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D.12.2.25 ellipticAdd
Procedure from library crypto.lib (see crypto_lib).
- Usage:
- ellipticAdd(N,a,b,P,Q);
- Return:
- list L, representing the point P+Q
- Note:
- P=(P[1]:P[2]:P[3]), Q=(Q[1]:Q[2]:Q[3]) points on the elliptic curve
defined by y^2z=x^3+a*xz^2+b*z^3 over Z/N
Example:
| LIB "crypto.lib";
bigint N=11;
bigint a=1;
bigint b=6;
list P,Q;
P[1]=2;
P[2]=4;
P[3]=1;
Q[1]=3;
Q[2]=5;
Q[3]=1;
ellipticAdd(N,a,b,P,Q);
==> [1]:
==> 7
==> [2]:
==> 2
==> [3]:
==> 1
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