Example usage for org.bouncycastle.jcajce.provider.asymmetric.ec BCECPublicKey getEncoded

Introduction

In this page you can find the example usage for org.bouncycastle.jcajce.provider.asymmetric.ec BCECPublicKey getEncoded.

Prototype

public byte[] getEncoded() 

Source Link

Usage

From source file:dorkbox.util.crypto.EccTest.java

License:Apache License

@Test
public void EccJceSerialization() throws IOException {
    AsymmetricCipherKeyPair generateKeyPair = CryptoECC.generateKeyPair(CryptoECC.default_curve,
            new SecureRandom());
    ECPrivateKeyParameters privateKey = (ECPrivateKeyParameters) generateKeyPair.getPrivate();
    ECPublicKeyParameters publicKey = (ECPublicKeyParameters) generateKeyPair.getPublic();

    BCECPublicKey bcecPublicKey = new BCECPublicKey("EC", publicKey, (ECParameterSpec) null,
            BouncyCastleProvider.CONFIGURATION);
    byte[] publicBytes = bcecPublicKey.getEncoded();

    // relies on the BC public key.
    BCECPrivateKey bcecPrivateKey = new BCECPrivateKey("EC", privateKey, bcecPublicKey, (ECParameterSpec) null,
            BouncyCastleProvider.CONFIGURATION);
    byte[] privateBytes = bcecPrivateKey.getEncoded();

    ECPublicKeyParameters publicKey2 = (ECPublicKeyParameters) PublicKeyFactory.createKey(publicBytes);
    ECPrivateKeyParameters privateKey2 = (ECPrivateKeyParameters) PrivateKeyFactory.createKey(privateBytes);

    // test via signing
    byte[] bytes = "hello, my name is inigo montoya".getBytes();

    BigInteger[] signature = CryptoECC.generateSignature("SHA384", privateKey,
            new SecureRandom(entropySeed.getBytes()), bytes);

    boolean verify1 = CryptoECC.verifySignature("SHA384", publicKey, bytes, signature);

    if (!verify1) {
        fail("failed signature verification");
    }//w  ww. j  av a 2  s. c o  m

    boolean verify2 = CryptoECC.verifySignature("SHA384", publicKey2, bytes, signature);

    if (!verify2) {
        fail("failed signature verification");
    }

    // now reverse who signs what.
    BigInteger[] signatureB = CryptoECC.generateSignature("SHA384", privateKey2,
            new SecureRandom(entropySeed.getBytes()), bytes);

    boolean verifyB1 = CryptoECC.verifySignature("SHA384", publicKey, bytes, signatureB);

    if (!verifyB1) {
        fail("failed signature verification");
    }

    boolean verifyB2 = CryptoECC.verifySignature("SHA384", publicKey2, bytes, signatureB);

    if (!verifyB2) {
        fail("failed signature verification");
    }
}

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