Encryption to BCC recipients with S/MIME

摘要: Encrypted email message structures can contain recipient information that reveal, to any recipient, all of the other recipients an message. Because some recipients, such as whom was “blind carbon-copied”, should remain hidden from individual encrypted messages be created. One created for who are intended revealed, listed in TO and CC fields header. A second hidden, BCC field Alternatively, multiple individually each field, if even recipients.