: String? = crypt.HashBdENC(bd)

    print("Base64 password digest = \(passwordDigest!)")

}