BADA55 curve from the https://bada55.cr.yp.to/bada55-20150927.pdf

Parameters

Characteristics

• Seed:
  0xca9ebd338a9ee0e6862fd329062abc06a793575a1c744f0ec24503a525f5d06e

SAGE

p = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff
K = GF(p)
a = K(0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffc)
b = K(0xbada55ec3be2ad1f9eeea5881ecf95bbf3ac392526f01d4cd13e684c63a17cc4d5f271642ad83899113817a61006413d)
E = EllipticCurve(K, (a, b))
# No generator defined
E.set_order(0xfffffffffffffffffffffffffffffffffffffffffffffffeefe1169b82ff7e5032c683f766fae57359cfc5fc25ffce37 * 0x01)

PARI/GP

p = 0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff
a = Mod(0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffc, p)
b = Mod(0xbada55ec3be2ad1f9eeea5881ecf95bbf3ac392526f01d4cd13e684c63a17cc4d5f271642ad83899113817a61006413d, p)
E = ellinit([a, b])
E[16][1] = 0xfffffffffffffffffffffffffffffffffffffffffffffffeefe1169b82ff7e5032c683f766fae57359cfc5fc25ffce37 * 0x01
\\ No generator defined

JSON

{
  "name": "BADA55-VR-384",
  "desc": "BADA55 curve from the https://bada55.cr.yp.to/bada55-20150927.pdf",
  "form": "Weierstrass",
  "field": {
    "type": "Prime",
    "p": "0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000ffffffff",
    "bits": 384
  },
  "params": {
    "a": {
      "raw": "0xfffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffeffffffff0000000000000000fffffffc"
    },
    "b": {
      "raw": "0xbada55ec3be2ad1f9eeea5881ecf95bbf3ac392526f01d4cd13e684c63a17cc4d5f271642ad83899113817a61006413d"
    }
  },
  "order": "0xfffffffffffffffffffffffffffffffffffffffffffffffeefe1169b82ff7e5032c683f766fae57359cfc5fc25ffce37",
  "cofactor": "0x01",
  "characteristics": {
    "seed": "0xca9ebd338a9ee0e6862fd329062abc06a793575a1c744f0ec24503a525f5d06e"
  }
}