'how to add digital signature to hash data in node js use .cer file?

I'm new to digital signatures and how to use them, so I can't complete my task.

  • Sign the hash with the CADES-BES signature.

  • Insert a new element with a Base64 encoded CADES-BES signature into the original document XML or JSON.

I want to add a signature to hash data using a CADES-BES signature and I have a public key.

Please, any help

node.jsarraysbase64digital-signaturecanonical-link


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