Encryption and Decryption

Encryption

While saving workbooks, Essential XlsIO lets you encrypt an XLS workbook content with a password. The workbook can be opened and decrypted by MS Excel only when the user provides the right password.

Essential XlsIO also lets you specify a password for letting the user modify contents of a workbook using MS Excel. If the user does not provide this password, the workbook becomes read only.

Decryption

While reading existing XLS workbooks, Essential XlsIO lets you specify a password to decrypt an encrypted workbook. If the workbook is protected from being modified, you can also specify a password to unprotect and modify it.

You can also specify a password to make the document writable.