S/MIME Specification Elements
S/MIME Version 3
Message Specification
New Subtypes and Parameters
Encrypted-Only Format
That Uses Digital Envelope
“pkcs7-mime” Subtype
Signed-Only Format
That Uses Digital Signature
“pkcs7-mime” Subtype
Multipart-Signed Format
with “Detached” Signature
“pkcs7-signature” Subtype
Cryptographic Message Syntax
Encoded Binary Data
Enhanced Security Services
CMS Enveloped-Data Object
With Three Methods
Of Key Distribution
CMS Signed-Data Object
Triple Wrapping
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