A que corresponde a seguinte informação? (escolha a opção mais correta)

MIME-Version: 1.0
Content-Type: multipart/signed; protocol="application/x-pkcs7-signature"; micalg="sha-256"; boundary="----F46C4B7E272BA661D77AA4FF41655372"

This is an S/MIME signed message

------F46C4B7E272BA661D77AA4FF41655372
Este é o meu email secreto que eu pretendo assinar digitalmente!

------F46C4B7E272BA661D77AA4FF41655372
Content-Type: application/x-pkcs7-signature; name="smime.p7s"
Content-Transfer-Encoding: base64
Content-Disposition: attachment; filename="smime.p7s"
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------F46C4B7E272BA661D77AA4FF41655372--