ECC public 和私钥设置器

Question

我需要使用给定的 public 和私钥测试 ECC 验证。我找到了生成随机密钥的方法，但没有针对特定 public/private 密钥的设置器。如何将public/private键设置为字节数组？

 byte[] privateKeyBytes = new byte[]{(byte)0x24, (byte)0xF4, (byte)0x36, (byte)0x16, (byte)0xD0, (byte)0x96, (byte)0x12, (byte)0x63, (byte)0x90, (byte)0x2E, (byte)0x51, (byte)0xF6, (byte)0x87, (byte)0x55, (byte)0xAB, (byte)0xCB, (byte)0x5D, (byte)0xAC, (byte)0x56, (byte)0x1A, (byte)0xA5, (byte)0xFA, (byte)0x55, (byte)0xDB};
 byte[] publicKeyBytes = new byte[]{(byte)0x71, (byte)0x0B, (byte)0xCD, (byte)0xF8, (byte)0xEE, (byte)0x7F, (byte)0x36, (byte)0x32, (byte)0xF4, (byte)0x3E, (byte)0x8B, (byte)0x20, (byte)0x54, (byte)0xF7, (byte)0x84, (byte)0x26, (byte)0x4E, (byte)0x96, (byte)0xD9, (byte)0xBA, (byte)0x0F, (byte)0x82, (byte)0x84, (byte)0x2D, (byte)0xC1, (byte)0x31, (byte)0xE0, (byte)0xBF, (byte)0x9F, (byte)0x60, (byte)0x5F, (byte)0xAE, (byte)0x3A, (byte)0xA1, (byte)0x43, (byte)0x50, (byte)0x88, (byte)0x87, (byte)0xFE, (byte)0x49, (byte)0x6C, (byte)0x1F, (byte)0xF6, (byte)0x82, (byte)0x73, (byte)0xD8, (byte)0x77, (byte)0x8F};

 KeyPair pair = g.generateKeyPair();
 PublicKey pubKey = pair.getPublic();
 PrivateKey prikey = pair.getPrivate();

Answer 1

Public 不能设置私钥，因为它们应该生成。

按照这个，你将无法设置。

通常您可以对消息进行编码并将 public 密钥放入编码方法中。也许你有一个像 C# 中的 "ImportParameters"-Function，你可以在其中将 "Key" 导入所选的算法，如 RSA。

编辑：根据THIS的回答，可以这样导入。

我建议您生成密钥，使用序列化将它们存储为 JSON 之类的，这样您就可以在方法中再次导入、反序列化和导入它们

Answer 2

用于编码密钥：

private static PrivateKey generatePrivateKey(KeyFactory factory, byte[] content){
    PKCS8EncodedKeySpec privKeySpec = new PKCS8EncodedKeySpec(content);
    return factory.generatePrivate(privKeySpec);
}

private static PublicKey generatePublicKey(KeyFactory factory, byte[] content) {
    X509EncodedKeySpec pubKeySpec = new X509EncodedKeySpec(content);
    return factory.generatePublic(pubKeySpec);
}

对于未编码的：

Security.addProvider(new org.bouncycastle.jce.provider.BouncyCastleProvider());

ECNamedCurveParameterSpec spec = ECNamedCurveTable.getParameterSpec("secp192r1");

ECPrivateKeySpec ecPrivateKeySpec = new ECPrivateKeySpec(new BigInteger(1, privateKeyBytes), spec); 

ECNamedCurveSpec params = new ECNamedCurveSpec("secp192r1", spec.getCurve(), spec.getG(), spec.getN());
java.security.spec.ECPoint w = new java.security.spec.ECPoint(new BigInteger(1, Arrays.copyOfRange(publicKeyBytes, 0, 24)), new BigInteger(1, Arrays.copyOfRange(publicKeyBytes, 24, 48)));
PublicKey publicKey = factory.generatePublic(new java.security.spec.ECPublicKeySpec(w, params));

ECC public 和私钥设置器

ECC public and private keys setters

cryptography

private-key

public-key

elliptic-curve

java-security