(DataFlex) Get an Ed25519 Key in Raw Hex Format

Demonstrates how to get the private and public key parts of an Ed25519 key in lowercase hex formmat.

Note: This example requires Chilkat v9.5.0.83 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

Use ChilkatAx-win32.pkg

Procedure Test
    Handle hoPrivKey
    Boolean iSuccess
    Variant vSbPubKeyHex
    Handle hoSbPubKeyHex
    String sPrivKeyHex
    String sTemp1
    Integer iTemp1

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

    // Load an Ed25519 key from some format..
    Get Create (RefClass(cComChilkatPrivateKey)) To hoPrivKey
    If (Not(IsComObjectCreated(hoPrivKey))) Begin
        Send CreateComObject of hoPrivKey
    End

    // This loads an Ed25519 key from an unencrypted PEM file (no password required).
    Get ComLoadAnyFormatFile Of hoPrivKey "qa_data/eddsa/ed25519.pem" "" To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPrivKey To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // The key type should be "ed25519" to indicate an Ed25519 key.
    Get ComKeyType Of hoPrivKey To sTemp1
    Showln "key type = " sTemp1

    // What is the size of the private key in bits?  (should always be 256 bits for Ed25519)
    Get ComBitLength Of hoPrivKey To iTemp1
    Showln "size in bits = " iTemp1

    // Get the private and public key parts in raw hex format:
    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbPubKeyHex
    If (Not(IsComObjectCreated(hoSbPubKeyHex))) Begin
        Send CreateComObject of hoSbPubKeyHex
    End
    Get pvComObject of hoSbPubKeyHex to vSbPubKeyHex
    Get ComGetRawHex Of hoPrivKey vSbPubKeyHex To sPrivKeyHex

    // We should have a 32-byte private key (a 64 character hex string).
    Showln "private key = " sPrivKeyHex

    // We should have a 32-byte public key (a 64 character hex string).
    Get ComGetAsString Of hoSbPubKeyHex To sTemp1
    Showln "public key = " sTemp1

    // Sample output:
    // key type = ed25519
    // size in bits = 256
    // private key = d4ee72dbf913584ad5b6d8f1f769f8ad3afe7c28cbf1d4fbe097a88f44755842
    // public key = 19bf44096984cdfe8541bac167dc3b96c85086aa30b6b6cb0c5c38ad703166e1


End_Procedure