DataFlex

PKCS11 Generate a Session EC Key on the HSM

See more PKCS11 Examples

Generates an EC key on the smart card or token and returns the public and private key handles. The generated EC key exists only for the duration of the PKCS11 session.

Note: This example requires Chilkat v9.5.0.96 or later.

DataFlex

Use ChilkatAx-win32.pkg

Procedure Test
    Boolean iSuccess
    Handle hoPkcs11
    String sPin
    Integer iUserType
    Variant vPubKey
Attr    Handle hoPubKeyAttr
    Variant vPrivKeyAttr
    Handle hoPrivKeyAttr
    Variant vJsonHandles
    Handle hoJsonHandles
    Variant vPubKey
    Handle hoPubKey
    String sTemp1
    Integer iTemp1

    Move False To iSuccess

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

    // Note: Chilkat's PKCS11 implementation runs on Windows, Linux, Mac OS X, and other supported operating systems.

    Get Create (RefClass(cComChilkatPkcs11)) To hoPkcs11
    If (Not(IsComObjectCreated(hoPkcs11))) Begin
        Send CreateComObject of hoPkcs11
    End

    // Use the PKCS11 driver (.dll, .so, .dylib) for your particular HSM.
    // (The format of the path will change with the operating system.  Obviously, "C:/" is not used on non-Windows systems.
    Set ComSharedLibPath Of hoPkcs11 To "C:/Program Files (x86)/Gemalto/IDGo 800 PKCS#11/IDPrimePKCS1164.dll"

    // Establish a logged-on session.
    Move "0000" To sPin
    Move 1 To iUserType
    Get ComQuickSession Of hoPkcs11 iUserType sPin To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    // Specify attributes and abilities (how this key can be used) by providing a JSON template.
    // One template is for the public key, and the other for the private key.
    Get Create (RefClass(cComChilkatJsonObject)) To hoPubKeyAttr
    If (Not(IsComObjectCreated(hoPubKeyAttr))) Begin
        Send CreateComObject of hoPubKeyAttr
    End

    // Allow the public key to be used for signature verification
    Get ComUpdateBool Of hoPubKeyAttr "verify" True To iSuccess

    // Specify the kind of EC key to generate by the curve name
    // Possible curve names are:
    // secp256r1  (also known as P-256 and prime256v1)
    // secp384r1  (also known as P-384)
    // secp521r1  (also known as P-521)
    // secp256k1 (This is the curve used for Bitcoin)
    // secp192r1
    // secp224r1
    // brainpoolP160r1
    // brainpoolP192r1
    // brainpoolP192r1
    // brainpoolP224r1
    // brainpoolP256r1
    // brainpoolP320r1
    // brainpoolP384r1
    // brainpoolP512r1
    // Note: Your smart card or token might not support all of the above EC curves (assuming it supports EC at all).

    // This attribute is required.
    Get ComUpdateString Of hoPubKeyAttr "ec_params" "secp256r1" To iSuccess

    Get Create (RefClass(cComChilkatJsonObject)) To hoPrivKeyAttr
    If (Not(IsComObjectCreated(hoPrivKeyAttr))) Begin
        Send CreateComObject of hoPrivKeyAttr
    End

    // Generate a session EC key.
    // A session key exists only for the duration of the PKS11 session.
    // To generate an EC key that resides on the HSM, set the "token" attribute equal to True
    Get ComUpdateBool Of hoPrivKeyAttr "token" False To iSuccess

    // Allow the private key to be used for signing.
    Get ComUpdateBool Of hoPrivKeyAttr "sign" True To iSuccess

    // Provide a JSON object to receive the public and private key handles.
    Get Create (RefClass(cComChilkatJsonObject)) To hoJsonHandles
    If (Not(IsComObjectCreated(hoJsonHandles))) Begin
        Send CreateComObject of hoJsonHandles
    End
    Set ComEmitCompact Of hoJsonHandles To False

    // Provide a Chilkat public key object to receive the public key.
    Get Create (RefClass(cComChilkatPublicKey)) To hoPubKey
    If (Not(IsComObjectCreated(hoPubKey))) Begin
        Send CreateComObject of hoPubKey
    End

    Get pvComObject of hoPubKeyAttr to vPubKeyAttr
    Get pvComObject of hoPrivKeyAttr to vPrivKeyAttr
    Get pvComObject of hoJsonHandles to vJsonHandles
    Get pvComObject of hoPubKey to vPubKey
    Get ComGenEcKey Of hoPkcs11 vPubKeyAttr vPrivKeyAttr vJsonHandles vPubKey To iSuccess
    If (iSuccess = False) Begin
        Get ComLastErrorText Of hoPkcs11 To sTemp1
        Showln sTemp1
        Showln "Failed to generate an EC key."
    End
    Else Begin
        // Sample JSON handles:
        // {
        //   "public_key_handle": 18415630,
        //   "private_key_handle": 74842125
        // }
        Get ComEmit Of hoJsonHandles To sTemp1
        Showln sTemp1
        Get ComUIntOf Of hoJsonHandles "public_key_handle" To iTemp1
        Showln "public_key_handle: " iTemp1
        Get ComUIntOf Of hoJsonHandles "private_key_handle" To iTemp1
        Showln "private_key_handle: " iTemp1
        Showln "public key JWK:"
        Get ComGetJwk Of hoPubKey To sTemp1
        Showln sTemp1
        // Sample JWK:
        // {"kty":"EC","crv":"P-256","x":"EDy-Sxl0DZ8tvzy_qnIYl6DYPFjTVnyJ2I9ZTCfKds4","y":"yBZ4HK2yF7F7ZEOn59CgTQp2ApQJ8ZOF736yZxY6LOE"}
        Showln "Success."
    End

    Get ComLogout Of hoPkcs11 To iSuccess
    Get ComCloseSession Of hoPkcs11 To iSuccess


End_Procedure