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Q: Does a digital signature algorithm exist which has a normal, a blind, an elliptic curve and an elliptic curve blind version?

I am searching for an algorithm where you can see what happens if you try to transfer it into a blinded or EC version.

There are some algorithms, which have two versions e.g. DSA and ECDSA but is there a single one which has three versions or even all four?

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  • $\begingroup$ what do you mean by "blind version" of signature algorithm? Blind signature is a special algorithm, which has specific "interface" and different constructions. $\endgroup$ – Mikhail Koipish Sep 25 at 9:52
  • $\begingroup$ Regarding elliptic-curve version - I'm sure almost all algorithms which are defined for general groups have EC version. It's just a matter of using EC group instantiation instead of general group. $\endgroup$ – Mikhail Koipish Sep 25 at 9:54
  • $\begingroup$ e.g. Schnorr blind signature, based on regular Schnorr signature. It has EC version of course (in both cases). But pay attention that Schnorr blind signature has a special interface: a first message "commitment" from signer is required. $\endgroup$ – Mikhail Koipish Sep 25 at 10:51
  • $\begingroup$ Sorry for answering that late... By blind version I mean a version of an algorithm, where you can see that it comes from a "base" version. Like Blind RSA comes from RSA because it has kind of the same principle. And yes I get what you mean. Basically you're just changing the groups but everything else could be done the same way. Thx for the Schnorr hint; I'll have a look at it. $\endgroup$ – sycx2 Sep 28 at 11:56
  • $\begingroup$ What are you hoping to do with such a family of cryptosystems if you have found one? $\endgroup$ – Squeamish Ossifrage Sep 28 at 18:22

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