Windows Live Mail and encrypting of mail messages. Cipher strength.
I have a email certificate. When I tried to send encrypting email, I saw a warning that the message can be encrypted only with 40-bit cipher strength, while in settings of my account the algorithm is 3DES(168 bit). I allowed it(for testing purposes) and now I haven't got any warnings. Why? What actually cipher strength? 40-bit??? Where is in windows settings(may be in registry?) or in Windows Live Mail settings I can set up the strength of the encrypting algorithm? And also how can I see with what cipher strength a email was actually encrypted?
January 2nd, 2012 8:30am

If you want to encrypt your e-mail, it is best not to use an e-mailing client. I would suggest you use openSSL to encrypt using AES keys. Make a private key, then generate a public key off the private key. Give the person you are sending the message to the public key through a secure VPN tunnel, a thumb-drive, or any other way that avoids direct contact to the unsecure internet. (does not include facebook or other email). I would suggest thumbdrive, it is always the safest way ( if the thumbdrive is yours ) to pass information. Then encrypt your email messages with the private key before sending them to your friend with the public key. Your friend can then unencrypt the file using the public key. If you are looking for a secure method to save all emails with encryption, I'm sorry, it doesn't exist. Nothing is safe on the internet. But if you want it to be more secure, then you should buy service from a well known email security system. Also, for the generation of the AES keys, I would suggest AES-512. Email's are small so encryption and decryption won't take a lot of time. Good luck! Freddie Rice
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January 2nd, 2012 8:38pm

Thank you for answer. I know about what you speak. But I want to know why this happens in Windows Live Mail and what is the strongest key length that can be used for symmetric algorithms in it.
January 4th, 2012 1:15am

Hi, After you allow the warning, the computer will remember your configuration and no longer prompt for the same warning. If you want to know where the setting is, it is Windows Live Mail related, I recommend to post in Windows Live Mail. http://windowslivehelp.com/forums.aspx?forumid=df04ff8d-44a2-41d2-bca1-dc015525e81c Niki Han TechNet Community Support
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January 4th, 2012 4:15am

Hi, After you allow the warning, the computer will remember your configuration and no longer prompt for the same warning. If you want to know where the setting is, it is Windows Live Mail related, I recommend to post in Windows Live Mail. http://windowslivehelp.com/forums.aspx?forumid=df04ff8d-44a2-41d2-bca1-dc015525e81c Niki Han TechNet Community Support
January 4th, 2012 12:14pm

Hi, After you allow the warning, the computer will remember your configuration and no longer prompt for the same warning. If you want to know where the setting is, it is Windows Live Mail related, I recommend to post in Windows Live Mail. I created 2 topics on http://windowslivehelp.com 1. http://windowslivehelp.com/thread.aspx?postid=aa8587b8-ba21-4502-be3e-eba2f5adf9c2&iuc=1#aa8587b8-ba21-4502-be3e-eba2f5adf9c2 2. http://windowslivehelp.com/thread.aspx?postid=70c12d73-eb42-46aa-a492-4a60b713deb5&iuc=1&wa=wsignin1.0#70c12d73-eb42-46aa-a492-4a60b713deb5 There are no answers.
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January 21st, 2012 8:35pm

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