When logging in to my outlook email, the status bar on my pc shows mbi_ssl_SHARED...             at the end of it's line.

 

Should it show SHARED??? and what does this mean???

 

This is just a personal email address for me only without access to anyone else.

I have tried searching the information without success.

 

Cheers .

SSL is the encryption between you and Microsoft (Secure Sockets Layer)

To work it needs to share a certificate. The certificate contains the key needed to protect your data and still be read by Microsoft.

If you want to tax your brain for an hour or three research asymmetrical encryption and public key cryptography.

 

TLDR it's fine.

5 hours ago, Aspman said:

To work it needs to share a certificate.

 

TLDR it's fine.

 

Hi Aspman, and thanks for advice.

 

Is sharing a certificate what the SHARED means then?...................Rather than shared or user???............Not literally anyone else sharing my email account?

 

Forgive my ignorance - TLDR????

Can you post a screenshot please

On 6/9/2017 at 19:16, Dr Zoidberg said:

Can you post a screenshot please

 

I haven't the first clue how to do this Dr. I will try and look into it though. Cheers.

@Tilt - Open Outlook and get the message you're talking about displayed. Now hold the Shift key and press PrintScreen (PrtScn), then start a graphics program, Paint will be fine, and paste into it. Save that file, a Jpeg would be good, and put it into your photohosting account.

On 09/06/2017 at 19:11, Tilt said:

 

Hi Aspman, and thanks for advice.

 

Is sharing a certificate what the SHARED means then?...................Rather than shared or user???............Not literally anyone else sharing my email account?

 

Forgive my ignorance - TLDR????

 

TLDR = Too Long didn't read  (aka Skip to the end)

 

Ok here goes.

 

Asymmetrical encryption. The encryption used in websites is normally asymmetrical because this is the most scalable and flexible way to protect information between large number of visitors.

 

Asymmetrical encryption uses two different but related keys to protect your information, a private key and a public key.

 

The Private key can only do two things. It can create a public key and it can decrypt anything protected by the public key.

Because it decrypts it makes the private key something that is important to protect and keep secret, hence 'private'.

 

The public key is created from the private key. the public key can only do one thing, encrypt. That means you can only lock things away with the public key but not open them. It's a one way deal. Because it can only do this one thing it's safe to release the public key to anyone that wants it.

 

A certificate which is shared from a website (or email server) is two things put together. The public key and some data which proves the origin of the public key (non-repudiation guaranteed by a 3rd party certificate authority or CA). The certificate is shared with anyone that needs to send information.

 

What happens in reality is a lot more complicated (and a lot more complicated still  than the next 5 paragraphs).

 

1. When you initiate a secure connection with a website or email service first of all the site sends you its certificate (nonrepudiation data and public key).
    
2. When your PC (or tablet or phone) gets this it uses the public key to encrypt a master secret key and sends this back to the site.
    
3. The site uses it's private key to decrypt the master secret key.
    
4. The site then uses the master secret key to protect information going between your computer and the site (now doing  symmetrical encryption since you're both using the same master secret key).
    
5. When your transaction is done the connection is broken and the master secret key is destroyed.

 

So the msi_shared message related to the initial communication between your PC and mail server when the certificate is shared.