Secure Multipurpose Internet Mail Extensions (S/MIME)

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Abbreviations / Acronyms / Synonyms:

S/MIME

NIST SP 800-113

Definitions:

A protocol defined in IETF RFCs 3850 through 3852 and 2634 for encrypting messages and creating certificates using public key cryptography. S/MIME is supported by default installations of many popular mail clients. S/MIME uses a classic, hierarchical design based on certificate authorities for its key management, making it suitable for medium to large implementations.
Sources:
NIST SP 800-45 Version 2

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