Timeline for In a shamir secret sharing scheme, why can't the secret be a middle coefficient and only the first or the last?
Current License: CC BY-SA 4.0
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| Dec 21, 2019 at 9:49 | comment | added | ackbar03 | Thanks very much for this. It seems this is much more complicated than what i was expecting, I'll have to digest it a bit. I thought at first the approach would be to show that by writing in the form of matrices, $Xa = y-a_0$, where a is the coefficient vector, we just need to show the inverse $X^{-1} (y-a_0)$ will not lead to a case where the a_0 cancels out for the first and last row, and there's some obscure theorem out there related to this. I guess thats a bit of an oversimplification however. thanks again for taking the time to expand on something you answered six years ago! | |
| Dec 21, 2019 at 9:38 | vote | accept | ackbar03 | ||
| Dec 16, 2019 at 20:42 | history | edited | poncho | CC BY-SA 4.0 |
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| Dec 16, 2019 at 20:10 | history | edited | poncho | CC BY-SA 4.0 |
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| Dec 16, 2019 at 18:09 | history | edited | poncho | CC BY-SA 4.0 |
Corrected math
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| Dec 16, 2019 at 18:02 | history | edited | poncho | CC BY-SA 4.0 |
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| Dec 16, 2019 at 17:51 | history | answered | poncho | CC BY-SA 4.0 |