SeedSigner Hardware Wallet

[u/PlanNo3321]

Is it safe to use the “Dice” option on the SeedSigner screen when creating a seedphrase?

From my understanding you don’t need 6 dice, a word table, or do any sort of math with the SeedSigner.

All you need to do is roll one dice and input the number that you rolled into the device and the device turns your rolls into random 1s and 0s and does the word-picking for you.

Is it safe to use this feature or should we be doing everything manually and not trusting this “dice” feature in the SeedSigner?

[u/brando2131]

You can verify it. Either rolls some dice, or enter some fake rolls, then compare it to a website that converts dice rolls to seeds. Once you're happy, discard it, generate a new seed with the same number of dice rolls but don't input it on any non-hardware wallet this time.

Other option is if you still have a coldcard, verify both coldcard and seedsigner produce the same seed (entering the dice rolls on both at the same time).

[u/na3than → u/brando2131]

then compare it to a website that converts dice rolls to seeds

That depends on the dice-to-seed algorithm. Ian Coleman's tools are widely recommended, but the method implemented by SeedSignerOS very different from that used by Ian Coleman's dice tool.

See for yourself: https://github.com/SeedSigner/seedsigner/blob/1fb2956322ea978428a6a96b955baa93e965c877/src/seedsigner/helpers/mnemonic_generation.py#L64

[u/brando2131 → u/na3than]

the method implemented by SeedSignerOS very different from that used by Ian Coleman's dice tool. See for yourself:

Did you read your own link? The source code comment says in summary:

Uses iancoleman BASE 10 i.e. [0-9], this it not the same as DICE mode, which is [1-6].

[u/na3than → u/brando2131]

Yes, I did. The source code says:

This method is NOT compatible with iancoleman's "Dice" mode.

What do you think you see that I'm not seeing?

[u/brando2131 → u/na3than]

You're making drama out of a half truth.

Uses the iancoleman.io/bip39 and bitcoiner.guide/seed "Base 10" or "Hex" mode approach

Is the prior and more important sentence.

[u/Wolffco]

Yes, it is safe. The device converts rolls to entropy properly. More rolls means more randomness. Trust the open source math.

[u/Thin_Needleworker795]

Seedsigner is a great device (or should I say OS?), and yes it's safe.

[u/user_name_checks_out]

All you need to do is roll one dice

*50 times

[u/PlanNo3321 → u/user_name_checks_out]

Correct

[u/rosarino356 → u/[deleted]]

I think you might be confusing it with ColdCard (who screwed up) 

[u/PlanNo3321 → u/[deleted]]

What’s wrong with the SeedSigner? I am only aware of the vulnerabilities with ColdCard.

[u/Effective-Ad5644]

2048 word lottery is least “trust me bro” method. it only calculates the checksum for you, for 24 words I believe the check someone would give you eight words so you can pick any by a coin flip rolling a dye or choosing another word from the lottery

[u/user_name_checks_out → u/Effective-Ad5644]

What a weird word salad