ECC算法推荐参数-256k1和256r1）

ECC推荐参数：256k1
p=FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEFFFFFC2F
a=0000000000000000000000000000000000000000000000000000000000000000
b=0000000000000000000000000000000000000000000000000000000000000007
G=79BE667EF9DCBBAC55A06295CE870B07029BFCDB2DCE28D959F2815B16F81798
483ADA7726A3C4655DA4FBFC0E1108A8FD17B448A68554199C47D08FFB10D4B8
n=FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141

ECC推荐参数：256r1
p=FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFF
a=FFFFFFFF00000001000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFC
b=5AC635D8AA3A93E7B3EBBD55769886BC651D06B0CC53B0F63BCE3C3E27D2604B
G=6B17D1F2E12C4247F8BCE6E563A440F277037D812DEB33A0F4A13945D898C296
4FE342E2FE1A7F9B8EE7EB4A7C0F9E162BCE33576B315ECECBB6406837BF51F5
n=FFFFFFFF00000000FFFFFFFFFFFFFFFFBCE6FAADA7179E84F3B9CAC2FC632551
 

secp256r1:

public class SecP256r1 {
	
	private final static byte[] p = { (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, 0x00, 0x00,
		0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte) 0xff,
		(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
		(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff };

	private final static byte[] a = { (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, 0x00, 0x00,
		0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, (byte) 0xff,
		(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
		(byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xfc 
	};

	private final static byte[] b = { 0x5a, (byte) 0xc6, 0x35, (byte) 0xd8, (byte) 0xaa, 0x3a,
		(byte) 0x93, (byte) 0xe7, (byte) 0xb3, (byte) 0xeb, (byte) 0xbd, 0x55, 0x76, (byte) 0x98,
		(byte) 0x86, (byte) 0xbc, 0x65, 0x1d, 0x06, (byte) 0xb0, (byte) 0xcc, 0x53, (byte) 0xb0,
		(byte) 0xf6, 0x3b, (byte) 0xce, 0x3c, 0x3e, 0x27, (byte) 0xd2, 0x60, 0x4b };

	private final static byte[] G = { 0x04, 0x6b, 0x17, (byte) 0xd1, (byte) 0xf2, (byte) 0xe1, 0x2c,
		0x42, 0x47, (byte) 0xf8, (byte) 0xbc, (byte) 0xe6, (byte) 0xe5, 0x63, (byte) 0xa4, 0x40,
		(byte) 0xf2, 0x77, 0x03, 0x7d, (byte) 0x81, 0x2d, (byte) 0xeb, 0x33, (byte) 0xa0, (byte) 0xf4,
		(byte) 0xa1, 0x39, 0x45, (byte) 0xd8, (byte) 0x98, (byte) 0xc2, (byte) 0x96, 0x4f, (byte) 0xe3,
		0x42, (byte) 0xe2, (byte) 0xfe, 0x1a, 0x7f, (byte) 0x9b, (byte) 0x8e, (byte) 0xe7, (byte) 0xeb,
		0x4a, 0x7c, 0x0f, (byte) 0x9e, 0x16, 0x2b, (byte) 0xce, 0x33, 0x57, 0x6b, 0x31, 0x5e,
		(byte) 0xce, (byte) 0xcb, (byte) 0xb6, 0x40, 0x68, 0x37, (byte) 0xbf, 0x51, (byte) 0xf5 };

	private final static byte[] r = { (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, 0x00, 0x00, 0x00,
		0x00, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff, (byte) 0xff,
		(byte) 0xff, (byte) 0xbc, (byte) 0xe6, (byte) 0xfa, (byte) 0xad, (byte) 0xa7, 0x17, (byte) 0x9e,
		(byte) 0x84, (byte) 0xf3, (byte) 0xb9, (byte) 0xca, (byte) 0xc2, (byte) 0xfc, 0x63, 0x25, 0x51 };

	static public KeyPair newKeyPair() {
		KeyPair key = new KeyPair(KeyPair.ALG_EC_FP, (short) 256);

		ECPrivateKey privKey = (ECPrivateKey) key.getPrivate();
		ECPublicKey pubKey = (ECPublicKey) key.getPublic();

		privKey.setFieldFP(p, (short) 0, (short) p.length);
		privKey.setA(a, (short) 0, (short) a.length);
		privKey.setB(b, (short) 0, (short) b.length);
		privKey.setG(G, (short) 0, (short) G.length);
		privKey.setR(r, (short) 0, (short) r.length);

		pubKey.setFieldFP(p, (short) 0, (short) p.length);
		pubKey.setA(a, (short) 0, (short) a.length);
		pubKey.setB(b, (short) 0, (short) b.length);
		pubKey.setG(G, (short) 0, (short) G.length);
		pubKey.setR(r, (short) 0, (short) r.length);

		return key;
	}
}