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Diffstat (limited to 'pyecsca/ec/efd/edwards')
| -rw-r--r-- | pyecsca/ec/efd/edwards/coordinates | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/pyecsca/ec/efd/edwards/coordinates b/pyecsca/ec/efd/edwards/coordinates index dc85a7a..f70f3c8 100644 --- a/pyecsca/ec/efd/edwards/coordinates +++ b/pyecsca/ec/efd/edwards/coordinates @@ -4,6 +4,7 @@ parameter d coordinate x coordinate y satisfying x^2+y^2 == c^2*(1+d*x^2*y^2) +ysquared (x^2-c^2)/(c^2*d*x^2-1) addition x = (x1*y2+y1*x2)/(c(1+d*x1*x2*y1*y2)) addition y = (y1*y2-x1*x2)/(c(1-d*x1*x2*y1*y2)) doubling x = (x1*y1+y1*x1)/(c(1+d*x1*x1*y1*y1)) |