mcarrickscott
commented
7 years ago Hello,
The point (x,y) must be on the curve, which has the equation y^2=x^3+Ax+B mod p, for some values of A and B that define the curve, and some modulus p.
A random pair (x,y) will almost certainly not be on the curve, and will be rejected (and the point set to Infinity).
If you specify only x, then the correct y can be calculated (half of the time) from the above equation.
If you could let us know the values of A, B, p and x and y, then we might be able to provide more help.
Mike
On Fri, Dec 30, 2016 at 11:22 AM, urbi001 notifications@github.com wrote:
Hi, I am new in C++. I am trying to call Ecn function (public) function given below, in Ecn.h using two Big points and when i am doing that I am getting infinity as answer public: ECn() {MR_INIT_ECN }
ECn(const Big &x,const Big& y) {MR_INIT_ECN epoint_set(x.getbig(),y.getbig(),0,p); }
. While I am trying to call the same Ecn function using only one point shown below as argument it is working. I need resolution to solve this issue.
ifndef MR_SUPPORT_COMPRESSION
ECn(const Big& x,int cb) {MR_INIT_ECN epoint_set(x.getbig(),x.getbig(),cb,p); }
endif
Let me know if you need any more information.
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Hi, I am new in C++. I am trying to call Ecn function (public) function given below, in Ecn.h using two Big points and when i am doing that I am getting infinity as answer public: ECn() {MR_INIT_ECN }
. While I am trying to call the same Ecn function using only one point shown below as argument it is working. I need resolution to solve this issue.
ifndef MR_SUPPORT_COMPRESSION
endif
Let me know if you need any more information.