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How would you find the Blinding factor $R$ in RSA blind signature algorithm when having – for example – $p=11$, $q=3$, message $m=6$, and public key $pk=7$?

The answer doesn’t have to use the numbers in the example. I’m just trying to understand how to find the blinding factor $R$ having any numbers.

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  • $\begingroup$ A common form of RSA blinding is well explained in this answer. $\endgroup$
    – fgrieu ♦
    Commented Oct 6, 2016 at 6:17

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You don't “find” the blinding factor. It is picked randomly before starting the computation. The whole point of blinding is to use a random value in the computation and to perform the computation in such a way that this random value affects intermediate values but not the final result.

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