Verify Password of Encrypted Files with JavaScript via C++

Verify the password of the encrypted file

To verify the password of the encrypted file, Aspose.Cells for JavaScript via C++ provides the FileFormatUtil.verifyPassword(Uint8Array, string) method. This method accepts two parameters, the file stream and the password that needs to be verified.
The following code snippet demonstrates the use of the FileFormatUtil.verifyPassword(Uint8Array, string) method to verify whether the provided password is valid or not.

<!DOCTYPE html>
<html>
    <head>
        <title>Aspose.Cells Example</title>
    </head>
    <body>
        <h1>Verify Excel Password Example</h1>
        <input type="file" id="fileInput" accept=".xls,.xlsx,.csv" />
        <button id="runExample">Verify Password</button>
        <a id="downloadLink" style="display: none;">Download Result</a>
        <div id="result"></div>
    </body>

    <script src="aspose.cells.js.min.js"></script>
    <script type="text/javascript">
        const { Workbook, SaveFormat, FileFormatUtil, Utils } = AsposeCells;
        
        AsposeCells.onReady({
            license: "/lic/aspose.cells.enc",
            fontPath: "/fonts/",
            fontList: [
                "arial.ttf",
                "NotoSansSC-Regular.ttf"
            ]
        }).then(() => {
            console.log("Aspose.Cells initialized");
        });

        document.getElementById('runExample').addEventListener('click', async () => {
            const fileInput = document.getElementById('fileInput');
            if (!fileInput.files.length) {
                document.getElementById('result').innerHTML = '<p style="color: red;">Please select an Excel file.</p>';
                return;
            }

            const file = fileInput.files[0];
            const arrayBuffer = await file.arrayBuffer();
            const bytes = new Uint8Array(arrayBuffer);

            const isPasswordValid = FileFormatUtil.verifyPassword(bytes, "1234");

            document.getElementById('result').innerHTML = '<p>Password is Valid: ' + isPasswordValid + '</p>';
        });
    </script>
</html>
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