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I don't know how to input a point at curve25519 using pbc.

If not, how can I calculate pairing points at curve25519?

Is there any other lib solving this?

p1gd0g
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  • What makes you think that Curve25519 can be used for pairing-based cryptography? You need a pairing-friendly curve which Curve25519 is not. Maybe it is possible, but it would be horribly slow. – Artjom B. Jul 25 '17 at 16:52
  • @ArtjomB. Thanks for your help. I modified the transaction protocol of Monero (a cryptocurrency) which uses curve25519 so I need to do this. – p1gd0g Jul 26 '17 at 03:52

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Curve25519 is not pairing-friendly.

There are two famous libraries about pairing: MIRACL and pbc.

p1gd0g
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