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Encrypted Emails

Discussion in 'Software' started by Early riser, 29 Oct 2020.

  1. Early riser

    Early riser

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    Got 3 emails from Tesco today and 2 of them, the important ones are encrypted. Can anyone tell me how to open them please? 392D53C5-9D8F-435E-97E1-70370EF5A01E.jpeg
     
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  3. just pumps

    just pumps

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    Are you certain of the source?
     
  4. Early riser

    Early riser

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    Yes. I was speaking to the agent when she sent them. She then sent them to herself and they arrived without encryption.
     
  5. rossj81

    rossj81

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    TLS is a transport layer encryption, which means that it encodes emails as they travel over the internet. TLS doesn't keep the emails encrypted once they arrive. That icon just means that the email was transmitted securely.

    What are you trying to do that's not working?

    What email software are you using (outlook, Gmail, etc.)?

    Is there an attachment that you can't open? (If so, upload a screenshot of the attachment icon and filename.)

    Does the email body appear garbled? (If so, upload a screenshot of the body but erase any personal details that are visible.)
     
  6. Early riser

    Early riser

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    There is nothing I can do since there are nothing on the email to invite me to open and so on.

    gmail

    No. The only information is that shown on the image in my opening post.

    Not sure what you mean by email body but there is nothing that I can describe as garbled.
     
  7. mattylad

    mattylad

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    Did the emails contain large attachments?
    Gmail may have filtered them out due to size or type of attachment if so.

    Get them to resend them.
     
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  8. Early riser

    Early riser

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    I did and they’re still encrypted.
     
  9. mattylad

    mattylad

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  11. rossj81

    rossj81

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    This article shows how to enforce TLS encryption, but OP shows that the email is already encrypted with TLS.

    @Early riser Gmail natively supports TLS encryption (example below), so I don't believe this is why you can't view the emails.
    Example Gmail message with TLS.png

    After opening the email in Gmail, click the three dots in the top right, and select "Download message".
    Dots menu.png

    Once downloaded, right-click the file, view properties, and have a look at the size.
    File properties.png

    How big is the file? If it's less than 5 KB, Tesco have sent you an email header without any content. You can't view it because there is nothing there to see. An email with content would be at least 20 KB, and if you were expecting an attachment, it would be above 300 KB.
     
  12. mattylad

    mattylad

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    Yet if the OP is getting TLS encypted emails then it does help.
    Read it further.
    There is also a drop down that has:
    upload_2020-11-1_16-25-34.png

    So IF this is TLS encrypted email then the OP should not be seeing it at all.
    In which case, has the OP already enabled TLS compliance at some point? or is the sender requiring TLS compliance?
    Does enabling it on the OP's account make it so the OP can see the emails?
     
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  13. rossj81

    rossj81

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    The part about configuring TLS only applies to business and organisational accounts. Typical end-user Gmail accounts have TLS configured automatically, and can neither enable nor disable it.

    Businesses and organisations need to sign TLS using their own certs. Gmail signs end-user TLS using Google's certs.

    I think the whole TLS thing is a red herring, and Tesco's systems have sent malformed emails (albeit correctly signed).
     
    Last edited: 1 Nov 2020
  14. Early riser

    Early riser

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    I don’t have download message! 7548E5EA-7C81-44C2-8BFF-9AFABF8ED010.jpeg
     
  15. Early riser

    Early riser

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    ??
     
  16. Early riser

    Early riser

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    Thanks for the input guys but I guess that this is just beyond my understanding. Will have to call into tesco store when things are more relaxed and will use my old phone meantime.
     
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