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Presentation on theme: "(free certificate not available)"— Presentation transcript:

1 www.hitrust.com.tw (free certificate not available)

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8 Find other certificate in certificate directory

9 Homework: certificate
Get your free certificate Send a signed and to me

10 S/MIME (Secure/Multipurpose Internet Mail Extension)
S/MIME: RFC 2630, 2632, 2633 S/MIME header delimiter

11 S/MIME signature 6-bit block to 8-bit ASCII code
Provide reliable delivery across different environment

12 Signature In SignedData format, including SignerInfo
The signer’s public-key certificate Identifier of the message digest algorithm Identifier of the algorithm used to encrypt the message digest The encrypted message digest (signature)

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