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@AprilF00lz@lemmy.ml to Privacy@lemmy.mlEnglish • 1 year ago

Downsides of Signal alternatives compared to Signal?

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Downsides of Signal alternatives compared to Signal?

@AprilF00lz@lemmy.ml to Privacy@lemmy.mlEnglish • 1 year ago
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I’m thinking of the things listed on the Privacy Guides real-time communication section

https://www.privacyguides.org/en/real-time-communication/

  • @ryannathans@aussie.zone
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    3•1 year ago

    master_key is never stored or sent to the SGX, only c2, the entropy bits. The user’s password is still required to generate the key.

    • @jet@hackertalks.com
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      1 year ago

      Brute forcing 4-6 digit pins is trivial.

      And even if the user set a actual password, it’s still very trivial

      https://blog.cryptographyengineering.com/2020/07/10/a-few-thoughts-about-signals-secure-value-recovery/

      • @ryannathans@aussie.zone
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        2•1 year ago

        “Very trivial” if they set a proper password? Yet the source you provide says it’s robustly secure

        • @jet@hackertalks.com
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          0•1 year ago

          I can’t find the phrase robustly secure in the last link:

          https://blog.cryptographyengineering.com/2020/07/10/a-few-thoughts-about-signals-secure-value-recovery/

          Signal asks users to set a pin/password which needs to be periodically reentered. This discourages people from using high entropy passwords like BIP38.

    • @Gooey0210@sh.itjust.works
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      3•1 year ago

      The password is literally a pin

      • @ryannathans@aussie.zone
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        3•1 year ago

        If you set a small pin, perhaps. Most people set a password

        • @Gooey0210@sh.itjust.works
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          2•1 year ago

          Pin is the suggested option, so I really doubt “most” of the people choose password

          • @ryannathans@aussie.zone
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            3•1 year ago

            Most people who care* I guess would be more apt

            • @jet@hackertalks.com
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              1•1 year ago

              For the people who really care, they can disable The pin. I believe the client will generate a BIP 38 password randomly, and use that for the data encrypted in the SVR. But all the data is still uploaded to the cloud. So if there’s a problem with the SVR encoding, the BIP 38 password generation etc the data is still exploited

              Not only do you have to care, everyone you talk to has to do the same thing, because if your counterparty has their key in the cloud, the conversation is at risk.

              • @ryannathans@aussie.zone
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                2•1 year ago

                Regardless, the master key is never uploaded

                • @jet@hackertalks.com
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                  1 year ago

                  All the bits to reconstruct the master key minus the pin code are uploaded. So it’s equivalent to uploading to the cloud The master key itself.

                  Very few people are using BIP 38 level passwords. So the vast majority of people have their key constructively uploaded fully in the cloud

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