我想使用未在Bouncy Castle中定义的椭圆曲线，但未能弄清楚如何。所讨论的曲线是altbn128曲线，具有以下参数：
"altBN128": {
"p": "30644e72e131a029b85045b68181585d97816a916871ca8d3c208c16d87cfd47",
"a": "00",
"b": "03",
"n": "30644e72e131a029b85045b68181585d2833e84879b9709143e1f593f0000001",
"h": "01",
"Gx": "01",
"Gy": "02"
}
谢谢！