DataFlex

PBKDF2 - Derive Key from Password

See more Encryption Examples

Demonstrates how to derive a symmetric encryption key from a password using PBKDF2. DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoCrypt
    String sPw
    String sPwCharset
    String sHashAlg
    String sSaltHex
    Integer iIterationCount
    Integer iOutputBitLen
    String sEnc
    String sHexKey

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

    Get Create (RefClass(cComChilkatCrypt2)) To hoCrypt
    If (Not(IsComObjectCreated(hoCrypt))) Begin
        Send CreateComObject of hoCrypt
    End

    Move "password" To sPw

    Move "utf-8" To sPwCharset

    // Such as sha256, sha512
    Move "sha256" To sHashAlg

    // 16 bytes
    Move "78578E5A5D63CB0668AB39B21C8637FA" To sSaltHex

    Move 100000 To iIterationCount

    // Derive a 256-bit key from the password.
    Move 256 To iOutputBitLen

    // 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.)
    Move "hex" To sEnc

    Get ComPbkdf2 Of hoCrypt sPw sPwCharset sHashAlg sSaltHex iIterationCount iOutputBitLen sEnc To sHexKey

    Showln sHexKey

    // Sample output:
    // AE96E261E32792D0FD6F0E72F8E872D046F7DB4C1FA7C83892EC73C49F461B70


End_Procedure