DataFlex

PBES2 Password-Based Encryption

See more Encryption Examples

Demonstrates PBES2 encryption DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoCrypt
    String sPlainText
    String sEncryptedText
    String sDecryptedText

    // 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

    // Set properties for PBES2 encryption:

    // When the encryption algorithm is set to "pbes2",
    // Chilkat will automatically derive the actual secret key using PBKDF2 and
    // the specified paramters: password, salt, iteration count, hash function, and desired key length.

    Set ComCryptAlgorithm Of hoCrypt To "pbes2"
    Set ComPbesPassword Of hoCrypt To "mySecretPassword"

    // Set the underlying PBE algorithm (and key length):
    Set ComPbesAlgorithm Of hoCrypt To "aes"
    Set ComKeyLength Of hoCrypt To 256

    Send ComSetEncodedIV To hoCrypt "000102030405060708090A0B0C0D0E0F" "hex"

    // Give it some salt:
    Send ComSetEncodedSalt To hoCrypt "0102030405060708" "hex"

    // A higher iteration count makes the algorithm more
    // computationally expensive and therefore exhaustive
    // searches (for breaking the encryption) is more difficult:
    Set ComIterationCount Of hoCrypt To 1024

    // A hash algorithm needs to be set for PBES2:
    Set ComHashAlgorithm Of hoCrypt To "sha256"

    // Indicate that the encrypted bytes should be returned
    // as a hex string:
    Set ComEncodingMode Of hoCrypt To "hex"

    Move "To be encrypted." To sPlainText

    Get ComEncryptStringENC Of hoCrypt sPlainText To sEncryptedText

    Showln sEncryptedText

    // Now decrypt:
    Get ComDecryptStringENC Of hoCrypt sEncryptedText To sDecryptedText

    Showln sDecryptedText


End_Procedure