About the elliptic curve used in SM2 about gmsm HOT 6 CLOSED

One of the SM2 standards should be y^2 = x ^3 +ax + b . That's what we are using in GMSM now.

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Thanks for reply.I'm so sorry that I just find there are only five parameters in your new p256.go, but without the parameter a in y2=X3+ax+b.And unfortunately,the parameter a should be -3 in the original elliptic pkg.According to the SM2 stabard,this parameter should be greater equal to 0(when the based field is Fp).

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Actually,maybe there is a need for new ScalarMult function in elliptic.go.

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actually we are using the same elliptic curve as national standard.

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Would you mind telling me the elliptic curve you have used in your sm2？Thank you anyway.

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same as y^2 = x ^3 +ax + b

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