Swift

PBKDF1 - Derive Key from Password

See more Encryption Examples

Demonstrates how to derive a symmetric encryption key from a password using PBKDF1. This example matches the results found at this URL: http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf

It also matches the output produced by the .NET Framework using this C# code:

            byte[] salt = new byte[] { 0x78, 0x57, 0x8E, 0x5A, 0x5D, 0x63, 0xCB, 0x06 };
            PasswordDeriveBytes cdk = new PasswordDeriveBytes("password", salt);

            cdk.IterationCount = 1000;
            cdk.HashName = "SHA1";

            // generate a 16-byte key
            byte[] key = cdk.GetBytes(16);

Swift

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

    let crypt = CkoCrypt2()!

    var hexKey: String?
    // http://www.di-mgt.com.au/cryptoKDFs.html#examplespbkdf

    var pw: String? = "password"
    var pwCharset: String? = "ansi"
    // Hash algorithms may be: sha1, md2, md5, etc.
    var hashAlg: String? = "sha1"
    // The salt should be 8 bytes:
    var saltHex: String? = "78578E5A5D63CB06"
    var iterationCount: Int = 1000
    // Derive a 128-bit key from the password.
    var outputBitLen: Int = 128

    // The derived key is returned as a hex or base64 encoded string.
    // (Note: The salt argument must be a string that also uses
    // the same encoding.)
    var enc: String? = "hex"

    hexKey = crypt.pbkdf1(password: pw, charset: pwCharset, hashAlg: hashAlg, salt: saltHex, iterationCount: iterationCount, outputKeyBitLen: outputBitLen, encoding: enc)

    print("\(hexKey!)")

    // The output should have this value:
    // DC19847E05C64D2FAF10EBFB4A3D2A2

}