The Charter contains this clause:
- Everyone has the right to be secure against unreasonable search or seizure.
Which is what is applicable to privacy. This right, as with all rights in the Charter, is subject to "reasonable limits prescribed by law as can be demonstrably justified in a free and democratic society". Mandating digital service companies to keep tabs on everyone they serve in Canada, just in case it's needed to investigate a crime later, seems like an uphill battle for the Government to justify in court, if that is what you were asking for.