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Difference between Signed and Encrypted E-mail RRS feed

  • Question

  • Hi All,

           Can someone make me understand what is the difference between signed and encrypted e-mail.  And when are they used?  Thanks in advance.

    Monday, April 11, 2011 1:15 PM

Answers

  • Hi,

     

     

    As I understand, the most difference is the encryption.

    1. Encrypt e-mail message

     Only the recipient who has the  private key that matches the public key used to encrypt the message can decipher the message for reading.

    private key: The secret key kept on the sender's computer that the sender uses to digitally sign messages to recipients and to decrypt (unlock) messages from recipients.

     public key: The key a sender gives to a recipient so that the recipient can verify the sender's signature and confirm that the message was not altered. Recipients also use the public key to encrypt (lock) e-mail messages to the sender.

    More information about “ how to encrypt outgoing e-mail”

    http://office.microsoft.com/en-us/outlook-help/encrypt-e-mail-messages-HP001230536.aspx

     

     

    2. Digitally signing a message

    Digital signature include your certificate and public key.

    Certificate: A digital means of proving your identity. When you send a digitally signed message you are sending your certificate and public key. Certificates are issued by a certification authority, and like a driver's license, can expire or be revoked.

    More information about “Digitally sign outgoing e-mail”

    http://office.microsoft.com/en-us/outlook-help/secure-messages-with-a-digital-signature-HP001230539.aspx?CTT=5&origin=HP001230536
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    • Marked as answer by Jerome Xiong Sunday, April 24, 2011 7:20 AM
    Wednesday, April 13, 2011 2:11 AM

All replies

  • Here's a nice article about it:

    http://www.productivity501.com/digital-signatures-encryption/4710/


    Outlook Web Access For PDA , OWA For WAP
    www.owa-pda.com
    email a@t leederbyshire d.0.t c.0.m
    Monday, April 11, 2011 1:55 PM
  • Hi,

     

     

    As I understand, the most difference is the encryption.

    1. Encrypt e-mail message

     Only the recipient who has the  private key that matches the public key used to encrypt the message can decipher the message for reading.

    private key: The secret key kept on the sender's computer that the sender uses to digitally sign messages to recipients and to decrypt (unlock) messages from recipients.

     public key: The key a sender gives to a recipient so that the recipient can verify the sender's signature and confirm that the message was not altered. Recipients also use the public key to encrypt (lock) e-mail messages to the sender.

    More information about “ how to encrypt outgoing e-mail”

    http://office.microsoft.com/en-us/outlook-help/encrypt-e-mail-messages-HP001230536.aspx

     

     

    2. Digitally signing a message

    Digital signature include your certificate and public key.

    Certificate: A digital means of proving your identity. When you send a digitally signed message you are sending your certificate and public key. Certificates are issued by a certification authority, and like a driver's license, can expire or be revoked.

    More information about “Digitally sign outgoing e-mail”

    http://office.microsoft.com/en-us/outlook-help/secure-messages-with-a-digital-signature-HP001230539.aspx?CTT=5&origin=HP001230536
    Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.
    • Marked as answer by Jerome Xiong Sunday, April 24, 2011 7:20 AM
    Wednesday, April 13, 2011 2:11 AM