(DataFlex) RSA Sign using Base64 Private Key

Signs a string using a non-encrypted RSA private key in base64 encoding. Returns the RSA signature as a base64 string.

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

Use ChilkatAx-win32.pkg

Procedure Test
    Variant vPrivKey
    Handle hoPrivKey
    Boolean iSuccess
    Handle hoSbPem
    Handle hoRsa
    String sStrSigned
    String sStrOriginal
    String sTemp1

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

    Get Create (RefClass(cComChilkatPrivateKey)) To hoPrivKey
    If (Not(IsComObjectCreated(hoPrivKey))) Begin
        Send CreateComObject of hoPrivKey
    End

    Get Create (RefClass(cComChilkatStringBuilder)) To hoSbPem
    If (Not(IsComObjectCreated(hoSbPem))) Begin
        Send CreateComObject of hoSbPem
    End
    Get ComAppendLine Of hoSbPem "-----BEGIN RSA PRIVATE KEY-----" True To iSuccess
    Get ComAppendLine Of hoSbPem "MIIC .... j5A==" True To iSuccess
    Get ComAppendLine Of hoSbPem "-----END RSA PRIVATE KEY-----" True To iSuccess

    Get ComGetAsString Of hoSbPem To sTemp1
    Get ComLoadPem Of hoPrivKey sTemp1 To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoPrivKey To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Get Create (RefClass(cComChilkatRsa)) To hoRsa
    If (Not(IsComObjectCreated(hoRsa))) Begin
        Send CreateComObject of hoRsa
    End

    Get pvComObject of hoPrivKey to vPrivKey
    Get ComImportPrivateKeyObj Of hoRsa vPrivKey To iSuccess
    If (iSuccess <> True) Begin
        Get ComLastErrorText Of hoRsa To sTemp1
        Showln sTemp1
        Procedure_Return
    End

    Set ComEncodingMode Of hoRsa To "base64"
    Get ComOpenSslSignStringENC Of hoRsa "12345678" To sStrSigned
    Showln sStrSigned

    Get ComOpenSslVerifyStringENC Of hoRsa sStrSigned To sStrOriginal
    Showln sStrOriginal


End_Procedure