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S/MIME
S/MIME stands for Secure/Multipurpose Internet Mail Extensions, and it is a cryptographic protocol that enhances the security of business emails through encryption and digital signatures. It allows users to encrypt emails and digitally sign them to verify the sender’s identity.
Advantages of S/MIME
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Verification: Confirms the sender’s identity.
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Confidentiality: Protects the content from unauthorized access.
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Integrity: Ensures the message has not been altered.
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Secure Data Transfer: Safely transmits files like images, audio, videos, and documents.
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Non-repudiation: Prevents the sender from denying the origin of the message.
How S/MIME Works
S/MIME enables the transmission of non-ASCII data via the Secure Mail Transfer Protocol (SMTP). It securely sends various data files, including music, video, and images, using encryption. Data encrypted with a public key can only be decrypted by the recipient’s private key, ensuring secure end-to-end communication.