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| author | J08nY | 2020-07-01 23:08:43 +0200 |
|---|---|---|
| committer | J08nY | 2020-07-01 23:09:30 +0200 |
| commit | 2aa191c63c556857ee22e801c19ee9822016f7cc (patch) | |
| tree | 8824b678714c71979c4f8579c9cf782a6fadcc5e /pyecsca/ec/efd/montgom | |
| parent | 3eaaed8ff2dfa36ad31884bc4cb0f45e0bf8f427 (diff) | |
| download | pyecsca-2aa191c63c556857ee22e801c19ee9822016f7cc.tar.gz pyecsca-2aa191c63c556857ee22e801c19ee9822016f7cc.tar.zst pyecsca-2aa191c63c556857ee22e801c19ee9822016f7cc.zip | |
Add random generation of points, speedup computation.
Diffstat (limited to 'pyecsca/ec/efd/montgom')
| -rw-r--r-- | pyecsca/ec/efd/montgom/coordinates | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pyecsca/ec/efd/montgom/coordinates b/pyecsca/ec/efd/montgom/coordinates index 0821ec6..d3b7f4e 100644 --- a/pyecsca/ec/efd/montgom/coordinates +++ b/pyecsca/ec/efd/montgom/coordinates @@ -4,6 +4,7 @@ parameter b coordinate x coordinate y satisfying b*y^2 == x^3 + a*x^2 + x +ysquared (x^3+a*x^2+x)/b addition x = b*(y2-y1)^2/(x2-x1)^2-a-x1-x2 addition y = (2*x1+x2+a)*(y2-y1)/(x2-x1)-b*(y2-y1)^3/(x2-x1)^3-y1 doubling x = b*(3*x1^2+2*a*x1+1)^2/(2*b*y1)^2-a-x1-x1 |