Shamir Secret Sharing

Re:Shamir Secret Sharing by humblepie on Wednesday August 02, 2023 @07:05AM (#36969291)

Is there an alternative scheme that allows the different parties to enter their own password?

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Re:Shamir Secret Sharing by ecesena on Wednesday August 02, 2023 @07:33AM (#36969450)

Not with passwords of their choice.

You could use SSS in combination with BIP to derive a set of 12 or 24-word passphrases, this might be a bit more user friendly.

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Re:Shamir Secret Sharing by opendomain on Wednesday August 02, 2023 @09:20AM (#36970513)

can you give more information please?

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Re:Shamir Secret Sharing by pests on Wednesday August 02, 2023 @10:31AM (#36971427)

BIP39 is the Bitcoin standard which defines the process to generate the human readable "recovery phrase" for a Bitcoin wallet based on the private key. It's a list of 2048 pre-defiend words. Your private key is chunked into 11bit groups (with a few bits for a checksum) and then assigned the corresponding word.

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Re:Shamir Secret Sharing by dcow on Wednesday August 02, 2023 @11:05AM (#36971894)

It already exists: https://github.com/satoshilabs/slips/blob/master/slip-0039.m...

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Re:Shamir Secret Sharing by Tomte on Wednesday August 02, 2023 @07:26AM (#36969407)

Symmetrically encrypt their share with the chosen password.

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Re:Shamir Secret Sharing by cosmojg on Wednesday August 02, 2023 @10:39AM (#36971557)

You could just take the result of running their chosen passwords through the algorithm and use that as the decryption key.

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