org.bouncycastle.asn1.nist.NISTNamedCurves Java Examples

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Example #1
Source File: Sign1MessageTest.java    From COSE-JAVA with BSD 3-Clause "New" or "Revised" License 5 votes vote down vote up 
@BeforeClass
public static void setUpClass() throws CoseException {

    X9ECParameters p = NISTNamedCurves.getByName("P-256");
    
    ECDomainParameters parameters = new ECDomainParameters(p.getCurve(), p.getG(), p.getN(), p.getH());
    ECKeyPairGenerator pGen = new ECKeyPairGenerator();
    ECKeyGenerationParameters genParam = new ECKeyGenerationParameters(parameters, null);
    pGen.init(genParam);
    
    AsymmetricCipherKeyPair p1 = pGen.generateKeyPair();
    
    keyPublic = (ECPublicKeyParameters) p1.getPublic();
    keyPrivate = (ECPrivateKeyParameters) p1.getPrivate();
    
byte[] rgbX = keyPublic.getQ().normalize().getXCoord().getEncoded();
byte[] rgbY = keyPublic.getQ().normalize().getYCoord().getEncoded();
boolean signY = true;
byte[] rgbD = keyPrivate.getD().toByteArray();

CBORObject key = CBORObject.NewMap();
    key.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2);
    key.Add(KeyKeys.EC2_Curve.AsCBOR(), KeyKeys.EC2_P256);
    key.Add(KeyKeys.EC2_X.AsCBOR(), rgbX);
    key.Add(KeyKeys.EC2_Y.AsCBOR(), rgbY);
    cnKeyPublic = new OneKey(key);
    
    key = CBORObject.NewMap();
    key.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2);
    key.Add(KeyKeys.EC2_Curve.AsCBOR(), KeyKeys.EC2_P256);
    key.Add(KeyKeys.EC2_X.AsCBOR(), rgbX);
    key.Add(KeyKeys.EC2_Y.AsCBOR(), rgbY);
    cnKeyPublicCompressed = new OneKey(key);

    key = CBORObject.NewMap();
    key.Add(KeyKeys.KeyType.AsCBOR(), KeyKeys.KeyType_EC2);
    key.Add(KeyKeys.EC2_Curve.AsCBOR(), KeyKeys.EC2_P256);
    key.Add(KeyKeys.EC2_D.AsCBOR(), rgbD);
    cnKeyPrivate = new OneKey(key);
}